CN214782933U

CN214782933U - Steel rail fastening device suitable for dovetail type rail bearing groove of railway crossing pavement

Info

Publication number: CN214782933U
Application number: CN202120894175.7U
Authority: CN
Inventors: 徐利君; 张晓昕; 丁玲; 杨峰
Original assignee: Shanghai Aojian Road Facility Technology Co ltd
Current assignee: Shanghai Aojian Road Facility Technology Co ltd
Priority date: 2021-04-27
Filing date: 2021-04-27
Publication date: 2021-11-19
Anticipated expiration: 2031-04-27

Abstract

The utility model provides a steel rail fastening device suitable for a dovetail rail-bearing groove of railway crossing pavement, relating to the technical field of railway crossing pavement; the steel rail fastening device comprises a steel base plate, a bolt and a nylon sleeve which is pre-embedded at the bottom of the rail bearing groove. The steel base plate comprises a steel base plate and an iron base, and the steel base plate and the iron base are integrally formed; the cross-section of bottom plate is trapezoidal, and the bottom surface and the side of bottom plate all adhere and have the cushion, and the cushion closely laminates with the bottom surface and two inclined planes in support rail groove, and it has corresponding through-hole to open on bottom plate and the cushion, and the bolt passes the through-hole and fixes bottom plate and cushion in the bottom surface in support rail groove. The utility model discloses a rail fastening device yawing force resists the ability reinforce, can effectually prevent that the gauge from expanding, and steel bolt and nylon external member make the dismouting in the narrow and small space in support rail groove more convenient, more easy to assemble and maintenance.

Description

Steel rail fastening device suitable for dovetail type rail bearing groove of railway crossing pavement

Technical Field

The utility model relates to a railway crossing shop front technical field especially relates to a rail fastener suitable for railway crossing shop front dovetail rail-bearing groove.

Background

Chinese patent application No. 200520044587.2 discloses an integral crossing deck which is an integral concrete building having dovetail-like rail-supporting channels.

The control of the track gauge on a railway line is an important technical point for railway safety management and train running safety guarantee all the time. The track gauge is a basic condition for ensuring the normal running of the train, and once the exceeding occurs, a major driving accident can be caused. Therefore, the gauge tie rod is additionally arranged on a general curve line, particularly a small-radius curve line, and the gauge tie rod is also additionally arranged on a straight line which is higher in grade and extremely high in speed, so that the gauge tie rod is an important measure for controlling the gauge. However, the crossing deck is designed to ensure smooth and consistent running of the cars and no space is provided between the rails for the tie rods. The control of the track gauge mainly depends on the encryption of bolt spikes for configuration reinforcement, so that the safety factor is improved.

Common rail fasteners; mainly constitute by bullet strip, gauge baffle and nylon backer, when the lateral extrusion force that reply curve line rail production, the centrifugal force of train caused the unilateral extrusion of wheel promptly, under the condition of not installing the gauge pull rod additional, made the unilateral atress of one of them rail, long time, caused the fastener not hard up and the plate washer stirs, caused the gauge to enlarge, made the circuit have huge safety risk. In addition, on high-grade lines and small-radius curve lines, track gauge tie rods are not added, and the track gauge tie rods are errors which do not conform to technical regulations (railway industry technical regulations, namely G marks). Moreover, even on a straight line, when the whole crossing pavement bears a train, the elastic fastener is required to bear the lateral punching of a car on a track rail when the car passes through the pavement, particularly a large car, the elastic fastener cannot completely and easily resist the long-term and repeated punching of car wheels on the rail, and the risk of track gauge expansion still exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a rail fastener suitable for railway crossing shop front dovetail rail supporting groove to solve above-mentioned technical problem.

In order to achieve the above object, a rail fastener suitable for railway crossing shop front dovetail rail supporting groove, install in the rail supporting groove, the rail supporting groove includes a bottom surface and two inclined planes that link to each other with the bottom, two inclined planes are about the central line symmetry of rail supporting groove, install the rail in the rail supporting groove, the rail is about the central line symmetry of rail supporting groove.

The steel rail fastening device comprises a steel base plate, a bolt and a nylon sleeve which is pre-embedded at the bottom of the rail bearing groove. The steel base plate comprises a steel base plate and an iron base, and the steel base plate and the iron base are integrally formed; the cross-section of bottom plate is trapezoidal, and the bottom surface and the side of bottom plate all adhere and have the cushion, and the cushion closely laminates with the bottom surface and two inclined planes in support rail groove, and it has corresponding through-hole to open on bottom plate and the cushion, and the bolt passes the through-hole and fixes bottom plate and cushion in the bottom surface in support rail groove.

Three-shaped elastic strips are arranged in the iron base and used for fixing the steel rail, and an insulating block is arranged between the three-shaped elastic strips and the steel rail.

Furthermore, there are two iron seats, and the two iron seats are arranged on two sides of the central line of the steel base plate in a diagonal manner. The number of the bolts is two, and the two bolts are arranged on two sides of the central line of the steel backing plate in a diagonal manner. The connecting line between the two iron seats and the connecting line between the two bolts are crossed.

Furthermore, there are three iron seats which are arranged on two sides of the central line of the steel base plate and are in a triangular shape. The number of the bolts is three, and the three bolts are arranged on two sides of the central line of the steel backing plate in a triangular mode. The triangle formed by the three iron seats and the triangle formed by the three bolts are in mirror symmetry with respect to the center line of the steel backing plate.

Furthermore, the bolt consists of a head part and a screw rod, and the screw rod consists of a thread section at the lower part, a transition section at the middle part and a cylindrical polished rod section at the upper part. The screw thread section is used for meshing with the nylon sleeve, the transition section is used for connecting the screw thread section and the polished rod section, and the polished rod section is tightly attached to the through hole of the steel bottom plate.

The head of the bolt is of a square inner tenon structure.

The contact surface of the rubber mat and the rail bearing groove is also provided with anti-skid stripes.

The steel base plate and the rubber pad are integrally embedded and fastened in the rail bearing groove, the steel rail cannot move back and forth in the rail bearing groove of the integral pavement slab, and the steel rail is fixed on the steel base plate, so that the gauge cannot be enlarged along with various external side rushing-out factors. The fastening bolt is of a special three-section structure, the polished rod section is tightly attached to the through hole of the steel base plate after installation, and the bottom of the rubber pad is provided with anti-slip stripes, so that the friction force between the rubber pad and the rail bearing groove is increased, and the steel base plate is further prevented from moving back and forth. The head of the bolt is of a square inner tenon structure, so that the bolt is more convenient to assemble and disassemble in a narrow space of the rail bearing groove.

Advantageous effects

The utility model discloses a rail fastening device yawing force resists the ability reinforce, can effectually prevent that the gauge from expanding, in the narrow and small space in support rail groove, the dismouting is more convenient to easy to assemble and maintenance more.

Drawings

Fig. 1 is a structural view of the rail fastening device of the present invention.

Fig. 2 is a top view of the steel base plate with two iron seat structures of the present invention.

Fig. 3 is a top view of the steel base plate with three iron seat structure of the present invention.

Fig. 4 is a structural diagram of the bolt of the present invention.

Fig. 5 shows a bolt head structure of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. As used herein, the word "comprising" and similar words are intended to mean that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. As shown in FIGS. 1-5;

the embodiment of the utility model provides a rail fastener suitable for railway crossing shop front dovetail rail supporting groove installs in rail supporting groove 1, and rail supporting groove 1 includes a bottom surface and two inclined planes that link to each other with the bottom, and two inclined planes are about the central line symmetry of rail supporting groove 1, install rail 2 in the rail supporting groove 1, and rail 2 is about the central line symmetry of rail supporting groove 1.

The steel rail fastening device comprises a steel backing plate 3, a bolt 4 and a nylon sleeve 5 pre-buried at the bottom of the rail bearing groove 1. The steel backing plate 3 comprises a steel bottom plate 31 and an iron seat 32, and the steel bottom plate 31 and the iron seat 32 are integrally formed; the cross-section of bottom plate 31 is trapezoidal, and the bottom surface and the side of bottom plate 31 all adhere and have cushion 6, and cushion 6 closely laminates with the bottom surface and two inclined planes of support rail groove 1, and it has corresponding through-hole to open on bottom plate 31 and the cushion 6, and bolt 4 passes the through-hole and fixes bottom plate 3 and cushion 6 in the bottom surface of support rail groove 1.

The three-shaped elastic strip 7 is arranged in the iron seat 32, the three-shaped elastic strip 7 is used for fixing the steel rail 2, and the iron seat 32 and the three-shaped elastic strip 7 are used for fixing the steel rail 2 and belong to the prior art in the field, and are not described herein again. An insulating block 8 is arranged between the three-shaped elastic strip and the steel rail.

As shown in fig. 2, there are two iron seats 32, and the two iron seats 32 are arranged on both sides of the center line of the steel shim plate 3 and are arranged diagonally. The number of the bolts 4 is two, and the two bolts 4 are arranged on two sides of the central line of the steel backing plate 3 in a diagonal manner. The connecting line between the two iron seats 32 and the connecting line between the two bolts 4 cross each other.

As shown in fig. 3, there are three iron seats 32, and the three iron seats 32 are arranged on two sides of the center line of the steel shim plate 3 and are triangular. The number of the bolts 4 is three, and the three bolts 4 are arranged on two sides of the central line of the steel backing plate 3 in a triangular mode. The triangle formed by the three iron seats 32 and the triangle formed by the three bolts 4 are mirror images of the center line of the steel shim plate 3.

The fixing mode of three bolts is more firm than the fixing of two bolts, and the front and back play is difficult to realize.

The bolt 4 consists of a head 41 and a screw consisting of a lower threaded section 42, a middle transition section 43 and an upper cylindrical polished rod section 44. The threaded section 42 is used for being meshed with the nylon sleeve 5, the transition section 43 is used for connecting the threaded section 42 and the polish rod section 44, and the polish rod section 44 is tightly attached to the through hole of the steel bottom plate 31.

The head 41 of the bolt 4 is of a square tenon structure.

The contact surface of the rubber pad 6 and the rail bearing groove 1 is also provided with anti-skid stripes.

The rubber mat is fixed on the steel base plate in an adhesion mode, is embedded in the rail bearing groove as a whole, increases friction force in a mode of arranging anti-skidding stripes, prevents the steel base plate from moving back and forth, further limits the steel base plate from moving back and forth through specially-made bolts, and therefore the technical effect of preventing the gauge from being enlarged can be achieved. In order to facilitate the disassembly and assembly, the head of the bolt is designed into a square inner tenon structure.

Although the embodiments of the present invention have been described in detail hereinabove, it is apparent to those skilled in the art that various modifications and variations can be made to these embodiments. However, it is to be understood that such modifications and variations are within the scope and spirit of the present invention as set forth in the appended claims. Moreover, the invention as described herein is capable of other embodiments and of being practiced or of being carried out in various ways.

Claims

1. A rail fastening device suitable for dovetail rail-bearing groove of pavement of railway crossing is installed in the rail-bearing groove, the rail-bearing groove includes a bottom surface and two inclined planes connected with the bottom, the two inclined planes are symmetrical about the central line of the rail-bearing groove, the rail is installed in the rail-bearing groove, the rail is symmetrical about the central line of the rail-bearing groove; it is characterized in that the preparation method is characterized in that,

the steel rail fastening device comprises a steel base plate, a bolt and a nylon sleeve which is pre-embedded at the bottom of the rail bearing groove; the steel base plate comprises a steel base plate and an iron base, and the steel base plate and the iron base are integrally formed; the cross section of the steel bottom plate is trapezoidal, rubber pads are adhered to the bottom surface and the side surfaces of the steel bottom plate, the rubber pads are tightly attached to the bottom surface and the two inclined surfaces of the rail bearing groove, corresponding through holes are formed in the steel bottom plate and the rubber pads, and bolts penetrate through the through holes to fix the steel bottom plate and the rubber pads on the bottom surface of the rail bearing groove; the iron seat is internally provided with a three-type elastic strip.

2. A rail fastening system for a dovetail rail receiving groove in a railroad grade crossing deck according to claim 1, wherein an insulating block is provided between the three-type resilient strip and the rail.

3. The apparatus as claimed in claim 2, wherein there are two iron seats disposed diagonally on opposite sides of the center line of the steel plate; the two bolts are arranged on two sides of the central line of the steel backing plate in a diagonal manner; the connecting line between the two iron seats and the connecting line between the two bolts are crossed.

4. The apparatus as claimed in claim 2, wherein there are three iron seats disposed at both sides of the center line of the steel plate and in a triangular shape; the number of the bolts is three, and the three bolts are arranged on two sides of the central line of the steel backing plate in a triangular manner; the triangle formed by the three iron seats and the triangle formed by the three bolts are in mirror symmetry with respect to the center line of the steel backing plate.

5. A rail fastening system for a dovetail rail-supporting channel in the pavement of a railroad grade crossing as claimed in claim 3 or 4, wherein the bolt is composed of a head and a shank, the shank being composed of a lower threaded section, a middle transition section and an upper cylindrical polished rod section.

6. A rail fastening system for a dovetail rail channel in the decking of a railroad grade crossing as claimed in claim 5, wherein the cylindrical lightbar section is closely received in the bore.

7. A rail fastening system for use in a dovetail rail-receiving channel in a pavement of a railroad grade crossing as claimed in claim 6, wherein the head of the bolt is of a square rebate configuration.

8. The apparatus as claimed in claim 7, wherein the rubber pad has anti-slip strips on the contact surface with the rail grooves.