CN210561783U

CN210561783U - D20 type temporary beam transformation mounting structure for double-track existing railway with line spacing smaller than 4.51m

Info

Publication number: CN210561783U
Application number: CN201921282952.1U
Authority: CN
Inventors: 骆云超; 王元清; 游勇; 杨浩; 方兵
Original assignee: China Railway 11th Bureau Group Co Ltd; Fifth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Current assignee: China Railway 11th Bureau Group Co Ltd; Fifth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-05-19
Anticipated expiration: 2029-08-08

Abstract

The utility model discloses a linear spacing is less than 4.51m double-track existing railway D20 type just roof beam transformation mounting structure, including S2 crossbeam, S10 longeron, S4 gusset plate, S12 bracket and S13 bracket add the intermediate hole between two holes of S13 bracket, the centre-to-centre spacing of this intermediate hole and minor face side opening is 70mm, and the centre-to-centre spacing with the long limit side opening is 80 mm; the end of the S2 cross beam is mounted on the S10 longitudinal beam through an S13 bracket, an S4 gusset plate and an S12 bracket which are sequentially arranged from top to bottom, a middle hole of the S13 bracket is connected with a first hole at the top of a side rib of the S10 longitudinal beam, a long side hole of the S13 bracket is connected with a second hole at the side rib of the S10 longitudinal beam, and therefore the distance L between the top of a steel rail mounted on the S2 cross beam and the top of the S10 longitudinal beam is 149 mm. Safe and reliable, easy operation make D20 type just be applied to the double-line interval after the roof beam transformation and be less than 4.51m and erect the requirement that "the distance between longeron top and the roof of rail is not more than 200 mm".

Description

D20 type temporary beam transformation mounting structure for double-track existing railway with line spacing smaller than 4.51m

Technical Field

The utility model relates to a D20 type just, roof beam reform transform mounting structure, in particular to reassemble the method of guaranteeing that the longeron is unlikely to pour into the railway clearance under the condition that the double-track railway line interval is less than 4.51 m.

Background

In the process of overhead existing line lines in China, when D20-type temporary beams are adopted by double-line railways, the requirement of line limit can be ensured only under the condition that the distance between the double lines is more than 4.51 m. When the distance between the double wires is less than 4.51m, all the assembly modes can not meet the requirements of GB 146.2-83 Standard gauge railway construction limits that the distance between the top of the longitudinal beam and the rail top is not more than 200mm or the distance between the inner side of the longitudinal beam and the center of the line is not more than 1.725_mm"is required.

Referring to fig. 1, 2 and 3, the D20 type temporary beam mainly comprises an S2 transverse beam 1, an S10 longitudinal beam 2, an S4 gusset plate 3, an S12 bracket 4 and an S13 bracket 5. The S12 bracket 4 was used as the upper bracket and the S13 bracket 5 was used as the lower bracket. S12 the bracket 4 is provided with a short side hole, a middle hole and a long side hole, the center distance between the short side hole and the middle hole is 80mm, and the center distance between the long side hole and the middle hole is 150 mm. S13 bracket 5 is provided with a short side hole and a long side hole, and the distance between the two holes is 150 mm. When the distance between the double lines is less than 4.51m, the distance L between the top of the steel rail 6 and the top of the S10 longitudinal beam 2 after the D20 type temporary beam is installed is 299mm, which exceeds the requirement of GB 146.2-83 Standard gauge railway construction limits that the distance between the top of the longitudinal beam and the top of the rail is not more than 200 mm. Assuming that the S12 corbel 4 is moved upwards for installation, the holes on the side rib of the S10 longitudinal beam 2 are alternately arranged at intervals of 80mm and 70mm, the installation can be carried out only by upwardly shifting 2 holes by 150mm, and the interference between the upper end of the S12 corbel 4 and the top plate of the S10 longitudinal beam 2 is inevitably caused.

In general, D20 type temporary beams are avoided in similar situations, and D12, D16 or D24 type temporary beams are used instead, so that the D20 type temporary beams are more limited in use. For individual special conditions, if the beam is replaced and moved for multiple times, the beam is difficult to ensure reasonable configuration without adopting D20 type, and various beam types have large demand and high cost investment. If the D20 type temporary beam which is configured can be used for transformation and installation, the requirement that the distance between the top of the longitudinal beam and the rail top is not more than 200mm is met by the existing double-track railway under the condition of the line spacing less than 4.51m, the times of beam replacement and beam moving are greatly reduced, and the purchase investment cost is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a safe and reliable, easy operation's the just roof beam of D20 type reforms transform mounting structure, makes it be applied to the requirement that "longeron top is not more than 200mm apart from the top of the rail" when the bilinear interval is less than 4.51m erects to make the best use of, reduce cost.

Therefore, the utility model discloses the technical scheme who adopts does: a D20 type temporary beam transformation mounting structure for a double-track existing railway with a line spacing of less than 4.51m comprises an S2 cross beam, an S10 longitudinal beam, an S4 gusset plate, an S12 bracket and an S13 bracket, wherein a middle hole is additionally arranged between two holes of the S13 bracket, the center distance between the middle hole and a short-side hole is 70mm, and the center distance between the middle hole and a long-side hole is 80 mm; the end of the S2 cross beam is mounted on the S10 longitudinal beam through an S13 bracket, an S4 gusset plate and an S12 bracket which are sequentially arranged from top to bottom, a middle hole of the S13 bracket is connected with a first hole at the top of a side rib of the S10 longitudinal beam, a long side hole of the S13 bracket is connected with a second hole at the side rib of the S10 longitudinal beam, and therefore the distance L between the top of a steel rail mounted on the S2 cross beam and the top of the S10 longitudinal beam is 149 mm.

The utility model has the advantages that: the method is simple and convenient to modify, the advantage that the overall height of the S13 bracket is smaller than that of the S12 bracket is ingeniously utilized, the mounting positions of the S13 bracket and the S12 bracket are exchanged, the middle hole is additionally formed in the S13 bracket, and hole positions are alternately arranged on the side rib of the S10 longitudinal beam according to the intervals of 80mm and 70mm to determine the hole opening position of the middle hole of the S13 bracket; the opening of the S10 longitudinal beam is avoided, the D20 type temporary beam is basically not damaged, and the special working conditions that the D20 type temporary beam must be used for the double-track railway with the line spacing smaller than 4.51m after the beam is changed for many times or the existing D20 temporary beam is fully utilized can be effectively solved.

Drawings

Fig. 1 is a schematic view of the installation of a modified D20 type temporary beam on a double-line existing railway.

Fig. 2 is a partial schematic view of a beam of type D20 before modification (mounting points are indicated by solid circles).

FIG. 3 is a detail view of an S12 corbel and an S13 corbel before modification.

Fig. 4 is a schematic view of the installation of the improved D20 type temporary beam on a double-line existing railway.

Fig. 5 is a partial schematic view of a modified D20 type rocker (mounting points are shown as solid circles).

FIG. 6 is a detail view of a modified S12 corbel and S13 corbel.

Detailed Description

The invention will be further described by way of examples with reference to the accompanying drawings:

with reference to fig. 4-5, a double-track existing railway D20 type temporary beam reconstruction mounting structure with a line spacing smaller than 4.51m mainly comprises an S2 cross beam 1, an S10 longitudinal beam 2, an S4 gusset plate 3, an S12 corbel 4 and an S13 corbel 5.

As shown in fig. 6, a middle hole 5a is additionally provided between the two holes of the bracket 5 of S13, and the center distance between the middle hole 5a and the short-side hole is 70mm, and the center distance between the middle hole 5a and the long-side hole is 80 mm. S12 corbel 4 was not modified.

The end of the S2 cross beam 1 is mounted on the S10 longitudinal beam 2 through an S13 bracket 5, an S4 gusset plate 3 and an S12 bracket 4 which are sequentially arranged from top to bottom, namely the S13 bracket 5 is used as an upper bracket, and the S12 bracket 4 is used as a lower bracket. The middle hole 5a of the S13 bracket 5 is connected with the first hole 2a at the top of the side rib of the S10 longitudinal beam 2, the long side hole of the S13 bracket 5 is connected with the second hole 2b of the side rib of the S10 longitudinal beam 2, and the long side hole of the S13 bracket 5 is unused. Thus, when the S4 gusset plates 3 and the S12 corbels 4 are sequentially installed from top to bottom, the gusset plates correspond to holes which are alternately arranged on the side rib of the S10 longitudinal beam 2 according to the intervals of 80mm and 70mm, so that the distance L between the top of the steel rail 6 installed on the S2 cross beam 1 and the top of the S10 longitudinal beam 2 is 149mm, namely the steel rail 6 is raised by 150mm before being improved, namely the height of two hole positions on the side rib of the S10 longitudinal beam 2. Due to the fact that holes are added on the side ribs of the S10 longitudinal beam 2, operation difficulty is very high, the installation positions of the S13 bracket and the S12 bracket are exchanged, and the middle hole is additionally arranged on the S13 bracket, so that the requirement that the distance between the top of the longitudinal beam and the top of a rail is not more than 200mm when the D20 type temporary beam is used for erection with the distance between double lines being less than 4.51m through transformation is met.

Claims

1. The utility model provides a line interval is less than 4.51m double-track existing railway D20 type just roof beam transformation mounting structure, includes S2 crossbeam (1), S10 longeron (2), S4 gusset plate (3), S12 bracket (4) and S13 bracket (5), its characterized in that: a middle hole (5a) is additionally arranged between the two holes of the S13 bracket (5), the center distance between the middle hole (5a) and the side hole at the short side is 70mm, and the center distance between the middle hole (5a) and the side hole at the long side is 80 mm; the end of the S2 cross beam (1) is installed on the S10 longitudinal beam (2) through an S13 bracket (5), an S4 gusset plate (3) and an S12 bracket (4) which are sequentially arranged from top to bottom, a middle hole (5a) of the S13 bracket (5) is connected with a first hole (2a) at the top of a side rib of the S10 longitudinal beam (2), and a long side hole of the S13 bracket (5) is connected with a second hole (2b) at the side rib of the S10 longitudinal beam (2), so that the distance L between the top of a steel rail (6) installed on the S2 cross beam (1) and the top of the S10 longitudinal beam (2) is 149 mm.

2. The modified mounting structure of the existing D20 type temporary beam of the double-track railway with the line spacing smaller than 4.51m according to claim 1, wherein: the diameter of the middle hole (5a) is 22 mm.