CN115559160A - Locking type compression type vibration damping fastener and mounting method thereof - Google Patents
Locking type compression type vibration damping fastener and mounting method thereof Download PDFInfo
- Publication number
- CN115559160A CN115559160A CN202211378097.0A CN202211378097A CN115559160A CN 115559160 A CN115559160 A CN 115559160A CN 202211378097 A CN202211378097 A CN 202211378097A CN 115559160 A CN115559160 A CN 115559160A
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- base plate
- iron base
- fastener
- connecting sleeve
- upper iron
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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
- E01B9/66—Rail fastenings allowing the adjustment of the position of the rails, so far as not included in the preceding groups
-
- 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
-
- 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
-
- 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
- E01B9/681—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material
- E01B9/683—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair characterised by the material layered or composite
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses a locking compression type vibration damping fastener and an installation method thereof, wherein the vibration damping fastener comprises a sleeper and a plastic sleeve pre-embedded in the sleeper, and an anchoring bolt passes through a distance-adjusting buckle plate, a lower iron base plate and an insulating buffer base plate and is connected with the plastic sleeve; the lower iron base plate is sequentially provided with a middle vibration damping base plate and an upper iron base plate, and the lower iron base plate, the middle vibration damping base plate and the upper iron base plate are connected into a whole through connecting sleeves; the steel rail is limited and buckled on the upper iron base plate through the lower rail base plate, the insulating gauge block, the T-shaped bolt, the nut and the elastic strip. The invention provides a vibration damping fastener with low vertical rigidity and high transverse rigidity, the fastener has low installation height, and a bottom plate anchor bolt can be used with a common fastener of a circuit. The invention can effectively reduce the vibration and noise of the steel rail, and simultaneously, the pull-out resistance of the fastener can be increased, the transverse stability is good, and the installation and the maintenance of the fastener are convenient by the form of self-locking the upper iron base plate, the middle vibration-damping base plate and the lower iron base plate into a whole.
Description
Technical Field
The invention relates to a locking compression type vibration damping fastener and an installation method thereof.
Background
The rail transit brings great convenience to people going out, but the problems of noise and vibration generated by the rail transit also bring great troubles to the lives of surrounding residents. Therefore, vibration reduction and noise reduction also become the problem which needs to be solved urgently in the process of rail transit construction. Adopt damping fastener one of the effective measure of track vibration and noise is alleviated, and damping fastener is all adopted in the district that passes through residential area or population intensive area in many circuits at present.
The vibration-damping fastener needs to have lower vertical rigidity and enough elastic vibration absorption to achieve the purposes of vibration damping and noise reduction, and meanwhile, the fastener needs to have enough transverse rigidity to prevent the dynamic gauge of the steel rail from increasing when the steel rail is subjected to wheel rail force.
The double-deck damping fastener that uses commonly in the market at present cushions the wheel rail vibration through two-layer elastic backing plate, realizes orbital damping, and most damping fastener can't satisfy lower vertical rigidity and higher transverse rigidity simultaneously. Meanwhile, most of vibration reduction fasteners are provided with two layers of base plates, so that the mounting height of the fasteners is higher, the length of an anchoring bolt for fastening the base plates is longer than that of a common fastener, the bolt bears larger bending moment, and is easy to deform or break, and meanwhile, the bolt for the vibration reduction fasteners and the common bolt cannot be used universally, so that inconvenience is brought to the mounting and maintenance of the fasteners.
Disclosure of Invention
In order to overcome the above disadvantages of the prior art, the present invention provides a locking compression type damping fastener and a method for installing the same.
The technical scheme adopted by the invention for solving the technical problem is as follows: a locking compression type vibration damping fastener comprises a sleeper and a plastic sleeve pre-embedded in the sleeper, wherein an anchoring bolt passes through a distance-adjusting buckle plate, a lower iron base plate and an insulating buffer base plate and is connected with the plastic sleeve; the lower iron base plate is sequentially provided with a middle vibration reduction base plate and an upper iron base plate, and the lower iron base plate, the middle vibration reduction base plate and the upper iron base plate are connected into a whole through a connecting sleeve; the steel rail is limited and buckled on the upper iron base plate through the lower rail base plate, the insulating gauge block, the T-shaped bolt, the nut and the elastic strip.
The invention also provides an installation method of the locking compression type vibration damping fastener, which comprises the following steps:
step one, pre-burying a plastic sleeve in a sleeper, and paving an insulating buffer base plate on the sleeper;
step two, mounting a shock absorber assembly:
placing an upper iron base plate and a middle damping base plate on a lower iron base plate through a limiting upright post, aligning a gap between locking seats on a connecting sleeve with a locking clamp of the limiting upright post of the lower iron base plate, and then enabling a limiting upright post to penetrate through the connecting sleeve to enable the bottom surface of a flange table of the connecting sleeve to be in contact with the top surface of the upper iron base plate; a vertical downward force is applied to the upper iron base plate to enable the middle vibration damping base plate to be in a compression state, then the connecting sleeve rotates by 90 degrees and unloads the force loaded on the upper iron base plate, the middle lower part of the step surface of the lock seat of the connecting sleeve is contacted with the bottom surface of the lock clamp of the limiting upright post, the bottom surface of the flange table of the connecting sleeve is contacted with the top surface of the upper iron base plate, the inner wall of the lock seat of the connecting sleeve is attached to the outer wall of the limiting upright post, the outer wall of the connecting sleeve is attached to the inner wall of the installation through hole of the upper iron base plate, and thus the upper iron base plate, the middle vibration damping base plate and the lower iron base plate are connected into a whole through the connecting sleeve;
placing the shock absorber assembly on an insulating buffer base plate, and fixing a lower iron base plate and the insulating buffer base plate on a sleeper by adopting an anchor bolt, a flat washer, a spring washer and a distance-adjusting buckle plate;
and fourthly, laying a lower rail base plate on an upper iron base plate of the shock absorber assembly, laying the steel rail on the lower rail base plate, laying an insulating gauge block between the steel rail and an iron seat of the upper iron base plate, and fixing the steel rail on the upper iron base plate by adopting elastic strips, T-shaped bolts and nuts.
Compared with the prior art, the invention has the following positive effects:
the invention provides a vibration damping fastener with low vertical rigidity and high transverse rigidity, the fastener has low installation height, and a bottom plate anchor bolt can be used with a common fastener of a circuit. The invention can effectively reduce the vibration and noise of the steel rail, and simultaneously, the pull-out resistance of the fastener can be increased, the transverse stability is good, and the installation and the maintenance of the fastener are convenient by the form of self-locking the upper iron base plate, the middle vibration-damping base plate and the lower iron base plate into a whole. The method has the following specific advantages:
(1) The fastener system can realize lower vertical rigidity through the rail lower cushion plate and the middle damping cushion plate, and has good damping effect; the lower iron base plate of the fastener system is anchored on the sleeper through an anchoring bolt, the upper iron base plate and the lower iron base plate are horizontally limited through a connecting sleeve, and the fastener system has high transverse rigidity.
(2) The upper iron base plate, the middle vibration reduction base plate and the lower iron base plate are combined into a whole through the connecting sleeve to form the vibration reducer, and the vibration reducer can be assembled and disassembled, so that the construction and installation on site are facilitated.
(3) The parts of the fastener system, such as the anchor bolt, the rail lower base plate, the T-shaped bolt, the elastic strip, the insulating gauge block and the like, are consistent with the common fastener of the line, have stronger universality and are beneficial to field installation and maintenance.
(4) The upper iron base plate, the middle vibration reduction base plate and the lower iron base plate are locked into a whole through the connecting sleeve, so that the fastener system has lower static rigidity and higher transverse rigidity.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a partial cross-sectional view of the general structure of the present invention;
FIG. 2 is a top view of the overall structure of the present invention;
FIG. 3 is a partial cross-sectional view of the damper assembly;
FIG. 4 is a schematic view of a shock absorber assembly;
FIG. 5 is a schematic view of the lower iron backing plate 14;
FIG. 6 is a schematic view of the upper iron backing plate 12;
fig. 7 is a schematic view of an intermediate vibration damping shim plate 13 adopting a groove structure;
fig. 8 is a schematic view of an intermediate vibration-damping shim plate 13 adopting a circular boss structure;
fig. 9 is a schematic view of the connecting sleeve 11;
FIG. 10 is a schematic view of a variable-pitch buckle 10;
FIG. 11 is a schematic view of the ZX-2 type fastener assembly stiffness calculation;
FIG. 12 is a schematic view of the calculation of the assembly stiffness of a locking compression type vibration damping fastener;
the reference numbers in the figures include: 1-steel rail, 2-T-shaped bolt, 3-nut, 4-elastic strip, 5-insulating gauge block, 6-rail lower backing plate, 7-anchoring bolt, 8-flat washer, 9-spring washer, 10-distance adjusting buckle (round hole 101, tooth-shaped 102), 11-connecting sleeve (annular flange table 111, flat surface 1111, lock seat 112, step surface 1121, chamfer 1122), 12-upper iron backing plate (installation through hole 121, iron seat 122), 13-middle damping backing plate (column through hole 131, circular concave table 132), 14-lower iron backing plate (slotted hole 141, tooth-shaped 142, limiting upright column 143, chamfer 1431, lock 1432), 15-insulating buffer backing plate, 16-plastic sleeve and 17-sleeper.
Detailed Description
As shown in fig. 1 and 2, an anchor bolt 7 passes through a flat washer 8, a spring washer 9 and a pitch buckle 10 to fix a lower iron pad 14 and an insulating cushion pad 15 to a sleeper 17. The plastic sleeve 16 is embedded in the sleeper 17, and the anchor bolt 7 is connected with the plastic sleeve 16. And a lower rail backing plate 6 is laid on the upper iron backing plate 12, the steel rail 1 is laid on the lower rail backing plate 6, and the insulating gauge block 5 is laid between the steel rail 1 and an iron seat 122 of the upper iron backing plate. The steel rail 1 is fixed on an upper iron backing plate 12 through an elastic strip 4, a T-shaped bolt 2 and a nut 3.
The long round hole 141 is formed in the lower iron base plate 14 (the structure is shown in fig. 5) and can be used for adjusting the rail gauge of a steel rail, the tooth form 142 is arranged around the long round hole, the round hole 101 is formed in the distance adjusting buckle plate 10 (the structure is shown in fig. 10), the tooth form 102 is arranged on the periphery of the round hole, the tooth form 102 on the distance adjusting buckle plate can be meshed with the tooth form 142 on the lower iron base plate, the rail gauge adjusting function of the fastener system can be achieved through the matching of the distance adjusting buckle plate and the lower iron base plate, and the transverse load resisting capacity of the fastener system can be improved through the arrangement of the tooth form.
The lower iron backing plate 14 (the structure is shown in fig. 5) is provided with a limiting upright column 143, the top end of the limiting upright column 143 is provided with a lock catch 1432 protruding outwards, and two ends below the lock catch are provided with chamfers 1431; the middle damping cushion plate 13 (the structure is shown in fig. 7 and 8) is made of rubber or polyurethane elastic material, the upper surface and the lower surface of the middle damping cushion plate 13 are made of groove or circular boss structures for adjusting and controlling the rigidity of the middle damping cushion plate 13, the middle damping cushion plate 13 is provided with a column through hole 131, the column through hole 13 just can penetrate through a limit upright column 143 of the lower iron cushion plate, meanwhile, the middle damping cushion plate 13 is provided with a circular concave platform 132 which is concentric with the column through hole 131, and the circular concave platform 132 just can allow the excircle of the connecting sleeve 11 to pass through; the upper iron backing plate 12 (the structure is shown in fig. 6) is provided with two mounting through holes 121, and the mounting through holes 121 can allow the outer circle of the connecting sleeve 11 to pass through; the connecting sleeve 11 (the structure is shown in fig. 9) is provided with an installation through hole, the inner wall of the installation through hole is provided with two circular ring-shaped lock seats 112, a gap between the two lock seats 112 can be used for a lock clamp 1432 of the lower iron base plate to pass through, the top surface of the lock seat 112 is provided with a step surface 1121 with two high ends and a low middle part, the width of the step surface with the lower middle part is matched with the width of the lock clamp 1432, and the end part of the top surface of the same lock seat 112 is provided with a chamfer 1122, so that the connecting sleeve is convenient to rotate during installation. The top surface of the connecting sleeve is provided with an annular flange platform 111, and the side surface of the flange platform can be provided with a plurality of symmetrical flat surfaces 1111, so that the connecting sleeve can rotate conveniently during installation.
The lower iron backing plate 14, the middle damping backing plate 13, the upper iron backing plate 12 and the connecting sleeve 11 can be combined into a whole to form the damper, as shown in fig. 3 and 4. The installation method comprises the following steps: the middle damping cushion plate 13 is placed on the lower iron cushion plate 14, the limiting upright posts 143 of the lower iron cushion plate 14 penetrate through the post penetrating through holes 131 of the middle damping cushion plate 13 to prevent the middle damping cushion plate 13 from moving in the horizontal direction, the upper iron cushion plate 12 is placed on the middle damping cushion plate 13, and the installation through holes 121 of the upper iron cushion plate also penetrate through the limiting upright posts 143. The gap between the locking seats 112 on the connecting sleeve 11 is aligned with the locking clip 1432 of the limiting upright column 143 of the lower iron backing plate 14, and then the limiting upright column 143 passes through the connecting sleeve 11, so that the bottom surface of the flange platform 111 of the connecting sleeve 11 contacts with the top surface of the upper iron backing plate 12. A vertical downward force is applied to the upper iron backing plate 12 to enable the middle damping backing plate 13 to be in a compressed state, and then the connecting sleeve 11 is rotated by 90 degrees to unload the force loaded on the upper iron backing plate 12. At this time, the middle lower part of the step surface 1121 of the lock seat 112 of the connecting sleeve 11 is contacted with the bottom surface of the lock catch 1432 of the limit column 143, the bottom surface of the connecting sleeve flange table 111 is contacted with the top surface of the upper iron backing plate 12, the inner wall of the connecting sleeve lock seat 112 is attached to the outer wall of the limit column 143, and the outer wall of the connecting sleeve 11 is attached to the inner wall of the upper iron backing plate installation through hole 121, so that the upper iron backing plate 12, the middle vibration attenuation backing plate 13 and the lower iron backing plate 14 are connected into a whole through the connecting sleeve 11.
When the fastener system works, the upper iron base plate 12 and the lower iron base plate 14 cannot move mutually in the horizontal direction due to the limit of the connecting sleeve 11, so that the transverse rigidity of the fastener system is increased. The middle damping pad 13 can not move in the horizontal direction due to the matching with the limit column 143, and can be compressed and deformed in the vertical direction when being subjected to vertical load, so that the fastener system has lower vertical rigidity and larger transverse rigidity.
The following is a mechanical analysis of the fastener of the invention:
1) Vertical stiffness calculation
The common urban rail fastener mainly adopts a split fastener with an iron base plate to carry out double-layer vibration reduction under a rail and a plate. Taking a common ZX-2 type fastener as an example, the assembly rigidity is calculated, and the rigidity of the pad plate under the fastener rail is designed as follows: (40-50) kN/mm; the rigidity of the under-board backing plate is designed as follows: (120-150) kN/mm. A graphical representation of the calculated assembled stiffness of the fastener system is shown in FIG. 11, where K is P1 To the rigidity of the under-rail pad, K P2 Assembling stiffness for underfloor pads, K C For the unloading rigidity of the buckling end of the elastic strip, the elastic strip adopts a national iron II type elastic strip, and the unloading rigidity of the buckling end is about 1.5kN/m and K b For the rigidity unloading at the anchoring bolt, if the anchoring bolt is just fastened to the spring washer to be compressed during installation, K b The unload stiffness of the spring washer was tested to be about 1kN/mm. The package stiffness of a ZX-2 type fastener can then be calculated as follows:
the under-rail backing plate and the middle damping backing plate used by the invention are made of elastic materials such as rubber or polyurethane, and the rigidity of the under-rail backing plate is designed as follows: (40-50) kN/mm; the rigidity of the middle damping base plate is designed as follows: (20-25) kN/mm. A graphical representation of the calculated assembled stiffness of the fastener system is shown in FIG. 12, where K is P1 Static stiffness of the under-track pad, K P2 Assembling stiffness for intermediate damping shim plates, K C In order to achieve the unloading rigidity of the buckling end of the elastic strip, the national iron II type elastic strip is selected, and the unloading rigidity is about 1.5kN/mm through tests. Assembly stiffness K of a fastener system a Can be calculated as follows:
the assembly rigidity of the designed locking compression type vibration damping fastener is smaller than that of a ZX-2 type fastener, and compared with a common double-layer vibration damping fastener, the locking compression type vibration damping fastener has better vibration damping performance.
2) Force analysis
In order to ensure that the fastener system has lower vertical rigidity and higher transverse rigidity at the same time and prevent the dynamic gauge from increasing when the steel rail is subjected to wheel rail force, the connecting sleeve is adopted for limiting, and the upper iron base plate and the lower iron base plate are prevented from horizontally moving. When a train passes through, the wheel rail force borne by the fastener system is transmitted to the sleeper through the upper iron base plate, the connecting sleeve and the lower iron base plate in sequence.
The force condition of the shock absorber is analyzed as follows:
and (3) establishing a three-dimensional model of the shock absorber of the fastener system by using three-dimensional modeling software Creo, importing the three-dimensional model into finite element analysis software ANSYS for structural statics analysis, and checking the strength safety. The vibration absorber mainly comprises an upper iron base plate, a lower iron base plate, a middle vibration absorbing base plate and a connecting sleeve, and the material and performance parameters of all parts are shown in table 1.
TABLE 1 vibration damper part parameter List
The connecting sleeve is in frictional contact with the upper iron base plate and the lower iron base plate, the rubber base plate is in frictional contact with the upper iron base plate and the lower iron base plate, and the friction coefficient is 0.3. The friction algorithm adopts an augmented Lagrange method. The lower iron base plate is used for fixing and constraining the bottom surface and the bolt mounting hole and simulating the mounting state of the lower iron base plate. Load according to TB/T3396.4-2015 high speed railway fastener system test method part 4: the assembling fatigue performance test confirms that a vertical load of 62.92kN is applied to the upper iron base plate, and a horizontal load of 30.67kN is applied to the contact surface of the upper iron base plate and the insulating gauge block.
The grid division adopts a high-order self-adaptive division method, namely, the grid is a tetrahedral and hexahedral mixed grid, and grid units adopt solid186 units and second-order units, and 970911 units are calculated in total.
The statics analysis result of the shock absorber shows that the maximum stress position of the upper iron base plate is the contact position of the upper iron base plate and the insulating track gauge block, the maximum stress value is 142.29MPa, the maximum stress position of the lower iron base plate is the connecting position of the upright post and the base plate, the maximum stress value is 60.43MPa, and the maximum stress value is smaller than the strength limit 450MPa of a material QT 450-10. The maximum stress position of the connecting sleeve is the contact position of the interior of the stress side connecting sleeve consistent with the load direction and the lower iron base plate column, the maximum stress value is 32.77MPa and is less than the strength limit 144MPa of the glass fiber reinforced polyamide 66.
Through the analysis, all parts of the shock absorber can bear the acting force of the wheel rail. The fastener system has lower vertical rigidity and stronger track gauge holding capacity.
Claims (10)
1. The utility model provides a locking compression type damping fastener which characterized in that: the sleeper-mounted anchor bolt-free sleeper comprises a sleeper and a plastic sleeve embedded in the sleeper, wherein the anchor bolt penetrates through a distance-adjusting buckle plate, a lower iron base plate and an insulating buffer base plate and is connected with the plastic sleeve; the lower iron base plate is sequentially provided with a middle vibration damping base plate and an upper iron base plate, and the lower iron base plate, the middle vibration damping base plate and the upper iron base plate are connected into a whole through connecting sleeves; the steel rail is limited and buckled on the upper iron base plate through the lower rail base plate, the insulating gauge block, the T-shaped bolt, the nut and the elastic strip.
2. The fastener of claim 1, wherein: a limiting upright post is arranged on the lower iron base plate, and a lock clamp protruding outwards is arranged at the top end of the limiting upright post; a column penetrating through hole for the limiting upright column to penetrate through and a circular concave platform concentric with the column penetrating through hole for the connecting sleeve to penetrate through are arranged on the middle vibration damping base plate; two mounting through holes matched with the excircle of the connecting sleeve are formed in the upper iron base plate; the connecting sleeve is provided with an installation through hole corresponding to the limiting upright post, the inner wall of the installation through hole is provided with two lock seats, and a gap for the lock of the lower iron base plate to pass through is arranged between the two lock seats.
3. A fastener of the type having the damping means of claim 2, wherein: chamfers are arranged at two ends of the lower surface of the lock clip.
4. A fastener of the type having the damping means of claim 2, wherein: the top surface of the lock seat is set to be a step surface with high ends and low middle, and the width of the step surface with lower middle is matched with the width of the lock clamp.
5. A locking compression type vibration damping fastener as claimed in claim 2, wherein: the end part of the top surface of the lock seat is provided with a chamfer.
6. The fastener of claim 1, wherein: the top surface of the connecting sleeve is provided with an annular flange table.
7. The fastener of claim 6, wherein: the side surface of the flange table is provided with symmetrical straight surfaces.
8. The fastener of claim 1, wherein: the upper surface and the lower surface of the middle vibration-damping base plate adopt a groove or circular boss structure.
9. The fastener of claim 1, wherein: the lower iron base plate is provided with a long round hole, tooth shapes are arranged around the long round hole, a round hole is arranged on the distance-adjusting buckle plate, and the tooth shapes are arranged on the periphery of the round hole.
10. A mounting method of a locking compression type vibration damping fastener is characterized in that: the method comprises the following steps:
step one, pre-burying a plastic sleeve in a sleeper, and paving an insulating buffer base plate on the sleeper;
step two, mounting a shock absorber assembly:
placing an upper iron base plate and a middle damping base plate on a lower iron base plate through a limiting upright post, aligning a gap between locking seats on a connecting sleeve with a locking clamp of the limiting upright post of the lower iron base plate, and then enabling a limiting upright post to penetrate through the connecting sleeve to enable the bottom surface of a flange table of the connecting sleeve to be in contact with the top surface of the upper iron base plate; a vertical downward force is applied to the upper iron base plate to enable the middle vibration damping base plate to be in a compression state, then the connecting sleeve rotates by 90 degrees and unloads the force loaded on the upper iron base plate, the middle lower part of the step surface of the lock seat of the connecting sleeve is contacted with the bottom surface of the lock clamp of the limiting upright post, the bottom surface of the flange table of the connecting sleeve is contacted with the top surface of the upper iron base plate, the inner wall of the lock seat of the connecting sleeve is attached to the outer wall of the limiting upright post, the outer wall of the connecting sleeve is attached to the inner wall of the installation through hole of the upper iron base plate, and thus the upper iron base plate, the middle vibration damping base plate and the lower iron base plate are connected into a whole through the connecting sleeve;
placing the shock absorber assembly on an insulating buffer base plate, and fixing a lower iron base plate and the insulating buffer base plate on a sleeper by adopting an anchor bolt, a flat washer, a spring washer and a distance-adjusting buckle plate;
and fourthly, laying a lower rail base plate on an upper iron base plate of the shock absorber assembly, laying the steel rail on the lower rail base plate, laying an insulating gauge block between the steel rail and an iron seat of the upper iron base plate, and fixing the steel rail on the upper iron base plate by adopting elastic strips, T-shaped bolts and nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211378097.0A CN115559160A (en) | 2022-11-04 | 2022-11-04 | Locking type compression type vibration damping fastener and mounting method thereof |
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| CN202211378097.0A CN115559160A (en) | 2022-11-04 | 2022-11-04 | Locking type compression type vibration damping fastener and mounting method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115787369A (en) * | 2023-02-09 | 2023-03-14 | 西南交通大学 | Dry friction energy-consumption type vibration-damping noise-reducing fastener and use method thereof |
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- 2022-11-04 CN CN202211378097.0A patent/CN115559160A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115787369A (en) * | 2023-02-09 | 2023-03-14 | 西南交通大学 | Dry friction energy-consumption type vibration-damping noise-reducing fastener and use method thereof |
| CN115787369B (en) * | 2023-02-09 | 2023-04-11 | 西南交通大学 | Dry friction energy-consumption type vibration-damping noise-reducing fastener and use method thereof |
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