阅读说明：本技术 一种轨距可调无砟道岔垫板紧固系统 (Ballastless turnout base plate fastening system with adjustable track gauge ) 是由 王阿利 施庆峰 袁宝军 李悦 冯毅 刘强 于 2021-10-13 设计创作，主要内容包括：一种轨距可调无砟道岔垫板紧固系统,包括铁垫板、弹性垫板、调高垫板及岔枕螺栓,所述铁垫板的两端具有第一长圆孔,弹性垫板的两端具有第二长圆孔,调高垫板的两端具有第三长圆孔；所述第一长圆孔与第二长圆孔中插装有偏心套,且偏心套的圆形内孔中心与第一长圆孔的中心偏心值为e；偏心套的上端具有防转凸台且上方设有盖板,盖板的中央具有过孔、下端面上设有防转槽,并使防转凸台嵌入防转槽中；所述岔枕螺栓依次穿过盖板中央的过孔、偏心套的圆形内孔及第三长圆孔后与岔枕固定,将所述铁垫板、弹性垫板、调高垫板的两端固定连接在岔枕上。本发明通过将所述偏心套旋转180°,使铁垫板横向移动偏心值e,从而达到轨距调整。(A rail gauge adjustable ballastless turnout base plate fastening system comprises an iron base plate, an elastic base plate, a heightening base plate and turnout sleeper bolts, wherein first long round holes are formed in two ends of the iron base plate; eccentric sleeves are inserted into the first long round hole and the second long round hole, and the eccentric value of the centers of the circular inner holes of the eccentric sleeves and the center of the first long round hole is e; the upper end of the eccentric sleeve is provided with an anti-rotation boss, a cover plate is arranged above the eccentric sleeve, the center of the cover plate is provided with a through hole, the lower end surface of the cover plate is provided with an anti-rotation groove, and the anti-rotation boss is embedded into the anti-rotation groove; the switch tie bolt sequentially penetrates through the through hole in the center of the cover plate, the circular inner hole of the eccentric sleeve and the third long circular hole and then is fixed with the switch tie, and two ends of the iron base plate, the elastic base plate and the height-adjusting base plate are fixedly connected onto the switch tie. According to the invention, the eccentric sleeve is rotated by 180 degrees, so that the iron base plate transversely moves by the eccentric value e, thereby achieving the purpose of adjusting the track gauge.)

1. A rail gauge adjustable ballastless turnout base plate fastening system comprises an iron base plate (1), an elastic base plate (2), a heightening base plate (3) and a turnout sleeper bolt (4), wherein the elastic base plate (2) is arranged below the iron base plate (1), and the heightening base plate (3) is arranged below the elastic base plate (2); the method is characterized in that:

two ends of the iron base plate (1) are respectively provided with a first long round hole (1-1), and the first long round holes (1-1) are formed by connecting two semicircular holes which are oppositely arranged and have the same radius R0 through straight sections (1-2); two ends of the elastic backing plate (2) are respectively provided with a second long round hole (2-1), and the second long round holes (2-1) are formed by connecting two semicircular holes which are oppositely arranged and have the same radius R1 through straight sections (2-2); the two ends of the height-adjusting backing plate (3) are respectively provided with a third long round hole (3-1), and the third long round holes (3-1) are formed by connecting two semicircular holes which are oppositely arranged and have the same radius R2 through straight sections (3-2); the first long round hole (1-1) corresponds to the upper and lower centers of the second long round hole (2-1) and the third long round hole (3-1);

the first long round hole (1-1) and the second long round hole (2-1) are inserted with an eccentric sleeve (6), and the outer diameter of the eccentric sleeve (6) is formed by connecting two semicircular parts which are oppositely arranged and have the same radius R through a straight section (6-1); the eccentric value of the center of the circular inner hole of the eccentric sleeve (6) and the center of the first long round hole (1-1) is e; an anti-rotation boss (6-2) is arranged on the upper straight section (6-1) of the eccentric sleeve (6);

a cover plate (5) is arranged above the eccentric sleeve (6), a through hole (5-1) is formed in the center of the cover plate (5), rubber gaskets (5-2) are arranged on two sides of the lower end face of the cover plate (5), anti-rotation grooves (5-3) matched with the anti-rotation bosses (6-2) are formed in the lower end face of the cover plate (5) on two sides of the through hole (5-1), and the anti-rotation bosses (6-2) are embedded into the anti-rotation grooves (5-3) to form an anti-rotation function;

the switch tie bolt (4) sequentially penetrates through a through hole (5-1) in the center of the cover plate (5), a circular inner hole of the eccentric sleeve (6) and a third long round hole (3-1) and then is fixed with the switch tie, and two ends of the iron base plate (1), the elastic base plate (2) and the height-adjusting base plate (3) are fixedly connected to the switch tie; the eccentric sleeve (6) is rotated by 180 degrees, so that the iron base plate (1) moves transversely by an eccentric value e, and the track gauge is adjusted.

2. The gauge-adjustable ballastless turnout base plate fastening system according to claim 1, characterized in that: the eccentric sleeve (6) is composed of a non-eccentric steel sleeve (6-3) and an eccentric buffer sleeve (6-4) coated on the outer wall of the non-eccentric steel sleeve (6-3), the outer diameter of the eccentric buffer sleeve (6-4) is formed by connecting two semi-circles which are oppositely arranged and have the same radius R through a straight section (6-1), the eccentric value of the center of the eccentric buffer sleeve (6-4) to the left or the right is e, and the eccentric value of the center of a circular inner hole of the non-eccentric steel sleeve (6-1) and the center of a first long circular hole (1-1) is e.

3. The gauge-adjustable ballastless turnout base plate fastening system according to claim 2, characterized in that: the circular inner hole of the non-eccentric steel sleeve (6-1) is of a step structure, and the inner diameter of the upper part is larger than that of the lower part.

4. The ballastless turnout base plate fastening system of claim 3, wherein: the eccentric buffer sleeve (6-2) is formed by vulcanizing glass fiber reinforced polyamide 66.

5. The gauge-adjustable ballastless turnout base plate fastening system according to claim 4, characterized in that: the length of the straight section (1-2), the length of the straight section (2-2), the length of the straight section (3-2) and the length of the straight section (6-1) are all 2P; the eccentricity value e is less than or equal to P.

6. The fastening system of the gauge-adjustable ballastless turnout slab of claim 1, 2, 3, 4 or 5, wherein: the radius R0 is 0.5-1 mm larger than the radius R, the radius R1 is 1-2 mm larger than the radius R, and the radius R2 is 0.5-2 mm larger than the radius of the switch tie bolt 4.

7. The gauge-adjustable ballastless turnout base plate fastening system according to claim 6, characterized in that: grooves (5-4) are formed in two sides of the lower end face of the cover plate (5), and the rubber gaskets (5-2) are embedded in the grooves (5-4).

8. The adjustable-gauge ballastless turnout fastener system according to claim 7, wherein: the dynamic and static stiffness ratio of the elastic base plate (2) is less than 1.5; the rigidity of the rubber gasket (5-2) is 2 kN/mm-5 kN/mm.

Technical Field

The invention belongs to the technical field of railway turnouts, and particularly relates to a fastening system for a track gauge-adjustable ballastless turnout tie plate.

Background

The closest prior art to the present invention is the invention patent "a ballastless turnout fastener system cn202010488902. x" previously applied by the applicant. The backing plate fastening system of this application comprises switch tie bolt, spring washer, compound position sleeve, iron tie plate, elasticity backing plate, heightening backing plate, and its compound position sleeve is circular with the mounting hole of iron tie plate, does not possess the adjustment gauge function. Although the composite locating sleeve adopts an eccentric structure in a slide plate and guard rail base plate fastener system only provided with one gauge block, the gauge can be adjusted by changing the specification of the composite locating sleeve or rotating the composite locating sleeve by 180 degrees, the composite locating sleeve is of an integral structure, the upper part which plays a role of a cover plate and the lower part which plays a role of a buffer sleeve are designed into a whole, once the gauge needs to be adjusted, the integral replacement is needed, the maintenance cost of the turnout is increased, the composite locating sleeve does not have an anti-rotation function, and the turnout sleeper bolt rotates and has hidden danger of looseness under the high-speed turnout passing vibration of the train.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a fastening system for a ballastless turnout base plate with an adjustable track gauge.

The technical problem to be solved by the invention is realized by the following technical scheme: a rail gauge adjustable ballastless turnout base plate fastening system comprises an iron base plate, an elastic base plate, a heightening base plate and a turnout sleeper bolt, wherein the elastic base plate is arranged below the iron base plate; the method is characterized in that: two ends of the iron backing plate are respectively provided with a first long circular hole, and the first long circular holes are formed by connecting two semicircular holes which are oppositely arranged and have the same radius R0 through straight sections; two ends of the elastic backing plate are respectively provided with a second long circular hole, and the second long circular holes are formed by connecting two semicircular holes which are oppositely arranged and have the same radius R1 through straight sections; the two ends of the height-adjusting backing plate are respectively provided with a third long circular hole, and the third long circular holes are formed by connecting two semicircular holes which are oppositely arranged and have the same radius R2 through straight sections; the first long round hole corresponds to the upper and lower centers of the second long round hole and the third long round hole;

the first long round hole and the second long round hole are inserted with eccentric sleeves, and the outer diameters of the eccentric sleeves are formed by connecting two opposite semi-circles with the same radius R through straight sections; the eccentric value of the center of the circular inner hole of the eccentric sleeve and the center of the first long circular hole is e; an anti-rotation boss is arranged on the straight section at the upper end of the eccentric sleeve;

a cover plate is arranged above the eccentric sleeve, a through hole is formed in the center of the cover plate, rubber gaskets are arranged on two sides of the lower end face of the cover plate on two sides of the through hole, an anti-rotation groove matched with the anti-rotation boss is formed in the lower end face of the cover plate on two sides of the through hole, and the anti-rotation boss is embedded into the anti-rotation groove to form an anti-rotation function;

the switch tie bolt sequentially penetrates through the through hole in the center of the cover plate, the circular inner hole of the eccentric sleeve and the third long circular hole and then is fixed with the switch tie, and two ends of the iron base plate, the elastic base plate and the height-adjusting base plate are fixedly connected to the switch tie; and the eccentric sleeve is rotated by 180 degrees, so that the iron base plate transversely moves by an eccentric value e, and the track gauge is adjusted.

Furthermore, the eccentric sleeve is composed of a non-eccentric steel sleeve and an eccentric buffer sleeve coated on the outer wall of the non-eccentric steel sleeve, the outer diameter of the eccentric buffer sleeve is formed by connecting two semicircular sections which are oppositely arranged and have the same radius R through a straight section, the left or right eccentricity value of the center of the eccentric buffer sleeve is e, and the eccentricity value of the center of the circular inner hole of the non-eccentric steel sleeve and the center of the first long round hole is e.

The circular inner hole without the eccentric steel sleeve is of a step structure, and the inner diameter of the upper part of the circular inner hole is larger than that of the lower part of the circular inner hole.

The eccentric buffer sleeve is formed by vulcanizing glass fiber reinforced polyamide 66.

Preferably, the length of the straight section and the length of the straight section are all 2P; the eccentricity value e is less than or equal to P.

Preferably, the radius R0 is 0.5-1 mm larger than the radius R, the radius R1 is 1-2 mm larger than the radius R, and the radius R2 is 0.5-2 mm larger than the radius of the turnout sleeper bolt 4.

Preferably, grooves are formed in two sides of the lower end face of the cover plate, and the rubber gasket is embedded in the grooves.

Preferably, the dynamic and static rigidity ratio of the elastic base plate is less than 1.5; the rigidity of the rubber gasket is 2 kN/mm-5 kN/mm.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the invention, the eccentric sleeve can enable the base plate to play a role of adjusting the rail gauge of the steel rail through transverse movement, and the inner hole of the eccentric sleeve adopts a step structure, so that the action point height of the transverse force is reduced, the stress condition of the switch tie bolt can be improved, and the shearing risk is avoided or reduced; and the eccentric sleeve can ensure that the elastic base plate below the iron base plate is not in direct contact with the switch tie bolt, is not influenced by installation and fastening, and can always normally exert elasticity.

2. The anti-rotation device has the anti-rotation function through the matching of the eccentric sleeve and the cover plate, ensures the stability and the reliability of the base plate fastening system, avoids potential safety hazards of rotation and loosening of the switch tie bolt under the action of high-speed switch-passing vibration of a train, and reduces the workload of daily maintenance.

3. The eccentric sleeve and the cover plate adopt a split structure, only the eccentric sleeve needs to be replaced or rotated when the track gauge is adjusted, the cover plate can be repeatedly applied, and the manufacturing and maintenance cost is reduced.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the construction of the iron shim plate according to the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a front view of the cover plate structure of the present invention;

FIG. 5 is a top view of the cover plate structure of the present invention;

FIGS. 6 and 7 are sectional views showing the structure of the eccentric sleeve according to the present invention;

FIG. 8 is a top view of the eccentric sleeve according to the present invention;

FIG. 9 is a top view of the resilient pad of the present invention;

FIG. 10 is a top view of the raised pad of the present invention;

FIG. 11 is a schematic structural diagram of an embodiment of the present invention;

Detailed Description

The invention will be described in further detail below with reference to fig. 1 to 11 and specific examples, but the embodiments of the invention are not limited thereto.

Example 1: a rail gauge adjustable ballastless turnout base plate fastening system comprises an iron base plate 1, an elastic base plate 2, a heightening base plate 3 and a turnout sleeper bolt 4, wherein the elastic base plate 2 is arranged below the iron base plate 1, and the heightening base plate 3 is arranged below the elastic base plate 2; the upper end surface of the iron base plate 1 is provided with two iron seats 1-3, and a steel rail 9 is arranged between the two iron seats 1-3 through a gauge block 8, an elastic strip 10 and the like; the elastic backing plate 2 is consistent with or slightly larger than the iron backing plate 1 on the upper part of the elastic backing plate, the thickness of the elastic backing plate is 5-20 mm, the elastic backing plate is a main bearer for the elastic action of a fastener system and provides elasticity for a ballastless track, and the material of the elastic backing plate is ethylene propylene diene monomer foamed rubber or polyurethane; the height-adjusting cushion plate 3 is made of high-density polyethylene or rubber and is consistent with or slightly larger than the elastic cushion plate, and the thickness is set according to the application requirement of on-site height adjustment. According to the height adjustment requirement, the height adjustment of the turnout is realized by increasing, decreasing or replacing height adjustment base plates with different thicknesses.

Two ends of the iron base plate 1 are respectively provided with a first long round hole 1-1, and the first long round hole 1-1 is formed by connecting two semicircular holes which are oppositely arranged and have the same radius R0 through straight sections 1-2; two ends of the elastic backing plate 2 are respectively provided with a second long round hole 2-1, and the second long round hole 2-1 is formed by connecting two semicircular holes which are oppositely arranged and have the same radius R1 through a straight section 2-2; the two ends of the height-adjusting backing plate 3 are respectively provided with a third long round hole 3-1, and the third long round hole 3-1 is formed by connecting two semicircular holes which are oppositely arranged and have the same radius R2 through a straight section 3-2; the first long round hole 1-1 corresponds to the upper and lower centers of the second long round hole 2-1 and the third long round hole 3-1;

the eccentric sleeve 6 is inserted into the first long round hole 1-1 and the second long round hole 2-1, and the outer diameter of the eccentric sleeve 6 is formed by connecting two opposite semicircles with the same radius R through a straight section 6-1; the eccentric value of the center of the circular inner hole of the eccentric sleeve 6 and the center of the first long circular hole 1-1 is e; an anti-rotation boss 6-2 (arc or square) is formed on the straight section 6-1 at the upper end of the eccentric sleeve 6; the eccentric sleeve 6 is prevented from rotating by the fact that the eccentric sleeve 6 is matched with the first long round hole 1-1.

The cover plate 5 is arranged above the eccentric sleeve 6, the center of the cover plate 5 is provided with a through hole 5-1, two sides of the lower end face of the cover plate 5 are provided with grooves 5-4, rubber gaskets 5-2 are embedded in the grooves 5-4, the lower end face of the cover plate 5 on two sides of the through hole 5-1 is provided with anti-rotation grooves 5-3 matched with the anti-rotation bosses 6-2, the anti-rotation bosses 6-2 are embedded into the anti-rotation grooves 5-3 to have an anti-rotation function, the cover plate 5 is prevented from rotating randomly through the eccentric sleeve 6, so that the cover plate 5, the eccentric sleeve 6 and the turnout sleeper bolt 4 do not rotate and loosen in the assembling and application processes, the eccentric sleeve 6 is always kept at the designed position, the stability and the durability of the turnout sleeper bolt are improved, and the daily maintenance workload is reduced.

The cover plate 5 is provided with two rubber gaskets 5-2, elastic buffering and switch tie bolt 4 pre-tightening force uniform distribution are achieved, the smaller the pressure of the rubber gaskets 5-2 on the iron base plate 1 is, the better the pressure is, and rigidity design is adopted to ensure that the elastic base plate 2 below the iron base plate 1 is not compressed when the switch tie bolt is fastened, so that the system assembling rigidity is not influenced by the pre-tightening force of the switch tie bolt 4.

Preferably, the length of the straight section 1-2, the length of the straight section 2-2, the length of the straight section 3-2 and the length of the straight section 6-1 are all 2P, so that four parts, namely an iron base plate, an elastic base plate, a heightening base plate and an eccentric sleeve, which have the same adjustment amount in an assembly relationship have the same adjustment amount, and the attractive appearance after overlapping and assembling is ensured; the eccentric value e is smaller than or equal to P, the e value is the distance difference between the center of the straight section of the eccentric sleeve and the center of the bolt hole of the switch tie, namely the track gauge adjustment value, the iron base plate and the elastic base plate can transversely move leftwards or rightwards through the assembly of the iron base plate and the eccentric sleeve, the track gauge adjustment values at all positions are different during application, therefore, the eccentric sleeve is designed with the e values of different specifications, the maximum adjustment value P is designed according to the requirement of switch products on the track gauge adjustment values, and the eccentric value e changes within the range of the P value to meet the design requirements.

Preferably, radius R0 is 0.5 ~ 1mm bigger than radius R, radius R1 is 1 ~ 2mm bigger than radius R, radius R2 is 0.5 ~ 2mm bigger than the radius of switch tie bolt 4, ensures that iron tie plate and eccentric cover, elastic backing plate and eccentric cover, heighten tie plate and switch tie bolt have reasonable fit-up gap and firm interact (less fit-up gap) to conveniently assemble and adjust the gauge and guarantee gauge adjustment precision.

Preferably, the dynamic and static rigidity ratio of the elastic base plate 2 is less than 1.5, so that the design rigidity meets the dynamic rigidity requirement when the train passes through a turnout. The rigidity of the rubber gasket 5-2 is 2 kN/mm-5 kN/mm.

The switch tie bolt 4 is sleeved with the elastic washer 7, then sequentially penetrates through the center of the cover plate 5 and is provided with a through hole 5-1, a round inner hole of the eccentric sleeve 6 and a third long round hole 3-1, then is in threaded connection with a pre-buried sleeve in the switch tie, and the two ends of the iron base plate 1, the elastic base plate 2 and the height-adjusting base plate 3 are fixedly connected to the switch tie; the eccentric sleeve 6 is installed by rotating 180 degrees, so that the iron base plate 1 moves transversely by an eccentric value e, and the rail gauge adjustment amount is an e value.

Example 2: on the basis of the embodiment 1, the structure of the eccentric sleeve 6 is further optimized, namely the eccentric sleeve 6 is composed of an eccentric-free steel sleeve 6-3 and an eccentric buffer sleeve 6-4 coated on the outer wall of the eccentric-free steel sleeve 6-3, the outer diameter of the eccentric buffer sleeve 6-4 is formed by connecting two opposite semicircles with the same radius R through a straight section 6-1, the left or right eccentricity value of the center of the eccentric buffer sleeve 6-4 is e, and the eccentricity value of the center of the circular inner hole of the eccentric-free steel sleeve 6-3 and the center of the first long round hole 1-1 is further made to be e.

The circular inner hole of the non-eccentric steel sleeve 6-1 is of a step structure, and the inner diameter of the upper part is larger than that of the lower part. The height of the transverse force action point of the switch tie bolt 4 can be reduced, and the shearing risk of the switch tie bolt 4 is avoided or reduced.

Preferably, the eccentric buffer sleeve 6-2 is vulcanized by glass fiber reinforced polyamide 66. The nonmetal glass fiber reinforced polyamide 66 can play a role in elastic buffering and insulation between the iron backing plate 1 and the switch tie bolt 4.

The invention can transversely change the position of the base plate by rotating or replacing the specification of the eccentric sleeve on the premise that the position of the embedded sleeve in the switch tie is not changed, thereby playing a role in adjusting the rail gauge of the steel rail in the switch area; the axial fastening force of the switch tie bolt can be directly acted on the heightening base plate through the eccentric sleeve, so that the switch tie bolt is prevented from directly acting with the elastic base plate, the elastic base plate is guaranteed not to be compressed when the switch tie bolt is fastened, and the elasticity can be normally exerted when a train passes through; particularly, the eccentric sleeve is limited to rotate through a long circular hole in the iron base plate, the upper portion of the eccentric sleeve is provided with an arc-shaped or square anti-rotation boss, the rubber gasket compression amount of the cover plate is matched with the design height of H, h when the switch tie bolt is fastened, and the switch tie bolt is ensured to be capable of playing an anti-rotation role through the matching of the anti-rotation boss of the eccentric sleeve and the anti-rotation groove of the cover plate after being fastened, so that the cover plate, the eccentric sleeve and the switch tie bolt are not rotated and loosened in the assembling and application processes, the eccentric sleeve is always kept at the designed position, the stability and the durability of the switch tie bolt are improved, and the daily maintenance workload is also reduced.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.