CN113818291A - Steel rail vibration damper for ballastless track - Google Patents
Steel rail vibration damper for ballastless track Download PDFInfo
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- CN113818291A CN113818291A CN202111236129.9A CN202111236129A CN113818291A CN 113818291 A CN113818291 A CN 113818291A CN 202111236129 A CN202111236129 A CN 202111236129A CN 113818291 A CN113818291 A CN 113818291A
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- steel rail
- damping layer
- resonance
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 51
- 239000010959 steel Substances 0.000 title claims abstract description 51
- 238000013016 damping Methods 0.000 claims abstract description 91
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000010008 shearing Methods 0.000 abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 12
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000001629 suppression Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000452 restraining effect Effects 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention belongs to a vibration damper, and particularly relates to a ballastless track steel rail vibration damper, which comprises a bottom plate and a vibration transmission plate matched with the rail bottom of a steel rail, wherein a damping layer is arranged between the vibration transmission plate and the bottom plate, one surface of the vibration transmission plate, which is opposite to the bottom plate and is matched with the damping layer, is provided with a resonance sheet, and the resonance sheet is arranged in the damping layer in a penetrating way; the invention can form restraint on the lower end of the damping layer to restrain the amplitude of the steel rail and dissipate the vibration energy of the steel rail and the vibration energy of the steel plate of the noise reduction damper, and increases the shearing area and the shearing deformation of the damping layer, so that the vibration energy of the steel rail can be converted into heat energy to the maximum extent, and the vibration reduction and noise reduction effects are improved. The damping layer is restrained to perform primary vibration suppression and vibration absorption, the transmitted amplitude induces the cantilever vibration of the resonance piece, and then the resonance piece and the damping layer perform secondary vibration suppression and vibration absorption, so that the vibration suppression and vibration absorption effects are better.
Description
Technical Field
The invention belongs to a vibration damper, and particularly relates to a vibration damper for a steel rail of a ballastless track.
Background
When a subway vehicle passes through a small curve radius, the rail cannot run tangentially to the rail due to the constraint of the bogie, namely, an axle cannot be positioned in the radial position of the curve, so that the rail transversely slides over a rail head when rolling along the rail, adhesion and idle running of a contact surface of a wheel rail are generated, violent wheel rail resonance is generated, and narrow-band squeal is generated. In addition, due to the mutual contact of the wheel rail, after the wheel rail system is used for a period of time, the steel rail often has a corresponding corrugation problem, the steel rail also has a corresponding wear problem such as multiple deformation, and at the moment, the wheel rail system directly generates serious rolling noise due to the corrugation of the steel rail and the unevenness of the tread of the steel rail, so that the comfort of passengers is influenced, and the problem of vibration noise of buildings along the line is easily caused.
The structure of the Chinese patent application No. 201511025716.8 is a continuous elastic support steel rail, damping filling is adopted for damping and damping, the contact shearing area between the damping layer and the energy dissipation structure formed by the steel rail connecting plate in the device is small, the shearing deformation of the damping layer is small, and the energy dissipation and vibration reduction effects are poor.
Disclosure of Invention
The invention aims to provide a ballastless track steel rail vibration damping device with good vibration and noise reduction effects.
The vibration damping device comprises a bottom plate and a vibration transmitting plate matched with the rail bottom of a steel rail, wherein a damping layer is arranged between the vibration transmitting plate and the bottom plate, a resonance piece is arranged on one surface of the vibration transmitting plate, which is opposite to the bottom plate and matched with the damping layer, and the resonance piece penetrates through the damping layer.
Furthermore, the number of the resonance plates is more than two, and every two resonance plates are arranged at intervals.
Further, at least two of the resonator plates have different dimensions in a height direction of the rail, and/or at least two of the resonator plates have different dimensions in a length direction of the rail.
Furthermore, the resonance piece is provided with more than three, and the distance between its one end towards the bottom plate of resonance piece and the board of progressively shaking decreases to the resonance piece that is located middle part resonance piece both sides along the resonance piece that is located the middle part more than three.
Further, the bottom plate is V-shaped.
Furthermore, the resonance plate is arranged along the direction of the vibration transfer plate along the length direction of the steel rail.
Furthermore, the damping plate is further provided with two baffles, the two baffles are arranged towards the bottom plate, the resonance sheet is located between the two baffles, one surfaces of the two baffles, which are opposite to each other, are respectively attached to two sides of the damping layer, and an interval is arranged between one end of each baffle, which deviates from the damping plate, and the bottom plate.
Furthermore, a bulge is arranged on one surface of the bottom plate matched with the damping layer and penetrates through the damping layer.
Still further, still include supporting mechanism, supporting mechanism includes bearing subassembly and adjusting part, the bearing subassembly includes the supporting seat that is used for the bearing bottom plate, adjusting part can drive the supporting seat and move towards the direction of keeping away from or being close to the rail end of rail.
Furthermore, the bearing subassembly still includes the base and links the arm structure, link the arm structure and include two and link the arm, link two and link through the pivot articulated between the arm, and two both ends of linking the arm are articulated with base and supporting seat respectively, it is provided with two sets ofly to link the arm structure, adjusting part includes the screw rod, and the axis of screw rod is perpendicular with two sets of pivot axes of linking in the arm structure, and the screw rod links the direct or indirect screw-thread fit of pivot of arm structure with one set of wherein, and the direct or indirect normal running fit of pivot of arm structure with another group.
The damping layer has the beneficial effects that the lower end of the damping layer is restrained, so that the upper end of the damping layer can vibrate, the lower end of the damping layer forms similar fixed restraint to restrain the amplitude of the steel rail and dissipate the vibration energy of the steel rail and the vibration energy of the noise reduction damper steel plate, the resonance piece is arranged on the surface of the vibration transfer plate matched with the damping layer, the resonance piece is arranged in the damping layer in a penetrating mode, the shearing area and the shearing deformation of the damping layer can be increased, the vibration energy of the steel rail can be converted into the heat energy to the maximum degree, and the vibration reduction and noise reduction effects are improved. The vibration amplitude that the rail produced directly transmits resonance piece and damping layer department through the board of shaking of pass, carries out one again through restraint damping layer itself and presses down and inhale the vibration, and the vibration amplitude of transmission simultaneously triggers resonance piece cantilever vibration, and the rethread resonance piece and damping layer carry out two times and press down and inhale the vibration for press down and inhale the vibration effect better. The resonance sheet can reduce the whole deformation degree of the damping layer while increasing the shearing area and the shearing deformation of the damping layer, thereby avoiding the damping layer from generating reaction force on the steel rail due to overlarge deformation and avoiding the mutual influence between the steel rail and the damping layer.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of a combined structure of a vibration plate and a resonator plate according to the present invention.
FIG. 3 is a schematic structural diagram of a damping layer according to the present invention.
Fig. 4 is a schematic structural diagram of the bottom plate of the present invention.
Figure 5 is a schematic view of the construction of the support assembly of the present invention.
Fig. 6 is a schematic structural view of an adjusting assembly according to the present invention.
In the figure, 1-a vibration plate; 11-a resonator plate; 2-damping layer; 3-a bottom plate; 31-a bump; 4-a holding component; 41-a support seat; 42-linking arm; 43-a base; 421-a rotating shaft; 5-a regulating component; 51-screw rod; 511-a handle; 52-lock nut.
Detailed Description
As shown in fig. 1-4, the present invention includes a bottom plate 3 and a vibration transmitting plate 1 for cooperating with the rail bottom of a steel rail, wherein a resonance plate 11 is disposed on a surface of the vibration transmitting plate 1 opposite to the bottom plate 3, and a distance is provided between one end of the resonance plate 11 facing the bottom plate 3 and the bottom plate 3. Damping layer 2 is arranged between the vibration transmission plate 1 and the bottom plate 3, and the damping layer 2 is filled between the vibration transmission plate 1 and the bottom plate 3 and between the resonance sheet 11 and the bottom plate 3 to form a structure that the resonance sheet 11 penetrates through the damping layer 2. Wherein, the surface of the vibration transmission plate 1 provided with the resonance sheet 11 is the surface of the vibration transmission plate 1 matched with the damping layer 2, and the damping layer 2 can be formed by filling one or more damping materials. When the vibration damping plate is used, the vibration damping plate is integrally arranged below the bottom of a steel rail, the bottom plate 3 is fixedly arranged on a foundation under the rail through a corresponding supporting structure or a corresponding mounting structure, and one surface of the vibration damping plate 1, which is far away from the damping layer 2, is connected with the bottom surface of the rail bottom.
According to the invention, the damping layer 2 is arranged between the bottom plate 3 and the vibration transfer plate 1, the lower end of the damping layer 2 is constrained, so that the upper end of the damping layer can vibrate, the lower end forms similar fixed constraint to inhibit the amplitude of the steel rail and dissipate the vibration energy of the steel rail and the vibration energy of the noise reduction damper steel plate, the resonance sheet 11 is arranged on the surface of the vibration transfer plate 1 matched with the damping layer 2, the resonance sheet 11 is arranged in the damping layer 2 in a penetrating manner, the shearing area and the shearing deformation of the damping layer 2 are increased, the vibration energy of the steel rail can be converted into heat energy to the maximum extent, and the vibration reduction and noise reduction effects are improved. The vibration amplitude that the rail produced directly transmits to resonator plate 11 and damping layer 2 department through pass vibration plate 1, carry out one again through restraint damping layer 2 itself and suppress and inhale and shake, and the vibration amplitude of transmission triggers resonator plate 11 cantilever vibration simultaneously, and rethread resonator plate 11 and damping layer 2 carry out two again and suppress and shake for it is better to suppress and shake the effect. The resonance sheet 11 can reduce the overall deformation degree of the damping layer 2 while increasing the shearing area and the shearing deformation of the damping layer 2, thereby avoiding the reaction force generated on the steel rail by the damping layer 2 due to overlarge deformation and avoiding the mutual influence between the steel rail and the damping layer 2.
It is preferable that the resonance plates 11 are provided in two or more number, and all the resonance plates 11 are provided at intervals on one surface of the vibration damping plate 1 facing the base plate 3, as shown in fig. 1, all the resonance plates 11 are inserted into the damping layer 2, and the damping layer 2 is provided at intervals between every two resonance plates 11. The invention further increases the shearing area and shearing deformation of the damping layer 2 by arranging more than two resonance sheets 11. The number, size (including length, height, thickness, etc.), shape and spacing between two resonator plates 11 of the resonator plates 11 may be determined according to actual design requirements. Preferably, all the resonator plates 11 are perpendicular to the bottom surface of the rail, i.e., the resonator plates 11 are disposed downward in the use state.
In the present invention, in the case where all the resonator plates 11 have the same thickness, at least two resonator plates 11 among all the resonator plates 11 have different sizes in the height direction of the rail, and/or at least two resonator plates 11 have different sizes in the length direction of the rail. That is, at least two resonance plates with different heights and/or lengths exist in all the resonance plates 11, so that the number of resonance frequencies is increased, and the frequency range of vibration and noise reduction of the invention is widened. In one embodiment of the present invention, three or more resonator plates 11 are provided, and the height dimension of the three or more resonator plates 11 decreases from the resonator plate 11 located at the middle portion to the resonator plates 11 located at both sides of the resonator plate 11, i.e., the bottom of the resonator plate 11 is formed in a V-shape as shown in fig. 1 and 2. In the embodiment, the height of the resonance sheet 11 is designed in a stepped height, so that the number of resonance frequencies is greatly increased, and the vibration reduction and noise reduction frequency range is further widened. In other embodiments, all the resonance plates 11 may be arranged in a staggered manner or in other arrangements.
As shown in fig. 1 and 2, the resonator plate 11 is preferably arranged along the direction of the vibration transfer plate 1, which is the same as the length direction of the rail, so that in the use process, the resonator plate 11 can generate vibration amplitude along the width direction of the rail, and is more attached to the transverse vibration generated by the rail when a train runs, which is more beneficial to the transmission of vibration, so that the vibration of the rail can be more effectively transmitted to the resonator plate, and the double vibration suppression and vibration absorption effects are further improved.
In one embodiment of the present invention, all the resonator plates 11 are inserted into the damping layer 2, in another embodiment of the present invention, on the basis that the resonator plates 11 are inserted into the damping layer 2, two baffles (not shown) are further disposed on the vibration transmission plate 1, the two baffles are both disposed toward the bottom plate 3, the two baffles are respectively disposed at two sides of the vibration transmission plate 1, all the resonator plates 11 are disposed between the two baffles, one surfaces of the two baffles, which are opposite to each other, are respectively attached to two sides of the damping layer 2, and a gap is disposed between one end of the two baffles, which is away from the vibration transmission plate 1, and the bottom plate 3. In this embodiment, the baffle plate is made of the same material as the resonator plate 11, and can provide the same effect as the resonator plate 11. Through setting up the baffle, can further increase damping layer 2's shear area and shear area, further reduce damping layer 2 whole deformation degree simultaneously.
As shown in fig. 1, 5 and 6, the present invention further includes a supporting mechanism, the supporting mechanism includes a supporting member 4 and an adjusting member 5, the supporting member 4 includes a supporting seat 41 for supporting the bottom plate 3, and the adjusting member 5 can drive the supporting seat 41 to move away from or close to the rail bottom, so as to adjust the overall height and form a restraining pressure on the lower end of the damping layer 2. The bearing component 4 further includes a base 43 and a link arm structure, wherein a single link arm structure includes two link arms 42, the two link arms 42 are hinged to each other through a rotating shaft 421, and two ends of each link arm 42 are hinged to the base 43 and the support base 41 through corresponding shafts respectively. The adjusting component 5 comprises a screw rod 51, the axis of the screw rod 51 is perpendicular to the axes of the rotating shafts 421 in the two groups of connecting arm structures, and the screw rod 51 is in direct or indirect threaded fit with the rotating shaft 421 of one group of connecting arm structures and is in direct or indirect rotating fit with the rotating shaft 421 of the other group of connecting arm structures. Specifically, the screw 51 radially penetrates through the middle of the rotating shaft 421 of one of the sets of link arm structures, and the rotating shaft 421 is in threaded fit with the screw 51; one end of the screw 51 is rotatably connected to the middle of the rotating shaft 421 of the other set of link arm structure through a connecting member, so that the rotating shaft 421 moves linearly along with the screw 51 but does not rotate along with the screw 51. In the preferred embodiment of the present invention, a support seat 41 is rotatably connected to each of the single link arm structures, and the heights of the two support seats 41 can be adjusted simultaneously by rotating the screw 51, so that the heights of the two ends can be adjusted simultaneously, thereby ensuring uniform support of the rail. The number of the supporting mechanisms arranged in the vibration damping device is determined according to the actual supporting requirement.
The bottom plate 3 is V-shaped. First, it is substantially the same shape as the bottom of the resonator plate 11, so that the thickness of the damping layer 2 filled between all the resonator plates 11 and the chassis base 3 can be substantially the same, improving the balance and uniformity of vibration damping. On the other hand, compared with the flat plate type design, the contact area between the V-shaped bottom plate 3 and the damping layer 2 is larger, and the restraint effect on the lower end of the damping layer 2 is better. Preferably, a protrusion 311 is disposed on a surface of the bottom plate 3, which is matched with the damping layer 2, and the protrusion 311 is inserted into the damping layer 2, so as to further increase the shear area and the shear deformation of the damping layer 2. Secondly, there can be more installation spaces between the bottom of the bottom plate 3 that is the V type and the basis under the rail, can be convenient for the installation of bearing subassembly 4.
To facilitate turning the screw 51, the end of the screw 51 is provided with a handle 511. The adjusting assembly 5 further includes a lock nut 52 for limiting the screw 51, after the screw 51 is adjusted in place, the screw 51 is limited by screwing the lock nut 52, so as to avoid the screw 51 from deflecting, and preferably, the lock nut 52 is a lock nut. The surface of the locking nut 52 is provided with scale mark marks for facilitating subsequent inspection.
According to the invention, the adjustable supporting mechanism is arranged at the lower end of the damping device, and the damping device can support the steel rail while realizing the damping effect. When the vibration-damping device is used, the vibration-damping device can be arranged in the area between every two fasteners to restrain the fluctuation of the steel rail in the breakpoint support between the traditional fasteners, so that the vibration damping device can provide continuous support for the steel rail between every two fasteners, a fixed support is formed between the steel rail and a track, the bending vibration form caused by discrete support of the steel rail is changed, and the vibration transmitted to a track bed by the steel rail and the corrugation phenomenon of the steel rail are effectively reduced.
Claims (10)
1. The utility model provides a ballastless track rail vibration damper, characterized by, include bottom plate (3) and be used for with rail end complex pass board (1) that shakes, pass and be provided with damping layer (2) between board (1) and bottom plate (3) of shaking, pass board (1) that shakes relative with bottom plate (3) and with damping layer (2) complex one side be equipped with resonance piece (11), resonance piece (11) are worn to establish in damping layer (2).
2. The vibration damper for the ballastless track steel rail according to claim 1, wherein the number of the resonance sheets (11) is more than two, and every two resonance sheets (11) are arranged at intervals.
3. The vibration damper for the steel rail of the ballastless track according to claim 2, wherein at least two resonance plates (11) of the resonance plates (11) have different dimensions in the height direction of the steel rail and/or at least two resonance plates (11) have different dimensions in the length direction of the steel rail.
4. The vibration damper for the ballastless track steel rail according to claim 2, wherein the resonance piece (11) is provided with more than three, and the distance between one end of the resonance piece (11) facing the bottom plate (3) and the vibration transfer plate (1) is gradually decreased from the resonance piece (11) positioned in the middle to the resonance pieces (11) positioned on both sides of the resonance piece (11) in the middle.
5. The vibration damper for the ballastless track steel rail according to claim 4, wherein the bottom plate (3) is V-shaped.
6. The vibration damper for the steel rail of the ballastless track according to any one of claims 1 to 5, wherein the resonance piece (11) is arranged along the vibration transfer plate (1) in the same direction with the length of the steel rail.
7. The vibration damper for the steel rail of the ballastless track according to any one of claims 1-5, wherein two baffles are further disposed on the vibration transfer plate (1), the two baffles are both disposed toward the bottom plate (3), the resonance sheet (11) is disposed between the two baffles, the surfaces of the two baffles opposite to each other are respectively attached to two sides of the damping layer (2), and a gap is disposed between one end of the two baffles, which is far away from the vibration transfer plate (1), and the bottom plate (3).
8. The vibration damper for the ballastless track steel rail according to any one of claims 1 to 5, wherein a protrusion (311) is arranged on the surface of the bottom plate (3) matched with the damping layer (2), and the protrusion (311) is arranged in the damping layer (2) in a penetrating way.
9. The vibration damper for the ballastless track steel rail of any one of claims 1-5, further comprising a supporting mechanism, wherein the supporting mechanism comprises a supporting component (4) and an adjusting component (5), the supporting component (4) comprises a supporting seat (41) for supporting the base plate (3), and the adjusting component (5) can drive the supporting seat (41) to move towards the direction far away from or close to the rail bottom.
10. The vibration damper for the ballastless track steel rail according to claim 9, wherein the supporting assembly (4) further comprises a base (43) and an arm connecting structure, the arm connecting structure comprises two arm connecting structures (42), the two arm connecting structures (42) are hinged through a rotating shaft (421), two ends of the two arm connecting structures (42) are respectively hinged with the base (43) and the supporting seat (41), the arm connecting structures are provided with two groups, the adjusting assembly (5) comprises a screw rod (51), the axis of the screw rod (51) is perpendicular to the axis of the rotating shaft (421) in the two groups of arm connecting structures, and the screw rod (51) is directly or indirectly in threaded fit with the rotating shaft (421) of one group of arm connecting structures and is directly or indirectly in rotational fit with the rotating shaft (421) of the other group of arm connecting structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236129.9A CN113818291A (en) | 2021-10-22 | 2021-10-22 | Steel rail vibration damper for ballastless track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236129.9A CN113818291A (en) | 2021-10-22 | 2021-10-22 | Steel rail vibration damper for ballastless track |
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| Publication Number | Publication Date |
|---|---|
| CN113818291A true CN113818291A (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111236129.9A Pending CN113818291A (en) | 2021-10-22 | 2021-10-22 | Steel rail vibration damper for ballastless track |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3790078A (en) * | 1970-05-28 | 1974-02-05 | Akustikbyran Ab | Vibrator damping of vehicle path |
| US20040040809A1 (en) * | 2000-06-02 | 2004-03-04 | Bengt-Goran Gustavsson | Method for damping vibrations and a method for mounting the device |
| JP2006063583A (en) * | 2004-08-25 | 2006-03-09 | Sekisui Chem Co Ltd | Damping member and vibration control track structure |
| CN203654098U (en) * | 2013-12-05 | 2014-06-18 | 深圳市市政设计研究院有限公司 | Vibration and noise reduction device for railway traffic equipment |
| CN112144323A (en) * | 2020-10-22 | 2020-12-29 | 中铁二院工程集团有限责任公司 | Ballastless track steel rail high damping fixed knot constructs |
-
2021
- 2021-10-22 CN CN202111236129.9A patent/CN113818291A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3790078A (en) * | 1970-05-28 | 1974-02-05 | Akustikbyran Ab | Vibrator damping of vehicle path |
| US20040040809A1 (en) * | 2000-06-02 | 2004-03-04 | Bengt-Goran Gustavsson | Method for damping vibrations and a method for mounting the device |
| JP2006063583A (en) * | 2004-08-25 | 2006-03-09 | Sekisui Chem Co Ltd | Damping member and vibration control track structure |
| CN203654098U (en) * | 2013-12-05 | 2014-06-18 | 深圳市市政设计研究院有限公司 | Vibration and noise reduction device for railway traffic equipment |
| CN112144323A (en) * | 2020-10-22 | 2020-12-29 | 中铁二院工程集团有限责任公司 | Ballastless track steel rail high damping fixed knot constructs |
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