CN212357835U

CN212357835U - Novel cross turnout

Info

Publication number: CN212357835U
Application number: CN201921283612.0U
Authority: CN
Inventors: 董彦录; 孙立彬; 张海华; 李悦; 张莉; 袁宝军; 冯毅
Original assignee: China Railway Baoji Bridge Group Co Ltd
Current assignee: China Railway Baoji Bridge Group Co Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2021-01-15
Anticipated expiration: 2029-08-09

Abstract

The utility model relates to a can make wheel tread and the common contact atress of rim, avoid "track interruption" phenomenon, can realize wheel tread contact atress again, the train crosses the novel cross switch of switch smoothness, the style of calligraphy frog interlude adopts shallow slot structure, make frog rail top surface and rim groove tank bottom simultaneously with wheel contact atress, avoid the track interruption, the style of calligraphy frog tip adopts deep groove structure, make frog rim groove degree of depth and standard section rail rim degree of depth unanimous, make wheel tread contact atress, and be located smooth transition between style of calligraphy frog interlude shallow slot and the style of calligraphy frog tip deep groove of switch, the switch smoothness is crossed to the reinforcing train. The advantages are that: firstly, the structure is simple, the manufacture is easy, and the processing precision is high; the overall stability is good, and the workload of line maintenance is reduced; thirdly, the 'track interruption' is avoided, and the smoothness of crossing the fork of the train is enhanced.

Description

Novel cross turnout

Technical Field

The utility model relates to a can make wheel tread and the common contact atress of rim, avoid "rail interruption" phenomenon, can realize wheel tread contact atress again, the train crosses the novel cross switch of switch ride comfort, belongs to tram switch and makes the field.

Background

At present, tramcars, road vehicles, automobiles, non-motor vehicles and the like are in mixed running or semi-isolation, and mainly plane intersection is adopted, so that cross cannot be avoided in track planning and construction. According to analysis, when the crossing angle is less than 45 degrees, the tread surface of the wheel rolls on the fork center before the wheel is separated from the wing rail, and does not fall into the wheel rim groove, and the running state is smooth, and see fig. 8; when the crossing angle is more than or equal to 45 degrees, the wheel falls into the wheel rim groove firstly after being separated from the wing rail, and then the fork center is punched, so that the phenomenon of 'track interruption' occurs, and the phenomenon is shown in figure 9. The phenomenon of 'track interruption' is bound to be accompanied by strong impact, so that the frog is damaged, the service life of the turnout is reduced, most of the existing crossed turnouts are in steel rail assembly type, the structural design and manufacturing process are complex, the stability is poor, the phenomenon of 'track interruption' exists, and the maintenance workload is large.

Disclosure of Invention

The design purpose is as follows: the defects in the background technology are avoided, the novel crossed turnout is designed, the wheel tread and the wheel rim can be subjected to common contact stress, the phenomenon of track interruption is avoided, the wheel tread contact stress can be realized, and the train can cross the turnout smoothness.

The design scheme is as follows: in order to achieve the above design objectives. The utility model discloses on structural design, between a plurality of "+ -" "style of calligraphy frog assembly weldment (the upper strata of assembly weldment is wear-resisting alloy steel, and the lower floor is the steel sheet), promptly" + - "" style of calligraphy frog upper strata adopts wear-resisting alloy steel, and the steel sheet is adopted to the lower floor, fully compromises frog life and manufacturing cost to effectively improve frog overall stability. And the end parts of the turnouts and the standard section steel rails are connected through thermite welding, so that the seamless arrangement of the turnouts in the whole group is realized. According to the wheel-rolling relation calculation, the middle section of the turnout (the + -shaped frog) is designed by adopting a shallow groove, namely the depth of a frog rim groove is consistent with that of a wheel rim, so that the top surface of the frog rail and the bottom of the frog rim groove are simultaneously contacted and stressed with wheels, the track interruption is avoided, and the crossing smoothness of the train is enhanced. The end part of the turnout (the + -shaped frog) adopts a deep groove design, namely the depth of a groove of a wheel rim of the frog is consistent with that of a steel rail wheel rim with a standard section, so that only wheel tread contact stress is realized; the thermit welding technology among three different materials of wear-resistant alloy steel, steel plates and standard section steel rails is completed, and the seamless performance of the whole set of turnouts is realized. Smooth transition between shallow slot and the deep slot of switch strengthens the train and crosses the switch ride comfort, satisfies the requirement of modern tram switch safe and comfortable, few maintenance, long-life.

The technical scheme is as follows: the utility model provides a novel cross switch, the + -.

Compared with the background art, the utility model has the advantages of simple structure, easy manufacture and high processing precision; the overall stability is good, and the workload of line maintenance is reduced; avoid the 'track interruption' and enhance the smoothness of the train crossing the fork.

Drawings

Fig. 1 is a schematic structural diagram of the novel cross turnout.

Fig. 2 is a schematic sectional view along a-a in fig. 1.

Fig. 3 is a schematic sectional view along the direction B-B in fig. 1.

Fig. 4 is a schematic sectional view in the direction of C-C in fig. 1.

Fig. 5 is a schematic sectional view along direction D-D in fig. 1.

FIG. 6 is a schematic view of a "-shaped frog assembly weldment.

Fig. 7 is a schematic sectional view along direction E-E in fig. 6.

Fig. 8 is one of the structural diagrams of the background art.

Fig. 9 is a diagram illustrating a phenomenon of "trace break" in fig. 4.

Detailed Description

Example 1: reference is made to fig. 1-7. A novel crossed turnout is formed by connecting a plurality of "+" -shaped frog assembly weldments and the end part of the turnout and a standard section steel rail through thermite welding, so that the whole set of turnout is seamless; according to wheel rolling relation calculation, the middle section of the turnout adopts a shallow groove design, the depth of a frog wheel rim groove is consistent with that of a wheel rim, and common contact stress between a wheel tread and the wheel rim is realized; the end part adopts a deep groove design, the depth of the frog wheel flange groove is consistent with that of the steel rail wheel flange with a standard section, and only wheel tread contact stress is realized; smooth transition is carried out between the turnout shallow groove and the deep groove, and the turnout passing smoothness of the train is enhanced. The upper part of the "+ -" shaped frog assembly weldment is wear-resistant alloy steel 1, and the lower part is steel plates 2 and 3 (wing plates on two sides of the steel plate 2). The "+" - "style of calligraphy frog adopts the shallow slot design, realizes that frog rail top surface and wheel flange groove tank bottom contact atress with the wheel simultaneously, avoids" track interrupt ", reinforcing train crosses fork ride comfort. 4 thermite welding technology among three different materials of wear-resisting alloy steel, steel plate and standard section steel rail realizes the seamless of whole set of turnout.

It is to be understood that: although above-mentioned embodiment is right the utility model discloses a design has done more detailed word description, but these word descriptions, are only right the utility model relates to a simple word description of idea, rather than right the utility model relates to a restriction of idea, any do not surpass the utility model relates to a combination, increase or the modification of idea all fall into the utility model discloses a within the protection scope.

Claims

1. The utility model provides a novel cross switch, characterized by: the middle section of the + -shaped frog adopts a shallow groove structure, so that the top surface of the frog rail and the bottom of the wheel rim groove are simultaneously in contact stress with the wheel, and the end part of the + -shaped frog adopts a deep groove structure, so that the depth of the wheel rim groove of the frog is consistent with that of the wheel rim of the standard section steel rail, so that the wheel tread is in contact stress, and the middle section of the + -shaped frog is in a shallow groove and is in smooth transition with the deep groove of the end part of the + -shaped frog.

2. The novel criss-cross turnout of claim 1, wherein: and a plurality of + -shaped frog assembly weldments are connected with each other and the end parts of the turnout and the steel rail with the standard section through thermite welding.

3. The novel criss-cross turnout of claim 1, wherein: the upper layer of the + -shaped frog is made of wear-resistant alloy steel, and the lower layer is made of steel plates.