A long rail welding platform device for a subway operation line base and its usage method

Abstract

The present invention relates to the technical field of track engineering, and specifically relates to a long rail welding platform device and a usage method for a subway operation line base, including: a welding work area, wherein the welding work area is provided with a transfer structure for transferring rails; a plurality of roller structures extending in a parallel direction from the welding work area to the existing line, and the roller structure includes a support frame and a roller assembly arranged on the support frame, and the support frame is used to support the roller assembly to the same height as the existing line. Compared with the prior art, the combined structure of the present invention is simple and feasible, easy to install and disassemble, and its advantages are: it can maintain the normal operation of the subway line, does not affect the travel of passengers, ensures the safety of subway operation, utilizes the original subway operation line vehicle base to build a long rail welding platform, welds 25m rails into 100m long rails, transports them to the underground line to replace the subway, and greatly improves the replacement speed.

Description

Technical Field

[0001] The present invention relates to the technical field of track engineering, and specifically relates to a long rail welding platform device and a usage method for a subway operation line base. Background Art

[0002] With the expansion of the domestic subway construction scale, problems such as obsolete equipment, track wear, rail material aging, and ballast cracking have gradually emerged in the existing subway operation lines. Line maintenance will become a new industry. Due to the long operation time of the subway, the fatigue period of the rails has reached the service life. The wear of the working edge of the rails results in poor high smoothness of the track. Track settlement, rust, etc. are serious, and the braking sound when entering and leaving the station is harsh, affecting the comfort and safety of passengers. It is urgent to replace the rails.

[0003] Currently, 25m rails are commonly used for rail replacement on domestic subway operation lines. The 25m rails are transported to the section where replacement is required on the underground line, and then the 25m rails are welded into long rails before replacement. Using 25m rails for replacement has a long construction period. The processes of rail transportation, welding, and replacement are all completed within the skylight operation points after the subway is out of service. There are high safety hazards and a large investment in protection and supervision. If one process lags behind, it will affect the train operation time of the next day. Summary of the Invention

[0004] The purpose of the present invention is to solve the deficiencies of the existing technology and provide a long rail welding platform device and a usage method for a subway operation line base, which utilize the existing subway vehicle base line to realize the welding and replacement of long rails.

[0005] To achieve the above purpose, a long rail welding platform device for a subway operation line base is designed, including: a welding work area, which is provided with a transfer structure for transferring rails; a plurality of roller structures extending in a parallel direction from the welding work area to the existing line. The roller structure includes a support frame and a roller assembly arranged on the support frame. The support frame is used to support the roller assembly to the same height as the existing line.

[0006] The present invention also has the following preferred technical solutions:

[0007] The support frame is an octagonal support frame.

[0008] The octagonal support frame includes a first support member and a second support member symmetrically arranged on the left and right. The width between the tops of the first support member and the second support member is less than the width between the bottoms of the first support member and the second support member, and a transverse reinforcement member is also provided between the first support member and the second support member.

[0009] The width between the tops of the first support member and the second support member is 0.8 m, the width between the bottoms of the first support member and the second support member is 1.5 m, and a transverse tie rod is provided between the first support member and the second support member at a height of 0.2 m from the ground.

[0010] Support bases are respectively provided at the bottoms of the first support member and the second support member, and reserved holes are provided on the support bases for connection to the ground through expansion bolts.

[0011] The welding platform device further includes a transverse platform extending in a direction parallel to the existing line from the welding work area. The transverse platform includes transverse support members arranged at intervals, and each transverse support member is supported to the same height of the existing line through a vertical support member.

[0012] A support base is provided at the bottom of the vertical support member, and a reserved hole is provided on the support base for connection to the ground through an expansion bolt.

[0013] A rail storage area is also provided on one side of the welding work area.

[0014] The roller shaft assembly includes a first roller shaft rotatably connected to a support frame and a second roller shaft coaxially arranged with the first roller shaft, and the radius of the second roller shaft is greater than the radius of the first roller shaft.

[0015] The present invention also relates to a method for using the long rail welding platform device for a subway operation line base as described above. The method is as follows: Weld the rails section by section in the welding work area. After welding each section of the rail, longitudinally slide the rail through the roller shaft structure and then weld the next section of the rail, and slide the rail to the storage site through the roller shaft structure after welding is completed.

[0016] Advantages of the Invention

[0017] Compared with the prior art, the combined structure of the present invention is simple and feasible, easy to install and disassemble, and its advantages are as follows: It can maintain the normal operation of the subway line, does not affect the travel of passengers, ensures the safety of subway operation, utilizes the original subway operation line vehicle base to build a long rail welding platform, welds 25 m rails into 100 m long rails, and transports them to the underground line to replace the subway, greatly improving the replacement speed. The main advantages are as follows:

[0018] (1) Make full use of the terrain of the existing base to set up the long rail welding platform, reduce the damage to the lines and facilities in the existing base, and save land.

[0019] (2) Weld 25 m rails into 100 m long rails through the long rail welding platform of the base, reduce the impact on subway operation, improve the construction efficiency of rail replacement, and greatly save the construction cost of rail replacement.

[0020] (3) After the construction of the long rail welding platform at the base is completed, it can be used on other lines and recycled, saving construction costs. Brief Description of the Drawings

[0021] Figure 1 The cross-sectional view of the rail welding platform is exemplarily shown.

[0022] Figure 2 The cross-sectional view of the roller structure fixed to the ground is exemplarily shown.

[0023] Figure 3 The cross-sectional view of the roller structure is exemplarily shown.

[0024] Figure 4 The plan view of the roller structure is exemplarily shown.

[0025] Figure 5 The schematic plan view of the long rail welding at the base is exemplarily shown.

[0026] As shown in the figure, in the figure: 1. Long rail 2. Roller 3. Roller 4. I-beam 5. Existing line subgrade 6. Hardened ground 7. Expansion bolt 8. Roller structure 9. Existing line 10. Gantry crane 11. Rail storage area 12. Welding work area Detailed Embodiment

[0027] The present invention will be further described below with reference to the accompanying drawings. The structure and principle of this device and method are very clear to those skilled in the art. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] This embodiment provides a long rail welding platform device for the base of the subway operation line, including: a welding work area, and a transfer structure for transferring rails is provided in the welding work area; a plurality of roller structures extending in the parallel direction of the existing line from the welding work area, and the roller structure includes a support frame and a roller assembly arranged on the support frame, and the support frame is used to support the roller assembly to the same height as the existing line.

[0029] The usage method of the long rail welding platform device for the base of the subway operation line is as follows: weld the rails section by section in the welding work area. After welding each section of the rail, longitudinally slide the rail through the roller structure and then weld the next section of the rail, and slide the rail to the storage site through the roller structure after welding is completed.

[0030] The long rail welding platform device for the base of the subway operation line will be further exemplarily described below with reference to the accompanying drawings.

[0031] See Figure 1As shown, the main components of the long rail welding platform device for the subway operation line base, and the existing structures and terrain based on which it is built include: roller shaft assemblies, roller shafts, roller shafts, I-beams, existing railway subgrades, hardened ground, expansion bolts, roller shaft devices, existing railway lines, gantry cranes, rail storage areas, and welding work areas.

[0032] See Figure 2 、 Figure 3 and Figure 4 As shown, the roller shaft assembly includes a first roller shaft rotatably connected to a support frame, and a second roller shaft coaxially arranged with the first roller shaft, and the radius of the second roller shaft is greater than the radius of the first roller shaft. For example, the second roller shaft is a roller shaft, and the first roller shaft is a roller shaft. The roller shaft assembly is connected to the eight-shaped support frame made of I-beams. The net width of the roller path is 0.6m, and the base size is 0.8m in length and 0.3m in width.

[0033] The eight-shaped support frame includes a first support member and a second support member symmetrically arranged on the left and right. The width between the tops of the first support member and the second support member is less than the width between the bottoms of the first support member and the second support member, and a transverse reinforcement member is further provided between the first support member and the second support member. Support bases are respectively provided at the bottoms of the first support member and the second support member, and reserved holes are provided on the support bases for connecting to the ground through expansion bolts. For example, see Figure 2 As shown, the eight-shaped support frame is processed from I-beams. The upper width is 0.8m, the width of the two I-beams at the bottom is 1.5m, a transverse tie rod is arranged at the position 0.2m above the ground, the height of the roller shaft eight-shaped support frame is 0.85m, and one side leg of the eight-shaped support frame is welded to the transverse platform I-beam.

[0034] The welding platform device further includes a transverse platform extending in the parallel direction from the welding work area to the existing railway line. The transverse platform includes spaced transverse support members, and each transverse support member is respectively supported to the same height of the existing railway line through a vertical support member. For example, see Figure 5 As shown, the length of the long rail welding platform for the base is 120m, the width is 6m, a 20#A transverse I-beam with a length of 5m is provided every 5m, and each transverse I-beam is welded to 3 vertical I-beams to be supported to the same height of the existing railway line. A steel plate is welded at the bottom of the vertical I-beam as a support base, and expansion bolt holes are reserved at the four corners of the steel plate. The base of the vertical I-beam is fixed firmly to the existing hardened road surface by using expansion bolts.

[0035] In this embodiment, the height of the horizontal platform and the support frame is similar to the height of the rails of the existing line. Since there is a height difference between the existing line and the hardened ground, it is necessary to measure the height difference between the existing line and the existing hardened ground, and use I-beams to fix a platform with the same height as the rails of the existing line on the hardened ground. Thus, it is convenient to perform operations such as welding and transferring the rails.

[0036] Embodiment 1

[0037] In this embodiment, by utilizing the existing subway vehicle depot line and the current situation, a long rail storage platform that can weld 25m rails into 100m long rails is planned and constructed, including a welding operation area and a rail storage area. First, 25m rails are welded into 100m long rails in the welding operation area, and then longitudinally slid to the long rail storage area through a roller structure to wait for transportation. During the subway outage time window, the 100m long rails are transported to the underground line replacement section and welded into the replacement length at a selected time window for replacement.

[0038] Specifically, referring to Figure 5 As shown, the 25m rails are lifted into the rail welding working area by a gantry crane with a 10m span at the depot. After welding 2 25m long rails with a rail welding machine, the rails are longitudinally slid through the roller structure and then another 25m is welded until the length of the welded long rail reaches 100m.

[0039] Referring to Figure 1 、 5 As shown, the long rail welding platform slides the welded long rails to the storage site through a roller structure.

[0040] During subsequent use, an L-shaped cantilever crane carried by a flatbed truck of a long rail transport train is used to lift the long rails onto the flatbed truck of the transport train, and the long rail transport train uses the subway outage time window to transport the welded long rails to the section to be replaced for construction.

Claims

1. A long rail welding platform device for a subway operation line base, characterized in that Including: A welding work area, in which a transfer structure for transferring steel rails is provided. A plurality of roller structures extending in a direction parallel to the existing line from the welding work area. The roller structure includes a support frame and a roller assembly arranged on the support frame. The support frame is used to support the roller assembly to the same height as the existing line. The support frame is an inverted V-shaped support frame. The inverted V-shaped support frame includes a first support member and a second support member symmetrically arranged on the left and right. The width between the tops of the first support member and the second support member is smaller than the width between the bottoms of the first support member and the second support member, and a transverse reinforcement member is also provided between the first support member and the second support member. The width between the tops of the first support member and the second support member is 0.8 m, the width between the bottoms of the first support member and the second support member is 1.5 m, and a transverse tie rod is provided between the first support member and the second support member at a height of 0.2 m from the ground. The welding platform device further includes a transverse platform extending in a direction parallel to the existing line from the welding work area. The transverse platform includes spaced transverse support members, and each transverse support member is supported to the same height as the existing line through a vertical support member.

2. The long rail welding platform device for a subway operation line base according to claim 1, characterized in that Support bases are respectively provided at the bottoms of the first support member and the second support member, and reserved holes are provided on the support bases for connection to the ground through expansion bolts.

3. The long rail welding platform device for a subway operation line base according to claim 1, characterized in that A support base is provided at the bottom of the vertical support member, and a reserved hole is provided on the support base for connection to the ground through expansion bolts.

4. The long rail welding platform device for a subway operation line base according to claim 1, characterized in that A steel rail storage area is further provided on one side of the welding work area.

5. The long rail welding platform device for a subway operation line base according to claim 1, characterized in that The roller assembly includes a first roller rotatably connected to the support frame and a second roller coaxially arranged with the first roller. The radius of the second roller is larger than the radius of the first roller.

6. A method for using the long rail welding platform device for a subway operation line base according to claim 1, characterized in that The method is as follows: Weld the steel rails section by section in the welding work area. After welding each section of the steel rail, longitudinally slide the steel rail through the roller structure and then weld the next section of the steel rail. After welding is completed, slide the steel rail to the storage site through the roller structure.

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