CN211848656U - General type urban railway fastener - Google Patents
General type urban railway fastener Download PDFInfo
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- CN211848656U CN211848656U CN201922406962.8U CN201922406962U CN211848656U CN 211848656 U CN211848656 U CN 211848656U CN 201922406962 U CN201922406962 U CN 201922406962U CN 211848656 U CN211848656 U CN 211848656U
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- iron base
- fastener
- cushion layer
- elastic cushion
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 156
- 229910052742 iron Inorganic materials 0.000 claims abstract description 78
- 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 28
- 238000009413 insulation Methods 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims abstract description 14
- 238000010168 coupling process Methods 0.000 claims abstract description 14
- 238000005859 coupling reaction Methods 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 230000009467 reduction Effects 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 7
- 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 48
- 238000010276 construction Methods 0.000 description 10
- 238000012423 maintenance Methods 0.000 description 5
- 229920001007 Nylon 4 Polymers 0.000 description 3
- 230000001737 promoting effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005056 compaction Methods 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
- 238000007726 management method Methods 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
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- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000002356 single layer Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a general type municipality territory railway fastener, its 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 utility model discloses a unified structure has satisfied the performance requirement of the ordinary fastener of urban area railway and damping fastener, has the advantage of simple, convenient management in the installation laying process.
Description
Technical Field
The utility model belongs to the technical field of the railway track, concretely relates to general type municipality territory 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.
SUMMERY OF THE UTILITY MODEL
At least one in defect or improvement demand more than prior art, the utility model provides a general fastener of city territory railway full line satisfies the requirement of laying of ordinary and damping highway section, and the fastener has the structure unanimous, and construction, maintenance are simple, and moderate characteristics of cost have the value of carrying on promoting on a large scale.
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 passes 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, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:
1. the utility model discloses a general type urban railway fastener, the urban railway is general in all lines, satisfies the requirement of laying of ordinary and damping highway section, and the fastener has the structure unanimity, and construction, maintenance are simple, and moderate characteristics of cost have the value of carrying on promoting on a large scale.
2. The utility model discloses a general type municipality territory railway fastener sets up the elastic cushion layer under the fastener iron tie plate of laying the rail, only sets up the coupling backing plate under the rail, adopt series connection structure to do under the iron tie plate the elastic cushion layer highly spacing can, like this can full play iron tie plate under the elasticity of elastic cushion layer. 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 utility model discloses a general type urban railway fastener adopts unified structure to satisfy the performance requirement of the ordinary fastener of urban railway and damping fastener, has the advantage of simple, convenient management in the installation laying process.
4. The utility model discloses a general type municipality territory railway fastener, the series connection fixed knot of adoption constructs very little to the middle elastic cushion layer of fastener pre-compaction when using, and the elasticity of elastic cushion layer carries out the damping in the middle of can full play, and the damping is effectual.
5. The utility model discloses a general type municipality territory railway fastener, the serial-type fixed knot who adopts constructs and makes that the transverse gap is little between each spare part of fastener, and the anti transverse force of fastener is big, and stability is high, and the safety in utilization is high.
6. The utility model discloses a general type urban railway fastener, the dismouting need not specialized tool, makes things convenient for the fastener maintenance work in later stage.
7. The utility model discloses a general urban railway fastener, which comprises a large round hole and an elastic strip mounting seat which are arranged on an upper iron backing plate, wherein 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 utility model discloses a general type urban railway fastener, the installation adopts the staggered formula interface, the urban rail transit mounted position of compatible overwhelming majority.
9. The utility model discloses a general type urban railway fastener can adopt the bullet strip that urban rail transit was used commonly.
10. The utility model discloses a general type urban railway fastener, fastener unify and adopt a rail lower bolster, 50 ~ 70kN/mm of rail lower bolster rigidity play the coupling in the middle of rail and upper iron backing plate.
11. The utility model discloses a general type urban railway fastener, the elastic cushion layer rigidity under the board is adjustable, when general highway section is used, adopts the elastic cushion layer under the board of rigidity moderate elasticity 50 ~ 70kN/mm, guarantees that the system has system rigidity 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 structural view of a universal urban railway fastener according to an embodiment of the present invention;
fig. 2 is a schematic top view of a universal urban railway fastener according to an embodiment of the present invention;
fig. 3 is an exploded view of a universal urban railway fastener according to an embodiment of the present invention;
fig. 4 is an exploded view of a universal urban railway fastener according to 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 cushion block of the universal urban railway fastener according to an embodiment of the present invention;
FIG. 7 is a schematic view of an upper iron backing plate of the universal urban railway fastener according to an embodiment of the present invention;
FIG. 8 is a schematic view of the lower iron plate of the universal urban railway fastener according to an embodiment of the present invention;
fig. 9 is a schematic view of a series structure of an upper iron plate, a lower iron plate 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 of the installation of the series connection structure of the upper and lower iron plates and the elastic cushion layer of the universal 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 clearly understood, the present invention is further described in 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. Furthermore, the technical features mentioned in the embodiments of the present invention described below can 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 the following embodiments.
As a preferred embodiment of the present invention, as shown in fig. 1-10, the utility model provides a general urban railway fastener, a nylon sleeve 15 is pre-embedded in the base, an insulating coupling backing plate 8 is directly laid on the base, a lower iron backing plate 7, an elastic cushion layer 6, an upper iron backing plate 5, a nylon insulating cover 4, a flat cushion block 3 and a heavy spring washer 2 are sequentially laid on the insulating coupling backing plate 8, and an anchoring bolt 1 sequentially passes through from top to bottom and is anchored and connected with the base; 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.
To sum up, the utility model discloses have following apparent advantage:
1. the utility model discloses a general type urban railway fastener, the urban railway is general in all lines, satisfies the requirement of laying of ordinary and damping highway section, and the fastener has the structure unanimity, and construction, maintenance are simple, and moderate characteristics of cost have the value of carrying on promoting on a large scale.
2. The utility model discloses a general type municipality territory railway fastener sets up the elastic cushion layer under the fastener iron tie plate of laying the rail, only sets up the coupling backing plate under the rail, adopt series connection structure to do under the iron tie plate the elastic cushion layer highly spacing can, like this can full play iron tie plate under the elasticity of elastic cushion layer. 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 utility model discloses a general type urban railway fastener adopts unified structure to satisfy the performance requirement of the ordinary fastener of urban railway and damping fastener, has the advantage of simple, convenient management in the installation laying process.
4. The utility model discloses a general type municipality territory railway fastener, the series connection fixed knot of adoption constructs very little to the middle elastic cushion layer of fastener pre-compaction when using, and the elasticity of elastic cushion layer carries out the damping in the middle of can full play, and the damping is effectual.
5. The utility model discloses a general type municipality territory railway fastener, the serial-type fixed knot who adopts constructs and makes that the transverse gap is little between each spare part of fastener, and the anti transverse force of fastener is big, and stability is high, and the safety in utilization is high.
6. The utility model discloses a general type urban railway fastener, the dismouting need not specialized tool, makes things convenient for the fastener maintenance work in later stage.
7. The utility model discloses a general urban railway fastener, which comprises a large round hole and an elastic strip mounting seat which are arranged on an upper iron backing plate, wherein 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 utility model discloses a general type urban railway fastener, the installation adopts the staggered formula interface, the urban rail transit mounted position of compatible overwhelming majority.
9. The utility model discloses a general type urban railway fastener can adopt the bullet strip that urban rail transit was used commonly.
10. The utility model discloses a general type urban railway fastener, fastener unify and adopt a rail lower bolster, 50 ~ 70kN/mm of rail lower bolster rigidity play the coupling in the middle of rail and upper iron backing plate.
11. The utility model discloses a general type urban railway fastener, the elastic cushion layer rigidity under the board is adjustable, when general highway section is used, adopts the elastic cushion layer under the board of rigidity moderate elasticity 50 ~ 70kN/mm, guarantees that the system has system rigidity 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 merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
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 |
|---|---|---|---|
| CN201922406962.8U CN211848656U (en) | 2019-12-27 | 2019-12-27 | General type urban railway fastener |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922406962.8U CN211848656U (en) | 2019-12-27 | 2019-12-27 | General type urban railway fastener |
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| Publication Number | Publication Date |
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| CN211848656U true CN211848656U (en) | 2020-11-03 |
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| CN201922406962.8U Active CN211848656U (en) | 2019-12-27 | 2019-12-27 | General type urban railway fastener |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118973A (en) * | 2019-12-27 | 2020-05-08 | 中铁第四勘察设计院集团有限公司 | General type urban railway fastener |
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2019
- 2019-12-27 CN CN201922406962.8U patent/CN211848656U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118973A (en) * | 2019-12-27 | 2020-05-08 | 中铁第四勘察设计院集团有限公司 | General type urban railway fastener |
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Effective date of registration: 20231222 Address after: 430063 No. 745 Yangyuan Peace Avenue, Wuchang District, Wuhan City, Hubei Province Patentee after: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. Address before: 430063 No. 745 Yangyuan Peace Avenue, Wuchang District, Wuhan City, Hubei Province Patentee before: CHINA RAILWAY SIYUAN SURVEY AND DESIGN GROUP Co.,Ltd. Patentee before: ANHUI CHAOHU CASTING FACTORY Co.,Ltd. |