CN212247684U

CN212247684U - Damping fastener for urban rail transit

Info

Publication number: CN212247684U
Application number: CN202021680236.1U
Authority: CN
Inventors: 汤啸; 朱世岳; 侯亮; 陈湘
Original assignee: Fu Shi Kou Railway Equipment Zhejiang Co ltd
Current assignee: Fu Shi Kou Railway Equipment Zhejiang Co ltd
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2020-12-29
Anticipated expiration: 2030-08-12

Abstract

The utility model belongs to the technical field of the track traffic, refer in particular to a damping fastener for urban rail transit, including being used for withholding two elastic strips of rail, setting up at the anchor bolt of rail both sides and set gradually iron tie plate, elastic backing plate and the base plate between rail and sleeper, the anchor bolt passes iron tie plate, elastic backing plate and base plate in proper order and sets up the bushing in the sleeper, the cover is equipped with nestedly on the anchor bolt of base plate top, the upper surface of nested lower surface inconsistent, the upper surface height iron tie plate of base plate with the upper surface of base plate, the cover is pressed on to be equipped with the apron of suit on the anchor bolt, be equipped with the nonmetal elastic washer of more than one pressure establishment at iron tie plate upper surface on the apron. The utility model discloses can effectively reduce the rail vibration, reduce the noise, guarantee the track ride comfort when the train passes through, avoid shaking the emergence of car phenomenon.

Description

Damping fastener for urban rail transit

The technical field is as follows:

the utility model belongs to the technical field of the track traffic, refer in particular to a damping fastener for urban rail transit.

Background art:

in the process of promoting the urbanization development, in order to solve the increasingly serious urban public traffic problem, China starts to vigorously develop urban rail transit taking subways as main structural styles. The fastener system is the important component part of whole track system, and urban rail transit's route planning and design are gone on according to the prediction result to the passenger flow volume, must can pass through densely populated region and some important units, the condition such as crossing building structure, ancient building foundation can even appear sometimes, however line vibration and noise problem are more outstanding, both can reduce the riding comfort level, can reduce the life of various spare parts of vehicle, also can influence the work of railway resident along the line simultaneously, quality of life and various equipment, the life of building.

Usually, the fastener system can set up the elastic backing plate between rail and sleeper, and the elasticity through the elastic backing plate is damped the vibration and is fallen and make an uproar, nevertheless when the elastic backing plate loses elasticity, the train easily appears shaking the car phenomenon, and the rail vibration is big, and the noise is serious.

The invention content is as follows:

the utility model aims at providing a damping fastener is used in urban rail transit, it can effectively reduce the rail vibration, and the track ride comfort when guaranteeing the train and passing through avoids shaking the emergence of car phenomenon.

The utility model discloses a realize like this:

the utility model provides a damping fastener for urban rail transit, is including two bullet strips, the anchor bolt of setting in the rail both sides that are used for withholding the rail and set gradually iron tie plate, elastic backing plate and the base plate between rail and sleeper, and the anchor bolt passes iron tie plate, elastic backing plate and base plate in proper order and sets up the bushing in the sleeper, the cover is equipped with nestedly on the anchor bolt of base plate top, the upper surface of nested lower surface and base plate offsets and touch, the upper surface exceeds the upper surface of iron tie plate, the cover is pushed upward and is equipped with the apron of suit on the anchor bolt, be equipped with the nonmetal elastic washer that more than one was pressed and is established at iron tie plate upper surface on the apron.

In the vibration damping fastener for urban rail transit, the iron base plate is provided with two bosses for transversely limiting the steel rail, and the buffer distance adjusting block for adjusting the rail distance is arranged in the nest.

In the damping fastener for urban rail transit, the buffering distance adjusting block is sleeved on the anchoring bolt, and the matching surface of the buffering distance adjusting block and the nesting is an elliptic cylindrical surface. The matching surfaces of the buffer distance adjusting block and the nest can also be parabolic cylinders, the side surfaces of triangular prisms and the side surfaces of pentagonal prisms.

In the damping fastener for urban rail transit, the matching surface of the iron base plate and the nesting is a straight cylindrical surface, the iron base plate is provided with a limiting groove, and the nesting is provided with a limiting bulge matched with the limiting groove.

In the vibration reduction fastener for urban rail transit, the upper surface of the buffering distance adjusting block is abutted against the lower surface of the cover plate, and the lower surface of the buffering distance adjusting block is abutted against the upper surface of the base plate.

In the damping fastener for urban rail transit, the boss is provided with the T-shaped bolt, and the T-shaped bolt penetrates through the elastic strip and the flat washer to be connected with the nut in a threaded manner.

In the vibration-damping fastener for urban rail transit, the rail lower backing plate is arranged between the steel rail and the iron backing plate, the rail lower backing plate is arranged between the two bosses, and the rail lower backing plate is made of insulating materials.

In the damping fastener for urban rail transit, the nesting comprises a metal part sleeved on the anchoring bolt and a non-metal part sleeved at the upper end of the metal part, and the lower surface of the non-metal part is lower than that of the iron base plate.

In the damping fastener for urban rail transit, the lower end of the cover plate is provided with more than one groove, and the nonmetal elastic washer is clamped in the groove.

In the damping fastener for urban rail transit, the number of the grooves is two, and the grooves are longitudinally and symmetrically arranged on two sides of the anchor bolt.

In the damping fastener for urban rail transit, the spring washer sleeved on the anchor bolt is arranged above the cover plate.

In the vibration reduction fastener for urban rail transit, the elastic base plate is made of a low-rigidity nonmetal elastic material, the metal component is made of a high-strength metal material, and the base plate, the sleeve, the buffering distance adjusting block and the nonmetal component are made of insulating materials.

Compared with the prior art, the utility model outstanding advantage is:

1. when the elastic backing plate loses elasticity, the gap between the elastic compensation iron backing plate and the elastic backing plate of the nonmetal elastic gasket prevents the empty hanging phenomenon between the iron backing plate and the elastic backing plate, can ensure the track smoothness when a train passes through, avoids the occurrence of the shaking phenomenon, effectively reduces the vibration of the steel rail and reduces the noise;

2. the utility model has the advantages that the larger friction force is generated between the metal component and the base plate to reduce the shearing force of the anchor bolt due to the transverse and longitudinal loads of the steel rail, so that the anchor bolt is protected to a certain extent, the service life of the anchor bolt is prolonged, and the maintenance cost is reduced;

3. the utility model realizes the track gauge adjustment through the buffer gauge adjusting block, has large adjusting range and strong track gauge keeping capability, and improves the stability of the fastener system;

4. the utility model discloses the fastener can be assembled into whole fastener through anchor bolt and sheathed tube spiral shell, can assemble in advance before the track construction, with the whole sleeve pipe installation of fastener on the sleeper. In the pre-assembly mode, the interior of the fastener is tightly assembled, so that sundries such as concrete and the like are effectively prevented from entering the interior of a fastener system when a sleeper is manufactured or cast-in-place, and the efficiency and the precision of the construction process are greatly improved;

5. the utility model discloses an elastic backing plate, base plate, sleeve pipe, non-metallic member, buffering roll adjustment piece and rail lower bolster are insulating material, the utility model discloses metal parts is few, can improve corrosion resisting property, insulating properties, stability can and the installation effectiveness of fastener, effectively reduces the maintenance work of bringing because of insulating and corrosion problem among the operation process.

Description of the drawings:

fig. 1 is a half sectional view of the present invention;

fig. 2 is a perspective view of the present invention;

fig. 3 is a top view of the present invention;

FIG. 4 is a perspective view of the assembly of the iron backing plate, the elastic backing plate, the base plate, the nesting, the buffering distance-adjusting block and the under-rail backing plate of the present invention;

FIG. 5 is a perspective view of the iron backing plate of the present invention;

fig. 6 is a perspective view of the cover plate and the non-metallic elastic washer of the present invention;

fig. 7 is a cross-sectional view of the cover plate and non-metallic resilient gasket of the present invention;

fig. 8 is a perspective view of a nest of the present invention;

fig. 9 is a top view of a nest of the present invention;

fig. 10 is a perspective view of the buffering distance adjusting block of the present invention.

Reference numerals: 1. a steel rail; 2. a sleeper; 3. an iron backing plate; 3a, a boss; 3b, limiting grooves; 4. an elastic backing plate; 5. a substrate; 6. a spring bar; 7. an anchor bolt; 8. a sleeve; 9. nesting; 9a, a limiting bulge; 9b, a metal member; 9c, non-metallic components; 10. a cover plate; 10a, a groove; 11. a non-metallic elastomeric gasket; 12. a buffer distance adjusting block; 13. a spring washer; 14. a T-bolt; 15. a flat washer; 16. a nut; 17. and a rail lower backing plate.

The specific implementation mode is as follows:

the invention will now be further described with reference to specific embodiments, with reference to figures 1 to 10:

the utility model provides a damping fastener for urban rail transit, is including two bullet strips 6, the anchor bolt 7 of setting in 1 both sides of rail that are used for withholding rail 1 and set gradually iron tie plate 3, elastic backing plate 4 and the base plate 5 between rail 1 and sleeper 2, anchor bolt 7 passes iron tie plate 3, elastic backing plate 4 and base plate 5 in proper order and is connected with the sleeve pipe 8 that sets up in sleeper 2, the cover is equipped with nested 9 on the anchor bolt 7 of base plate 5 top, the lower surface of nested 9 is inconsistent with the upper surface of base plate 5, the upper surface exceeds the upper surface of iron tie plate 3, nested 9 is pushed up and is equipped with the apron 10 of suit on anchor bolt 7, be equipped with more than one on the apron 10 and press the nonmetal elastic washer 11 of establishing at iron tie plate 3 upper surface.

The utility model discloses use the length direction of rail 1 to be vertical to the width direction of rail 1 is horizontal.

As shown in fig. 1 and 2, iron tie plate 3, elastic backing plate 4 and base plate 5 pass through anchor bolt 7 to be fixed on sleeper 2, and anchor bolt 7 fixes apron 10, nested 9 on base plate 5 simultaneously, the utility model discloses the fastener can be assembled into whole fastener through anchor bolt 7 and sleeve pipe 8's spiral shell link, can assemble in advance before the track construction, installs sleeve pipe 8 on sleeper 2 can accomplish during the construction the utility model discloses install on sleeper 2, rethread bullet strip 6 withholds rail 1, can accomplish the installation of rail 1. The utility model discloses the mode of pre-assembly, inside closely assembling of fastener effectively prevent that debris such as concrete from getting into inside the fastener system when making sleeper 2 or carrying out the cast-in-place, improve the efficiency and the precision of work progress greatly. The utility model discloses also can assemble through traditional mode, earlier with sleeve pipe 8 pre-buried in sleeper 2, mounting substrate 5, elastic backing plate 4, iron backing plate 3, nested 9, apron 10 in proper order again, it is fixed even through

anchor screw

7 and 8 spiral shell of sleeve pipe at last.

As shown in fig. 2, the utility model discloses when the elastic backing plate 4 loses elasticity, the clearance between the elastic compensation iron tie plate 3 of non-metallic elastic washer 11 and the elastic backing plate 4 prevents to appear empty hanging phenomenon between iron tie plate 3 and the elastic backing plate 4, and track ride comfort when can guaranteeing the train to pass through avoids shaking the emergence of car phenomenon, effectively reduces the rail vibration, the noise abatement.

As shown in fig. 1, 4 and 5, two bosses 3a for laterally limiting the steel rail 1 are further provided on the iron backing plate 3, and a buffer distance adjusting block 12 for adjusting the track distance is provided in the nest 9. The steel rail 1 is arranged between the two bosses 3a, the position of the anchor bolt 7 is fixed, and the transverse position of the iron base plate 3 relative to the anchor bolt 7 is adjusted by adjusting the buffering distance-adjusting block 12, so that the transverse positions of the two bosses 3a are adjusted, and further the transverse position of the steel rail 1 is adjusted, namely the purpose of adjusting the track gauge is achieved. The track gauge adjustment is realized through the buffer gauge adjusting block 12, the adjustment range is large, the track gauge holding capacity is strong, and the stability of the fastener system is improved.

The structure and installation mode of the buffering distance adjusting block 12 can be as follows: the buffering distance adjusting block 12 is a left buffering distance adjusting block and a right buffering distance adjusting block which are respectively arranged at the left side and the right side of the anchor bolt 7, and the transverse position of the iron base plate 3 relative to the anchor bolt 7 is adjusted by adjusting the thickness of the left buffering distance adjusting block and the right buffering distance adjusting block.

The structure and the installation mode of the buffering distance adjusting block 12 can also be as follows: as shown in fig. 1 and 4, the buffering distance adjusting block 12 is sleeved on the anchor bolt 7, and the matching surfaces of the buffering distance adjusting block 12 and the nest 9 are elliptic cylindrical surfaces. The transverse position of the iron backing plate 3 relative to the anchor bolt 7 is adjusted by adjusting the thickness of the buffer distance-adjusting block 12 at the left side and the right side of the anchor bolt 7. As shown in fig. 4, 8, 9 and 10, the matching surface of the buffer distance adjusting block 12 and the nesting 9 is an elliptical cylindrical surface, so that the buffer distance adjusting block 12 is prevented from rotating in the nesting 9, the adjustment of the track gauge is influenced, and the nested 9 is prevented from rotating in the running process of the train so as to drive the change of the track gauge. The mating surfaces of the damping spacer 12 and the nest 9 can also be parabolic cylinders, the sides of triangular prisms, the sides of pentagonal prisms. In this embodiment, the buffering distance adjusting block 12 is sleeved on the anchor bolt 7, and the matching surfaces of the buffering distance adjusting block 12 and the nest 9 are elliptic cylindrical surfaces.

Mounting structure of the iron backing plate 3 and the nest 9: as shown in fig. 4, 5, 8 and 9, the matching surface of the iron shim plate 3 and the nest 9 is a straight cylindrical surface, the iron shim plate 3 is provided with a limiting groove 3b, and the nest 9 is provided with a limiting protrusion 9a matched with the limiting groove 3 b. The limiting groove 3b is matched with the limiting protrusion 9a, so that the phenomenon that the track gauge is changed due to the rotation of the embedded sleeve 9 in the running process of the train is avoided, and meanwhile, the assembly is convenient.

The mounting structure of the iron tie plate 3 and the nest 9 can also be: the matching surfaces of the iron base plate 3 and the nesting 9 are the side surfaces of an elliptic cylindrical surface, a parabolic cylindrical surface, a triangular prism and a pentagonal prism, so that the nesting 9 is prevented from rotating in the running process of the train.

In order to prevent the distance adjusting block from moving in the vertical direction and simultaneously play a role of supporting the cover plate 10, the upper surface of the buffering distance adjusting block 12 is abutted against the lower surface of the cover plate 10 and the lower surface is abutted against the upper surface of the base plate 5.

Furthermore, a rail lower backing plate 17 is arranged between the steel rail 1 and the iron backing plate 3, the rail lower backing plate 17 is arranged between the two bosses 3a, and the rail lower backing plate is made of insulating materials. The under-rail pad effectively separates the steel rail 1 and the iron pad 3 and plays a role in insulation.

As shown in fig. 1 and 3, the installation mode of buckling the steel rail 1 by the elastic strip 6 is as follows: the boss 3a is provided with a T-shaped bolt 14, and the T-shaped bolt 14 penetrates through the elastic strip 6 and the flat washer 15 to be screwed with the nut 16. The elastic strips 6 are respectively pressed on the steel rail 1 and the iron base plate 3, namely the steel rail 1 is buckled on the iron base plate 3.

As shown in fig. 1, 4, 8, 9, the structure of the nest 9: the nesting 9 comprises a metal part 9b sleeved on the anchor bolt 7 and a non-metal part 9c sleeved on the upper end of the metal part 9b, and the lower surface of the non-metal part 9c is lower than the lower surface of the iron backing plate 3. In this embodiment, the metal member 9b is made of a high-strength metal material, and a large friction force is generated between the metal member 9b and the substrate 5 to reduce the shearing force of the anchor bolt 7 due to the transverse and longitudinal loads of the rail 1, thereby protecting the anchor bolt 7 to a certain extent, prolonging the service life of the anchor bolt 7, and reducing the maintenance cost. The non-metal part 9c is made of an insulating material, the lower surface of the non-metal part 9c is lower than the lower surface of the iron base plate 3, the metal part 9b is separated from the iron base plate 3, the insulating effect is achieved, and meanwhile metal friction damage between the metal part 9b and the iron base plate 3 is effectively prevented. The abrasion of parts is small, and the track gauge expansion amount is obviously reduced.

As shown in fig. 6 and 7, the mounting structure of the nonmetallic elastic washer 11: the lower end of the cover plate 10 is provided with more than one groove 10a, and the nonmetal elastic washer 11 is clamped in the groove 10 a.

Furthermore, two grooves 10a may be provided, and are symmetrically provided on both sides of the anchor bolt 7 in the transverse direction. The grooves 10a may also be provided in three, evenly distributed around the anchor bolt 7. Preferably, as shown in fig. 2, 6 and 7, two grooves 10a are provided, and are longitudinally and symmetrically arranged on two sides of the anchor bolt 7, and the non-metal elastic washer 11 is symmetrically pressed on the iron base plate 3, so as to better compensate the gap between the iron base plate 3 and the elastic base plate 4.

The material of the non-metal elastic washer 11 may be rubber or polyurethane. In the present embodiment, the non-metallic elastic washer 11 is a rubber washer.

In order to prevent the anchor bolt 7 from loosening and protect the upper surface of the cover plate 10 from being scratched by the head of the anchor bolt 7, a spring washer 13 is provided above the cover plate 10 to be fitted over the anchor bolt 7. In the present embodiment, the spring washer 13 is a heavy duty spring washer.

Preferably, the elastic base plate 4 is made of a low-rigidity nonmetal elastic material, so that the whole fastener system has a low-rigidity characteristic, when the steel rail 1 is impacted by a train, the iron base plate 3 extrudes the elastic base plate 4 to generate large elastic deformation, the vibration reduction effect of large impact on the train is realized, and the requirements of vibration reduction and noise reduction can be met. Meanwhile, the static rigidity retention rate of the elastic backing plate 4 in field application is good, and the phenomenon that the fastener loses the original vibration damping performance after long-term use is avoided.

Furthermore, the base plate 5, the sleeve 8 and the buffering distance adjusting block 12 are all made of insulating materials. The utility model discloses elastic backing plate 4, base plate 5, sleeve pipe 8, non-metallic member 9c, buffering roll adjustment piece 12 and rail lower bolster 17 are insulating material, the utility model discloses metal parts is few, can improve the corrosion resisting property, insulating properties, stability can and the installation effectiveness of fastener, effectively reduces the maintenance work of bringing because of insulating and corrosion problem among the operation process.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a damping fastener for urban rail transit, including two bullet strips (6) that are used for withholding rail (1), set up anchor bolt (7) in rail (1) both sides, and set gradually iron tie plate (3) between rail (1) and sleeper (2), elastic tie plate (4) and base plate (5), anchor bolt (7) pass iron tie plate (3) in proper order, elastic tie plate (4) and base plate (5) are connected with sleeve pipe (8) that set up in sleeper (2), its characterized in that: the anchor bolt (7) of base plate (5) top is gone up the cover and is equipped with nested (9), the lower surface of nested (9) is inconsistent with the upper surface of base plate (5), the upper surface is higher than the upper surface of casting backing plate (3), nested (9) are gone up the pressure and are equipped with apron (10) of suit on anchor bolt (7), be equipped with more than one on apron (10) and press nonmetal elastic washer (11) of establishing at iron backing plate (3) upper surface.

2. The vibration damping fastener for urban rail transit according to claim 1, wherein: the iron base plate (3) is provided with two bosses (3a) for transversely limiting the steel rail (1), and the nesting (9) is internally provided with a buffer distance adjusting block (12) for adjusting the rail distance.

3. The vibration damping fastener for urban rail transit according to claim 2, wherein: the buffer distance adjusting block (12) is sleeved on the anchoring bolt (7), and the matching surfaces of the buffer distance adjusting block (12) and the nesting sleeve (9) are elliptic cylindrical surfaces.

4. The vibration damping fastener for urban rail transit according to claim 2, wherein: the iron base plate is characterized in that the matching surface of the iron base plate (3) and the nesting (9) is a straight cylindrical surface, a limiting groove (3b) is formed in the iron base plate (3), and a limiting protrusion (9a) matched with the limiting groove (3b) is formed in the nesting (9).

5. The vibration damping fastener for urban rail transit according to claim 2, wherein: the upper surface of the buffering distance adjusting block (12) is abutted against the lower surface of the cover plate (10), and the lower surface of the buffering distance adjusting block is abutted against the upper surface of the base plate (5).

6. The vibration damping fastener for urban rail transit according to claim 1, wherein: the nesting (9) comprises a metal part (9b) sleeved on the anchoring bolt (7) and a non-metal part (9c) sleeved at the upper end of the metal part (9b), and the lower surface of the non-metal part (9c) is lower than that of the iron base plate (3).

7. The vibration damping fastener for urban rail transit according to claim 1, wherein: the lower end of the cover plate (10) is provided with more than one groove (10a), and the nonmetal elastic gasket (11) is clamped in the groove (10 a).

8. The vibration damping fastener for urban rail transit according to claim 7, wherein: the number of the grooves (10a) is two, and the grooves are longitudinally and symmetrically arranged on two sides of the anchor bolt (7).

9. The vibration damping fastener for urban rail transit according to claim 1, wherein: and a spring washer (13) sleeved on the anchor bolt (7) is arranged above the cover plate (10).

10. The vibration damping fastener for urban rail transit according to claim 6, wherein: the elastic backing plate (4) is made of a low-rigidity nonmetal elastic material, the metal component (9b) is made of a high-strength metal material, and the base plate (5), the sleeve (8), the buffering distance adjusting block (12) and the nonmetal component (9c) are made of insulating materials.