CN109868695B - Novel periodic fastener structure based on hydraulic viscous damping - Google Patents
Novel periodic fastener structure based on hydraulic viscous damping Download PDFInfo
- Publication number
- CN109868695B CN109868695B CN201910286003.9A CN201910286003A CN109868695B CN 109868695 B CN109868695 B CN 109868695B CN 201910286003 A CN201910286003 A CN 201910286003A CN 109868695 B CN109868695 B CN 109868695B
- Authority
- CN
- China
- Prior art keywords
- elastic strip
- hydraulic
- hydraulic viscous
- mass
- viscous damper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Vibration Prevention Devices (AREA)
- Railway Tracks (AREA)
Abstract
The invention provides a novel periodic fastener structure based on hydraulic viscous damping, which is characterized in that: the device comprises a tuning mass buckling elastic strip, a spiral spike, an elastic washer, a nut, a hydraulic viscous damper and a heightening base plate. The invention has simple integral structure and convenient manufacture, can be arranged in rail transit such as high-speed rail, subway and the like, can effectively reduce and absorb the influence on the surrounding environment caused by wheel track vibration caused by the irregularity of the rail, effectively reduce the ground vibration caused by the train in the running process and improve the living environment of residents around the line.
Description
Technical Field
The invention relates to a fastener system, belongs to the technical field of vibration and noise reduction, and particularly relates to a novel periodic fastener structure based on hydraulic viscous damping.
Background
In the vibration control measures of rail transit such as high-speed railway, subway, adopt the damping fastener to control the influence to the surrounding environment that the wheel rail vibration that causes because the track is not smooth and smooth, the technical standard that reaches is limited, can not satisfy current vibration noise control standard sometimes, can increase the vibration of surrounding environment on the contrary, can not reach the requirement of technical standard. It is to be understood that in the known vibration control measures, the vibrations are not completely eliminated, but are only attenuated by this technique until the effect of the vibrations is within the range allowed by us.
For example, the vibration response of the ground can be theoretically reduced by using a vibration damping fastener such as a double-layer nonlinear fastener, a floating rail fastener, etc. in a subway tunnel, but sometimes the ground vibration is amplified, and particularly the floating rail fastener and the double-layer nonlinear fastener can shift the ground vibration to a low frequency. The expected damping effect is often not achieved, and due to the adoption of the damping fastener, the vertical rigidity of the fastener is lower than that of a traditional fastener, so that the strength of the track is reduced, and the occurrence of grinding and wave grinding defects of the side of the steel rail is caused.
The rail-fastener-sleeper has good periodicity, and in solid physics, the periodic structure has attenuation domain characteristics of elastic waves, namely band gap characteristics. When the frequency of the elastic wave falls within the attenuation domain, the propagation of the wave will be greatly attenuated.
The working principle of the gap viscous damper is that when the damper is impacted by the outside, the cylinder body and the piston generate relative motion, the volume on one side of the piston is reduced, viscous damping materials are forced to flow to the side with the increased volume through the gap, and the shear flow of the damping materials generates damping force to dissipate impact energy, so that the purpose of buffering is achieved. The damper is expected to generate great resistance, can limit the displacement of the steel rail, and can absorb energy and share impact force.
By utilizing the band gap property of the periodic structure, a brand-new vibration isolation and noise reduction structure can be designed, a novel fastener is designed by combining the gap viscous damping principle, and the fastener system is expected to generate great resistance under the condition of keeping great rigidity, so that the displacement of the steel rail can be limited, and energy and impact force can be absorbed and shared. Proceed on the wave propagation path, reducing the ground vibration response.
Disclosure of Invention
The invention aims to provide a novel periodic fastener structure based on hydraulic viscous damping, which effectively reduces the ground vibration caused by a train in the running process and improves the living environment of residents around the line.
Specifically, the invention aims to provide a novel periodic fastener structure based on hydraulic viscous damping, which is characterized in that: the method is characterized in that: the device comprises a tuning mass buckling elastic strip 1, a spiral spike 2, an elastic washer 3, a nut 4, a hydraulic viscous damper 5 and a heightening base plate 6.
Further, it is characterized in that: tuned mass withhold elastic strip 1 is a novel elastic strip produced by carbon fiber materials, compared with traditional elastic materials, the rigidity and the intensity of carbon fiber are both due to traditional elastic strip materials, and the density is only about 1/4 of traditional elastic strips. The middle part of the tuning mass buckling elastic strip is provided with a mass embedding hole 1-1 convenient to adjust, and the function of controlling the tuning mass is achieved by changing the mass of an embedding body 1-2 in the embedding hole. The coordinated mass withholding elastic strip 1 is fixed on a hydraulic viscous damper 5 through a spiral spike 2, an elastic washer 3 and a nut 4.
Further, it is characterized in that: the tuning mass buckling elastic strip 1 is in contact with the rail web of the steel rail, the tuning mass buckling elastic strip 1 is subjected to texturing processing on a contact surface of the rail web of the steel rail, and a W-shaped fold line is arranged on the textured surface 1-1 to increase the frictional resistance of the contact surface and prevent the tuning mass buckling elastic strip 1 from generating relative displacement with the steel rail.
Further, it is characterized in that: the tuning mass buckling elastic strip 1 is provided with a mass adjusting cavity in the middle, and the mechanical model of the whole tuning mass buckling elastic strip is adjusted through the mass M of the embedded body 1-2. Through simulation calculation, when the mass M of the embedded body 1-2 is changed, different band gap characteristics appear, and vibration reduction is performed on working conditions with different requirements.
Further, it is characterized in that: spiral spike 2 is a r type structure, can withhold down harmonious quality and press bullet strip 1 and tightly fix through elastic washer 3 and nut 4 and hydraulic pressure viscous damper 5, can make harmonious quality withhold bullet strip 1 and tightly withhold the rail right.
Further, it is characterized in that: the spiral spike 2 comprises a vertical part 2-1, a transverse part 2-2 and a baffle 2-3. The vertical portion 2-1 is shown threaded to facilitate securing the tuning mass snap strip 1 to the hydraulic viscous damper 5 and to secure the piston 5-3 within the hydraulic viscous damper. The transverse portion 2-2 is a hold down device that can be rotated to hold down the tuning mass holding down spring 1 to achieve a further hold down on the rail. The baffle 2-3 serves the purpose of compressing the insert 1-2 when the tuning mass is buckled against the resilient strip 1 by the transverse portion 2-2.
Further, it is characterized in that: the spring washer 3 has a suitable stiffness and should be deformed to some extent in addition to ensuring a good function of the washer.
Further, it is characterized in that: the hydraulic viscous damper 5 is of a cylindrical structure with the inner diameter D, 4 bolt holes 5-1 are respectively arranged on the bottom of the hydraulic viscous damper, and the hydraulic viscous damper is fixed on a sleeper through the 4 bolt holes 5-1. The interior is filled with 5-2 parts of dimethyl silicone oil, and the density of the dimethyl silicone oil is rho, the dynamic viscosity mu and the volume elastic coefficient K. A piston 5-3 with the diameter d is arranged in the screw spike 2, the piston 5-2 is viscous with hydraulic pressureThe gap between the inner walls of the damper 5 is h. The force is transmitted to the hydraulic viscous damper 5 through the tuning mass buckling elastic strip 1, and the volume elastic modulus of oil is
V is the volume of oil above the piston, Δ V is the volume change, and Δ p is the pressure change. Further, it is characterized in that: the heightening base plate 6 has great rigidity, and does not deform under the working state of the fastener. K is controlled by controlling a clearance h between the piston 5-2 and the inner wall of the hydraulic viscous damper 5. The energy of the impact is dissipated by the shear flow of the oil.
Drawings
Fig. 1 is a structural schematic diagram (along the direction of a steel rail) of a novel periodic fastener based on hydraulic viscous damping.
Fig. 2 is a structural schematic diagram (steel rail side direction) of a novel periodic fastener based on hydraulic viscous damping.
Fig. 3 is a schematic view of the tuned mass buckle spring 1 of fig. 1, wherein a is a cross-sectional view, b is a partial side view, and c is an insert structure view.
Figure 4a is a schematic view of the spike 2 of figure 1.
Figure 4b is a top view of the transverse portion 2-2 of figure 4 a.
Fig. 5 is a schematic view of the hydraulic viscous damper 5 of fig. 1.
Detailed Description
In order to make the technical solution and advantages of the present invention more clear, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
The first embodiment is as follows: with reference to fig. 1 to 5, an object of the present embodiment is to provide a novel periodic fastener structure based on hydraulic viscous damping, taking a ballastless track as an example, and the periodic fastener structure is characterized in that: the device comprises a tuning mass buckling elastic strip 1, a spiral spike 2, an elastic washer 3, a nut 4, a hydraulic viscous damper 5 and a heightening base plate 6.
Wherein, tuning mass withhold an elastic strip 1 one end and contact with rail web of the rail, another end is fixed on hydraulic viscous damper 5. The tuning mass buckling elastic strip 1 is fixed on a steel rail web and the hydraulic viscous damper 5 through parts such as a spiral spike 2.
Preferably, harmonious mass withhold bullet strip 1 is a novel bullet strip of producing by carbon fiber material, compares with traditional elastic material, and the rigidity and the intensity of carbon fiber are all because traditional bullet strip material, and the density only has about 1/4 of traditional bullet strip. The middle part of the tuning mass buckling elastic strip is provided with a mass embedding hole 1-1 convenient to adjust, and the function of controlling the tuning mass is achieved by changing the mass of an embedding body 1-2 in the embedding hole. The coordinating mass withholds the elastic strip 1.
Preferably, the tuning mass buckling elastic strip 1 is in contact with a rail web of the steel rail, the tuning mass buckling elastic strip 1 is subjected to texturing processing on a contact surface of the rail web of the steel rail, and a W-shaped fold line is arranged on the textured surface 1-1 to increase the friction resistance of the contact surface and prevent the tuning mass buckling elastic strip 1 from generating relative displacement with the steel rail.
Preferably, the tuning mass withholding elastic strip 1 is provided with a mass adjusting cavity in the middle, and the mechanical model of the whole tuning mass withholding elastic strip is adjusted through the mass M of the embedded body 1-2. Through simulation calculation, when the mass M of the embedded body 1-2 is changed, different band gap characteristics appear, and vibration reduction is performed on working conditions with different requirements.
Preferably, the screw spike 2 is a r-shaped structure, and the tuning mass fastening elastic strip 1 can be tightly fixed with the hydraulic viscous damper 5 through the elastic washer 3 and the nut 4 downwards, and the tuning mass fastening elastic strip 1 can be tightly fastened on the steel rail upwards.
Preferably, the screw spike 2 comprises a vertical portion 2-1 and a lateral portion 2-2 and a baffle 2-3, and preferably, the angle between the vertical portion 2-1 and the lateral portion 2-2 is 90 ° to 100 °, and more preferably, 95 ° which is a slightly obtuse angle, which enables higher compressive strength in a space saving manner. The vertical part 2-1 is threaded on the surface to fix the tuning mass withholding elastic strip 1 on the hydraulic viscous damper 5, and preferably, the vertical part 2-1 passes through the hydraulic viscous damper 5 and is fixed at the bottom thereof and fixes the piston 5-3 in the hydraulic viscous damper. The transverse part 2-2 is a spiral pressing device, and the length of the transverse part 2-2 can be tightly adjusted through rotation, so that the tuning mass can be pressed to buckle the elastic strip 1 to achieve the purpose of tightly buckling the steel rail. The baffle 2-3 serves the purpose of compressing the insert 1-2 when the tuning mass is buckled against the resilient strip 1 by the transverse portion 2-2. The screw spike 2 is suitable for 50 and 60 rails commonly used in the state and subway, and can be used for different types of rails by adjusting the length of the transverse part 2-2.
Preferably, the spring washer 3 has a suitable stiffness and is deformed to a certain extent in addition to ensuring that the function of the washer is well satisfied.
Preferably, the hydraulic viscous damper 5 is a cylindrical structure with the inner diameter D, and the bottom is provided with a foot which is respectively provided with 4 bolt holes 5-1, and the hydraulic viscous damper is fixed on a sleeper through the 4 bolt holes 5-1. The interior is filled with 5-2 parts of dimethyl silicone oil, and the density of the dimethyl silicone oil is rho, the dynamic viscosity mu and the volume elastic coefficient K. The diameter d of a built-in piston 5-3 is fixed on the spiral spike 2, and the clearance between the piston 5-2 and the inner wall of the hydraulic viscous damper 5 is h. The force is transmitted to the hydraulic viscous damper 5 through the tuning mass buckling elastic strip 1, and the volume elastic modulus of oil is
V is the volume of oil above the piston, Δ V is the volume change, and Δ p is the pressure change. The heightening base plate 6 has great rigidity, and does not deform under the working state of the fastener. K is controlled by controlling a clearance h between the piston 5-2 and the inner wall of the hydraulic viscous damper 5. The energy of the impact is dissipated by the shear flow of the oil.
It should be noted that the above embodiment is also suitable for different track forms, and when the main relationship frequency bands are different, only a slight adjustment needs to be made on the insert mass M according to the requirement.
The above-listed detailed description is only a specific description of a possible embodiment of the present invention, and they are not intended to limit the scope of the present invention, and equivalent embodiments or modifications made without departing from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (5)
1. The utility model provides a novel periodic fastener structure based on hydraulic pressure viscous damping, its characterized in that: the device comprises a tuning mass buckling elastic strip, a spiral spike, an elastic washer, a nut, a hydraulic viscous damper and a heightening base plate;
one end of the tuning mass buckling elastic strip is in contact with the rail web of the steel rail, and the other end of the tuning mass buckling elastic strip is fixed on the hydraulic viscous damper; the tuning mass buckling elastic strip is fixed on the hydraulic viscous damper through a spiral spike, an elastic washer and a nut; the height-adjusting tie plate is arranged on the sleeper, and the hydraulic viscous damper is arranged on the height-adjusting tie plate;
the screw spike is a Gamma-shaped structure, and downwards fastens the tuning mass fastening elastic strip and the hydraulic viscous damper, and upwards fastens the tuning mass fastening elastic strip to tightly fasten the steel rail; the spiral spike comprises a vertical part, a transverse part and a baffle plate; the surface of the vertical part is provided with threads so as to fix the tuning mass buckling elastic strip on the hydraulic viscous damper and fix a piston in the hydraulic viscous damper; the transverse part is a pressing device, and can tightly press the tuning mass buckling elastic strip through rotation so as to achieve the purpose of further tightly buckling the steel rail; when the tuning mass is buckled through the transverse part, the baffle plays a role in compressing the embedded body.
2. The novel periodic fastener structure based on hydraulic viscous damping as claimed in claim 1, wherein: the tuned mass buckling elastic strip is a novel elastic strip produced by a carbon fiber material, compared with a traditional elastic material, the rigidity and the strength of the carbon fiber material are superior to those of the traditional elastic strip material, and the mass of the carbon fiber material is only about 1/4 of that of the traditional elastic strip; the middle part of the tuning mass buckling elastic strip is provided with a mass embedding hole convenient to adjust, and the function of controlling the tuning mass is achieved by changing the mass of the device in the embedding hole.
3. The novel periodic fastener structure based on hydraulic viscous damping as claimed in claim 1, wherein: the spring washer has proper rigidity, and certain deformation is generated while the function of the washer is well met.
4. The novel periodic fastener structure based on hydraulic viscous damping as claimed in claim 1, wherein: the hydraulic viscous damper is of a rectangular structure, 4 bolt holes are respectively formed in the bottom of the hydraulic viscous damper through feet, the hydraulic viscous damper is fixed on a sleeper through the 4 bolt holes, and the interior of the hydraulic viscous damper is filled with dimethyl silicon oil.
5. The novel periodic fastener structure based on hydraulic viscous damping as claimed in claim 1, wherein: the heightening base plate has great rigidity, and does not deform under the working state of the fastener structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910286003.9A CN109868695B (en) | 2019-04-10 | 2019-04-10 | Novel periodic fastener structure based on hydraulic viscous damping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910286003.9A CN109868695B (en) | 2019-04-10 | 2019-04-10 | Novel periodic fastener structure based on hydraulic viscous damping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109868695A CN109868695A (en) | 2019-06-11 |
| CN109868695B true CN109868695B (en) | 2020-11-06 |
Family
ID=66922406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910286003.9A Active CN109868695B (en) | 2019-04-10 | 2019-04-10 | Novel periodic fastener structure based on hydraulic viscous damping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109868695B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111535082B (en) * | 2020-05-09 | 2021-08-10 | 上海工程技术大学 | Multidirectional hydraulic vibration reduction dynamic vibration absorber structure of steel rail |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08253902A (en) * | 1995-03-16 | 1996-10-01 | Bando Chem Ind Ltd | Resiliently rail-fastening device |
| CA2518176A1 (en) * | 2003-03-05 | 2004-09-16 | Corus Uk Limited | Rail damper |
| CN2782747Y (en) * | 2005-04-27 | 2006-05-24 | 衡水宝力工程橡胶有限公司 | Rail fastener |
| CN101413233A (en) * | 2008-11-11 | 2009-04-22 | 中国船舶重工股份有限公司洛阳分公司 | Method and device for designing shock and vibration absorption type steel rail suspending fastener |
| CN101413232A (en) * | 2008-11-11 | 2009-04-22 | 中国船舶重工股份有限公司洛阳分公司 | Method and device for designing wedge-type mounting floating rail vibration damping noise reduction fastener |
| KR20140000516U (en) * | 2012-08-02 | 2014-01-23 | 주식회사 에이브이티 | Rail fastening apparatus for controlling the uplift force in bridge |
| CN207846099U (en) * | 2018-01-26 | 2018-09-11 | 辛集市国实工贸有限责任公司 | A kind of track switch lead curve rail brace |
| CN109098047A (en) * | 2018-08-31 | 2018-12-28 | 吴江市通宇电梯轨道有限公司 | A kind of fastener device for rail |
-
2019
- 2019-04-10 CN CN201910286003.9A patent/CN109868695B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08253902A (en) * | 1995-03-16 | 1996-10-01 | Bando Chem Ind Ltd | Resiliently rail-fastening device |
| CA2518176A1 (en) * | 2003-03-05 | 2004-09-16 | Corus Uk Limited | Rail damper |
| CN2782747Y (en) * | 2005-04-27 | 2006-05-24 | 衡水宝力工程橡胶有限公司 | Rail fastener |
| CN101413233A (en) * | 2008-11-11 | 2009-04-22 | 中国船舶重工股份有限公司洛阳分公司 | Method and device for designing shock and vibration absorption type steel rail suspending fastener |
| CN101413232A (en) * | 2008-11-11 | 2009-04-22 | 中国船舶重工股份有限公司洛阳分公司 | Method and device for designing wedge-type mounting floating rail vibration damping noise reduction fastener |
| KR20140000516U (en) * | 2012-08-02 | 2014-01-23 | 주식회사 에이브이티 | Rail fastening apparatus for controlling the uplift force in bridge |
| CN207846099U (en) * | 2018-01-26 | 2018-09-11 | 辛集市国实工贸有限责任公司 | A kind of track switch lead curve rail brace |
| CN109098047A (en) * | 2018-08-31 | 2018-12-28 | 吴江市通宇电梯轨道有限公司 | A kind of fastener device for rail |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109868695A (en) | 2019-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105908581B (en) | A kind of composite particles damper for reducing rail vibration noise | |
| CN101849068B (en) | Tunable vibration absorbing device | |
| CN201738195U (en) | Composite damper spring vibration isolator for floating slab tracks in rail transit | |
| CN102713066B (en) | Rail vibration absorber and retention mechanism | |
| CN202530345U (en) | Steel rail absorber | |
| CN105421165B (en) | Steel rail fixing structure for ballastless track and steel rail supporting device of steel rail fixing structure | |
| CN103981779A (en) | Broadband noise-reduction steel rail | |
| CN109868695B (en) | Novel periodic fastener structure based on hydraulic viscous damping | |
| CN110593023A (en) | Vibration and noise reduction device for track floating plate | |
| CN111395846A (en) | Damping-adjustable energy trap device of magnetorheological damper | |
| CN111677143A (en) | Vertical vibration damper for vibration isolation building | |
| CN201495459U (en) | Steel rail damped vibration absorber | |
| CN111749056A (en) | Comprehensive damping vibration-damping noise-reducing device for mass-distributed steel rail | |
| CN212582947U (en) | Vertical vibration damper for vibration isolation building | |
| CN2637214Y (en) | Noise-reducing damper for wheel | |
| CN211947715U (en) | Passive dynamic vibration absorption type floating slab track structure containing negative rigidity | |
| CN207047614U (en) | The steel spring fastener that a kind of rigidity is easily adjusted | |
| CN212376380U (en) | Damping-adjustable energy trap device of magnetorheological damper | |
| CN212247684U (en) | Damping fastener for urban rail transit | |
| CN111778781A (en) | Rigidly-connected broadband composite steel rail dynamic vibration absorption device | |
| CN212688579U (en) | Vibration and noise reduction device for track floating plate | |
| CN113005826B (en) | Design method of full-frequency vibration reduction track structure | |
| CN109267436A (en) | Track vibration-reducing support device | |
| CN209099073U (en) | A kind of fastener system backing plate | |
| CN212801038U (en) | Rigidly connected broadband composite steel rail dynamic vibration absorption device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |