CN215104304U

CN215104304U - Switch type elastic strip fastener system for urban railway

Info

Publication number: CN215104304U
Application number: CN202023236050.XU
Authority: CN
Inventors: 高晓刚; 王安斌; 刘浪; 徐忠辉
Original assignee: Shanghai University of Engineering Science
Current assignee: Shanghai University of Engineering Science
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-12-10
Anticipated expiration: 2030-12-28

Abstract

The utility model relates to a switched mode bullet strip fastener system for municipality's territory railway, including switched mode bullet strip (2), iron tie plate (3), coupling plate (4), rail lower bolster (5), anchor bolt (7), iron tie plate (3) are located between rail lower bolster (5) and coupling plate (4) to be fixed in on the sleeper through anchor bolt (7), iron tie plate (3) on set up butterfly bullet strip seat (301), switched mode bullet strip (2) including side limb (201) and middling pressure ring (203), side limb (201) and middling pressure ring (203) get into and final fixed rail (1) from butterfly bullet strip seat (301) outside both sides and centre of iron tie plate (3) respectively. Compared with the prior art, the utility model discloses the whole mounting height of system reduces, and long-pending reduction, and cost reduction, and the mounting structure and the dismouting position that the iron tie plate set up make bullet strip installation process and bullet strip seat between frictional force little, the fortune dimension process safety of fastener system is high-efficient, adaptable line speed 0 ~ 350 km/h.

Description

Switch type elastic strip fastener system for urban railway

Technical Field

The utility model relates to a track traffic technical field, concretely relates to switched mode bullet strip fastener system for urban railway.

Background

The urban railway is also called commuter railway and suburban railway, and refers to a passenger rail transit system in the range of a metropolitan area, which serves urban and suburban areas, a central city and a satellite city, key towns and the like, the service range is generally 50-100 kilometers, the distance between stations is short, the density is large, and the average station spacing is not less than 3 kilometers in principle. Urban rail transit belongs to the category of generalized urban rail transit, can enlarge the effective supply of traffic, optimize urban spatial layout, promotes novel urbanization construction, and urban railway will receive city government's attention more and more, plays bigger and bigger effect. Compared with the vigorous development of the national high-speed railway in the last decade, the urban railway technology starts late and progresses slowly in China, belongs to the exploration stage, and needs to develop an urban railway technology standard system which meets the national conditions of China on the basis of reference and absorption. The iron base plate, the elastic strip and other parts of the fastener system of the urban railway not only meet the functions of convenient installation, maintenance, safety and reliability, but also meet the special performance requirements of the urban railway such as running speed (80-350km/h) and load (13-17t) of the assembly system, and the existing vibration-damping fastener system only meets the requirement that the speed per hour is less than 80km/h in subway design and then the high-speed railway fastener is basically used at high speed. Due to the factors of prefabricated retaining shoulders, broken elastic strips, complex structure, high manufacturing cost and the like, the high-speed rail fastener is urgently needed to be researched and designed to adapt to the fastener system developed by urban railways.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an exactly be in order to develop the switch type bullet strip fastener system for the urban railway that adapts to the operation of urban railway, adopt switch type no bolt bullet strip to improve the efficiency that the fastener was installed and was maintained, set up bullet strip pre-assembled structure screens and installed a check out structure screens on the fastener iron backing plate simultaneously, improved the installation accuracy and the efficiency of fastener, reduced the influence of human factor to the circuit maintenance state, guaranteed the safe operation of circuit.

The purpose of the utility model can be realized through the following technical scheme: the utility model provides a switched mode bullet strip fastener system for municipality territory railway, includes switched mode bullet strip, iron tie plate, coupling plate, rail lower bolster, anchor bolt, the iron tie plate is located between rail lower bolster and the coupling plate to be fixed in on the sleeper through anchor bolt, the iron tie plate on set up butterfly bullet strip seat, switched mode bullet strip include side limb and well clamping ring, side limb and well clamping ring get into and final fixed rail from the butterfly bullet strip seat outside both sides and the centre of iron tie plate respectively.

The switch type elastic strip comprises an arc-shaped central ring, a middle compression ring and side limbs, wherein the middle compression ring is symmetrically arranged on two sides of the arc-shaped central ring, and the side limbs are connected with the middle compression ring.

The side limbs are provided with grooves.

The arc-shaped central ring is sleeved with an insulating nylon cap which is made of nonmetal materials, has insulating and pressure-resistant characteristics, and ensures that the switch type elastic strip is in contact insulation with the steel rail.

The side surface of the butterfly elastic strip seat of the iron base plate is provided with a groove for inserting and fixing the lateral limb, and the groove is obliquely arranged and comprises an elastic strip pre-assembling step positioned at the head part, a guide sliding groove in the middle and an in-place anti-loosening step at the tail part.

The switch type elastic strip is inserted into the groove from the elastic strip pre-assembly step and is buckled and fixed with the in-place anti-loosening step through a groove on a side limb of the switch type elastic strip;

in the pre-installation stage, the deformation of the groove at the upper end part of the side limb of the switch type elastic strip is reduced before the groove is contacted with the elastic strip pre-assembly step, and the pressure is low when the elastic strip is pre-installed; when the switch-type elastic strip is installed on the steel rail, the deformation of the end part of the elastic strip is increased relative to the BC section of the groove until the groove of the switch-type elastic strip is contacted with the in-place anti-loosening step end, but the average value of the friction force between the elastic strip and the groove is reduced in the whole process, and the friction relation between the elastic strip and the installation groove is improved.

And a gauge block is arranged between the butterfly elastic strip seat of the iron base plate and the steel rail, the gauge block is of an L-shaped structure, and the surface of the gauge block is provided with an adjusting gear shaping structure.

One side of the butterfly elastic strip seat is provided with a gauge block mounting concave boss for mounting the gauge block, and a gauge adjusting rack matched with the gauge block is further arranged.

The iron base plate is provided with a plurality of bolt mounting holes, and the anchoring bolts are arranged on the iron base plate in a staggered or symmetrical mode.

The two ends of the iron base plate are provided with extension sections, and the anchoring bolts are arranged on the extension sections to form in-line arrangement of the bolts.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the high system stability of fastener rigidity: the utility model is provided with a single-layer elastic cushion and a single-layer iron cushion structure under the rail, the vertical and transverse displacement is small, the system rigidity is large, and the fastener is suitable for the line speed of 0-300 km/h;

(2) the elastic strip seat is limited by preassembly and installation in place: the utility model discloses iron tie plate bullet strip seat is provided with bullet strip pre-assembling and installs the restriction structure that targets in place, and the on-off no bolt bullet strip installation of adoption is accurate and fortune dimension is convenient, has restricted human factor and moment of torsion size to the life-span influence of bullet strip.

Drawings

Fig. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;

fig. 2 is a schematic structural view of an elastic strip in embodiment 1 of the present invention;

fig. 3 is a schematic structural view of an iron backing plate according to embodiment 1 of the present invention;

fig. 4 is a schematic structural view of an elastic strip seat in embodiment 1 of the present invention;

fig. 5 is a schematic structural view of a gauge block according to embodiment 1 of the present invention;

fig. 6 is a schematic structural view of embodiment 2 of the present invention;

the reference numbers in the figures indicate: the device comprises a steel rail 1, a switch type elastic strip 2, a side limb 201, a groove 202, a middle pressure ring 203, an iron base plate 3, a butterfly elastic strip seat 301, a gauge block mounting concave boss 302, a gauge adjusting rack 303, a coupling plate 4, a rail lower base plate 5, a gauge block 6, an anchoring bolt 7 and a nylon cap 8.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Example 1

Referring to fig. 1-5, a switch type elastic strip fastener system for urban railways comprises a steel rail 1, a switch type elastic strip 2, an iron backing plate 3, a coupling plate 4, a rail lower backing plate 5, a gauge block 6, an anchor bolt 7 and an elastic strip insulating cap 8. The iron base plate 3 is positioned between the rail lower base plate 5 and the coupling plate 4 and is fixed on the sleeper through the anchor bolt 7.

As shown in fig. 2, the structure of the switch type elastic strip 2 comprises an arc-shaped central ring, a middle pressure ring 203 arranged symmetrically on two sides of the central ring, and side limbs 201 connected with the middle pressure ring 203. The lateral limb 201 is provided with a groove 202. The cover has insulating nylon cap 8 on the arc central ring, and nylon cap 8 is non-metallic material, has insulating and withstand voltage characteristic, guarantees that switch mode bullet strip and rail contact are insulating, and during the use, in the butterfly bullet strip seat 301 of side limb 201 insertion iron tie plate 3, arc central ring pressed on rail 1.

As shown in fig. 3, two butterfly elastic strip seats 301 and two bolt mounting holes are arranged at opposite corners of the iron backing plate 3. The butterfly elastic strip seat 301 is provided with a groove on the side for the lateral limb 201 to insert and fix, and as shown in fig. 4, the groove is obliquely arranged and comprises an elastic strip pre-assembly step 301A at the head (namely, an elastic strip pre-assembly structure), a guide chute 301B in the middle and a positioning anti-loose step 301C at the tail (namely, mounted to an anti-loose structure). The side limb 201 and the middle compression ring 203 of the switch type elastic strip 2 enter the iron base plate 3 from two sides and the middle of the outer side of the butterfly-shaped elastic strip seat respectively and finally fix the steel rail 1. Specifically, the switch type elastic strip 2 is inserted into the groove from the elastic strip preassembly step 301A and is buckled and fixed with the in-place anti-loosening step 301C through the groove 202 on the side limb 201 of the switch type elastic strip 2; in the pre-installation stage, the deformation of the end part of the switch type elastic strip 2 is reduced before the end part contacts with the elastic strip pre-assembly step 301A, and the pressure of the elastic strip during pre-installation is also reduced; when the switch type elastic strip 2 is installed on a steel rail, the deformation of the end part of the elastic strip is increased relative to the section BC of the groove (namely the middle sliding guide groove 301B and the in-place anti-loosening step 301C at the tail part) until the groove 202 of the switch type elastic strip 2 is contacted with the in-place anti-loosening step 301C end of the butterfly elastic strip seat 301, but the average friction force between the elastic strip and the groove is reduced in the whole process, and the friction relation between the elastic strip and the installation groove is improved.

As shown in fig. 5, the gauge block 6 is an L-shaped structure, and the surface thereof is provided with an adjusting gear shaping structure, that is, the surface of one side surface thereof is provided with a concave-convex structure, and the edge of the other side surface thereof is provided with a concave-convex structure, so as to form a gear shaping structure. The concave-convex surface of the steel wire rope can be interchanged, and the steel wire rope can be set to have different thicknesses to meet the requirements of track gauge adjustment of different lines.

One side of the butterfly elastic strip seat 301 is provided with a gauge block mounting concave boss 302 for mounting the gauge block 6, and is also provided with a gauge adjusting rack 303 matched with the gauge block 6. See fig. 3. The gauge blocks 6 are arranged between the steel rail 1 and the iron shim plate 3.

The iron base plate 3 is positioned between the rail lower base plate 5 and the coupling plate 4 and is fixed on the sleeper through the anchor bolt 7 and the adjusting gear shaping structure on the gauge block 6. The side limb 201 of the switch type elastic strip 2 enters from the outer side groove of the butterfly-shaped elastic strip seat 301 of the iron base plate 3, and the middle pressing ring 203 of the elastic strip enters from the middle of the butterfly seat 301 and finally fixes the steel rail 1.

The butterfly-shaped elastic strip seats 301 are symmetrically arranged on the iron base plate 3, and the anchor bolts 7 can be placed in four bolt mounting holes of the iron base plate 3 to form four-hole symmetrical arrangement of the bolts.

As the single-layer iron backing plate structure backing plate and the single-layer nylon coupling plate are arranged under the rail, compared with the multi-layer elastic plate of the existing urban rail transit fastener and the double-layer elastic layer structure of the high-speed rail shoulder-blocking fastener, the vertical and transverse displacement is greatly reduced, the rigidity of the fastener system is increased, and the requirements of the urban railway on high-speed driving stability of 0-350km/h and 14-20t of axle load can be met. Meanwhile, the quick plug-in limiting type elastic strip mounting structure of the fastener system is designed, so that the on-site installation and disassembly maintenance efficiency of the line is greatly improved.

Example 2

The embodiment 2 is basically the same as the embodiment 1 in structure and requirements, except that, as shown in fig. 6, the two ends of the iron backing plate 3 are provided with extension sections, the anchor bolts 7 are installed on the extension sections, and the positions of the anchor bolts 7 are changed from an offset type to an in-line type, so that the requirements of newly building a line and changing the positions of line nail holes are particularly met.

The above embodiments are only used for illustrating the technical solution of the present invention, and are not intended to limit the present invention, and those skilled in the art can make equivalent changes, substitutions, modifications, and simplifications within the scope of the present invention, without departing from the spirit of the present invention, and shall also fall within the protection scope of the claims of the present invention.

Claims

1. The utility model provides a switched mode bullet strip fastener system for city railway, its characterized in that, includes switched mode bullet strip (2), iron tie plate (3), coupling plate (4), rail lower plate (5), anchor bolt (7), iron tie plate (3) are located between rail lower plate (5) and coupling plate (4) to be fixed in on the sleeper through anchor bolt (7), iron tie plate (3) on set up butterfly bullet strip seat (301), switched mode bullet strip (2) including side limb (201) and well clamp ring (203), side limb (201) and well clamp ring (203) get into and final fixed rail (1) from butterfly bullet strip seat (301) outside both sides and centre of iron tie plate (3) respectively.

2. A switch type elastic strip fastener system for urban railways according to claim 1, characterized in that the switch type elastic strip (2) comprises an arc-shaped central ring, a middle compression ring (203) which is symmetrically arranged at two sides of the central ring, and side limbs (201) connected with the middle compression ring (203).

3. A switch type elastic strip fastener system for urban railways according to claim 1 or 2, characterized in that the side limbs (201) are provided with grooves (202).

4. The switch type elastic strip fastener system for the urban railways according to claim 2, wherein the arc-shaped central ring is sleeved with an insulating nylon cap (8), and the nylon cap (8) is made of a non-metal material.

5. A switch type elastic strip fastener system for urban railways according to claim 3, characterized in that the side of the butterfly elastic strip seat (301) of the iron backing plate (3) is provided with a groove for inserting and fixing the side limb (201), the groove is obliquely arranged and comprises an elastic strip preassembly step (301A) at the head, a guide chute (301B) in the middle and a locking step (301C) at the tail.

6. The switch type elastic strip fastener system for the urban railway according to claim 5, wherein the switch type elastic strip (2) is inserted into the groove from an elastic strip pre-assembly step (301A) and is buckled and fixed with the in-place anti-loosening step (301C) through a groove (202) on a side limb (201) of the switch type elastic strip (2);

in the pre-installation stage, the deformation of the groove (202) at the upper end of the side limb (201) of the switch type elastic strip (2) is reduced before the groove is contacted with an elastic strip pre-assembly step (301A), and the pressure is low when the elastic strip is pre-installed; when the switch type elastic strip (2) is installed on a steel rail, the deformation of the end part of the elastic strip is increased until the groove (202) of the switch type elastic strip (2) is contacted with the end of the in-place anti-loosening step (301C).

7. The switch type elastic strip fastener system for urban railways according to claim 1, characterized in that a gauge block (6) is arranged between the butterfly elastic strip seat (301) of the iron base plate (3) and the steel rail (1), the gauge block (6) is in an L-shaped structure, and the surface of the gauge block is provided with an adjusting gear shaping structure.

8. The switch type elastic strip fastener system for urban railways according to claim 7, wherein a track gauge block mounting concave-convex platform (302) for mounting the track gauge block (6) is arranged on one side of the butterfly elastic strip seat (301), and a track gauge adjusting rack (303) matched with the track gauge block (6) is further arranged.

9. The switch type elastic strip fastener system for the urban railways according to claim 1, wherein a plurality of bolt mounting holes are formed in the iron base plate (3), and the anchor bolts (7) are arranged on the iron base plate (3) in a staggered or symmetrical mode.

10. The switch type elastic strip fastener system for urban railways according to claim 1, wherein the iron backing plate (3) is provided with extension sections at two ends, and the anchor bolts (7) are arranged on the extension sections to form a bolt in-line arrangement.