CN114508007A - Abnormal abrasion inhibition device for rail transit wheel rail and installation method thereof - Google Patents
Abnormal abrasion inhibition device for rail transit wheel rail and installation method thereof Download PDFInfo
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- CN114508007A CN114508007A CN202011289176.5A CN202011289176A CN114508007A CN 114508007 A CN114508007 A CN 114508007A CN 202011289176 A CN202011289176 A CN 202011289176A CN 114508007 A CN114508007 A CN 114508007A
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- 230000002159 abnormal effect Effects 0.000 title claims abstract description 42
- 238000005299 abrasion Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 32
- 238000009434 installation Methods 0.000 title claims description 24
- 230000005764 inhibitory process Effects 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 204
- 239000010959 steel Substances 0.000 claims abstract description 204
- 238000013016 damping Methods 0.000 claims abstract description 137
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims description 56
- 238000010168 coupling process Methods 0.000 claims description 56
- 238000005859 coupling reaction Methods 0.000 claims description 56
- 230000000452 restraining effect Effects 0.000 claims description 40
- 230000001629 suppression Effects 0.000 claims description 27
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 claims description 5
- 230000036316 preload Effects 0.000 abstract description 21
- 230000002829 reductive effect Effects 0.000 abstract description 13
- 230000008859 change Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 12
- 230000009467 reduction Effects 0.000 description 8
- 230000001133 acceleration Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 239000002184 metal Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
- E01B19/003—Means for reducing the development or propagation of noise
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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
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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
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
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- Engineering & Computer Science (AREA)
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses a device for inhibiting abnormal abrasion of a rail transit wheel rail, which comprises a rail connecting part and a track bed connecting part, wherein a damping vibration attenuation part and an assembling bolt are connected between the rail connecting part and the track bed connecting part, the assembling bolt can adjust the distance between the rail connecting part and the track bed connecting part to enable the damping vibration attenuation part to be in a pressed state or a pulled state, the rail connecting part is used for being connected to the bottom of a rail, and the track bed connecting part is used for being connected to a track bed. The damping vibration attenuation component can apply initial acting force to the steel rail after the damping device is installed and the assembling bolt is removed, upward or downward preload is formed on the steel rail, vibration energy of the steel rail is absorbed, dynamic load between wheel rails is reduced, stability of the steel rail is improved, and abnormal abrasion of the wheel rails is inhibited; the device is low in price and does not need to change the existing track structure.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a device for inhibiting abnormal abrasion of a rail transit wheel rail and an installation method thereof.
Background
Serious abnormal abrasion between the wheel rails of the rail transit can reduce the riding comfort of passengers and even influence the driving safety. Operating maintenance departments expend a great deal of labor and resources in order to eliminate abnormal wear between the wheel rails.
Rail wave-type wear and wheel polygon wear are typical abnormal wheel rail wear, and both generally occur simultaneously. The occurrence of wave-shaped abrasion of the steel rail has the characteristics of multiple occurrence and difficult prediction, once the wave-shaped abrasion occurs, the wave-shaped abrasion can be eliminated only by grinding the steel rail, and the grinding must be tracked for a long time. Eliminating polygonal wear of the wheel requires pulling the train into a warehouse and turning the wheel. Rail grinding and wheel turning require the investment of large equipment and specialized personnel, and grinding and turning itself can shorten the service life of the rail and wheel itself.
Disclosure of Invention
The invention aims to: aiming at the problems that the abnormal abrasion such as the wave-shaped abrasion of a steel rail, the polygonal abrasion of a wheel and the like frequently occurs in the prior art, the abrasion cannot be reduced fundamentally by adopting the method of steel rail grinding and wheel turning, and the problems of high cost, time waste and labor waste are solved, and the device for inhibiting the abnormal abrasion of the wheel rail of the rail transit and the installation method thereof are provided.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a track traffic wheel rail abnormal wear suppression device, includes rail coupling part and railway roadbed coupling part, the rail coupling part with be connected with damping vibration attenuation part and assembly bolt between the railway roadbed coupling part, assembly bolt can adjust the rail coupling part with interval between the railway roadbed coupling part makes damping vibration attenuation part is in compression state or tensile state, the rail coupling part is used for connecting in the rail bottom, the railway roadbed coupling part is used for connecting in the railway roadbed.
And threaded holes corresponding to the assembling bolts are respectively formed in the steel rail connecting part and the ballast bed connecting part.
By adopting the abnormal abrasion suppression device for the wheel rail of the rail transit, the damping vibration reduction component generates elastic force through the matching of the steel rail connecting component, the track bed connecting component and the assembling bolt, when the suppression device is installed, and the assembling bolt is removed, the damping vibration reduction component can apply initial acting force to the steel rail to form upward or downward preload on the steel rail, so that the vibration energy of the steel rail is absorbed, the dynamic load between the wheel rails is reduced, and the stability of the steel rail is improved; the device can inhibit the abnormal abrasion of the wheel rails such as the wave shape of the steel rail, the polygon of the wheel and the like by improving the stability of the steel rail and reducing the dynamic load between the wheel rails, thereby reducing the times of grinding the steel rail and turning the wheel; the device has simple structure, convenient use and low price, and does not need to change the existing track structure.
Preferably, two or four of the assembling bolts are arranged on the steel rail coupling part, and the assembling bolts are symmetrically arranged along the longitudinal direction of the steel rail.
Preferably, a minimum of one set of said restraining means is provided at every fourth clip pitch along the longitudinal direction of the rail, or a maximum of one to three sets of said restraining means are provided between adjacent clips along the longitudinal direction of the rail.
Through the arrangement, the restraining devices can only play a role in damping and absorbing energy for the steel rails within the corresponding length range, the installation of three or more sets of restraining devices at the distance between adjacent fasteners has certain difficulty, and the functions of the restraining devices are not obviously different from the functions of the three sets of restraining devices.
Preferably, the track bed coupling member is provided with a through hole through which an expansion bolt is passed to fasten the track bed coupling member to the surface of the track bed.
Preferably, the rail coupling member and the vibration damping member are bonded or vulcanized together, and the vibration damping member and the ballast coupling member are bonded or vulcanized together.
Preferably, the steel rail connecting component is adhered to the bottom of the steel rail, or an elastic strip mounting seat is arranged on the upper surface of the steel rail connecting component, and an elastic strip is arranged on the elastic strip mounting seat and buckled with the steel rail.
Further preferably, when the rail coupling member is bonded to the bottom of the rail, projections are provided on both sides of the rail on the upper surface of the rail coupling member to restrict the rail coupling member from moving laterally with respect to the rail.
Preferably, the rail coupling member and the bed coupling member are both steel members.
Preferably, the damping vibration attenuation part is a rubber block or a polyurethane block.
The damping vibration attenuation component has a damping coefficient more than or equal to 8% measured by adopting a half-power method or an INV method.
Preferably, an error adjusting plate is arranged between the bottom surface of the track bed connecting part and the surface of the track bed, so that the gap between the bottom of the track bed connecting part and the surface of the track bed is d, and d is larger than 0.25 mm.
The error adjusting plates adopt different thickness specifications, and are selected to be of proper thickness or combined with a plurality of error adjusting plates of different thicknesses according to the distance error between the bottom of the steel rail and the surface of the track bed, and the error adjusting plates are padded between the track bed connecting part and the surface of the track bed; the error adjusting base plate is made into different specifications of 0.5mm, 1mm, 3mm, 5mm and the like according to the thickness.
The invention also provides an installation method of the abnormal abrasion suppression device for the rail transit wheel rail, which comprises the following steps:
A. changing the distance between the steel rail connecting component and the track bed connecting component by adjusting the assembling bolt so that the damping vibration attenuation component is set to be in a compression state or a tension state;
B. cleaning and leveling the surface of the ballast bed at the bottom of the steel rail at the installation position of the restraining device;
C. mounting the steel rail connecting component to ensure that the upper surface of the steel rail connecting component is tightly attached and fastened with the bottom of the steel rail;
D. measuring a gap between the track bed coupling member and a track bed surface;
E. assembling and installing the error adjusting plates with different specifications, and padding the error adjusting plates between the bottom surface of the track bed connecting part and the surface of the track bed to ensure that a gap between the bottom of the track bed connecting part and the surface of the track bed is d, wherein d is more than 0.25 mm;
F. assembling the track bed coupling member to a track bed surface;
G. releasing the limit of the assembly bolt on the steel rail coupling component and the track bed coupling component, so that the damping vibration attenuation component applies initial acting force on the steel rail;
H. and fastening and connecting the track bed connecting part to the surface of the track bed.
By adopting the mounting method of the abnormal abrasion suppression device for the wheel rail of the rail transit, the damping and vibration reduction component generates elastic force through the matching of the steel rail connecting component, the track bed connecting component and the assembling bolt, when the suppression device is mounted, and the assembling bolt is removed, the damping and vibration reduction component can apply initial acting force to the steel rail to form upward or downward preload on the steel rail, so that the vibration energy of the steel rail is absorbed, the dynamic load between the wheel rails is reduced, the stability of the steel rail is improved, and abnormal abrasion of the wheel rail such as wave shape of the steel rail and polygonal wheel rail is suppressed; the restraining device can be quickly and simply installed in the existing track structure, the installation method is simple in steps and convenient to operate, and the existing track structure does not need to be changed.
Preferably, the step of setting the damping vibration attenuation part in a compression state or a tension state is as follows: screwing the assembly bolt to enable the damping vibration attenuation part to be stressed and compressed or stretched, wherein the variation h of compression or stretching is F/k, F is the load acted on the damping vibration attenuation part by the assembly bolt, k is the rigidity of the damping vibration attenuation part, h is the variation of the distance between the steel rail connecting part and the track bed connecting part after the damping vibration attenuation part is adjusted by the assembly bolt from a loose state, | h | > 0.25mm, the damping vibration attenuation part, the track bed connecting part and the steel rail connecting part are in a reliable connection state, the track bed connecting part is provided with a threaded hole matched with the assembly bolt, the steel rail connecting part is provided with a through hole matched with the assembly bolt, and when the assembly bolt is screwed, the head part of the assembly bolt and the bolt thread respectively apply loads to the steel rail connecting part and the track bed connecting part, the damping vibration attenuation part is pressed, and after assembly is completed, an upward initial acting force can be generated on the steel rail; or the track bed connecting part is not provided with a hole matched with the assembling bolt, the steel rail connecting part is provided with a threaded hole matched with the assembling bolt, when the assembling bolt is screwed, the bolt thread and the end part of the assembling bolt apply load to the steel rail connecting part and the track bed connecting part respectively, so that the damping vibration attenuation part is pulled, and after the assembling is completed, downward initial acting force can be generated on the steel rail.
The invention also provides a device for inhibiting the abnormal abrasion of the rail transit wheel rail, which comprises a buckle, wherein the buckle comprises a groove, the groove is used for matching with the bottom wing of the steel rail, the upper side and the lower side of the groove are respectively provided with a pressing plate, a damping vibration attenuation part is arranged between the pressing plate and the bottom wing of the steel rail, the damping vibration attenuation part is attached to the pressing plate and the bottom wing of the steel rail, the buckle is provided with an assembly bolt, the assembly bolt is used for adjusting the distance between the pressing plate and the bottom wing of the steel rail, so that the damping vibration attenuation part is in a pressed state, the resultant force of the inhibiting device acting on the bottom wing of the steel rail is in a zero or positive and negative adjustable state, and the buckle is used for being connected with a track bed.
By adopting the abnormal abrasion suppression device for the wheel rail of the rail transit, the damping vibration attenuation part is pressed on the bottom wing of the steel rail to generate elasticity through the matching of the buckle, the pressing plate and the assembling bolt, the damping vibration attenuation part positioned at the bottom of the bottom wing of the steel rail can form upward preload on the steel rail, the damping vibration attenuation part positioned at the top of the bottom wing of the steel rail can form downward preload on the steel rail, the preload enables the damping vibration attenuation part to have a holding effect on the bottom wing of the steel rail, the damping effect of the damping vibration attenuation part can be fully exerted, the vibration energy of the steel rail is absorbed, the dynamic load between the wheel rails is reduced, and the stability of the steel rail is improved, simultaneously, the upward external force and the downward external force are completely or partially counteracted mutually, so that the original design characteristics of the track system are kept, and the magnitude of the resultant force acting on the bottom wing of the steel rail can be set as required; the device can inhibit the abnormal abrasion of the wheel rails such as the wave shape of the steel rail, the polygon of the wheel and the like by improving the stability of the steel rail and reducing the dynamic load between the wheel rails, thereby reducing the times of grinding the steel rail and turning the wheel; the device has simple structure, convenient use and low price, and does not need to change the existing track structure.
Preferably, two buckles are symmetrically arranged on two sides of the steel rail.
Preferably, a minimum of one set of said restraining means is provided at every fourth clip pitch along the longitudinal direction of the rail, or a maximum of one to three sets of said restraining means are provided between adjacent clips along the longitudinal direction of the rail.
Preferably, the upper bottom of the buckle is provided with a connecting seat, the connecting seat is provided with a through hole, and the buckle is fastened on the surface of the ballast bed by passing an expansion bolt through the through hole.
Further preferably, an error adjusting plate is arranged between the bottom surface of the connecting seat and the surface of the track bed.
The error adjusting plates adopt different thickness specifications, and an error adjusting plate with proper thickness or a combination of several error adjusting plates with different thicknesses is selected according to the distance error between the bottom of the steel rail and the surface of the track bed, so that the error adjusting plate is padded between the connecting seat and the surface of the track bed; the error adjusting base plate is made into different specifications of 0.5mm, 1mm, 3mm, 5mm and the like according to the thickness.
Preferably, the damping and shock-absorbing part is adhered to the bottom wing of the steel rail.
Preferably, the damping vibration attenuation member is adhered to the pressure plate.
Preferably, the pressing plate is a steel plate.
Preferably, the damping vibration attenuation part wraps three sides of the steel rail bottom wing.
Preferably, the clasp is a steel member.
Preferably, the damping vibration attenuation part is a rubber block or a polyurethane block.
The damping vibration attenuation component adopts a half-power method or an INV method to measure the damping coefficient of the damping vibration attenuation component to be more than or equal to 8 percent.
The invention also provides an installation method of the abnormal abrasion suppression device for the rail transit wheel rail, which comprises the following steps:
a. cleaning and leveling the surface of the ballast bed at the bottom of the steel rail at the installation position of the restraining device;
b. assembling the buckle, the assembling bolt, the pressure plate and the damping vibration attenuation part;
c. measuring a gap between the bottom of the clip and a surface of a ballast bed;
d. error adjusting plates with different specifications are assembled and installed, and are padded between the bottom surfaces of the buckles and the surface of the ballast bed to eliminate gaps;
e. tightly connecting the bottom of the buckle to the surface of the ballast bed;
f. screwing the assembling bolt, adjusting the distance between the pressing plate and the steel rail bottom wing to enable the damping vibration attenuation part to be in a pressed state and form resultant force acting on the steel rail bottom wing, wherein a gap is formed between the pressing plate and the buckle;
g. and filling a cushion block in the gap, loosening the assembling bolt, keeping the damping vibration attenuation component in a pressed state by the cushion block, and keeping the resultant force of the damping vibration attenuation component to the bottom wing of the steel rail.
By adopting the mounting method of the abnormal abrasion restraining device for the rail transit wheel rail, the damping vibration attenuation part is pressed on the bottom wing of the steel rail to generate elasticity through the matching of the buckle, the pressing plate and the assembling bolt, the damping vibration attenuation part positioned at the bottom of the bottom wing of the steel rail can form upward preload on the steel rail, the damping vibration attenuation part positioned at the top of the bottom wing of the steel rail can form downward preload on the steel rail, the preload enables the damping vibration attenuation part to have a holding effect on the bottom wing of the steel rail, the damping effect of the damping vibration attenuation part can be fully exerted, the vibration energy of the steel rail is absorbed, the dynamic load between wheel rails is reduced, and the stability of the steel rail is improved, simultaneously, the upward external force and the downward external force are completely or partially offset, so that the original design characteristics of the track system are kept, and the magnitude of the resultant force acting on the bottom wing of the steel rail can be set as required; the restraining device can be quickly and simply installed in the existing track structure, the installation method is simple in steps and convenient to operate, and the existing track structure does not need to be changed.
Preferably, the cushion block is a metal cushion block.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the abnormal abrasion suppression device for the wheel rail of the rail transit, the damping vibration reduction component generates elastic force through the matching of the steel rail connecting component, the track bed connecting component and the assembling bolt, when the suppression device is installed, and after the assembling bolt is removed, the damping vibration reduction component can apply initial acting force to the steel rail to form upward or downward preload on the steel rail, so that the vibration energy of the steel rail is absorbed, the dynamic load between the wheel rails is reduced, and the stability of the steel rail is improved; the device can inhibit the abnormal abrasion of the wheel rails such as the wave shape of the steel rail, the polygon shape of the wheel and the like by improving the stability of the steel rail, reducing the dynamic load between the wheel rails and reducing the times of grinding and turning the wheel; the device has simple structure, convenient use and low cost, and the existing track structure does not need to be changed;
2. according to the mounting method of the abnormal abrasion suppression device for the rail transit wheel rail, the damping vibration reduction component generates elasticity through the matching of the steel rail connecting component, the track bed connecting component and the assembling bolt, when the suppression device is mounted, after the assembling bolt is removed, the damping vibration reduction component can apply initial acting force to the steel rail to form upward or downward preload on the steel rail, so that the vibration energy of the steel rail is absorbed, the dynamic load between the wheel rails is reduced, the stability of the steel rail is improved, and abnormal abrasion of the wheel rail such as wave shape of the steel rail and wheel polygon is suppressed; the restraining device can be quickly and simply installed in the existing track structure, the installation method is simple in step and convenient to operate, and the existing track structure does not need to be changed;
3. the abnormal abrasion suppression device for the wheel rail of the rail transit, provided by the invention, has the advantages that the damping vibration attenuation part is pressed on the bottom wing of the steel rail to generate elasticity through the matching of the buckle, the pressing plate and the assembling bolt, the damping vibration attenuation part positioned at the bottom of the bottom wing of the steel rail can form upward preload on the steel rail, the damping vibration attenuation part positioned at the top of the bottom wing of the steel rail can form downward preload on the steel rail, the preload enables the damping vibration attenuation part to have a clamping effect on the bottom wing of the steel rail, the damping effect of the damping vibration attenuation part can be fully exerted, the vibration energy of the steel rail is absorbed, the dynamic load between the wheel rails is reduced, and the stability of the steel rail is improved, simultaneously, the upward external force and the downward external force are completely or partially offset, so that the original design characteristics of the track system are kept, and the magnitude of the resultant force acting on the bottom wing of the steel rail can be set as required; the device can inhibit the abnormal abrasion of the wheel rails such as the wave shape of the steel rail, the polygon of the wheel and the like by improving the stability of the steel rail and reducing the dynamic load between the wheel rails, thereby reducing the times of grinding the steel rail and turning the wheel; the device has simple structure, convenient use and low cost, and the existing track structure does not need to be changed;
4. the invention relates to a method for installing a device for inhibiting abnormal abrasion of a rail transit wheel rail, the damping vibration attenuation part is pressed on the bottom wing of the steel rail to generate elasticity through the matching of the buckle, the pressing plate and the assembling bolt, the damping vibration attenuation part positioned at the bottom of the bottom wing of the steel rail can form upward preload on the steel rail, the damping vibration attenuation part positioned at the top of the bottom wing of the steel rail can form downward preload on the steel rail, the preload enables the damping vibration attenuation part to have a holding effect on the bottom wing of the steel rail, the damping effect of the damping vibration attenuation part can be fully exerted, the vibration energy of the steel rail is absorbed, the dynamic load between wheel rails is reduced, and the stability of the steel rail is improved, simultaneously, the upward external force and the downward external force are completely or partially offset, so that the original design characteristics of the track system are kept, and the magnitude of the resultant force acting on the bottom wing of the steel rail can be set as required; the restraining device can be quickly and simply installed in the existing track structure, the installation method is simple in steps and convenient to operate, and the existing track structure does not need to be changed.
Drawings
FIG. 1 is a schematic view of a configuration of the restraining apparatus of the present invention;
FIG. 2 is a schematic view of the connection of the suppression device of FIG. 1 to a rail;
FIG. 3 is a schematic view of a configuration of the restraining apparatus of the present invention;
FIG. 4 is a schematic view of the connection of the suppression device of FIG. 3 to a rail;
FIG. 5 is a schematic view of a configuration of the restraining apparatus of the present invention;
FIG. 6 is a schematic view of the connection of the suppression device of FIG. 5 to a rail;
FIG. 7 is a schematic view of a configuration of the restraining apparatus of the present invention;
FIG. 8 is a schematic view of the connection of the suppression device of FIG. 7 to a rail;
FIG. 9 is a schematic view of a configuration of the restraining means of the present invention;
FIG. 10 is a front view of FIG. 9;
FIG. 11 is an enlarged partial view of FIG. 10;
FIG. 12 is a schematic structural view of a conventional steel rail;
FIG. 13 is a schematic structural view of a prior art damper rail;
FIG. 14 is a schematic view of the construction of a rail having a restraint device according to the present invention;
FIG. 15 is a schematic time domain response of rail vibration acceleration;
FIG. 16 is a frequency domain response diagram of rail vibration acceleration.
Icon: 1-steel rail connecting part, 2-track bed connecting part, 3-damping vibration attenuation part, 4-assembly bolt, 5-steel rail, 6-buckle, 61-connecting seat and 7-pressing plate.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example 1
As shown in fig. 1-2, the abnormal wear inhibition device for the rail transit wheel rail and the installation method thereof according to the present invention comprise a rail coupling member 1 and a track bed coupling member 2, wherein the rail coupling member 1 and the track bed coupling member 2 are both steel blocks.
The damping vibration attenuation device is characterized in that a damping vibration attenuation part 3 is arranged between the steel rail connecting part 1 and the track bed connecting part 2, the steel rail connecting part 1 and the track bed connecting part 2 are connected through an assembling bolt 4, and threaded holes corresponding to the assembling bolt 4 are respectively formed in the steel rail connecting part 1 and the track bed connecting part 2.
The damping vibration attenuation components 3 are rubber blocks or polyurethane blocks, the damping coefficient of the damping vibration attenuation components 3 is more than or equal to 8% measured by adopting a half-power method or an INV method, as shown in figure 2, the damping vibration attenuation components 3 are longitudinally arranged along the steel rail 5 in the length direction, the damping vibration attenuation components 3 are uniformly arranged by taking the steel rail 5 as the axial direction, and four assembling bolts 4 are symmetrically arranged on two sides of the steel rail 5.
The assembly bolts 4 can adjust the distance between the rail joint member 1 and the track bed joint member 2, so that the damping and vibration-damping member 3 is in a compressed state or a tensioned state, the rail joint member 1 is used for being connected to the bottom of a rail 5, and the track bed joint member 2 is used for being connected to a track bed.
Wherein, at least one set of the restraining devices is arranged every other four fastener intervals along the longitudinal direction of the steel rail 5, or at most one to three sets of the restraining devices are arranged between adjacent fasteners along the longitudinal direction of the steel rail 5; specifically, in this embodiment, as shown in fig. 14, a set of the restraining devices is disposed between adjacent fasteners.
Specifically, the track bed connecting part 2 is provided with a through hole, and the track bed connecting part 2 is fastened on the surface of the track bed through an expansion bolt penetrating through the through hole; the steel rail coupling part 1 and the damping vibration attenuation part 3 are bonded or vulcanized, and the damping vibration attenuation part 3 and the track bed coupling part 2 are bonded or vulcanized; the steel rail connecting part 1 is adhered to the bottom of a steel rail 5, or an elastic strip mounting seat is arranged on the upper surface of the steel rail connecting part 1, and an elastic strip is arranged on the elastic strip mounting seat and buckled with the steel rail 5; when the rail coupling member 1 is adhered to the bottom of the rail 5, protrusions are provided on both sides of the rail 5 on the upper surface of the rail coupling member 1 to restrict the rail coupling member 1 from moving laterally with respect to the rail 5.
As a preferable scheme of the embodiment, an error adjusting plate is arranged between the bottom surface of the track bed connecting part 2 and the surface of the track bed, so that a gap between the bottom of the track bed connecting part 2 and the surface of the track bed is d, d is larger than 0.25mm, the error adjusting plate adopts different thickness specifications, and according to a distance error between the bottom of the steel rail 5 and the surface of the track bed, the error adjusting plate with a proper thickness or a combination of several error adjusting plates with different thicknesses is selected to be padded between the track bed connecting part 2 and the surface of the track bed; the error adjusting base plate is made into different specifications of 0.5mm, 1mm, 3mm, 5mm and the like according to the thickness.
The installation method of the restraining device comprises the following steps:
A. changing the distance between the rail joint part 1 and the track bed joint part 2 by adjusting the assembling bolt 4, so that the damping vibration attenuation part 3 is set to be in a compression state or a tension state;
B. cleaning and leveling the surface of the ballast bed at the bottom of the steel rail 5 at the installation position of the inhibiting device;
C. mounting the steel rail connecting part 1 to ensure that the upper surface of the steel rail connecting part is tightly attached and fastened with the bottom of the steel rail 5;
D. measuring the gap between the track bed coupling part 2 and the track bed surface;
E. assembling and installing the error adjusting plates with different specifications, and padding the error adjusting plates between the bottom surface of the track bed connecting part 2 and the surface of the track bed to ensure that the gap between the bottom of the track bed connecting part 2 and the surface of the track bed is d, wherein d is more than 0.25 mm;
F. assembling the track bed coupling part 2 on the surface of the track bed;
G. releasing the limit of the assembly bolt 4 on the rail coupling member 1 and the track bed coupling member 2, so that the damping vibration attenuation member 3 applies initial acting force to the rail;
H. the bed coupling part 2 is fastened to the bed surface.
Wherein, step A includes: screwing the assembling bolt 4 to enable the damping vibration attenuation part 3 to be compressed or stretched under stress, wherein the variation h of compression or stretching is F/k, F is the load acted on the damping vibration attenuation part 3 by the assembling bolt 4, k is the rigidity of the damping vibration attenuation part 3, h is the variation of the distance between the steel rail connecting part 1 and the track bed connecting part 2 after the damping vibration attenuation part 3 is adjusted by the assembling bolt 4 from a loose state to a state that the damping vibration attenuation part 3 is reliably connected with the track bed connecting part 1 and the steel rail connecting part 2, the track bed connecting part 2 is provided with a threaded hole matched with the assembling bolt 4, the steel rail connecting part 1 is provided with a through hole matched with the assembling bolt 4, and when the assembling bolt 4 is screwed, the head of the assembling bolt 4 and the bolt thread respectively apply force to the steel rail connecting part 1 and the track bed connecting part 2 Loading to enable the damping vibration attenuation part 3 to be pressed, and generating upward initial acting force on the steel rail 5 after assembly; or the track bed connecting part 2 is not provided with a hole matched with the assembling bolt 4, the steel rail connecting part 1 is provided with a threaded hole matched with the assembling bolt 4, when the assembling bolt 4 is screwed, the bolt thread and the end part of the screw rod of the assembling bolt 4 apply load to the steel rail connecting part 1 and the track bed connecting part 2 respectively, so that the damping vibration attenuation part 3 is pulled, and after the assembling is completed, downward initial acting force can be generated on the steel rail 5.
By applying the abnormal abrasion suppression device for the wheel rail of the rail transit, the damping vibration attenuation part 3 generates elastic force through the matching of the steel rail connecting part 1, the track bed connecting part 2 and the assembling bolt 4, when the suppression device is installed, and after the assembling bolt 4 is removed, the damping vibration attenuation part 3 can apply initial acting force to the steel rail 5 to form upward or downward preload on the steel rail 5, so that the vibration energy of the steel rail 5 is absorbed, the dynamic load between the wheel rails is reduced, and the stability of the steel rail 5 is improved; the device can inhibit the abnormal abrasion of the wavy wheel rails, wheel polygons and the like of the steel rail 5 by improving the stability of the steel rail 5, reducing the dynamic load between the wheel rails and reducing the grinding and turning times of the steel rail; the device has simple structure, convenient use and low price, and the existing track structure does not need to be changed; the corresponding installation method can quickly and simply install the restraining device into the existing track structure, and the installation method is simple in steps and convenient to operate and does not need to change the existing track structure.
Example 2
As shown in fig. 3-4, the abnormal wear suppressing device for a rail track and wheel of rail transit according to the present invention is different from embodiment 1 in that the device includes a plurality of damping members 3, all the damping members 3 are longitudinally disposed along a rail 5 in a length direction, and all the damping members 3 are axially symmetrically disposed with respect to the rail 5.
Example 3
As shown in fig. 5 to 6, the abnormal wear suppressing device for a rail road wheel according to the present invention is different from embodiment 1 in that, in this embodiment, the longitudinal direction of the damping member 3 is perpendicular to the longitudinal direction of the rail 5, and the damping member 3 is axially symmetric with respect to the rail 5.
Example 4
As shown in fig. 7 to 8, the abnormal wear suppressing device for a rail road wheel according to the present invention is different from embodiment 1 in that, in this embodiment, the damping member 3 is cross-shaped, four corners of the cross-shape are used for installing the mounting bolts 4, and the damping member 3 is axially symmetrically arranged with respect to the rail 5.
Example 5
As shown in fig. 9 to 11, the abnormal wear inhibiting device for the rail transit wheel rail comprises a buckle 6, wherein the buckle 6 is a steel member, the buckle 6 comprises a groove, the groove is used for matching with a bottom wing of a steel rail 5, and two buckles 6 are symmetrically arranged on two sides of the steel rail 5.
The upper inner side and the lower inner side of the groove are respectively provided with a pressing plate 7, and the pressing plates 7 are steel plates; a damping vibration attenuation part 3 is arranged between the pressing plate 7 and the bottom wing of the steel rail 5, the damping vibration attenuation part 3 is attached to the pressing plate 7 and the bottom wing of the steel rail 5, and specifically, the damping vibration attenuation part 3 is bonded to the pressing plate 7 and the bottom wing of the steel rail 5; as shown in fig. 11, the damping member 3 is wrapped around three sides of the rail 5.
The buckle 6 is provided with an assembly bolt 4, the assembly bolt 4 is used for adjusting the distance between the pressure plate 7 and the bottom wing of the steel rail 5, so that the resultant force of the suppression device acting on the bottom wing of the steel rail 5 is in a zero or positive and negative adjustable state when the damping vibration attenuation part 3 is in a pressed state, and the buckle 6 is used for being connected to a track bed; the damping vibration attenuation component 3 is a rubber block or a polyurethane block, and the damping coefficient of the damping vibration attenuation component 3 is more than or equal to 8% measured by adopting a half-power method or an INV method.
Wherein, at least one set of the restraining devices is arranged at intervals of every four fasteners along the longitudinal direction of the steel rail 5, or at most one to three sets of the restraining devices are arranged between adjacent fasteners along the longitudinal direction of the steel rail 5; specifically, in this embodiment, as shown in fig. 14, a set of the restraining devices is disposed between adjacent fasteners.
As a preferable scheme of this embodiment, a coupling seat 61 is provided at the upper bottom of the buckle 6, a through hole is provided on the coupling seat 61, and the buckle 6 is fastened on the surface of the ballast bed by passing an expansion bolt through the through hole; an error adjusting plate is arranged between the bottom surface of the connecting seat 61 and the surface of the track bed, the error adjusting plate adopts different thickness specifications, and an error adjusting plate with proper thickness or a combination of several error adjusting plates with different thicknesses is selected according to the distance error between the bottom of the steel rail 5 and the surface of the track bed, and the error adjusting plate is padded between the connecting seat 61 and the surface of the track bed; the error adjusting base plate is made into different specifications of 0.5mm, 1mm, 3mm, 5mm and the like according to the thickness.
The installation method of the restraining device comprises the following steps:
a. cleaning and leveling the surface of the ballast bed at the bottom of the steel rail 5 at the installation position of the inhibiting device;
b. assembling the buckle 6, the assembling bolt 4, the pressure plate 7 and the damping vibration attenuation part 3;
c. measuring the gap between the bottom of the buckle 6 and the surface of the ballast bed;
d. error adjusting plates with different specifications are assembled and installed, and are padded between the bottom surface of the buckle 6 and the surface of the ballast bed to eliminate gaps;
e. the bottom of the buckle 6 is tightly connected with the surface of the ballast bed;
f. the assembling bolts 4 are screwed down, the distance between the pressing plate 7 and the bottom wing of the steel rail 5 is adjusted, the damping vibration attenuation part 3 is in a pressed state, resultant force acting on the bottom wing of the steel rail 5 is formed, and a gap is formed between the pressing plate 7 and the buckle 6;
g. and filling a metal cushion block in the gap, loosening the assembling bolt 4, keeping the damping vibration attenuation component 3 in a pressed state by the cushion block, and keeping the resultant force of the damping vibration attenuation component 3 to the bottom wing of the steel rail 5.
By applying the abnormal abrasion suppression device for the wheel rail of the rail transit, which is disclosed by the invention, the damping vibration attenuation part 3 is pressed on the bottom wing of the steel rail 5 to generate elastic force through the matching of the buckle 6, the pressing plate 7 and the assembling bolt 4, the damping vibration attenuation part 3 positioned at the bottom of the bottom wing of the steel rail 5 can form upward preload on the steel rail 5, the damping vibration attenuation part 3 positioned at the top of the bottom wing of the steel rail 5 can form downward preload on the steel rail 5, the preload enables the damping vibration attenuation part 3 to have a clamping effect on the bottom wing of the steel rail 5, the damping effect of the damping vibration attenuation part 3 can be fully exerted, the vibration energy of the steel rail 5 is absorbed, the dynamic load between the wheel rails is reduced, the stability of the steel rail 5 is improved, and meanwhile, the upward external force and the downward external force are completely or partially offset mutually, so that the original design characteristics of a rail system are kept, the magnitude of the resultant force acting on the bottom wing of the steel rail 5 can be set according to requirements; the device can inhibit the abnormal abrasion of the wavy wheel rails, wheel polygons and the like of the steel rail 5 by improving the stability of the steel rail 5, reducing the dynamic load between the wheel rails and reducing the grinding and turning times of the steel rail; the device has simple structure, convenient use and low cost, and the existing track structure does not need to be changed; the corresponding installation method can quickly and simply install the restraining device into the existing track structure, and the installation method is simple in steps and convenient to operate and does not need to change the existing track structure.
Comparative analysis
As shown in fig. 1 to 16, in order to find out the effect of the abnormal wear suppression device for the wheel rail of the rail transit, a rail drop axle test simulation model is established to perform comparative study on the vibration acceleration response of the steel rail 5.
As shown in fig. 12, the existing reinforced concrete monolithic roadbed has a common 60kg/m rail 5 model.
As shown in fig. 13, an existing damped rail 5 model in which a damping layer is attached to the rail web of the rail 5 is used on the basis of the above-mentioned common 60kg/m rail 5 model.
As shown in fig. 14, a set of rail 5 models of the restraining devices according to any one of embodiments 1 to 5 is provided between adjacent clips on the basis of the above-mentioned common 60kg/m rail 5 model.
Wherein the height of the falling shaft is 20mm, and the acting force on the steel rail 5 is 18.3 t; a set of steel rail 5 vibration suppression device with the rigidity of 2.5kN/mm is arranged corresponding to each fastener gap, and an upward initial pre-tightening force of 1.0kN is set; the damping steel rail 5 is secretly pasted with a damping layer (the density is 1000 kg/m) with the thickness of 5mm at the rail waist3Elastic modulus 15MPa, Poisson's ratio 0.4) and a damping layer (density 7800 kg/m) of 2mm thickness3Elastic modulus 206GPa, poisson's ratio 0.3).
The dynamic load is applied to the three steel rail 5 models shown in fig. 12-14, and the time domain response of the acceleration of the steel rail 5 can be seen from fig. 15, which shows that the restraining device provided by the invention can quickly attenuate the acceleration of the steel rail 5; as can be seen from the frequency domain response of the acceleration of the rail 5 in fig. 16, the vibration acceleration corresponding to the principal frequency of vibration of the rail 5 is significantly reduced due to the effect of the suppression means.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a track traffic wheel rail abnormal wear suppression device, its characterized in that, includes rail coupling part (1) and track bed coupling part (2), rail coupling part (1) with be connected with damping vibration damping component (3) and assembly bolt (4) between track bed coupling part (2), assembly bolt (4) can be adjusted rail coupling part (1) with interval between track bed coupling part (2), make damping vibration damping component (3) are in compression state or tensile state, rail coupling part (1) are used for connecting in rail (5) bottom, track bed coupling part (2) are used for connecting in the track bed.
2. The restraining device of claim 1, wherein a minimum of one set of the restraining device is positioned every fourth clip pitch longitudinally along the rail (5), or a maximum of one to three sets of the restraining device are positioned between adjacent clips longitudinally along the rail (5).
3. The suppression device according to claim 1, wherein the bed coupling member (2) is provided with a through hole through which an expansion bolt is passed to fasten the bed coupling member (2) to a bed surface.
4. The suppression device according to claim 1, wherein the rail coupling member (1) and the dampening member (3) are bonded or vulcanized together, and wherein the dampening member (3) and the track bed coupling member (2) are bonded or vulcanized together.
5. The restraining device according to claim 1, characterized in that the rail coupling member (1) is adhered to the bottom of the rail (5), or a spring bar mounting seat is arranged on the upper surface of the rail coupling member (1), and the spring bar mounting seat is provided with a spring bar which is buckled with the connecting rail (5).
6. The damping device according to claim 1, characterized in that the dampening vibration absorbing member (3) is a rubber block or a polyurethane block.
7. A restraining device according to any one of claims 1-6, characterized in that an error adjusting plate is arranged between the bottom surface of the bed coupler (2) and the bed surface, such that the gap between the bottom of the bed coupler (2) and the bed surface is d, d > 0.25 mm.
8. A method for installing the abnormal wear suppressing device for the wheel rail of the rail transit according to claim 7, comprising the steps of:
A. changing the distance between the steel rail coupling part (1) and the track bed coupling part (2) by adjusting the assembling bolt (4) to enable the damping and vibration-damping part (3) to be in a compressed state or a pulled state;
B. cleaning and leveling the surface of the ballast bed at the bottom of the steel rail (5) at the installation position of the restraining device;
C. mounting the steel rail connecting part (1) to ensure that the upper surface of the steel rail connecting part is tightly attached and fastened with the bottom of the steel rail (5);
D. measuring the gap between the track bed coupling part (2) and the track bed surface;
E. assembling and installing the error adjusting plates with different specifications, and padding the error adjusting plates between the bottom surface of the track bed connecting part (2) and the surface of the track bed to ensure that the gap between the bottom of the track bed connecting part (2) and the surface of the track bed is d, wherein d is more than 0.25 mm;
F. assembling the track bed coupling part (2) on the surface of the track bed;
G. releasing the limit of the assembly bolt (4) on the rail connecting component (1) and the track bed connecting component (2) so that the damping component (3) exerts initial acting force on the rail;
H. and fixedly connecting the track bed connecting part (2) to the surface of the track bed.
9. A device for inhibiting abnormal abrasion of a rail transit wheel rail is characterized by comprising a buckle (6), the buckle (6) comprises a groove which is used for matching with the bottom wing of the steel rail (5), the upper inner side and the lower inner side of the groove are respectively provided with a pressing plate (7), a damping vibration attenuation part (3) is arranged between the pressing plate (7) and the bottom wing of the steel rail (5), the damping vibration attenuation part (3) is attached to the pressing plate (7) and the bottom wing of the steel rail (5), the buckle (6) is provided with an assembling bolt (4), the assembling bolt (4) is used for adjusting the distance between the pressure plate (7) and the bottom wing of the steel rail (5) so that the damping vibration attenuation part (3) is in a pressed state, the resultant force of the restraining device acting on the bottom wing of the steel rail (5) is in a zero or positive and negative adjustable state, and the buckle (6) is used for being connected to a track bed.
10. A method for installing the abnormal wear suppressing device for the rail transit wheel rail according to claim 9, comprising the steps of:
a. cleaning and leveling the surface of the ballast bed at the bottom of the steel rail (5) at the installation position of the restraining device;
b. assembling the buckle (6), the assembling bolt (4), the pressure plate (7) and the damping vibration attenuation part (3);
c. measuring the gap between the bottom of the buckle (6) and the surface of the track bed;
d. error adjusting plates with different specifications are assembled and installed, and are padded between the bottom surface of the buckle (6) and the surface of the ballast bed to eliminate gaps;
e. the bottom of the buckle (6) is fixedly connected to the surface of the ballast bed;
f. the assembling bolts (4) are screwed down, the distance between the pressing plate (7) and the bottom wing of the steel rail (5) is adjusted, the damping vibration attenuation part (3) is in a pressed state, resultant force acting on the bottom wing of the steel rail (5) is formed, and a gap is formed between the pressing plate (7) and the buckle (6);
g. and filling a cushion block in the gap, loosening the assembling bolt (4), keeping the damping and vibration-damping component (3) in a pressed state, and keeping the resultant force of the damping and vibration-damping component (3) to the bottom wing of the steel rail (5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011289176.5A CN114508007A (en) | 2020-11-16 | 2020-11-16 | Abnormal abrasion inhibition device for rail transit wheel rail and installation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011289176.5A CN114508007A (en) | 2020-11-16 | 2020-11-16 | Abnormal abrasion inhibition device for rail transit wheel rail and installation method thereof |
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