CN218596771U

CN218596771U - Fastener system suitable for heavy-duty railway

Info

Publication number: CN218596771U
Application number: CN202222867616.1U
Authority: CN
Inventors: 肖童金; 宋川; 侯亮; 杨灶鑫; 陶波; 廖忠棋; 胡华勇; 周阳; 周祥春
Original assignee: China Railway Longchang Materials Co Ltd
Current assignee: China Railway Longchang Materials Co Ltd
Priority date: 2022-10-27
Filing date: 2022-10-27
Publication date: 2023-03-10
Anticipated expiration: 2032-10-27

Abstract

The utility model discloses a fastener system suitable for 35 ~ 45 ton heavy haul railway, including sleeper and pre-buried sleeve pipe in the sleeper, lay the rail lower bolster on the rail bearing face of sleeper, lay the rail in rail lower bolster top, install the gauge baffle in rail foot both sides, the medial surface and the cooperation of rail foot flank of gauge baffle place the bullet strip on the gauge baffle, the toe end withhold of bullet strip is on the rail, place the plain washer on the limb in the bullet strip, the spiral spike passes in the plain washer and the bullet strip limb and screw in pre-buried sleeve pipe. Compared with the prior art, the utility model has the positive effects that: the utility model discloses an adjustment of position about the fastener rail can be realized to the gauge baffle of installing different models, and the anti transverse load performance demand under 35 ~ 45 ton gross rail load on axle condition can be satisfied in cooperation sleeper fender shoulder. The utility model discloses a fastener system spare part quantity still less, and the cost is lower, and fastener system overall structure is more compact stable.

Description

Fastener system suitable for heavy-duty railway

Technical Field

The utility model relates to a fastener system suitable for 35 ~ 45 ton heavy haul railway.

Background

The heavy haul railway is a railway freight system for carrying the gross weight and the axle weight of bulk cargos, and is rapidly developed in various countries in the world due to the advantages of large transportation energy, high efficiency, low cost and the like.

The fastener is used for realizing the reliable connection of the steel rail and the sleeper, preventing the steel rail from generating longitudinal or transverse displacement relative to the sleeper, preventing the steel rail from overturning, ensuring the normal gauge and providing necessary insulation and elasticity.

Along with the continuous improvement of heavy haul railway gross rail load on axle, the structure to the fastener system, intensity, life-span, stability, ageing resistance have proposed higher requirement, domestic heavy haul railway at present adopts a most fastener system mainly by bullet strip, T type bolt, flat washer, nut, gauge block, rail lower bolster and pre-buried iron seat constitute, this fastener system does not establish the gauge baffle, but realizes the adjustment to the rail gauge through the gauge block of changing different models, with the simplification fastener structure, practice thrift the cost. However, the outer side of the upper section of the embedded iron seat of the fastener system is not transversely supported, and when the embedded iron seat bears the large axle load condition of 35 tons or more, the transverse impact resistance of the embedded iron seat is weaker, so that the stability and the service life of the fastener system can be greatly influenced.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above disadvantages of the prior art, the utility model provides a fastener system suitable for 35 ~ 45 ton heavy haul railway.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a fastener system suitable for heavy-duty railway, including sleeper and pre-buried sleeve pipe in the sleeper, lay the rail lower bolster on the rail supporting face of sleeper, lay the rail in rail lower bolster top, at rail foot both sides installation gauge baffle, the medial surface and the cooperation of rail foot side of gauge baffle, place the bullet strip on the gauge baffle, the toe end withhold of bullet strip is on the rail, place the plain washer on the limb in the bullet strip, the screw spike passes in the limb and the pre-buried sleeve pipe of screw in plain washer and bullet strip.

Compared with the prior art, the utility model discloses an actively the effect is:

the utility model provides a fastener system suitable for 35 ~ 45 ton heavy haul railway has cancelled gauge block and pre-buried iron seat for the bolt fastener system that has of being applicable to 35 ~ 45 ton gross rail load commonly used now, the installation of substitute has set up the gauge baffle that adopts the fine reinforcing polyamide 66 material of glass, when satisfying insulating properties and structural strength, the adjustment of position about the fastener rail also can be realized to the gauge baffle through installing different models, the cooperation sleeper keeps off the shoulder and can satisfy the anti transverse load performance demand under the 35 ~ 45 ton gross rail load condition. The utility model discloses a fastener system spare part quantity still less, and the cost is lower, and fastener system overall structure is more compact stable.

The utility model provides a spiral spike suitable for 35 ~ 45 ton heavy haul railway's fastener system along the vertical certain angle slope of rail, can reduce the spiral spike to a certain extent and receive the moment of flexure, prevent that the spiral spike from taking place to deflect toward the track outside under the effect of moment of flexure, this measure can show the locking ability of moving back of reinforcing fastener system.

Drawings

The invention will now be described, by way of example, with reference to the accompanying drawings, in which:

fig. 1 is a schematic perspective view of a fastener system suitable for a 35-45 ton heavy haul railway according to the present invention;

fig. 2 is a schematic two-dimensional assembly diagram of a fastener system suitable for a 35-45 ton heavy haul railway according to the present invention;

FIG. 3 is a schematic view of a three-dimensional structure of a sleeper with embedded sleeves;

FIG. 4 is a schematic perspective view of a screw spike;

FIG. 5 is a perspective view of a flat gasket;

FIG. 6 is a perspective view of the elastic strip;

FIG. 7 is a schematic perspective view of a gage baffle;

fig. 8 is a schematic perspective view of the embedded sleeve;

FIG. 9 is a schematic perspective view of the under-rail pad;

FIG. 10 is a schematic view of the gage plate and the under-rail shim plate placement;

FIG. 11 is a schematic view of the engagement of the spring strip with the gage stop;

the reference numbers in the figures include: the track comprises a steel rail 1, a spiral spike 2, a flat washer 3, an elastic strip 4 (a middle limb 41,

toe ends

42 and 43, a left supporting surface 44 and a right supporting surface 45, and root ends 46 and 47), a gauge baffle 5 (a left limiting groove 51, a right limiting groove 52, an inner side surface 53, a step 54, a bolt hole 55, a groove outer side surface 56, a left groove 57, a reinforcing rib 58 and a right groove 59), an embedded sleeve 6, a track lower pad 7 (a front retaining shoulder 71, a rear retaining shoulder 72, a left step 73 and a right step 74), and a sleeper 8 (a rail bearing surface 81, a left groove 82, a right groove 83, a left retaining shoulder 84 and a right retaining shoulder 85).

Detailed Description

A fastener system for use with a 35-45 ton heavy haul railway, as shown in fig. 1 and 2, comprising: rail 1, spiral spike 2, flat gasket 3, bullet strip 4, gauge apron 5, pre-buried sleeve 6, rail bed board 7 and sleeper 8, wherein:

the schematic perspective view of the sleeper 8 is shown in fig. 3, and includes: the sleeper bearing surface 81, the left groove 82, the right groove 83, the left retaining shoulder 84 and the right retaining shoulder 85 are embedded with the embedded sleeve 6 in the sleeper 8.

The schematic perspective view of the screw spike 1 is shown in fig. 4.

The three-dimensional structure of the flat gasket 3 is schematically shown in fig. 5.

The schematic perspective structure of the elastic strip 4 is shown in fig. 6, and includes: a middle limb 41, a left toe end 42, a right toe end 43, a left support surface 44, a right support surface 45, a right heel end 46, and a left heel end 47.

The schematic perspective structure of the gauge apron 5 is shown in fig. 7, and includes: the structure comprises a left limiting groove 51, a right limiting groove 52, an inner side surface 53, a step 54, a bolt hole 55, a groove outer side surface 56, a left groove 57, a reinforcing rib 58 and a right groove 59.

A schematic perspective view of the embedment sleeve 6 is shown in fig. 8.

Fig. 9 shows a schematic perspective view of the under-rail pad 7, which includes: a front retaining shoulder 71, a rear retaining shoulder 72, a left step 73, and a right step 74.

The schematic arrangement of the gauge apron 5, the under-rail pad 7 and the sleeper 8 is shown in fig. 10.

Fig. 11 shows the schematic diagram of the combination of the steel rail 1, the elastic strip 4 and the gauge apron 5.

The embedded sleeve 6 is embedded in the sleeper 8, the lower rail pad 7 is directly paved on a rail bearing surface 81 of the sleeper 8, a front retaining shoulder 71 and a rear retaining shoulder 72 are arranged on the lower rail pad 7, the front retaining shoulder 71 and the rear retaining shoulder 72 can be clamped on two side surfaces of the sleeper when the lower rail pad 7 is paved on the rail bearing surface 81, a left step 73 and a right step 74 are further arranged on the lower rail pad 7, the steel rail 1 is installed and placed above the lower rail pad 7, gauge baffles 5 are installed on two sides of the rail bottom of the steel rail 1, so that the inner side surfaces 53 of the gauge baffles 5 are matched with the side surfaces of the rail bottom of the steel rail 1, the gauge baffles 5 are symmetrically placed on two sides of the rail bearing surface 81 of the sleeper 8, the groove outer side surfaces 56 of the gauge baffles 5 are kept to be tightly attached to a left groove 82 and a right groove 83 of the sleeper, transverse loads transmitted by the steel rail 1 are transmitted to the left and right retaining

shoulders

84 and 85 of the sleeper through the gauge baffles 5, and the transverse load resistance of a fastener is greatly improved. Meanwhile, the bolt hole 55 of the gauge baffle 5 is kept coaxial with the threaded hole of the embedded sleeve 6, so that the subsequent spiral spike 2 can be conveniently screwed into the embedded sleeve 6, the elastic strip 4 is placed on the gauge baffle 5, the arc sections at the root end 46 and the root end 47 of the elastic strip are respectively in contact fit with the left groove 57 and the right groove 59 of the gauge baffle 5, the toe end 42 and the toe end 43 of the elastic strip 4 are directly buckled on the steel rail 1, the flat washer 3 is placed on the elastic strip 4, and the spiral spike 2 penetrates through the flat washer 3 and the middle limb of the elastic strip 4 and is screwed into the embedded sleeve 6, so that the elastic strip 4 is deformed to generate buckling force to fix the steel rail.

Set up 1 on sleeper 8's support rail face 81 rail base slope, sleeper 8 is equipped with simultaneously and keeps off

shoulder

84 and 85, and the train acts on sleeper 8 can directly be transmitted to on sleeper 8 to the transverse load of rail 1 and can not act on spiral spike 2, has avoided spiral spike 2 to receive shear stress for a long time and has taken place to damage, influences the whole life-span of fastener, and the fastener structure is more stable, compares and keeps off shoulder structure fastener in not having and possess better anti transverse force performance.

The embedded sleeve 6 is for the 5 symmetrical anchors in sleeper 8 of rail-supporting surface 81 slope, the back is accomplished in the fastener installation, spiral spike 2 is with the same angle screw in embedded sleeve 6 and to the application of pressure of bullet strip 4, bullet strip 4 takes place bending and torsional deformation withstands on rail 1, the well limb 41 of bullet strip 4 has reaction force through plain washer 3 to spiral spike along the vertical deflection 5 of rail, spiral spike 2 can receive the moment of flexure effect, and spiral spike 2 with the slope mode screw in can weaken this moment of flexure to a certain extent, avoid spiral spike 2 the pine phenomenon to appear in the use. Left holding surface 44 and the contact of flat packing ring 3 of right holding surface 45 on the bullet strip 4, area of contact between the two increases and leads to the frictional force increase, is difficult for taking place relative slip between spiral spike 2 and the bullet strip 4, can strengthen locking performance that moves back to a certain extent.

The gauge baffle 5 is made of glass fiber reinforced polyamide 66 material, and the insulation resistance is more than 5 multiplied by 10 ⁶ Omega, tensile strength is more than or equal to 150MPa, bending strength is more than or equal to 150MPa, unnotched impact strength is more than or equal to 80kJ/m ³ The track gauge baffle 5 can be ensured to have stronger bearing capacity while the insulating performance is kept, and the reinforcing ribs 58 arranged on the track gauge baffle 5 have great strength and stability for the track gauge baffleThe lifting effect can further enhance the transverse load resistance of the gauge apron 5. The left limit groove 51 and the right limit groove 52 which are arranged on the gauge baffle 5 are matched with the middle limb 41 of the elastic strip 4 for installation, when the spiral spike 2 is screwed into the spiral sleeve 6 and screwed, the

toe ends

42 and 43 of the elastic strip 4 are firmly buckled on the upper surface of the rail bottom of the steel rail 1, the middle limb of the elastic strip 4 is firmly buckled in the left limit groove 51 and the right limit groove 52, and the limit structure on the gauge baffle 5 can limit the elastic strip to move along the longitudinal direction of the steel rail, so that the stability of the fastener along the longitudinal direction of the steel rail is ensured.

The head of the middle limb 41 of the elastic strip 4 upwarps and is not contacted with the steel rail 1 in the installation process but preferentially contacted with the gauge baffle 5, the structure on the elastic strip 4 can avoid the phenomenon that the installation is caused by overlarge screwing force in the installation process, and the phenomenon that the elastic strip 4 is broken due to the action of cyclic load for a long time in the service process due to overlarge stress is avoided.

Claims

1. A fastener system suitable for heavy-duty railways, characterized in that: the track lower base plate is laid on a rail bearing surface of the sleeper, a steel rail is placed above the rail lower base plate, gauge baffles are mounted on two sides of a rail bottom of the steel rail, the inner side surfaces of the gauge baffles are matched with the side surfaces of the rail bottom of the steel rail, an elastic strip is placed on the gauge baffles, the toe end of the elastic strip is buckled and pressed on the steel rail, a flat gasket is placed on a middle limb of the elastic strip, and a spiral spike penetrates through the flat gasket and the middle limb of the elastic strip and is screwed into the embedded sleeve.

2. A fastener system for use with heavy haul railway as claimed in claim 1, wherein: the pad plate under the rail is provided with a front retaining shoulder and a rear retaining shoulder.

3. A fastener system for use with heavy haul railway as claimed in claim 1, wherein: the lower backing plate of the rail is provided with a left step and a right step.

4. A fastener system for use with heavy haul railway as claimed in claim 1, wherein: the head of the middle limb of the elastic strip is upwarped.

5. A fastener system for use with heavy haul railway as claimed in claim 1, wherein: the rail base slope of 1.

6. A fastener system adapted for use with heavy railways according to claim 1, wherein: and reinforcing ribs are arranged on the gauge baffle.

7. A fastener system for use with heavy haul railway as claimed in claim 1, wherein: the arc section of the root end of the elastic strip is respectively in contact fit with the left groove and the right groove arranged on the gauge baffle.

8. A fastener system for use with heavy haul railway as claimed in claim 1, wherein: the middle limbs of the elastic strip are buckled and pressed in a left limiting groove and a right limiting groove which are formed in the gauge baffle.

9. A fastener system adapted for use with heavy railways according to claim 1, wherein: and a left supporting surface and a right supporting surface for placing a flat gasket are arranged on the middle limb of the elastic strip.

10. A fastener system for use with heavy haul railway as claimed in claim 1, wherein: the embedded sleeves are symmetrically and obliquely anchored in the sleeper.