CN213596713U - Steel rail damper for multi-frequency vibration - Google Patents
Steel rail damper for multi-frequency vibration Download PDFInfo
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- CN213596713U CN213596713U CN202021970999.XU CN202021970999U CN213596713U CN 213596713 U CN213596713 U CN 213596713U CN 202021970999 U CN202021970999 U CN 202021970999U CN 213596713 U CN213596713 U CN 213596713U
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- rail
- damper
- foot
- mass block
- steel rail
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Abstract
The utility model discloses a rail damper to multifrequency vibration, including quality piece (1), first cushion (2) and upper portion fastener (3), between rail foot and quality piece (1) are arranged in to first cushion (2), quality piece (1) and upper portion fastener (3) centre gripping are on rail foot, quality piece (1) are flat, its upper surface has the recess, first cushion (2) are arranged in the recess, parcel rail foot bottom surface is provided with the bolt on quality piece (1), upper portion fastener (3) are through bolt and quality piece (1) swing joint, the lower extreme pressure of upper portion fastener (3) is at rail foot upper surface. The utility model provides a rail damper to multi-frequency vibration has the vibration that can the accurate suppression rail, can realize that field parameter is adjustable, the simple operation, disturb a great deal of advantages such as less to the web of a rail.
Description
Technical Field
The utility model relates to a track traffic field, concretely relates to rail damper especially relates to rail damper to multi-frequency vibration.
Background
When a train passes through, the wheels of the train interact with the steel rail, because the steel rail is not smooth, the wheels vibrate on the steel rail, and when the wheels interact with the steel rail, irregular vibration is generated, so that wave-shaped abrasion, namely wave abrasion, is generated on the steel rail. Rail corrugation typically generates noise at the same time, with frequencies ranging from tens of hertz to kilohertz, known as howling.
The steel rail damper is used for solving the problems of steel rail squeaking noise and corrugation, and reduces vibration of a steel rail by using a vibration damping device consisting of a mass system, an elasticity system and a damping system. A common rail damper of the type under application number 201220172478.9, which has mass blocks and elastic blocks mounted on both sides of a rail web and fixed by fasteners; for example, in the steel rail and the damping vibration absorber thereof with application number 201110156390.8, damping plates, metal constraining plates and the like are arranged on two sides of the rail web to absorb vibration energy of the steel rail. The damper placed at the rail web part occupies the rail web space, influences the installation of signal equipment (such as axle counters and the like) and hinders the ultrasonic flaw detection of the steel rail in daily maintenance and inspection.
In addition, the conventional steel rail damper generally cannot be designed for a certain frequency, the use effect is not necessarily good after installation, although the steel rail damper designed for a certain frequency, such as the steel rail resonant damper with application number 201620329477.9, is also provided in the prior art, the product frequency and the rigidity parameters need to be designed in advance according to requirements, and once the parameters are determined, the adjustment cannot be performed when the steel rail damper is installed and used on site. The vibration and squeal conditions with different requirements under different working conditions need customized production, the production and processing efficiency is low, and the noise and vibration frequency parameters of the same site are not single, so that the same parameters of the same batch of products are generally difficult to meet the requirements.
Therefore, the prior art needs to research and design a rail damper which has small interference to the rail web and can adapt to multi-frequency vibration.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above problems, the present inventors have conducted intensive studies to design a rail damper for multi-frequency vibration, which includes a mass 1, a first elastic pad 2 and an upper clip 3, and the present invention is directed to provide the following aspects:
1. a rail damper for multi-frequency vibration, wherein a first elastic pad 2 is disposed between a rail foot and a mass block 1, the mass block 1 and an upper fastener 3 are clamped on the rail foot,
the mass block 1 is flat, the upper surface of the mass block is provided with a groove, and the first elastic pad 2 is arranged in the groove and wraps the bottom surface of the rail foot of the steel rail;
the mass block 1 is provided with a bolt, the upper fastener 3 is movably connected with the mass block 1 through the bolt, and the lower end of the upper fastener 3 is pressed on the upper surface of the rail foot of the steel rail.
2. The rail damper for multi-frequency vibration as described in the above 1, wherein the bolt is a bolt having a locking function.
3. The rail damper for multi-frequency vibration as described in the above item 1, wherein the upper clip 3 is rod-like, and one end of the upper clip 3 is in contact with the upper surface of the rail foot.
4. The rail damper for multi-frequency vibration as described in the above item 3, wherein an elastic layer 31 is provided on the upper clip 3 at a position contacting the rail foot.
5. As described in the above 1, in the rail damper for multi-frequency vibration, the upper fastening member 3 is similar to a flat plate, and the lower end of the upper fastening member 3 has an arc structure corresponding to the upper surface of the rail foot, so that the lower end of the upper fastening member 3 is attached to the upper surface of the rail foot.
6. The rail damper for multi-frequency vibration as described in the above item 5, wherein the second elastic pad 4 is provided between the upper clip 3 and the rail foot.
7. The rail damper for multi-frequency vibration as described in the above 3 or 5, wherein the upper fastening member 3 further has a downward protrusion at an end away from the rail foot, and the mass block 1 has a concave pit corresponding to the protrusion.
8. The rail damper for multi-frequency vibration as described in the above 3 or 5, wherein the end of the upper fastening member 3 away from the rail foot is movably connected to the mass block 1 by a pin
9. The rail damper for multi-frequency vibration as described in the above 5, wherein the upper clamp 3 is connected to the mass block 1 by a plurality of bolts.
10. The rail damper for multi-frequency vibration as described in the above 9, wherein the mass of the upper clamp 3 located at both sides of the rail foot is different.
The utility model provides a rail damper to multifrequency vibration has following beneficial effect:
(1) according to the steel rail damper aiming at the multi-frequency vibration provided by the utility model, the vibration of the steel rail can be accurately inhibited;
(2) according to the steel rail damper aiming at multi-frequency vibration provided by the utility model, the field parameter can be adjusted, the requirements of various field parameters can be met, and the steel rail damper is suitable for a wider frequency range;
(3) according to the steel rail damper aiming at multi-frequency vibration provided by the utility model, the operation is convenient, and the adaptation to the multi-frequency vibration can be completed only by adjusting the pretightening force of the bolt;
(4) according to the utility model provides a rail attenuator to multi-frequency vibration installs at the rail foot position, and is less to rail web (web) interference, to the maintenance of operation period rail welding seam, the appearance of operation period rail detects etc. and is noiseless.
Drawings
Fig. 1 shows a schematic structural view of a rail damper for multi-frequency vibration according to a preferred embodiment of the present invention;
FIG. 2 shows a schematic cross-sectional view along AA in FIG. 1;
fig. 3 shows a schematic structural view of a rail damper for multi-frequency vibration according to a preferred embodiment of the present invention;
FIG. 4 is a schematic view of the cross-sectional structure along direction AA in FIG. 3;
FIG. 5 shows a single peak noise spectrogram;
FIG. 6 shows a multi-peak noise spectrogram;
fig. 7 shows a schematic structural view of a rail damper for multi-frequency vibration according to a preferred embodiment of the present invention;
FIG. 8 shows a schematic cross-sectional view AA in FIG. 7;
fig. 9 shows a schematic view of a rail damper upper clamp for multi-frequency vibration according to a preferred embodiment of the present invention.
The reference numbers illustrate:
1-a mass block;
2-a first resilient pad;
3-upper fasteners;
31-an elastic layer;
4-second elastic pad.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and embodiments. The features and advantages of the present invention will become more apparent from the description.
In which, although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The relationship between the vibration frequency and the rigidity and the mass of the steel rail damper is
The frequency f and
is in direct proportion to
In inverse proportion, the stiffness k and mass m can be adjusted for different frequency f requirements. The mass m is related to the overall dimension and material of the mass block, the rigidity k is related to the parameters, the appearance and the external force applied to the elastic pad material, and the external force can be controlled by the pre-tightening force, namely the frequency f can be adjusted by adjusting the material of the mass block, the material of the elastic pad and the external force applied to the elastic pad.
The utility model provides a rail damper to multifrequency vibration, including quality piece 1, first cushion 2 and upper portion fastener 3.
The first elastic cushion 2 is arranged between the rail foot and the mass block 1, and the mass block 1 and the upper fastener 3 are clamped on the rail foot, as shown in fig. 1.
In one embodiment, the mass block 1 is a flat plate, and has a groove on its upper surface, the cross-sectional shape of the groove is similar to the bottom surface of the rail foot, and the cross-sectional area is slightly larger than the rail foot, so that the rail foot can be placed in the groove. The first elastic pad 2 is arranged in the groove and wraps the bottom surface of the steel rail foot, so that the vibration reduction effect is achieved.
Furthermore, the upper fastener 3 is movably connected with the mass block 1, the distance between the upper fastener 3 and the mass block 1 is adjustable, the lower end of the upper fastener 3 is pressed on the upper surface of the rail foot of the steel rail, and the frequency of the steel rail damper can be adjusted by adjusting the pressure of the upper fastener 3 and the rail foot of the steel rail.
In a preferred embodiment, the upper fastening member 3 is rod-like, one end of the upper fastening member 3 is in contact with the upper surface of the rail foot, a bolt is disposed on the mass block 1, the upper fastening member 3 is movably connected with the mass block 1 through the bolt, as shown in fig. 1 and 2, by screwing a nut matched with the bolt, the pre-tightening force between the upper fastening member 3 and the rail foot is adjusted, and further, the external force adjustment on the elastic material disposed at the bottom of the rail foot is realized, and the adjustment of the adaptation frequency of the rail damper is realized.
Further, the bolt is for having locking function's bolt the utility model discloses in, it is right the concrete structure of bolt does not do special restriction, can be any kind of bolt structure that has locking function, for example two nut bolts, locking self-locking nut bolt etc..
In a more preferred embodiment, a downward protrusion is further provided at one end of the upper fastening member 3 away from the rail foot, and a concave pit is further provided at the corresponding position of the mass block 1, the protrusion is matched with the concave pit in shape, so that when one end of the upper fastening member 3 is pressed against the rail foot, the other end of the upper fastening member is in full contact with the mass block 1, and the condition that the pressure on the rail foot is changed due to the sliding or rotating of the upper fastening member 3 is prevented.
In another more preferred embodiment, one end of the upper fastener 3, which is far away from the rail foot of the rail, is movably connected with the mass block 1 through a pin, as shown in fig. 3 and 4, in a pin connection manner, so that all parts of the whole rail damper are integrated and convenient to operate.
According to the utility model discloses, preferably upper portion fastener 3 is last still to be provided with elastic layer 31 with rail foot contact position, elastic layer 31 plays the cushioning effect, avoids upper portion fastener 3 and rail foot direct impact to cause rail foot damage, and simultaneously, elastic layer 31 can also play on the increase upper portion fastener 3 and the effect of frictional resistance between the rail foot, further prevents to appear because the condition of the rotatory change to rail foot pressure that makes of upper portion fastener 3 slip.
The utility model discloses in, except the material through changing quality piece 1 and first cushion 2, can also realize rail damper adaptation vibration frequency's change to rail foot pressure through adjusting upper portion fastener 3. When the vibration or noise frequency to be solved is a single peak, as shown in fig. 5, the adaptation to different vibration frequencies is realized by adjusting the pretightening force of the bolt.
When the frequency of the vibration or noise to be solved is multi-peak, as shown in fig. 6, preferably, the upper fastening member 3 is similar to a flat plate, as shown in fig. 9, the lower end of the upper fastening member 3 has an arc structure corresponding to the upper surface of the rail foot, so as to be contacted with the rail foot more closely. A second resilient pad 4 is provided between the upper clip 3 and the upper surface of the rail foot, as shown in figures 7 and 8.
The design that upper portion fastener 3 is flat-plate-shaped for upper portion fastener 3's quality is enough big, thereby can play the effect that acts as the quality piece, and because its area of contact with rail foot is bigger, thereby make second cushion 4 can have stronger damping effect, and further, set second cushion 4 to the material different with first cushion 2, can realize the adaptation of rail damper to two different vibration frequencies.
More preferably, the upper fastener 3 is connected to the mass 1 by a plurality of bolts, so that the upper fastener 3 is more firmly fixed to the mass 1. More preferably, the effect of adapting to different frequencies can be achieved by changing the material of the upper fasteners 3, and the mass of the upper fasteners 3 can be changed by changing the material of the upper fasteners 3, so that the adaptation frequency of the steel rail damper can be changed.
In a preferred embodiment, the upper clips 3 on either side of the rail foot are provided with different masses or the second resilient pads 4 on either side of the rail foot are provided with different materials so that the rail damper can accommodate a variety of different vibration frequencies.
The present invention has been described above in connection with preferred embodiments, which are merely exemplary and illustrative. On this basis, can be right the utility model discloses carry out multiple replacement and improvement, these all fall into the utility model discloses a protection scope.
Claims (10)
1. A rail damper aiming at multi-frequency vibration comprises a mass block (1), a first elastic cushion (2) and an upper fastener (3), and is characterized in that,
the first elastic cushion (2) is arranged between the rail foot of the steel rail and the mass block (1), the mass block (1) and the upper fastener (3) are clamped on the rail foot of the steel rail,
the mass block (1) is flat, the upper surface of the mass block is provided with a groove, and the first elastic pad (2) is arranged in the groove and wraps the bottom surface of the rail foot of the steel rail;
the mass block (1) is provided with a bolt, the upper fastener (3) is movably connected with the mass block (1) through the bolt, and the lower end of the upper fastener (3) is pressed on the upper surface of the rail foot of the steel rail.
2. A rail damper for multiple frequency vibrations according to claim 1,
the bolt is a bolt with a locking function.
3. A rail damper for multiple frequency vibrations according to claim 1,
the upper fastener (3) is rod-like, and one end of the upper fastener (3) is in contact with the upper surface of the rail foot of the steel rail.
4. A rail damper for multiple frequency vibrations according to claim 3,
an elastic layer (31) is arranged at the contact position of the upper fastener (3) and the rail foot of the steel rail.
5. A rail damper for multiple frequency vibrations according to claim 1,
the upper fastener (3) is similar to a flat plate, and the lower end of the upper fastener (3) is provided with an arc structure corresponding to the upper surface of the steel rail foot, so that the lower end of the upper fastener (3) is attached to the upper surface of the steel rail foot.
6. A rail damper for multiple frequency vibrations according to claim 5,
a second elastic cushion (4) is arranged between the upper fastener (3) and the rail foot of the steel rail.
7. A rail damper for multiple frequency vibrations according to claim 3 or 5,
and one end of the upper fastener (3) far away from the rail foot of the steel rail is also provided with a downward bulge, and a pit is arranged on the mass block (1) corresponding to the bulge.
8. A rail damper for multiple frequency vibrations according to claim 3 or 5,
one end of the upper fastener (3) far away from the rail foot of the steel rail is movably connected with the mass block (1) through a pin shaft.
9. A rail damper for multiple frequency vibrations according to claim 5,
the upper fastener (3) is connected with the mass block (1) through a plurality of bolts.
10. A rail damper for multiple frequency vibrations according to claim 9,
the two upper fasteners (3) on the two sides of the rail foot of the steel rail have different quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021970999.XU CN213596713U (en) | 2020-09-10 | 2020-09-10 | Steel rail damper for multi-frequency vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021970999.XU CN213596713U (en) | 2020-09-10 | 2020-09-10 | Steel rail damper for multi-frequency vibration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213596713U true CN213596713U (en) | 2021-07-02 |
Family
ID=76586867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021970999.XU Active CN213596713U (en) | 2020-09-10 | 2020-09-10 | Steel rail damper for multi-frequency vibration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213596713U (en) |
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2020
- 2020-09-10 CN CN202021970999.XU patent/CN213596713U/en active Active
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