CN112779824A

CN112779824A - Fastener without shoulder

Info

Publication number: CN112779824A
Application number: CN202110033998.5A
Authority: CN
Inventors: 肖俊恒; 李子睿; 张欢; 刘长溪; 李彦山; 吴玥; 李志伟; 于毫勇
Original assignee: BEIJING SHOUGANG IRON BRANCH RAIL TECHNOLOGY CO LTD
Current assignee: BEIJING SHOUGANG IRON BRANCH RAIL TECHNOLOGY CO LTD
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-05-11

Abstract

The invention discloses a shoulder-free fastener, which comprises: the buckling and pressing components are symmetrically arranged on two sides of the steel rail and are used for buckling and pressing the shoulder surface of the steel rail; the crimping subassembly includes: the iron retaining shoulder is detachably connected with the sleeper, an insulating gauge block is arranged between the iron retaining shoulder and the steel rail, one end, facing the steel rail, of the insulating gauge block is buckled and pressed on the steel rail shoulder surface, and the other end of the insulating gauge block is tightly pressed on the iron retaining shoulder; the iron fender shoulder is detachably provided with an elastic strip, one end of the elastic strip is tightly pressed on the insulating gauge block, the other end of the elastic strip is tightly pressed on the iron fender shoulder, and a rail lower base plate is arranged between the sleeper and the steel rail. This no fender shoulder fastener both can be applied to ballastless track and can be applied to ballasted track again, does not take the iron tie plate, and the structure is succinct, the rail height position adjustment of being convenient for, maintenance easy maintenance, and production low in manufacturing cost just can realize the switching of rail conventional resistance function or the rail low resistance function through changing individual spare part, realizes growing up the unification of bridge section and general roadbed section fastener structural style.

Description

Fastener without shoulder

Technical Field

The invention relates to a railway fastener, in particular to a fastener without a shoulder.

Background

At present, the construction of the rail transit line in China is accelerated and promoted, and the traffic network is gradually improved. Some rail transit lines inevitably pass through partial geological poor sections, for example, in mountain rail projects which are raised in China in recent years, as the geology of mountain areas is unstable, the rail foundation is easy to settle and deform, and therefore, a fastener structure form which is stable in structure, large in steel rail adjustment amount, easy to maintain and low in economic cost is urgently needed.

At present, rail transit line fasteners at home and abroad are various in structural form, but are classified according to the structural form of the rail, and the rail transit line fasteners are mainly divided into ballast rail fasteners and ballastless rail fasteners, the ballast rail fasteners are mainly used without iron base plates, but the height adjustment amount of a steel rail is only about 10 mm; the ballastless track fastener type mainly uses a band iron base plate, the adjustment amount of the height position of the steel rail is large, but the production and manufacturing cost is high and the maintenance is inconvenient.

Disclosure of Invention

The invention aims to provide a non-shoulder-blocking fastener which can be applied to a ballastless track and a ballast track, has no iron base plate, is simple in structure, convenient for adjusting the height of a steel rail, convenient for maintenance and repair and low in production and manufacturing cost, can realize the switching of the conventional resistance function of the steel rail or the small resistance function of the steel rail by replacing individual parts, and realizes the unification of the structural forms of fasteners of a long and large bridge section and a common roadbed section.

In order to achieve the above object, the present invention provides a shoulder-less fastener, comprising: the buckling and pressing components are symmetrically arranged on two sides of the steel rail and are used for buckling and pressing the shoulder surface of the steel rail; wherein, withhold the subassembly and include: the iron retaining shoulder is detachably connected with the sleeper, an insulating gauge block is arranged between the iron retaining shoulder and the steel rail, one end, facing the steel rail, of the insulating gauge block is buckled and pressed on the steel rail shoulder surface, and the other end of the insulating gauge block is tightly pressed on the iron retaining shoulder; the iron fender shoulder is detachably provided with an elastic strip, one end of the elastic strip is tightly pressed on the insulating gauge block, the other end of the elastic strip is tightly pressed on the iron fender shoulder, and a rail lower base plate is arranged between the sleeper and the steel rail.

Preferably, both ends of the under-rail pad plate are recessed inwards to form side grooves capable of clamping the corresponding end parts of the iron retaining shoulders.

Preferably, the bottom surface of the rail lower base plate is formed with edge strips along two ends of the extending direction of the steel rail, and the two edge strips are matched and clamped on the sleeper.

Preferably, the upper surface of the under-rail pad is formed with a plurality of first grooves in a direction parallel to the length direction of the sleeper; the lower surface of the rail lower base plate is parallel to a plurality of second grooves formed in the length direction of the sleeper, and the first grooves and the second grooves are arranged at intervals and are parallel to the steel rail.

Preferably, a height-adjusting base plate is arranged between the under-rail base plate and the sleeper rail bearing surface.

Preferably, be provided with insulating pad between iron fender shoulder and the sleeper, be provided with first through-hole on the insulating pad, iron fender is provided with the second through-hole on the shoulder, anchor bolt run through the spring washer in order install behind second through-hole and the first through-hole pre-buried in pre-buried cover in the sleeper, and will iron fender shoulder and insulating pad fastening.

Preferably, grooves parallel to the steel rails are arranged on the sleepers on two sides of the steel rails; the insulating pad is provided with an arch structure which is arched downwards and clamped in the groove, and a convex strip clamped in the arch structure is formed on the bottom surface of the iron blocking shoulder.

Preferably, a groove body used for positioning the elastic strip is formed on the iron retaining shoulder, a U-shaped groove which is through in the length direction parallel to the sleeper is further formed on the iron retaining shoulder, transverse sliding grooves are formed on two sides of the U-shaped groove, and one end, facing the steel rail, of each transverse sliding groove is closed; the supporting plate is inserted into the transverse sliding groove, sliding strips matched with the transverse sliding groove are formed at two ends of the supporting plate, a third through hole is formed in the supporting plate, and the T-shaped bolt sequentially penetrates through the third through hole, the elastic strip and the flat washer from bottom to top and then is locked through the nut.

Preferably, the lower surface of the supporting plate is provided with a clamping groove matched with the T-shaped bolt.

Preferably, a protrusion capable of being clamped in the U-shaped groove is formed on one side, facing the iron retaining shoulder, of the insulating gauge block.

According to the technical scheme, the shoulder-free fastener has the following beneficial effects: the novel long and large bridge foundation slab can be applied to ballastless tracks and ballasted tracks without iron base plates, is simple in structure, convenient to adjust the height position of the steel rail, convenient to maintain and repair and low in production and manufacturing cost, can realize the switching of the conventional resistance function or the small resistance function of the steel rail by replacing individual parts, and realizes the unification of fastener structural forms of long and large bridge foundation slabs and general roadbed foundation slabs.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is an assembled schematic view of a preferred embodiment of a non-shouldered fastener;

FIG. 2 is a schematic front view relative to FIG. 1;

FIG. 3 is a partial schematic structural view of a preferred embodiment of a tie;

FIG. 4 is an assembly schematic of a preferred embodiment of the elastic strip;

FIG. 5 is a schematic illustration of a preferred embodiment of the iron stop shoulder;

FIG. 6 is a schematic diagram of a preferred embodiment of an insulating mat;

FIG. 7 is a schematic diagram of a preferred embodiment of an insulated gage block;

FIG. 8 is a schematic structural view of a preferred embodiment of the under-rail pad;

FIG. 9 is a schematic structural view of a preferred embodiment of a pallet;

FIG. 10 is a bottom view of a preferred embodiment of a pallet;

FIG. 11 is a schematic view in half section of a preferred embodiment of an under-rail pad;

FIG. 12 is a schematic cross-sectional view of a preferred embodiment of the iron stop shoulder;

FIG. 13 is a top view of a preferred embodiment of the iron stop shoulder;

FIG. 14 is a top view of a preferred embodiment of a spring strip;

FIG. 15 is an assembly view of a preferred embodiment of the iron stop shoulder.

Description of the reference numerals

1 sleeper 2 groove

3 iron shoulder 4 rail lower backing plate

5 rail 6 spring strip

7 spring washer 8 supporting plate

9 insulating pad 10 flat gasket

11 nut 12 insulation track gauge block

13 pre-buried sleeve 14T-shaped bolt

15 transverse sliding groove 16U-shaped groove

17 groove body 18 convex strip

19 arch structure 20 first through hole

21 projection 22 side groove

23 first groove of edge strip 24

25 third through hole 26 slide

27 card slot 28 second groove

29 second through hole 30 anchor bolt

Detailed Description

The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.

In the present invention, unless otherwise specified, directional words included in terms such as "upper, lower, left, right, front, rear, inner, and outer" and the like merely represent the directions of the terms in a normal use state or are colloquially known by those skilled in the art, and should not be construed as limiting the terms.

Referring to fig. 1-15, a shoulder-less fastener is shown, comprising: the buckling and pressing components are symmetrically arranged on two sides of the steel rail 5 and are used for buckling and pressing the shoulder surface of the steel rail 5; wherein, withhold the subassembly and include: the iron retaining shoulder 3 is detachably connected with the sleeper 1, an insulating gauge block 12 is arranged between the iron retaining shoulder 3 and the steel rail 5, one end, facing the steel rail 5, of the insulating gauge block 12 is buckled and pressed on the shoulder surface of the steel rail 5, and the other end of the insulating gauge block is tightly pressed on the iron retaining shoulder 3; the iron retaining shoulder 3 is detachably provided with an elastic strip 6, one end of the elastic strip 6 is tightly pressed on the insulating gauge block 12, the other end of the elastic strip is tightly pressed on the iron retaining shoulder 3, and a rail lower base plate 4 is arranged between the sleeper 1 and the steel rail 5.

Through the implementation of above-mentioned technical scheme, make this no fender shoulder fastener both can be applied to ballastless track and can be applied to ballasted track again, do not take the iron tie plate, the structure is succinct, the adjustment of 5 height positions of rail of being convenient for, maintenance easy maintenance, production low in manufacturing cost, and can realize the switching of 5 conventional resistance functions of rail or 5 small resistance functions of rail through changing individual spare part, realize the unification of long and large bridge section and general road bed section fastener structural style, according to the different damping grade requirements of track circuit, can design different elastic rail lower bolster 4. For example: change different bullet strip 6 and rail bottom plate 4 through quick dismantlement, can realize the 5 longitudinal resistance of different rail, use the combination of conventional withholding pressure bullet strip 6 and rubber backing plate like conventional resistance, little resistance uses little withholding pressure bullet strip 6 and compound backing plate combination, change the switching that individual spare part can realize 5 conventional resistance functions of rail or 5 little resistance functions of rail promptly, maintenance easy maintenance, because iron keeps off shoulder 3 detachably and fixes on sleeper 1, and bullet strip 6 detachably installs on iron keeps off shoulder 3, need not dismantle iron and keep off shoulder 3 at the in-process of changing bullet strip 6 and rail bottom plate 4, realized the quick dismantlement purpose, in addition, position about insulating gauge block 12 adjustment rail 5 through different specifications.

In this embodiment, in order to increase the stability of the under-rail pad 4, it is preferable that both ends of the under-rail pad 4 are recessed inward to form side grooves 22 capable of engaging with the corresponding ends of the iron retaining shoulder 3. Through the setting of side channel 22 for side channel 22 both sides form the limit ear, and the limit ear blocks iron fender shoulder 3 both sides, prevents that rail bottom plate 4 from playing along rail 5 direction.

In this embodiment, in order to further improve the stability of the rail under-pad 4, it is preferable that the bottom surface of the rail under-pad 4 has edge bars 23 formed along both ends in the extending direction of the rail 5, and both the edge bars 23 are fitted and engaged with the sleepers 1.

In this embodiment, in order to further provide an under-rail pad 4 to obtain good cushioning performance, preferably, the upper surface of the under-rail pad 4 is formed with a plurality of first grooves 24 in a direction parallel to the length direction of the sleeper 1; the lower surface of the under-rail pad 4 is formed with a plurality of second grooves 28 along the length direction parallel to the sleeper 1, and the plurality of first grooves 24 and second grooves 28 are arranged at intervals and are all parallel to the steel rail 5.

In this embodiment, preferably, an elevation pad is disposed between the under-rail pad 4 and the rail bearing surface of the sleeper 1. The height adjusting base plates with different thicknesses are arranged between the rail lower base plate 4 and the rail bearing surface of the sleeper 1 in a cushioning mode, and therefore the height of the steel rail 5 can be adjusted.

In this embodiment, in order to further improve the insulation effect, preferably, an insulation pad 9 is disposed between the iron retaining shoulder 3 and the sleeper 1, a first through hole 20 is disposed on the insulation pad 9, a second through hole 29 is disposed on the iron retaining shoulder 3, and an anchor bolt 30 is sequentially inserted through the spring washer 7, the second through hole 29 and the first through hole 20, then installed in an embedded sleeve 13 embedded in the sleeper 1, and fastens the iron retaining shoulder 3 and the insulation pad 9. The insulation between the steel rail 5 and the sleeper 1 is realized through the insulating gauge block 12, the lower rail pad 4, the insulating pad 9 and the embedded sleeve 13. The insulating spacers 9 serve, of course, to relieve the impact of the iron shoulders 3 on the concrete sleeper 1.

In this embodiment, it is preferable that the sleepers 1 are provided with grooves 2 parallel to the rails 5 on both sides of the rails 5; an arch structure 19 which is arched downwards and is clamped in the groove 2 is arranged on the insulating pad 9, and a convex strip 18 which is clamped in the arch structure 19 is formed on the bottom surface of the iron blocking shoulder 3. Through anchor bolt 30, spring washer 7, pre-buried sleeve 13 fastening iron keep off shoulder 3 and insulating pad 9, the iron keeps off during the installation sand grip 18 on the shoulder 3, the domes 19 on the insulating pad 9 cooperate with the slot 2 on the sleeper 1, keep off the shoulder as the fastener, need not to dismantle again in the later stage operation maintenance and keep off the shoulder, set up slot 2 and still be used for bearing 5 transverse force of rail by the transmission of iron fender shoulder 3.

In this embodiment, in order to further provide a structure for quick detachment and installation between the elastic strip 6 and the iron blocking shoulder 3, preferably, a groove 17 for positioning the elastic strip 6 is formed on the iron blocking shoulder 3, a U-shaped groove 16 penetrating in a direction parallel to the length direction of the sleeper 1 is further formed on the iron blocking shoulder 3, lateral sliding grooves 15 are formed on two sides of the U-shaped groove 16, and one end of the lateral sliding groove 15 facing the steel rail 5 is set to be closed; the supporting plate 8 is inserted into the transverse sliding groove 15, sliding strips 26 matched with the transverse sliding groove 15 are formed at two ends of the supporting plate 8, a third through hole 25 is formed in the supporting plate 8, and the T-shaped bolt 14 sequentially penetrates through the third through hole 25, the elastic strip 6 and the flat washer 10 from bottom to top and then is locked through a nut 11. The setting through cell body 17 prevents that it from sliding with the spacing card of one end of bullet strip 6 wherein, can be convenient for layer board 8 through setting up horizontal spout 15 and install and target in place, and the installation of bullet strip 6 is: firstly, inserting the T-shaped bolt 14 into the supporting plate 8, then transversely moving the supporting plate 8 into the transverse sliding groove 15 in the preformed groove of the iron retaining shoulder 3, placing the elastic strip 6 in place, and installing the nut 11 and the flat washer 10 to fasten the elastic strip 6.

Of course, in order to prevent the T-bolt 14 from rotating when the nut 11 is tightened, it is preferable that the lower surface of the support plate 8 is provided with a locking groove 27 matched with the T-bolt 14.

In this embodiment, in order to improve the stability of the insulating gauge block 12, it is preferable that a protrusion 21 capable of being engaged with the U-shaped groove 16 is formed on a side of the insulating gauge block 12 facing the iron collar 3. The protrusion 21 is clamped in the iron shoulder 3 to prevent the insulating gauge block 12 from shifting out along the steel rail 5.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims

1. A non-shouldering fastener, characterized in that it comprises: the buckling and pressing components are symmetrically arranged on two sides of the steel rail (5) and are used for buckling and pressing the shoulder surface of the steel rail (5); wherein the content of the first and second substances,

the crimping assembly comprises: the iron retaining shoulder (3) is detachably connected with the sleeper (1), an insulating track gauge block (12) is arranged between the iron retaining shoulder (3) and the steel rail (5), one end, facing the steel rail (5), of the insulating track gauge block (12) is buckled and pressed on the shoulder surface of the steel rail (5), and the other end of the insulating track gauge block is pressed on the iron retaining shoulder (3);

iron keeps off and installs bullet strip (6) on shoulder (3) detachably, the one end of bullet strip (6) compresses tightly on insulating gauge block (12), the other end compress tightly in on iron keeps off shoulder (3), set up rail lower bolster (4) between sleeper (1) and rail (5).

2. The non-shoulder fastener according to claim 1, wherein the rail pad (4) has two ends recessed inward to form side grooves (22) for engaging with the corresponding ends of the iron shoulders (3).

3. The non-shoulder fastener according to claim 2, wherein the bottom surface of the tie plate (4) is formed with edge strips (23) at both ends in the extending direction of the steel rail (5), and the two edge strips (23) are engaged with the sleeper (1).

4. The non-shouldering fastener according to claim 1, wherein the upper surface of the tie plate (4) is formed with a plurality of first grooves (24) in a direction parallel to the length of the sleeper (1);

the lower surface of the rail lower base plate (4) is formed with a plurality of second grooves (28) along the length direction parallel to the sleeper (1), and the first grooves (24) and the second grooves (28) are arranged at intervals and are parallel to the steel rail (5).

5. The shoulder-free fastener according to any one of claims 1-4, characterized in that an elevation pad is provided between the tie plate (4) and the rail-bearing surface of the sleeper (1).

6. The shoulder-free fastener according to any one of claims 1-4, wherein an insulating pad (9) is arranged between the iron retaining shoulder (3) and the sleeper (1), a first through hole (20) is arranged on the insulating pad (9), a second through hole (29) is arranged on the iron retaining shoulder (3), and an anchoring bolt (30) sequentially penetrates through the spring washer (7), the second through hole (29) and the first through hole (20) and then is installed in an embedded sleeve (13) pre-embedded in the sleeper (1), and the iron retaining shoulder (3) and the insulating pad (9) are fastened.

7. The non-shoulder fastener according to claim 6, characterized in that the sleepers (1) are provided with grooves (2) parallel to the rails (5) on both sides of the rails (5);

an arch structure (19) which is arched downwards and clamped in the groove (2) is arranged on the insulating pad (9), and a convex strip (18) which is clamped in the arch structure (19) is formed on the bottom surface of the iron blocking shoulder (3).

8. The non-shoulder fastener according to claim 7, wherein the iron shoulder (3) is formed with a groove (17) for positioning the elastic strip (6), the iron shoulder (3) is further formed with a U-shaped groove (16) running through in a direction parallel to the length direction of the sleeper (1), two sides of the U-shaped groove (16) are formed with transverse sliding grooves (15), and one end of each transverse sliding groove (15) facing the steel rail (5) is closed;

the supporting plate (8) is inserted into the transverse sliding groove (15), sliding strips (26) matched with the transverse sliding groove (15) are formed at two ends of the supporting plate (8), third through holes (25) are formed in the supporting plate (8), and T-shaped bolts (14) sequentially penetrate through the third through holes (25), the elastic strips (6) and the flat washers (10) from bottom to top and are locked through nuts (11).

9. The shoulder-free fastener according to claim 8, wherein the lower surface of the support plate (8) is provided with a locking groove (27) matched with the T-bolt (14).

10. The non-shouldering fastener according to claim 8, wherein a side of the insulating gauge block (12) facing the iron shouldering (3) is formed with a protrusion (21) capable of being engaged in the U-shaped groove (16).