CN111576096A - Retaining shoulder-free fastener for urban rail transit - Google Patents
Retaining shoulder-free fastener for urban rail transit Download PDFInfo
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- CN111576096A CN111576096A CN202010437611.8A CN202010437611A CN111576096A CN 111576096 A CN111576096 A CN 111576096A CN 202010437611 A CN202010437611 A CN 202010437611A CN 111576096 A CN111576096 A CN 111576096A
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- base plate
- elastic strip
- iron
- rail
- fastener
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 179
- 229910052742 iron Inorganic materials 0.000 claims abstract description 91
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- 239000007853 buffer solution Substances 0.000 claims abstract description 21
- 241001669679 Eleotris Species 0.000 claims abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000005284 excitation Effects 0.000 description 12
- 230000009286 beneficial effect Effects 0.000 description 8
- 238000010276 construction Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- E01B9/38—Indirect fastening of rails by using tie-plates or chairs; Fastening of rails on the tie-plates or in the chairs
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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
- E01B9/62—Rail fastenings incorporating resilient supports
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a no shoulder fastener for urban rail transit, which comprises: the device comprises an iron base plate, an insulating buffer base plate, a rail lower base plate, an insulating gauge block, an elastic strip, a first bolt fastener, a second bolt fastener, a flat base plate and a pre-buried sleeve; the insulating buffer base plate and the iron base plate are sequentially laid on the top of the sleeper from bottom to top, bolt through holes are formed at the diagonal positions of the insulating buffer base plate and the iron base plate, a flat cushion block is further arranged on the iron base plate, a sawtooth structure is formed at the joint of the flat cushion block and the iron base plate, and a first bolt fastener sequentially penetrates through the flat cushion block, the iron base plate and the insulating buffer base plate and is screwed into the embedded sleeve; an iron seat is arranged at the other diagonal position of the iron base plate, and the elastic strip is abutted and fixed on the iron seat through a second bolt fastener; the insulating gauge block is embedded and fixed between the steel rail and the iron base. The fastener is a huge improvement on the existing fasteners for the subway and the high-speed rail, has a simple structure and reasonable design, is more suitable for urban rail transit systems, and has a good application prospect.
Description
Technical Field
The invention relates to the technical field of steel rail fasteners, in particular to a shoulder-free fastener for urban rail transit.
Background
With the rapid growth of urban scale in China, rail transit networks are rapidly developed, and the length of lines and the operation speed are continuously increased. The shoulder-free fastener for the urban rail transit in China is mainly suitable for lines with the speed per hour of 100km/h or below, the speed per hour of more and more newly-built urban rail lines is generally increased to 120km/h or above at present, and a shoulder-free fastener system for the urban rail transit under the operation condition is still blank in China.
The current technology similar or analogous to the fastener system of this patent is mainly WJ-2 type fasteners for subways, WJ-2A and DTVI2 type fasteners, DTVII2 type fasteners, and WJ-7 type fasteners for high-speed railways. However, the WJ-2, WJ-2A and DTVII2 fasteners have only a low rail resistance function and do not have the conventional rail resistance function. The DTVI2 type fastener adopts a bolt-free elastic strip to fasten the steel rail, only has the conventional resistance function of the steel rail, but does not have the small resistance function of the steel rail, and the height of the steel rail can be adjusted only by arranging a height-adjusting base plate under an iron base plate, but not by arranging the height-adjusting base plate under the steel rail. WJ-7 type fastener leads to its fastener lateral width great owing to adopt in-line arrangement structure (anchor bolt, bullet strip are located the same straight line of perpendicular to rail), and the subway track generally is located underground tunnel, because horizontal space is limited in the underground tunnel to lead to this fastener can not satisfy the site operation requirement, moreover, the used bullet strip natural frequency of this fastener is comparatively close with the wheel rail excitation frequency in subway line rail corrugation section, appears bullet strip resonance fracture easily in the use.
Therefore, it is the problem that technical personnel in the field need to solve urgently to provide a no-shoulder fastener for urban rail transit that not only can realize the conventional resistance function of rail but also can realize the small resistance function of rail, and the accessible rail down and the mode of backing up the height-adjusting backing plate under the iron tie plate adjust the rail height position to and can effectively avoid the bullet strip to appear resonance fracture phenomenon and take place under the wheel rail excitation frequency.
Disclosure of Invention
In view of the above, in order to solve the technical problems that the fasteners for the subway in the prior art cannot simultaneously meet the small resistance function and the constant resistance function of the steel rail, and the fasteners for the high-speed rail have large transverse width and are easy to resonate with the shock excitation frequency of the wheel rail to break, the invention provides the non-shoulder fastener for the urban rail transit, which can realize the conventional resistance function of the steel rail and the small resistance function of the steel rail, can adjust the height position of the steel rail in a mode of filling a height-adjusting base plate under the rail and the iron base plate, and can effectively avoid the resonance fracture phenomenon of an elastic strip under the shock excitation frequency of the wheel rail.
In order to achieve the purpose, the invention adopts the following technical scheme:
a no fender shoulder fastener for urban rail transit for the fixed rail of adjustment includes:
the device comprises an iron base plate, an insulating buffer base plate, a rail lower base plate, an insulating gauge block, an elastic strip, a first bolt fastener, a second bolt fastener, a flat base plate and a pre-buried sleeve; the insulating buffer base plate and the iron base plate are sequentially laid on the top of the sleeper from bottom to top, bolt through holes are formed in opposite angles of the insulating buffer base plate and the iron base plate, the iron base plate is further provided with the flat cushion block, and a sawtooth structure is formed at the joint of the flat cushion block and the iron base plate; the embedded sleeve is embedded into the sleeper, and the first bolt fastener penetrates through the flat cushion block, the iron base plate and the insulating buffer base plate respectively and sequentially and is screwed into the embedded sleeve; the lower rail backing plate is arranged in the center of the top of the iron backing plate and is positioned below the steel rail; the other diagonal of the iron base plate is provided with an iron seat, the iron seat and the bolt through hole which are positioned on the same side of the steel rail are arranged along the length direction of the steel rail, and the second bolt fastener penetrates through the bolt fastening part of the middle limb of the elastic strip to butt and fix the elastic strip on the iron seat; the section of the insulating gauge block is L-shaped, one side wall of the insulating gauge block is embedded and fixed between the steel rail and the iron seat, and the tail ends of the middle limb and the side limb of the elastic strip are abutted against the other side wall of the insulating gauge block.
According to the technical scheme, compared with the prior art, the shoulder-free fastener for urban rail transit is disclosed, the transverse size of the fastener is reduced and the structure of the fastener is optimized by utilizing the staggered arrangement structure of the first bolt fastener and the elastic strips on the iron base plate, so that the overall space size of the fastener is reduced, the fastener can be suitable for the limited transverse space of an underground tunnel, and the construction of urban rail tunnels and bridges is facilitated. In addition, because urban rail transit line's curve radius is less, train wheel rail transverse force is great relatively, utilizes the sawtooth structure between iron tie plate and the flat cushion block in this application, has effectively increased the anti transverse load ability of fastener, has improved the transverse stability of fastener. The non-shoulder fastener for urban rail transit is a great improvement on the existing fasteners for subways and high-speed rails, is simple in structure and reasonable in design, is more suitable for urban rail transit systems, and has a good application prospect.
Further, the length of the iron backing plate is 350-390 mm.
Optionally, the length of the iron backing plate is 370 mm.
The beneficial effects that adopt above-mentioned technical scheme to produce are, greatly shortened the length of iron backing plate among the prior art (the length of iron backing plate among the prior art is 456mm), reduced the horizontal size of fastener, make it can be applicable to in the limited horizontal space of underground tunnel, be favorable to the construction of urban rail tunnel and bridge.
Furthermore, the first bolt fastener comprises an anchor bolt and a heavy spring washer, the heavy spring washer is sleeved on the anchor bolt and is located above the flat cushion block, and the anchor bolt sequentially penetrates through the flat cushion block, the iron base plate and the insulating buffer base plate and is screwed into the embedded sleeve.
The beneficial effect who adopts above-mentioned technical scheme to produce is, has improved this fastener overall structure's stability for this fastener can satisfy urban rail transit's functional requirement, the dependable performance, and the commonality is strong, and structural stability is good.
Further, second bolt fastener includes T type bolt, plain washer and nut, T type bolt passes in proper order from bottom to top the iron tie plate with the bolt-up position of limb in the bullet strip, the plain washer with the nut all with T type bolt threaded connection is used for with bullet strip butt is in on the iron stand.
The beneficial effects who adopts above-mentioned technical scheme to produce are that, have improved the overall structure stability of this fastener, have optimized the fastener structure simultaneously, have reduced the whole space size of fastener.
Further, the rail bottom slope of the iron base plate is 0 degree.
The anchor bolt has the advantages that fatigue load born by the anchor bolt is small, and the anchor bolt and the embedded sleeve are not easy to damage.
Furthermore, the elastic strip is omega-shaped and adopts one of a conventional buckling and pressing elastic strip and a small buckling and pressing elastic strip.
The steel rail fastening piece has the beneficial effects that the conventional resistance function and the small resistance function of the steel rail can be realized by replacing individual parts of the steel rail fastening piece under different road sections.
Further, the diameter of the section of the conventional buckling and pressing elastic strip is 13.5-14.5mm, and the diameter of the section of the small buckling and pressing elastic strip is 12.5-13.5 mm; the distance d from the tail ends of the middle limb and the side limb of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip to the highest points of the middle limb and the side limb is 36.5-37.5mm, the total width L of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip is 83.5-84.5mm, and the height difference h between the buckling end of the middle limb and the buckling end of the side limb of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip is 10-12 mm.
Optionally, the section diameter of the conventional buckling and pressing elastic strip is 14mm, and the section diameter of the small buckling and pressing elastic strip is 13 mm; the distance d from the tail ends of the middle limb and the side limb of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip to the highest points of the middle limb and the side limb is 37mm, the total width L of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip is 84mm, the height difference h between the buckling end of the middle limb and the buckling end of the side limb of the conventional buckling pressure elastic strip is 12mm, and the height difference h between the buckling end of the middle limb and the buckling end of the side limb of the small buckling pressure elastic strip is 10 mm.
Further, the first-order natural frequency of the conventional buckling-pressure elastic strip is 830-880Hz, and the second-order natural frequency is 900-950 Hz; the first-order natural frequency of the small-buckling-pressure elastic strip is 630-680Hz, and the second-order natural frequency is 670-720 Hz.
Optionally, the first-order natural frequency of the conventional buckling-pressure elastic strip is 863Hz, and the second-order natural frequency is 930 Hz; the first-order natural frequency of the small-button-pressure elastic strip is 653Hz, and the second-order natural frequency of the small-button-pressure elastic strip is 700 Hz.
The technical scheme has the beneficial effects that the first-order and second-order natural frequencies of the conventional buckling pressure elastic strip in the fastener are always greater than the excitation frequency of the wheel rail (the wheel rail excitation frequency calculated according to the rail corrugation and the vehicle speed is about 764Hz), the first-order and second-order natural frequencies of the small buckling pressure elastic strip are always less than the excitation frequency of the wheel rail, namely the natural frequencies of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip are respectively obvious from the wheel rail excitation frequency difference, and the elastic strip and the wheel rail can be effectively prevented from being subjected to resonant fracture.
Further, the thickness of the rail lower backing plate is 14mm, and the top end face and the bottom end face of the rail lower backing plate are both provided with transverse grooves.
Furthermore, the lower backing plate of the rail is made of rubber.
The beneficial effects that adopt above-mentioned technical scheme to produce are, provide good elastic deformation's space for rail underboarding, have restricted the deformation of rail underboarding, have improved the elasticity performance of rail underboarding.
The device further comprises an elevation adjusting base plate, wherein the elevation adjusting base plate comprises a rail lower elevation base plate and an iron base plate lower elevation base plate, the rail lower elevation base plate is arranged between the rail lower base plate and the iron base plate, and the size of the rail lower elevation base plate is matched with that of the rail lower base plate; the iron base plate heightening base plate is arranged between the iron base plate and the insulating buffer base plate and is matched with the iron base plate in size.
Adopt the beneficial effect that above-mentioned technical scheme produced to be, can realize the adjustment to the rail height and control the position, and the adjustment volume surpasss current fastener greatly, has greatly made things convenient for the maintenance operation of railway rails.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a cross-sectional view of a shoulder-free fastener for urban rail transit according to the present invention;
FIG. 2 is a schematic perspective view of a non-shoulder fastener for urban rail transit according to the present invention;
FIG. 3 is an exploded view of a shoulder-free fastener for urban rail transit according to the present invention;
FIG. 4 is a top view of a shoulder-free fastener for urban rail transit in accordance with the present invention;
FIG. 5 is a front view of an iron backing plate of a shoulder-free fastener for urban rail transit according to the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 1 taken at A;
FIG. 7 is a front sectional view of an elastic strip of a non-shoulder fastener for urban rail transit according to the present invention;
fig. 8 is a schematic structural diagram of a lower rail pad of a shoulder-free fastener for urban rail transit provided by the invention.
Wherein: 1-iron base plate, 11-iron base, 2-insulating buffer base plate, 3-under-rail base plate, 31-transverse groove, 4-insulating gauge block, 5-elastic strip, 6-first bolt fastener, 61-anchoring bolt, 62-heavy spring washer, 7-second bolt fastener, 71-T bolt, 72-flat washer, 73-nut, 8-flat cushion block, 9-embedded sleeve, 10-heightening base plate, 101-under-rail heightening base plate, 102-under-iron base plate heightening base plate, 100-steel rail and 200-sleeper.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The invention discloses a shoulder-free fastener for urban rail transit, which is used for adjusting and fixing a steel rail 100 and comprises:
the device comprises an iron base plate 1, an insulating buffer base plate 2, a rail lower base plate 3, an insulating gauge block 4, an elastic strip 5, a first bolt fastener 6, a second bolt fastener 7, a flat cushion block 8 and a pre-buried sleeve 9; the insulating buffer base plate 2 and the iron base plate 1 are sequentially paved on the top of the sleeper 200 from bottom to top, bolt through holes are formed at the opposite corners of the insulating buffer base plate 2 and the iron base plate 1, a flat cushion block 8 is further arranged on the iron base plate 1, and a sawtooth structure is formed at the joint of the flat cushion block 8 and the iron base plate 1; the embedded sleeve 9 is embedded into the sleeper 200, and the first bolt fastener 6 sequentially penetrates through the flat cushion block 8, the iron base plate 1 and the insulating buffer base plate 2 and is screwed into the embedded sleeve 9; the under-rail backing plate 3 is arranged in the center of the top of the iron backing plate 1, and the under-rail backing plate 3 is positioned below the steel rail 100; an iron seat 11 is arranged at the other diagonal position of the iron base plate 1, the iron seat 11 and the bolt through hole which are positioned at the same side of the steel rail 100 are arranged along the length direction of the steel rail 100, and a second bolt fastener 7 penetrates through the bolt fastening part of the middle limb of the elastic strip 5 to butt and fix the elastic strip 5 on the iron seat 11; the cross section of the insulating gauge block 4 is L-shaped, one side wall of the insulating gauge block 4 is embedded and fixed between the steel rail 100 and the iron seat 11, and the tail ends of the middle limb and the side limb of the elastic strip 5 are abutted against the other side wall of the insulating gauge block 4.
According to an alternative embodiment of the invention, the length of the iron base plate 1 is 370mm, so that the length of the iron base plate in the prior art is greatly shortened (the length of the iron base plate in the prior art is 456mm), and the transverse size of the fastener is reduced, so that the fastener can be suitable for the limited transverse space of the underground tunnel, and is beneficial to the construction of urban rail tunnels and bridges.
According to an optional embodiment of the invention, the first bolt fastener 6 comprises an anchor bolt 61 and a heavy spring washer 62, the heavy spring washer 62 is sleeved on the anchor bolt 61 and is positioned above the flat cushion block 8, and the anchor bolt 61 sequentially passes through the flat cushion block 8, the iron cushion plate 1 and the insulating buffer cushion plate 2 and is screwed into the embedded sleeve 9, so that the stability of the overall structure of the fastener is improved, the fastener can meet the functional requirements of urban rail transit, and the fastener is reliable in performance, strong in universality and good in structural stability.
According to an alternative embodiment of the present invention, the second bolt fastening member 7 includes a T-shaped bolt 71, a flat washer 72 and a nut 73, the T-shaped bolt 71 sequentially penetrates through the bolt fastening portions of the middle limbs of the iron backing plate 1 and the elastic strip 5 from bottom to top, and both the flat washer 72 and the nut 73 are in threaded connection with the T-shaped bolt 71 for abutting the elastic strip 5 on the iron seat 11, so as to improve the overall structural stability of the fastener, optimize the fastener structure, and reduce the overall spatial dimension of the fastener.
According to an alternative embodiment of the invention, the rail bottom slope of the iron base plate 1 is 0 degree, so that the fatigue load effect borne by the anchor bolt is small, and the anchor bolt and the embedded sleeve are not easy to damage.
According to an alternative embodiment of the invention, the elastic strip 5 is an omega-shaped elastic strip, and the elastic strip 5 adopts one of a conventional fastening elastic strip and a small fastening elastic strip, so that the fastener can realize the conventional resistance function and the small resistance function of the steel rail by replacing individual parts under different road sections.
According to an alternative embodiment of the present invention, the cross-sectional diameter of the conventional snap spring is 14mm, and the cross-sectional diameter of the small snap spring is 13 mm; the distance d from the tail ends of the middle limb and the side limb of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip to the highest points of the middle limb and the side limb is 37mm, the total width L of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip is 84mm, the height difference h between the buckling end of the middle limb and the buckling end of the side limb of the conventional buckling pressure elastic strip is 12mm, and the height difference h between the buckling end of the middle limb and the buckling end of the side limb of the small buckling pressure elastic strip is 10 mm.
According to an alternative embodiment of the present invention, the first order natural frequency of the conventional buckling-pressure spring bar is 863Hz, and the second order natural frequency is 930 Hz; the first-order natural frequency of the small-buckling-pressure elastic strip is 653Hz, and the second-order natural frequency of the small-buckling-pressure elastic strip is 700Hz, so that the first-order natural frequency and the second-order natural frequency of the conventional buckling-pressure elastic strip in the fastener are always greater than the excitation frequency of the wheel rail (the wheel rail excitation frequency calculated according to the rail corrugation and the vehicle speed is about 764Hz), the first-order natural frequency and the second-order natural frequency of the small-buckling-pressure elastic strip are always smaller than the excitation frequency of the wheel rail, namely the natural frequencies of the conventional buckling-pressure elastic strip and the small-buckling-pressure elastic strip and the wheel rail excitation frequency difference are obvious, and the elastic strip and the wheel rail can be effectively prevented.
According to an alternative embodiment of the present invention, the thickness of the under rail pad 3 is 14mm, and the top end surface and the bottom end surface of the under rail pad 3 are each formed with a lateral groove 31; specifically, the material that the backing plate adopted under the rail is the rubber material to for the backing plate under the rail provides good elastic deformation's space, restricted the deformation of backing plate under the rail, improved the elasticity performance of backing plate under the rail.
According to an optional embodiment of the invention, the steel rail vehicle further comprises an elevation adjusting base plate 10, wherein the elevation adjusting base plate 10 comprises a rail lower elevation base plate 101 and an iron base plate lower elevation base plate 102, the rail lower elevation base plate 101 is arranged between the rail lower base plate 3 and the iron base plate 1, and the size of the rail lower elevation base plate 101 is matched with that of the rail lower base plate 3; the iron base plate heightening base plate 102 is arranged between the iron base plate 1 and the insulating buffer base plate 2 and is matched with the iron base plate 1 in size, so that the height and the left and right positions of a steel rail can be adjusted, the adjustment amount greatly exceeds the existing fasteners, and the maintenance and repair operation of a railway track is greatly facilitated.
According to the non-shoulder fastener for urban rail transit, the first bolt fasteners and the staggered arrangement structure of the elastic strips on the iron base plate are utilized, so that the transverse size of the fastener is reduced, the structure of the fastener is optimized, the overall space size of the fastener is reduced, the fastener can be suitable for the limited transverse space of an underground tunnel, and construction of urban rail tunnels and bridges is facilitated. In addition, because urban rail transit line's curve radius is less, train wheel rail transverse force is great relatively, utilizes the sawtooth structure between iron tie plate and the flat cushion block in this application, has effectively increased the anti transverse load ability of fastener, has improved the transverse stability of fastener. The non-shoulder fastener for urban rail transit is a great improvement on the existing fasteners for subways and high-speed rails, is simple in structure and reasonable in design, is more suitable for urban rail transit systems, and has a good application prospect.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. The utility model provides a no fender shoulder fastener for urban rail transit for the fixed rail of adjustment (100), its characterized in that includes:
the device comprises an iron base plate (1), an insulating buffer base plate (2), a rail lower base plate (3), an insulating gauge block (4), an elastic strip (5), a first bolt fastener (6), a second bolt fastener (7), a flat cushion block (8) and an embedded sleeve (9); the insulating buffer base plate (2) and the iron base plate (1) are sequentially laid on the top of a sleeper (200) from bottom to top, bolt through holes are formed at the diagonal positions of the insulating buffer base plate (2) and the iron base plate (1), the iron base plate (1) is further provided with the flat cushion block (8), and a sawtooth structure is formed at the joint of the flat cushion block (8) and the iron base plate (1); the embedded sleeve (9) is embedded into the sleeper (200), and the first bolt fastener (6) sequentially penetrates through the flat cushion block (8), the iron base plate (1) and the insulating buffer base plate (2) and is screwed into the embedded sleeve (9); the lower rail base plate (3) is arranged in the center of the top of the iron base plate (1), and the lower rail base plate (3) is positioned below the steel rail (100); an iron seat (11) is arranged at the other diagonal position of the iron base plate (1), the iron seat (11) and the bolt through hole which are positioned at the same side of the steel rail (100) are arranged along the length direction of the steel rail (100), and the second bolt fastener (7) penetrates through the bolt fastening part of the middle limb of the elastic strip (5) to butt and fix the elastic strip (5) on the iron seat (11); the cross section of the insulating gauge block (4) is L-shaped, one side wall of the insulating gauge block (4) is embedded and fixed between the steel rail (100) and the iron seat (11), and the tail ends of the middle limb and the side limb of the elastic strip (5) are abutted against the other side wall of the insulating gauge block (4).
2. The no-shoulder fastener for urban rail transit as claimed in claim 1, wherein the length of said iron tie plate (1) is 350-390 mm.
3. The no fender shoulder fastener of claim 1, characterized in that, the first bolt fastener (6) includes an anchor bolt (61) and a heavy spring washer (62), the heavy spring washer (62) is sleeved on the anchor bolt (61) and is located above the flat cushion block (8), and the anchor bolt (61) passes through the flat cushion block (8), the iron tie plate (1) and the insulating cushion plate (2) in turn and is screwed into the embedded sleeve (9).
4. The no fender shoulder fastener of claim 1, characterized in that, the second bolt fastener (7) includes a T-bolt (71), a flat washer (72) and a nut (73), the T-bolt (71) passes through the bolt fastening positions of the iron base plate (1) and the middle limb of the elastic strip (5) from bottom to top in turn, and the flat washer (72) and the nut (73) are both connected with the T-bolt (71) by screw threads for abutting the elastic strip (5) on the iron base (11).
5. The no-shoulder fastener for urban rail transit according to claim 1, wherein the elastic strip (5) is an omega-shaped elastic strip, and the elastic strip (5) adopts one of a conventional fastening elastic strip and a small fastening elastic strip.
6. The no-shoulder fastener for urban rail transit according to claim 5, wherein the cross-sectional diameter of said conventional fastening pressure elastic strip is 13.5-14.5mm, and the cross-sectional diameter of said small fastening pressure elastic strip is 12.5-13.5 mm; the distance d from the tail ends of the middle limb and the side limb of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip to the highest points of the middle limb and the side limb is 36.5-37.5mm, the total width L of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip is 83.5-84.5mm, and the height difference h between the buckling end of the middle limb and the buckling end of the side limb of the conventional buckling pressure elastic strip and the small buckling pressure elastic strip is 10-12 mm.
7. The buckle of claim 6, wherein the first-order natural frequency of the conventional buckle strap is 830-880Hz, and the second-order natural frequency is 900-950 Hz; the first-order natural frequency of the small-buckling-pressure elastic strip is 630-680Hz, and the second-order natural frequency is 670-720 Hz.
8. The no-shoulder fastener for urban rail transit according to claim 1, characterized in that the thickness of said rail underlay sheet (3) is 14mm, and the top and bottom end faces of said rail underlay sheet (3) are formed with transverse grooves (31).
9. The no-shoulder fastener for urban rail transit according to any one of claims 1-8, further comprising an heightening base plate (10), wherein the heightening base plate (10) comprises a rail lower heightening base plate (101) and an iron base plate lower heightening base plate (102), the rail lower heightening base plate (101) is arranged between the rail lower base plate (3) and the iron base plate (1), and the rail lower heightening base plate (101) has a size adapted to the rail lower base plate (3); the iron base plate downward-adjusting height-adjusting base plate (102) is arranged between the iron base plate (1) and the insulating buffer base plate (2) and is matched with the iron base plate (1) in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010437611.8A CN111576096A (en) | 2020-05-21 | 2020-05-21 | Retaining shoulder-free fastener for urban rail transit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010437611.8A CN111576096A (en) | 2020-05-21 | 2020-05-21 | Retaining shoulder-free fastener for urban rail transit |
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| Publication Number | Publication Date |
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| CN111576096A true CN111576096A (en) | 2020-08-25 |
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| CN202010437611.8A Pending CN111576096A (en) | 2020-05-21 | 2020-05-21 | Retaining shoulder-free fastener for urban rail transit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113564971A (en) * | 2021-09-09 | 2021-10-29 | 湖南长盈机电科技有限公司 | Protective structure for steel rail insulating fastener |
| CN113605154A (en) * | 2021-07-16 | 2021-11-05 | 石家庄铁道大学 | Double-track-pitch railway concrete sleeper |
| CN114790668A (en) * | 2022-04-25 | 2022-07-26 | 上海工程技术大学 | Low-height vibration reduction fastener with side baffles |
| CN114941260A (en) * | 2022-05-24 | 2022-08-26 | 中铁隆昌铁路器材有限公司 | Iron seat fastener system suitable for urban railway and installation method thereof |
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| CN201962561U (en) * | 2011-03-23 | 2011-09-07 | 中铁二院工程集团有限责任公司 | Urban railway system track fastener |
| CN206090188U (en) * | 2016-06-30 | 2017-04-12 | 中铁上海设计院集团有限公司 | Big vertical resistance urban rail transit fastener |
| CN212505646U (en) * | 2020-05-21 | 2021-02-09 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Retaining shoulder-free fastener for urban rail transit |
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| EP0460778A1 (en) * | 1990-05-07 | 1991-12-11 | Preussag Stahl Aktiengesellschaft | Attachment for a railway rail base plate and method for obtaining a switch and a steel Y shaped sleeper |
| CN201962561U (en) * | 2011-03-23 | 2011-09-07 | 中铁二院工程集团有限责任公司 | Urban railway system track fastener |
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| CN114790668A (en) * | 2022-04-25 | 2022-07-26 | 上海工程技术大学 | Low-height vibration reduction fastener with side baffles |
| CN114790668B (en) * | 2022-04-25 | 2024-02-27 | 上海工程技术大学 | Low-height vibration reduction fastener with side block |
| CN114941260A (en) * | 2022-05-24 | 2022-08-26 | 中铁隆昌铁路器材有限公司 | Iron seat fastener system suitable for urban railway and installation method thereof |
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