CN111118973A - General type urban railway fastener - Google Patents
General type urban railway fastener Download PDFInfo
- Publication number
- CN111118973A CN111118973A CN201911379348.5A CN201911379348A CN111118973A CN 111118973 A CN111118973 A CN 111118973A CN 201911379348 A CN201911379348 A CN 201911379348A CN 111118973 A CN111118973 A CN 111118973A
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- Prior art keywords
- base plate
- iron base
- urban railway
- cushion layer
- elastic cushion
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 154
- 229910052742 iron Inorganic materials 0.000 claims abstract description 77
- 239000004677 Nylon Substances 0.000 claims abstract description 30
- 229920001778 nylon Polymers 0.000 claims abstract description 30
- 238000013016 damping Methods 0.000 claims abstract description 24
- 238000009413 insulation Methods 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims abstract description 12
- 238000010168 coupling process Methods 0.000 claims abstract description 12
- 238000005859 coupling reaction Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 23
- 239000010959 steel Substances 0.000 claims description 23
- 230000009467 reduction Effects 0.000 claims description 11
- 238000004873 anchoring Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 47
- 238000010276 construction Methods 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 5
- 229920001007 Nylon 4 Polymers 0.000 description 3
- 230000001808 coupling effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 101100495256 Caenorhabditis elegans mat-3 gene Proteins 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/68—Pads or the like, e.g. of wood, rubber, placed under the rail, tie-plate, or chair
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a universal urban railway fastener, which is characterized in that: the insulating coupling base plate is directly laid on the base, and a lower iron base plate, an elastic cushion layer, an upper iron base plate, a nylon insulating cover, a flat cushion block and a heavy spring washer are sequentially laid on the insulating coupling base plate; the lower iron base plate is provided with a convex upright post, and the nylon insulation cover compresses the elastic cushion layer through the upper iron base plate until the lower surface of the nylon insulation cover is flush with the top surface of the upright post; the rigidity of the elastic cushion layer is adjustable, and three elastic cushion layers with different rigidities are respectively adopted in a non-small-radius curve section in a general road section, a non-small-radius curve section in a vibration damping road section and a small-radius curve section in the general road section and the vibration damping road section. The invention adopts a unified structure to meet the performance requirements of common fasteners and vibration-damping fasteners of urban railways, and has the advantages of simplicity and convenient management in the installation and laying process.
Description
Technical Field
The invention belongs to the technical field of railway tracks, and particularly relates to a universal urban railway fastener.
Background
The urban railway is a novel rail transit system between the inter-city railway and the urban rail transit, can provide rapid, large-capacity and public transportation traffic service between a central city and a new city, and can be connected with national trunk railways to realize interconnection. The urban railway is different from urban subways and light rails in that the urban railway has the characteristics of large station distance, heavy train weight, high-speed railway motor train unit vehicles are often adopted, the design speed is high and can reach 140-160 km/h, and the speed per hour requirement of about 80km/h of the urban subways and the light rails is far exceeded. According to the construction planning analysis of the passenger railways in China, the future national passenger transportation lines are divided into high-speed railways, intercity railways, subways and light rails of urban railway and urban rail transit, under the condition that a national eight-vertical eight-horizontal high-speed railway network is basically formed, the next step of construction is to focus on the intercity railways and the urban railway, and the urban railway is an upgrade to the existing intercity railways, has the characteristics of high speed, high capacity and public transportation provided between a central city and a new city, and is in the important position of the future passenger railway development.
Due to the construction characteristics of urban railways, the laid track structure of the urban railways has the requirements higher than those of subway and light rail tracks, for example, the requirement of a line on a common and high-level vibration damping road section is considered, the operation deformation of the line is small, the smoothness is high, and the like, the rail fastener system which is an important component of the track structure is required to have good service performance, and the fastener system is newly developed under the condition of considering large-axle-weight vehicles, high speed and vibration damping.
The fastener system is a device for fixing a steel rail in rail transit, is an important component of a rail structure, and has the functions of connecting the steel rail and an underfooting foundation into a whole, transmitting the force borne by the steel rail to the underfooting foundation, keeping the correct position of the steel rail, preventing the steel rail from generating longitudinal and transverse displacement, providing certain rail elasticity and playing a role in vibration and noise reduction.
Although the existing urban railway fasteners in China have fasteners for general road sections and fasteners for vibration reduction road sections, the existing technology has the following defects, and is not beneficial to popularization in use:
1. the heights of the two road sections are not uniform, the height of the general road section fastener is about 20mm smaller than that of the damping road section fastener, a special height-adjustable fastener must be designed for gradual change downhill construction during laying, and construction complexity is high. Because the fastener for the damping road section generally adopts a double-layer damping structure, the height of the fastener is about 20mm higher than that of the fastener for the general road section adopting a single-layer base plate.
2. If the general fasteners for the road sections are transformed into the fasteners for the vibration reduction road sections, the roadbed needs to be remade, the construction difficulty is high, and the transformation cost is high.
3. The vibration-damping fastener is different from the fastener parts used in common road sections, and the universality of laying construction is influenced.
Disclosure of Invention
Aiming at least one of the defects or improvement requirements in the prior art, the invention provides the fastener which is universal for the whole line of the urban railway, meets the laying requirements of common and vibration-damping road sections, has the characteristics of consistent structure, simple construction and maintenance and moderate cost, and has the value of large-scale popularization.
In order to achieve the above object, according to one aspect of the present invention, there is provided a universal urban railway fastener, wherein an insulating coupling pad is directly laid on a base, a lower iron pad, an elastic cushion, an upper iron pad, a nylon insulating cover, a flat pad, and a heavy spring washer are sequentially laid on the insulating coupling pad, and an anchor bolt sequentially penetrates through the insulating coupling pad from top to bottom and is connected to the base in an anchoring manner; fixing a steel rail on the upper iron base plate;
the lower iron base plate is provided with a convex upright post, and the height of the upright post is smaller than the sum of the heights of the elastic cushion layer and the upper iron base plate which are penetrated through the upright post in a natural state; when the anchor bolt is installed and pre-tightened, the nylon insulating cover compresses the elastic cushion layer through the upper iron base plate until the lower surface of the nylon insulating cover is flush with the top surface of the upright post;
the rigidity of the elastic cushion layer is adjustable, and the elastic cushion layer with the first rigidity is adopted in a non-small-radius curve section in a general road section; in a non-small-radius curve section in the vibration damping road section, an elastic cushion layer with second rigidity is adopted; in the small-radius curve sections in the general road section and the vibration reduction road section, an elastic cushion layer with third rigidity is adopted; wherein the second stiffness < the first stiffness < the third stiffness.
Preferably, the lower part of the nylon insulation cover is provided with a convex edge, and the edge is inserted into a gap between the upright columns on the upper-layer iron base plate and the lower-layer iron base plate to lock the upper and lower iron base plates in the horizontal direction.
Preferably, the inner part of the lower protruding edge of the nylon insulation cover and the upright post on the lower iron backing plate form a matching shape for preventing relative rotation.
Preferably, the cross sections of the inner part of the protruding edge at the lower part of the nylon insulation cover and the upright column on the lower iron base plate are oblate.
Preferably, the upper part of the nylon insulation cover and the lower part of the flat cushion block form a matching shape for preventing relative rotation.
Preferably, the upper surface of the nylon insulation cover is provided with a groove, and matched with the groove, the lower surface of the flat cushion block is provided with a convex boss.
Preferably, a lower rail base plate is placed in a rail bearing groove of the upper iron base plate, the steel rail is laid on the lower rail base plate, and an insulating gauge block is arranged between the rail bearing groove and the steel rail.
Preferably, the upper iron base plate is provided with an elastic strip mounting seat, the bottom surface of the elastic strip mounting seat is provided with a T-shaped bolt anti-rotation frustum, and a T-shaped bolt is arranged in the T-shaped bolt anti-rotation frustum in an inverted mode.
Preferably, the T-shaped bolt sequentially penetrates through the elastic strip mounting seat, the elastic strip, the flat washer and the nut, the elastic strip mounted between the upper iron base plate and the insulating gauge block is pressed tightly after the nut is screwed down, and the steel rail is fixed on the lower base plate of the rail.
Preferably, in the section with low resistance of the continuous beam bridge surface, the rail lower backing plate and the small buckling pressure elastic strip with lower friction coefficient than those of other sections are used.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, compared with the prior art, the above technical solution conceived by the present invention has the following beneficial effects:
1. the general urban railway fastener is general in all urban railways, meets the laying requirements of common and vibration-damping road sections, has the characteristics of consistent structure, simplicity in construction and maintenance and moderate cost, and has a value of large-scale popularization.
2. According to the universal urban railway fastener, the elastic cushion layer is arranged below the iron base plate of the fastener for laying the steel rail, the coupling base plate is arranged below the steel rail, and the series connection structure is adopted to limit the height of the elastic cushion layer below the iron base plate, so that the elasticity of the elastic cushion layer below the iron base plate can be fully exerted. The flexible cushion layer is adopted when the vibration reduction road section is paved, the medium hardness cushion layer is adopted when the general road section is paved, and the high hardness cushion layer is adopted when the small radius curve line section is paved. The elastic index of the elastic cushion layer under the iron base plate can be adjusted to meet the general laying requirement of the urban railway on the whole line. When a small-radius curve line section is laid, the stress of the track is large, the deformation of the fastener is required to be small, and the fastener has higher system rigidity. The system rigidity refers to the size of a vertical load required when the fastener sinks in a unit, the system elasticity of the fastener is reflected, and the larger the index is, the more rigid the system is.
3. The universal urban railway fastener meets the performance requirements of the common urban railway fasteners and the damping fasteners by adopting a unified structure, and has the advantages of simplicity and convenience in management in the installation and laying process.
4. According to the universal urban railway fastener, the intermediate elastic cushion layer of the fastener is slightly pre-pressed by the serial connection type fixing structure when in use, so that the elasticity of the intermediate elastic cushion layer can be fully exerted for vibration reduction, and the vibration reduction effect is good.
5. The universal urban railway fastener adopts the series connection type fixing structure, so that the transverse clearance between each part of the fastener is small, the transverse force resistance of the fastener is large, the stability is high, and the use safety is high.
6. The universal urban railway fastener disclosed by the invention does not need a special tool for dismounting, and facilitates the later fastener maintenance and repair work.
7. The universal urban railway fastener comprises a large round hole and an elastic strip mounting seat which are used for mounting and are arranged on an upper iron base plate, and a T-shaped bolt anti-rotation frustum is arranged on the bottom surface of the mounting seat; an oblate upright post is arranged on the lower iron base plate; a series connection type fixing structure is adopted; the middle elastic cushion layer is only pre-pressed for 0.5-1 mm when in use.
8. The universal urban railway fastener adopts staggered interfaces for installation, and is compatible with most urban rail transit installation positions.
9. The universal urban railway fastener can adopt elastic strips commonly used by urban rail transit.
10. According to the universal urban railway fastener, the fastener uniformly adopts the rail lower base plate, the rigidity of the rail lower base plate is 50-70 kN/mm, and the coupling effect is realized between the steel rail and the upper iron base plate.
11. According to the universal urban railway fastener, the rigidity of the elastic cushion layer under the plate is adjustable, and when the universal urban railway fastener is applied to a general road section, the elastic cushion layer under the plate with the medium rigidity of 50-70 kN/mm is adopted, so that the system has the system rigidity of about 40 kN/mm; when the damping elastic cushion is applied to a damping road section, a high-elasticity under-plate elastic cushion layer with the rigidity of 20-30 kN/mm is adopted, and the system rigidity of 12-20 kN/mm is ensured; when the elastic cushion is applied to a small-radius curve section, the elastic cushion layer with the rigidity of 90-120 kN/mm under the low elastic plate is adopted, and the system rigidity of 50-70 kN/mm is guaranteed. Only the continuous beam bridge floor small-resistance section needing to reduce the longitudinal resistance of the fastener is replaced by the low-resistance base plate and the small-fastening-pressure elastic strip under the rail with the small friction coefficient.
Drawings
FIG. 1 is a schematic diagram of a universal urban railway fastener according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a universal type urban railway fastener in accordance with an embodiment of the present invention;
FIG. 3 is an exploded view of a universal urban railway fastener in accordance with an embodiment of the present invention;
FIG. 4 is an exploded view of a universal urban railway fastener in accordance with an embodiment of the present invention;
FIG. 5 is a schematic view of a nylon insulation cover of the universal urban railway fastener according to an embodiment of the present invention;
FIG. 6 is a schematic view of a flat pad structure of a universal urban railway fastener in accordance with an embodiment of the present invention;
FIG. 7 is a schematic view of an upper iron backing plate of a universal type urban railway fastener in accordance with an embodiment of the present invention;
FIG. 8 is a schematic view of the lower iron backing plate of the universal urban railway fastener in accordance with an embodiment of the present invention;
FIG. 9 is a schematic view showing a series connection structure of upper and lower iron plates and an elastic cushion layer of the universal urban railway fastener according to the embodiment of the present invention;
fig. 10 is a schematic view showing the installation of the tandem structure of the upper and lower iron plates and the elastic cushion layer of the universal type urban railway fastener according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to specific embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1-10, the present invention provides a general type urban railway fastener, a nylon sleeve 15 is pre-embedded in a base, an insulating coupling pad 8 is directly laid on the base, a lower iron pad 7, an elastic pad 6, an upper iron pad 5, a nylon insulating cover 4, a flat pad 3, and a heavy spring washer 2 are sequentially laid on the insulating coupling pad 8, and an anchor bolt 1 sequentially penetrates from top to bottom and is connected to the base in an anchoring manner; the steel rail 10 is fixed on the upper iron backing plate 5.
In fig. 1 and 8, a protruding upright column 71 is arranged on the lower iron backing plate 7, and in a natural state, the height of the upright column 71 is slightly less than the sum of the heights of the elastic cushion layer 6 and the upper iron backing plate 5 which penetrate through the upright column; when 1 installation pretension of anchor bolt, anchor bolt 1 passes heavy spring washer 2 downwards, bolt hole on flat bolster 3 and the insulating lid of nylon 4 runs through lower floor's iron backing plate 7 screw in and fixes on the base in nylon sleeve 15, the insulating lid of nylon 4 is through the lower surface and the stand 71 top surface parallel and level of the insulating lid of upper iron backing plate 5 compression elastic cushion 6 to nylon 4, the high space that forms by lower floor's iron backing plate and the insulating lid of nylon this moment can be at fixed elastic cushion of direction of height and upper iron backing plate, and only form 0.5 ~ 1 mm's compression to the elastic cushion, guarantee under the condition that the elastic cushion can exert its elasticity performance completely, fully with on, the contact of lower floor's iron backing plate.
As shown in fig. 4-5, the lower part of the nylon insulation cover 4 has a protruding edge 41, the edge 41 is inserted into the gap between the upper iron backing plate 5 and the upright column 71 on the lower iron backing plate 7, and the protruding edge at the lower part of the nylon insulation cover has the same thickness as the gap between the upper iron backing plate and the upright column on the lower iron backing plate, so that the upper iron backing plate and the lower iron backing plate can be locked in the horizontal direction, and the displacement in the plane direction is small when the upper iron backing plate is horizontally stressed.
The inner part of the lower protruding edge 41 of the nylon insulation cover 4 and the upright post 71 on the lower iron backing plate 7 form a matching shape for preventing relative rotation. Preferably, the cross sections of the inside of the lower protruding edge 41 of the nylon insulation cover 4 and the upright 71 on the lower iron backing plate 7 are oblate.
As shown in fig. 4 to 6, the upper portion of the nylon insulation cover 4 and the lower portion of the flat mat 3 form a matching shape preventing relative rotation. Preferably, the upper surface of the nylon insulation cover 4 is provided with a groove 42, and matched therewith, the lower surface of the flat cushion block 3 is provided with a convex boss 31.
As shown in fig. 1-3 and 7, a rail lower pad is placed in the rail bearing groove of the upper iron pad 5, a steel rail 10 is laid on the rail lower pad, and an insulating gauge block 9 is arranged between the rail bearing groove and the steel rail 10. The upper iron base plate 5 is provided with a large round hole and an elastic strip mounting seat, the bottom surface of the elastic strip mounting seat is provided with a T-shaped bolt anti-rotation frustum, and a T-shaped bolt 12 is arranged in the inverted position. The T-shaped bolt 12 sequentially penetrates through the elastic strip mounting seat, the elastic strip 11, the flat washer 14 and the nut 13, the elastic strip 11 mounted between the upper iron base plate 5 and the insulating gauge block 9 is pressed tightly after the nut 13 is tightened, and the steel rail 10 is fixed on the lower iron base plate.
As shown in fig. 9-10, the posts 71 on the lower iron shim plate 7 penetrate through the elastic cushion 6 and the holes on the upper iron shim plate 7 when the assembly is carried out.
The fastener adopts the same structure to all highway sections in practical application, rail lower backing plate rigidity is 50 ~ 70kN/mm, and the fastener adopts a rail lower backing plate in unison, plays the coupling effect in the middle of rail and upper iron backing plate. The rigidity of the elastic cushion layer 6 is adjustable, and the elastic cushion layer 6 with the first rigidity is adopted in a non-small-radius curve section in a general road section; in a non-small-radius curve section in the vibration damping road section, an elastic cushion layer 6 with second rigidity is adopted; in the small radius curve section in the general road section and the vibration damping road section, an elastic cushion layer 6 with third rigidity is adopted; wherein the second stiffness < the first stiffness < the third stiffness. Specifically, when the elastic cushion is applied to a common road section, a medium-elastic under-plate elastic cushion layer with the rigidity of 50-70 kN/mm is adopted, and the system rigidity of about 40kN/mm is ensured; when the damping elastic cushion is applied to a damping road section, a high-elasticity under-plate elastic cushion layer with the rigidity of 20-30 kN/mm is adopted, and the system rigidity of 12-20 kN/mm is ensured; when the elastic cushion is applied to a small-radius curve section, the elastic cushion layer with the rigidity of 90-120 kN/mm under the low elastic plate is adopted, and the system rigidity of 50-70 kN/mm is guaranteed. Only the continuous beam bridge floor small-resistance section needing to reduce the longitudinal resistance of the fastener is replaced by the low-resistance base plate and the small-fastening-pressure elastic strip under the rail with the small friction coefficient.
In summary, the present invention has the following significant advantages:
1. the general urban railway fastener is general in all urban railways, meets the laying requirements of common and vibration-damping road sections, has the characteristics of consistent structure, simplicity in construction and maintenance and moderate cost, and has a value of large-scale popularization.
2. According to the universal urban railway fastener, the elastic cushion layer is arranged below the iron base plate of the fastener for laying the steel rail, the coupling base plate is arranged below the steel rail, and the series connection structure is adopted to limit the height of the elastic cushion layer below the iron base plate, so that the elasticity of the elastic cushion layer below the iron base plate can be fully exerted. The flexible cushion layer is adopted when the vibration reduction road section is paved, the medium hardness cushion layer is adopted when the general road section is paved, and the high hardness cushion layer is adopted when the small radius curve line section is paved. The elastic index of the elastic cushion layer under the iron base plate can be adjusted to meet the general laying requirement of the urban railway on the whole line. When a small-radius curve line section is laid, the stress of the track is large, the deformation of the fastener is required to be small, and the fastener has higher system rigidity. The system rigidity refers to the size of a vertical load required when the fastener sinks in a unit, the system elasticity of the fastener is reflected, and the larger the index is, the more rigid the system is.
3. The universal urban railway fastener meets the performance requirements of the common urban railway fasteners and the damping fasteners by adopting a unified structure, and has the advantages of simplicity and convenience in management in the installation and laying process.
4. According to the universal urban railway fastener, the intermediate elastic cushion layer of the fastener is slightly pre-pressed by the serial connection type fixing structure when in use, so that the elasticity of the intermediate elastic cushion layer can be fully exerted for vibration reduction, and the vibration reduction effect is good.
5. The universal urban railway fastener adopts the series connection type fixing structure, so that the transverse clearance between each part of the fastener is small, the transverse force resistance of the fastener is large, the stability is high, and the use safety is high.
6. The universal urban railway fastener disclosed by the invention does not need a special tool for dismounting, and facilitates the later fastener maintenance and repair work.
7. The universal urban railway fastener comprises a large round hole and an elastic strip mounting seat which are used for mounting and are arranged on an upper iron base plate, and a T-shaped bolt anti-rotation frustum is arranged on the bottom surface of the mounting seat; an oblate upright post is arranged on the lower iron base plate; a series connection type fixing structure is adopted; the middle elastic cushion layer is only pre-pressed for 0.5-1 mm when in use.
8. The universal urban railway fastener adopts staggered interfaces for installation, and is compatible with most urban rail transit installation positions.
9. The universal urban railway fastener can adopt elastic strips commonly used by urban rail transit.
10. According to the universal urban railway fastener, the fastener uniformly adopts the rail lower base plate, the rigidity of the rail lower base plate is 50-70 kN/mm, and the coupling effect is realized between the steel rail and the upper iron base plate.
11. According to the universal urban railway fastener, the rigidity of the elastic cushion layer under the plate is adjustable, and when the universal urban railway fastener is applied to a general road section, the elastic cushion layer under the plate with the medium rigidity of 50-70 kN/mm is adopted, so that the system has the system rigidity of about 40 kN/mm; when the damping elastic cushion is applied to a damping road section, a high-elasticity under-plate elastic cushion layer with the rigidity of 20-30 kN/mm is adopted, and the system rigidity of 12-20 kN/mm is ensured; when the elastic cushion is applied to a small-radius curve section, the elastic cushion layer with the rigidity of 90-120 kN/mm under the low elastic plate is adopted, and the system rigidity of 50-70 kN/mm is guaranteed. Only the continuous beam bridge floor small-resistance section needing to reduce the longitudinal resistance of the fastener is replaced by the low-resistance base plate and the small-fastening-pressure elastic strip under the rail with the small friction coefficient.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a general type urban railway fastener which characterized in that: the insulating coupling base plate is directly laid on the base, a lower iron base plate, an elastic cushion layer, an upper iron base plate, a nylon insulating cover, a flat cushion block and a heavy spring washer are sequentially laid on the insulating coupling base plate, and an anchoring bolt sequentially penetrates through the insulating coupling base plate from top to bottom and is in anchoring connection with the base; fixing a steel rail on the upper iron base plate;
the lower iron base plate is provided with a convex upright post, and the height of the upright post is smaller than the sum of the heights of the elastic cushion layer and the upper iron base plate which are penetrated through the upright post in a natural state; when the anchor bolt is installed and pre-tightened, the nylon insulating cover compresses the elastic cushion layer through the upper iron base plate until the lower surface of the nylon insulating cover is flush with the top surface of the upright post;
the rigidity of the elastic cushion layer is adjustable, and the elastic cushion layer with the first rigidity is adopted in a non-small-radius curve section in a general road section; in a non-small-radius curve section in the vibration damping road section, an elastic cushion layer with second rigidity is adopted; in the small-radius curve sections in the general road section and the vibration reduction road section, an elastic cushion layer with third rigidity is adopted; wherein the second stiffness < the first stiffness < the third stiffness.
2. The universal urban railway fastener as claimed in claim 1, wherein:
the lower part of the nylon insulation cover is provided with a convex edge, the edge is inserted into a gap between the upright columns on the upper iron base plate and the lower iron base plate, and the upper iron base plate and the lower iron base plate are locked in the horizontal direction.
3. The universal urban railway fastener as claimed in claim 2, wherein:
the inner part of the convex edge at the lower part of the nylon insulation cover and the upright post on the lower iron base plate form a matching shape for preventing relative rotation.
4. A universal urban railway fastener according to claim 3, wherein:
the cross sections of the inner part of the protruded edge at the lower part of the nylon insulation cover and the upright post on the lower iron base plate are oblate.
5. The universal urban railway fastener as claimed in claim 2, wherein:
the upper part of the nylon insulation cover and the lower part of the flat cushion block form a matching shape for preventing relative rotation.
6. The universal urban railway fastener as claimed in claim 5, wherein:
the upper surface of the nylon insulation cover is provided with a groove, and matched with the groove, the lower surface of the flat cushion block is provided with a convex boss.
7. The universal urban railway fastener as claimed in claim 1, wherein:
and a lower rail base plate is placed in the rail bearing groove of the upper iron base plate, the steel rail is laid on the lower rail base plate, and an insulating gauge block is arranged between the rail bearing groove and the steel rail.
8. The universal urban railway fastener as claimed in claim 7, wherein:
and the upper iron base plate is provided with an elastic strip mounting seat, the bottom surface of the elastic strip mounting seat is provided with a T-shaped bolt anti-rotation frustum, and a T-shaped bolt is inversely arranged in the T-shaped bolt anti-rotation frustum.
9. The universal urban railway fastener of claim 8, wherein:
the T-shaped bolt sequentially penetrates through the elastic strip mounting seat, the elastic strip, the flat washer and the nut, the elastic strip mounted between the upper iron base plate and the insulating gauge block is tightly pressed after the nut is screwed down, and the steel rail is fixed on the lower base plate of the rail.
10. A universal urban railway fastener according to claim 9, wherein:
in the section with small resistance of the continuous beam bridge surface, a rail lower base plate and a small buckling pressure elastic strip with smaller friction coefficient than other road sections are used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911379348.5A CN111118973A (en) | 2019-12-27 | 2019-12-27 | General type urban railway fastener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911379348.5A CN111118973A (en) | 2019-12-27 | 2019-12-27 | General type urban railway fastener |
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| Publication Number | Publication Date |
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| CN111118973A true CN111118973A (en) | 2020-05-08 |
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| CN201911379348.5A Pending CN111118973A (en) | 2019-12-27 | 2019-12-27 | General type urban railway fastener |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050078306A (en) * | 2004-01-29 | 2005-08-05 | (주) 철도안전연구소 | Apparatus for rail fastening having pad delivering load to roadbed through pad itself |
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| CN110158373A (en) * | 2019-06-06 | 2019-08-23 | 武汉坤能轨道系统技术有限公司 | A kind of fastener system suitable for administrative region of a city railway |
| CN211848656U (en) * | 2019-12-27 | 2020-11-03 | 中铁第四勘察设计院集团有限公司 | General type urban railway fastener |
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| CN110158373A (en) * | 2019-06-06 | 2019-08-23 | 武汉坤能轨道系统技术有限公司 | A kind of fastener system suitable for administrative region of a city railway |
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