CN218812911U

CN218812911U - Rail brace type fastener

Info

Publication number: CN218812911U
Application number: CN202223250659.1U
Authority: CN
Inventors: 王方甫; 李强
Original assignee: Hebei Zhongshuo Rail Technology Co ltd
Current assignee: Hebei Zhongshuo Rail Technology Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-04-07
Anticipated expiration: 2032-12-05

Abstract

The utility model discloses a rail brace type fastener, which relates to the field of steel rail traffic, and comprises a bottom plate for supporting the bottom of a steel rail, wherein the bottom plate is symmetrically provided with rail braces for the positions of two sides of the steel rail, each rail brace comprises a fixed part and a curved surface supporting part which is attached to the side surface of the steel rail, a vibration damping pad under the steel rail is arranged under the steel rail corresponding to the position on the bottom plate, a rubber buckle pressing block is arranged on the curved surface supporting part and in contact with the waist part of the steel rail, a nylon friction damping layer is arranged at the contact position of the rubber buckle pressing block and the waist part of the steel rail, and a rail nail is arranged between the bottom plate and the rail braces in a penetrating way; through the horizontal restraint of rail brace to the rail waist, realized lower vertical rigidity of fastener and better damping effect when guaranteeing that the fastener possess enough lateral stability. Thereby when guaranteeing that the damping fastener has better damping effect, promoted the safety and stability nature of circuit by a wide margin to simple structure, installation maintain convenient.

Description

Rail brace type fastener

Technical Field

The utility model relates to a rail traffic field relates to a rail brace formula fastener.

Background

At present, in the field of urban rail traffic, the vibration reduction of high-grade vibration reduction fasteners can be divided into two types, namely floating rail type vibration reduction fasteners and compression type fasteners.

The design scheme of the floating rail fastener is that the rail is suspended, the two side oblique supporting plates and the rail web rubber blocks are used for clamping and restraining the steel rail, and the compression and shearing characteristics of rubber are used for respectively realizing high transverse stability and low vertical rigidity of the fastener. According to the design, on one hand, the lower rail base plate is idle, the space under the rail is wasted, the weight born vertically is excessively added on the supporting plates at the two sides and the rail waist rubber block, and the rubber is not favorable for the fatigue life under the action of shearing for a long time. On the other hand, the design requires excessive precision matching, has a complex structure, is difficult to install and maintain, and is prone to diseases.

Generally, the lower the stiffness of the damping fastener, the better the damping effect. For a compression type vibration damping fastener, the lower the rigidity is, the larger the rail head deflection is, and the two indexes are mutually contradictory. At present, the problem of promoting compression type damping fastener lateral stability has all adopted the method of addding horizontal stop device basically in the market, upwards stretches out the fender shoulder at lower iron tie plate both ends, then places the filling block between upper and lower iron tie plate, retrains the lateral displacement and the deflection of iron tie plate through lower iron tie plate. By adopting the design scheme, on one hand, the problem of steel rail deflection cannot be directly solved, and the effect of improving the transverse stability of the steel rail is limited. On the other hand, along with the wearing and tearing of filling block, upper and lower iron tie plate transversely appears the fit clearance, and the fender shoulder of lower iron tie plate can not play horizontal limit function to upper iron tie plate this moment. Moreover, adopt this structure, additionally increased fastener spare part quantity, be unfavorable for manufacturing cost control and later maintenance.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the invention provides a rail brace type fastener, which does not need to suspend a steel rail, but leads the steel rail to fall on an elastic base plate under the rail like the traditional fastener, and the base plate under the rail can adopt a low-rigidity design; the rail supports on the two sides mainly provide transverse support and buckling and pressing on the steel rail, so that the stress of the rubber blocks and the inclined supports on the two sides is greatly reduced, and the whole fastener is more reasonable and balanced in structure; compared with the structure of a floating rail fastener, the structure of the floating rail fastener can be greatly simplified, and the transverse deformation resistance of the floating rail fastener is greatly improved.

The utility model adopts the technical proposal that: a rail brace type fastener comprises a bottom plate for supporting the bottom of a steel rail, wherein rail braces are symmetrically arranged on the bottom plate relative to two side positions of the steel rail, each rail brace comprises a fixing part and a curved surface supporting part attached to the side surface of the steel rail, a lower rail damping pad is arranged on the bottom plate corresponding to the position under the steel rail, a rubber fastening block is arranged on the curved surface supporting part in contact with the waist part of the steel rail, and a rail nail penetrates through the bottom plate and the rail braces; through the horizontal restraint of rail brace to the rail waist, realized lower vertical rigidity of fastener and better damping effect when guaranteeing that the fastener possess enough lateral stability to when guaranteeing that the damping fastener has better damping effect, promoted the safety and stability nature of circuit by a wide margin, and simple structure, installation maintenance convenience.

In order to further optimize the utility model, the following technical scheme can be preferably selected for use:

preferably, a plurality of rail supporting plates are arranged between the fixing part and the curved surface supporting part side by side, so that the structural strength of the rail supporting is improved.

Preferably, the briquetting is detained to rubber one end extends to rail foot position department, the briquetting is detained to rubber other end extends to curved surface supporting part top position, the briquetting inboard is detained to rubber corresponds rail foot top position and is provided with the support bar, and then realizes that the briquetting is detained to rubber and detains the horizontal elastic support of pressing and the web of a rail foot.

Preferably, a nylon antifriction layer is arranged at the contact position of the rubber buckle pressing block and the steel rail waist part, the rubber buckle pressing block and the curved surface supporting part are integrally vulcanized, the nylon antifriction layer is assembled on the rubber buckle pressing block, the nylon antifriction layer structure plays a direct role in transversely supporting and resisting abrasion on the rail waist part,

preferably, the rubber buckle pressing block is provided with a nylon antifriction layer at the contact position with the steel rail waist, and the rubber buckle pressing block, the curved surface supporting part and the nylon antifriction layer are integrally vulcanized.

Preferably, rubber buckle briquetting is provided with the nylon antifriction layer with rail waist contact position department, rubber buckle briquetting, curved surface supporting part, nylon antifriction layer pre-assembly set up, set up a plurality of logical grooves that are used for the joint equipment on rubber buckle briquetting, the curved surface supporting part, be provided with logical groove complex card strip on the nylon antifriction layer.

Preferably, the bottom plate and the fixing part are further provided with bolt holes, the rail brace and the bottom plate are connected through T-shaped bolts installed in the bolt holes, the spikes are arranged at the diagonal positions of the bottom plate, and the T-shaped bolts and the spikes are arranged in a crossed mode.

Preferably, the lower surface of the bottom plate is provided with a first distance adjusting tooth side by side along the direction of the steel rail, and the lower surface of the fixing part is provided with a second distance adjusting tooth matched with the first distance adjusting tooth.

Preferably, the spike is arranged at the diagonal position of the bottom plate, a limiting protruding part is further arranged on the bottom plate opposite to the spike, and a clamping groove matched with the fixing part of the rail brace is formed between the limiting protruding part and the bottom plate.

Preferably, the upper surface of the bottom plate and the lower surface of the fixing part are subjected to sanding treatment, so that stepless distance adjustment can be realized.

The utility model has the advantages that:

1. the rail brace type damping fastener has the technical characteristics that:

(1) The lateral stability can be ensured while the low rigidity required by the vibration reduction of the fastener is realized.

(2) The nail holes and the height of the fasteners can be consistent with those of all the existing fasteners basically, and the universal interchangeability is strong.

(3) The parts are few, and the structure is simple and reliable.

(4) The problems that the pioneer floating rail fastener has more parts and is easy to have diseases such as abnormal states and the like are solved, and the problem that the existing low-rigidity vibration-damping fastener is insufficient in transverse stability is also solved.

2. The structural feature of rail brace formula damping fastener:

(1) The rail brace and the rail web rubber block do not need to be supported to the bottom of the rail head, and only the upper part of the rail web is supported, so that the vertical free deformation stroke of the rail head is prevented from being influenced, and the vertical force is prevented from being transmitted to the rail brace.

(2) The contact surface of the rail web rubber block and the steel rail is provided with a nylon antifriction layer, and the rail support, the rubber buckle pressing block and the nylon antifriction layer can be vulcanized into an integrated component or the rail support and the rubber buckle pressing block are vulcanized into a whole and then assembled with the nylon antifriction layer (the nylon antifriction layer can be replaced independently in the later period). The assembly only needs to be closely attached to the rail web, prepressing is not needed to be arranged, and therefore the whole installation is simple.

(3) The rail web rubber block is buckled and pressed on the rail bottom, and the elastic base plate under the rail has a certain prepressing amount after being assembled.

(4) The elastic pad under the rail adopts a low-rigidity design, but overload protection needs to be arranged, and the thickness of the elastic pad is not too thin, preferably about 20 mm-25 mm, because the rigidity is low and the prepressing amount is needed, and the designed compression amount is not more than 4mm.

(5) The width of the pad plate under the rail can be about 20mm wider than the width of the bottom edge of the rail, so that the pad plate under the rail does not need to move when the rail brace moves left and right to adjust the rail gauge, the pad plate under the rail is larger, and the damping effect of absorbing energy is better.

(6) The rail brace and the iron base plate are screwed up through the bolts, the bolts are provided with double nuts for preventing looseness, the sawtooth blocks are arranged between the rail brace and the iron base plate and used for adjusting the rail gauge, and the distance adjusting blocks of the iron base plate can be omitted.

Drawings

FIG. 1 is a schematic view of the entire structure of a rail-brace type vibration-damping fastener system of embodiment 1;

FIG. 2 is a cross-sectional view of a rail-brace type vibration-damping fastener system of embodiment 1;

FIG. 3 is a schematic view of a rail brace structure in embodiment 1;

FIG. 4 is a schematic view of the structure of the integrated sulfidation rail brace in example 1;

FIG. 5 is a schematic view of an assembled integrated rail brace structure in embodiment 1;

FIG. 6 is a schematic view of a disassembled structure of the assembled integrated rail brace in embodiment 1;

FIG. 7 is a schematic view of the vulcanized rail brace assembled and combined in the embodiment 1;

FIG. 8 is a schematic view of a bottom plate structure in example 1;

FIG. 9 is a schematic view showing the overall structure of a rail-brace type vibration-damping fastener system according to embodiment 2;

FIG. 10 is a cross-sectional view of the rail brace type vibration-damping fastener system of embodiment 2;

FIG. 11 is a schematic view of a rail brace structure according to embodiment 2;

FIG. 12 is a schematic view showing the structure of a frosted surface of a base plate in example 2;

FIG. 13 is a schematic perspective view of a base plate according to embodiment 2;

FIG. 14 is a schematic view showing the overall structure of an in-line fastener according to example 3;

FIG. 15 is a cross-sectional view of the in-line fastener of example 3;

FIG. 16 is a schematic structural view of a base plate in embodiment 3;

FIG. 17 is a schematic view of a rail brace structure according to embodiment 3;

the steel rail comprises a steel rail 1, a steel rail 2, a bottom plate 3, a rail brace 4, a fixing part 5, a curved surface supporting part 6, an under-rail damping pad 7, a rubber buckle block 8, a spike 9, a nylon anti-friction layer 10, a rail supporting plate 11, a through groove 11, a clamping strip 12, a distance adjusting tooth surface 13, a bolt hole 14, a bolt 15, a T-shaped bolt 16, a limiting bulge 16, a clamping groove 17 and a frosting surface 18.

Detailed Description

In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.

Example 1:

as shown in fig. 1-8, a rail brace type fastener comprises a bottom plate 2 for supporting the bottom of a steel rail 1, rail braces 3 are symmetrically arranged on the bottom plate for two sides of the steel rail, each rail brace comprises a fixing part 4 and a curved surface supporting part 5 attached to the side surface of the steel rail, wherein a plurality of rail brace plates 10 are arranged between the fixing part 4 and the curved surface supporting parts 5 side by side, and the structural strength of the rail brace is improved. A lower vibration damping pad 6 of the rail is arranged on the bottom plate corresponding to the position right below the steel rail, wherein a mounting groove is formed in the bottom plate corresponding to the position of the lower vibration damping pad of the rail, the bottom of the lower vibration damping pad of the rail is sunken in the mounting groove, and the projecting mounting groove at the top of the lower vibration damping pad of the rail is propped against the bottom of the steel rail; a rubber buckle pressing block 7 is arranged on the curved surface supporting part and in contact with the waist part of the steel rail, and a spike 8 is arranged between the bottom plate and the rail brace in a penetrating way; through the transverse restraint of the rail brace on the rail waist, the fastener is guaranteed to have enough transverse stability, and meanwhile, lower vertical rigidity and better vibration damping effect of the fastener are achieved, so that the vibration damping fastener is guaranteed to have better vibration damping effect, meanwhile, the safety and stability of a circuit are greatly improved, and the vibration damping fastener is simple in structure and convenient to install and maintain; in the embodiment, a double-bolt locking form of a spike and a T-shaped bolt is adopted, bolt holes 14 are further formed in the bottom plate and the fixing part, the rail brace and the bottom plate are connected through the T-shaped bolt arranged in the bolt holes, the spike is arranged at the diagonal position of the bottom plate, and the T-shaped bolt 15 and the spike 8 are arranged in a crossed mode.

In a preferable embodiment, one end of the rubber buckle pressing block 7 extends to the position of the rail foot of the steel rail, the other end of the rubber buckle pressing block extends to the top position of the curved surface supporting part, and a supporting strip is installed on the inner side of the rubber buckle pressing block corresponding to the top position of the rail foot of the steel rail, so that the buckling of the rubber buckle pressing block on the rail foot of the steel rail and the transverse elastic support of the rail web are realized.

As the preferred embodiment, the nylon antifriction layer 9 is installed at the contact position of the rubber buckle pressing block and the steel rail waist, the rubber buckle pressing block, the curved surface supporting part and the nylon antifriction layer are integrally installed in a vulcanization mode, pre-assembly is achieved through the vulcanization mode, production cost is reduced, and rapid installation is facilitated.

As a preferable embodiment, the rubber buckle pressing block and the curved surface supporting part are integrally installed in a vulcanization mode, the nylon antifriction layer is assembled and installed on the rubber buckle pressing block, and the nylon antifriction layer structure plays a direct transverse supporting and abrasion-resistant role in the rail web.

As a preferred scheme, a rubber buckle pressing block 7, a curved surface supporting part 5 and a nylon antifriction layer are pre-assembled, a plurality of through grooves 11 for clamping and assembling are formed in the rubber buckle pressing block and the curved surface supporting part, and clamping strips 12 matched with the through grooves are arranged on the nylon antifriction layer; the rail brace is buckled with the rubber and is buckled the briquetting and vulcanize integrative back and then assemble integrative with nylon antifriction layer, and nylon antifriction layer can be changed alone in the later stage, reduces cost of maintenance.

In a preferred embodiment, a first distance adjusting tooth is arranged on the lower surface of the bottom plate 2 side by side along the direction of the steel rail, and a second distance adjusting tooth matched with the first distance adjusting tooth is arranged on the lower surface of the fixing part, wherein the first distance adjusting tooth forms a distance adjusting tooth surface 13, so that accurate adjustment between the rail brace and the steel rail is realized.

Example 2:

as shown in fig. 9-13, the difference between this embodiment 2 and embodiment 1 is that the fixing structure between the base plate and the rail brace is different, unlike the double-bolt locking form of the spike and the T-bolt in embodiment 1, in this embodiment, the spike and the buckle locking structure are used instead, the spike is installed at the diagonal position of the base plate, the position of the base plate facing the spike is also installed with a limiting protrusion, a slot 17 matched with the fixing part of the rail brace is formed between the limiting protrusion 16 and the base plate, and the base plate and the rail brace are fixed by combining the slot and the spike; the upper surface of the bottom plate and the lower surface of the fixing part are provided with frosted surfaces 18 for treatment, and stepless distance adjustment between the steel rail and the rail brace can be realized.

Example 3:

as shown in fig. 14-17, the difference between this embodiment 3 and

embodiments

1 and 2 is that this structure is an in-line fastener, and a single spike on one side is used for fixing, and the fixing form of the rail brace is similar to that of embodiment 2, and the fixing of the base plate and the rail brace is realized by combining the clamping groove and the spike.

The invention provides a rail brace type fastener. The main structure of the rail-mounted anti-abrasion device mainly comprises a bottom plate, a rail brace, a lower-rail vibration damping pad, a rubber buckle pressing block, a nylon anti-abrasion layer, a rail brace fixing bolt, a spike structure and the like. Wherein the rail brace, the rubber buckle pressing block and the nylon antifriction layer are vulcanized integrally or preassembled integrally. Through the horizontal restraint of rail brace to the rail waist, realized lower vertical rigidity of fastener and better damping effect when guaranteeing that the fastener possess enough lateral stability. Thereby when guaranteeing that the damping fastener has better damping effect, promoted the safety and stability nature of circuit by a wide margin to simple structure, installation are maintained conveniently. The invention has the technical effects that: the low rigidity (5 kN/mm-10 kN/mm) of the vibration reduction fastener is kept, the vibration reduction effect is more than or equal to 10dB, the transverse stability of the vibration reduction fastener is effectively ensured, and the dynamic transverse displacement of the rail head is controlled within 2 mm. Meanwhile, the structure is simple, and the installation and maintenance are convenient.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A rail brace type fastener is characterized by comprising a bottom plate used for supporting the bottom of a steel rail, rail braces are symmetrically arranged on the bottom plate for two side positions of the steel rail and comprise a fixing portion and a curved surface supporting portion attached to the side face of the steel rail, a vibration damping pad below the steel rail is arranged on the bottom plate corresponding to the position right below the steel rail, a rubber buckling block is arranged on the curved surface supporting portion and in contact with the waist portion of the steel rail, and a rail nail penetrates between the bottom plate and the rail braces.

2. A rail brace fastener as defined in claim 1, wherein: a plurality of rail supporting plates are arranged between the fixing part and the curved surface supporting part side by side.

3. A rail brace fastener as defined in claim 1, wherein: rubber buckle briquetting one end extends to rail foot position department, the rubber buckle briquetting other end extends to curved surface supporting part top position, the inboard corresponding rail foot top position of rubber buckle briquetting is provided with the support bar.

4. A rail brace fastener as defined in claim 1, wherein: the rubber buckle pressing block and the steel rail waist contact position are provided with nylon antifriction layers, the rubber buckle pressing block and the curved surface supporting part are integrally vulcanized, and the nylon antifriction layers are assembled on the rubber buckle pressing block.

5. A rail brace fastener as defined in claim 1, wherein: the rubber buckle pressing block is arranged at the position, in contact with the waist of the steel rail, of the nylon antifriction layer, and the rubber buckle pressing block, the curved surface supporting part and the nylon antifriction layer are integrally vulcanized.

6. A rail-braced fastener according to claim 1, wherein: the rubber buckles the briquetting and is provided with the nylon antifriction layer with rail waist contact position department, rubber buckles briquetting, curved surface supporting part, nylon antifriction layer pre-assembly and sets up, set up a plurality of logical grooves that are used for the joint equipment on rubber buckles briquetting, the curved surface supporting part, be provided with logical groove complex card strip on the nylon antifriction layer.

7. A rail brace fastener as defined in claim 1, wherein: the rail support and the bottom plate are connected through T-shaped bolts arranged in the bolt holes, the spikes are arranged at the diagonal positions of the bottom plate, and the T-shaped bolts and the spikes are arranged in a crossed manner.

8. A rail brace fastener as claimed in claim 7, in which: the lower surface of the bottom plate is provided with first distance adjusting teeth in parallel along the direction of the steel rail, and the lower surface of the fixing part is provided with second distance adjusting teeth matched with the first distance adjusting teeth.

9. A rail brace fastener as defined in claim 1, wherein: the spike is arranged at the diagonal position of the bottom plate, a limiting protruding part is arranged on the bottom plate and is opposite to the spike, and a clamping groove matched with the fixing part of the rail brace is formed between the limiting protruding part and the bottom plate.

10. A rail brace fastener as claimed in claim 9, in which: the upper surface of the bottom plate and the lower surface of the fixing part are subjected to sanding treatment.