Ballastless line steel rail inner shifting device

Abstract

The utility model relates to a ballastless line steel rail internal shifting device, which comprises a main slide way, an auxiliary slide way and a pressurizing module, the main slide way comprises a carbon steel frame, a hydraulic cylinder mounting groove is arranged on the carbon steel frame, a hydraulic cylinder of the pressurizing module is mounted in the hydraulic cylinder mounting groove, a pushing surface of the hydraulic cylinder faces a steel rail, and the pressurizing module is arranged on the auxiliary slide way. Main slideway lateral nylon blocks are arranged on the two sides of the carbon steel frame respectively, and main slideway supporting nylon blocks are filled in the carbon steel frame; the auxiliary slide way comprises an auxiliary slide way nylon block, and the auxiliary slide way nylon block is arranged below the steel rail in a cushion mode. The rail shifting device has the advantages that the economical efficiency is good, safety and stability are achieved, operation is easy and convenient, stress concentration and steel rail indentation generation are prevented through indirect pressure application of the steel base, steel rail equipment is effectively protected, the rail web and the rail bottom of the steel rail are free of scratches such as indentation in the rail shifting process, and the maximum stress of each structure of the rail shifting device is smaller than the yield strength 355 MPa of steel.

Description

Technical Field

[0001] This utility model relates to the field of maintenance technology for ballastless railway track equipment, and in particular to an internal guide device for ballastless track rails. Background Technology

[0002] In recent years, with the successive opening and operation of ballastless high-speed railway lines, various defects have also emerged. Once the track foundation deforms, it will cause changes in the track geometry, which may result in train speed restrictions or even service interruptions. Ballastless track defects have become a major and difficult problem in the construction and subsequent operation and maintenance of my country's high-speed railways.

[0003] Track slab repair is becoming increasingly frequent. Track slab repair requires first adjusting the rails to provide a working surface for the repair. With the development of railway maintenance mechanization, the track maintenance department has shifted from manual rail adjustment with crowbars to mechanical rail adjustment. For example, in the replacement of severely damaged CRTSI type track slabs, the external rail adjustment device is used. However, the technical solution of external rail adjustment to provide working space is limited by the cross-sectional dimensions of different track structures and has limited application. Some track slab defects require the internal rail adjustment to provide a working surface for the repair, such as the repair of camber on ballastless tracks with shoulders. In addition, there is also a need for internal rail adjustment when repairing other structural defects on the track abutment.

[0004] Considering the current status of track slab support platform defect treatment and the shortcomings of existing external shifting devices on the market, there is an urgent need to develop a portable, safe, stable, and economical internal shifting device for ballastless tracks. Summary of the Invention

[0005] The purpose of this utility model is to provide a rail inward adjustment device for ballastless tracks, which can mechanically adjust the rails of CRTSⅡ type, CRTSⅢ type slab ballastless tracks and CRTSⅠ type double block ballastless tracks (SK-Ⅱ type sleepers).

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A rail-aligning device for ballastless track, characterized in that it comprises a main slide rail, a secondary slide rail, and a pressurizing module, wherein the main slide rail comprises a carbon steel frame, and a hydraulic cylinder mounting groove is provided on the carbon steel frame; the hydraulic cylinder of the pressurizing module is installed in the hydraulic cylinder mounting groove, the pushing surface of the hydraulic cylinder faces the rail; lateral nylon blocks for the main slide rail are respectively provided on both sides of the carbon steel frame, and the main slide rail supporting nylon blocks are filled inside them; the secondary slide rail comprises a secondary slide rail nylon block, and the secondary slide rail nylon block is placed under the rail.

[0008] The carbon steel frame is provided with a spacing adjustment seat at its outer end.

[0009] The carbon steel frames of the main slides located on both sides of the track are connected by connectors to form an integral structure.

[0010] Two sets of auxiliary slide nylon blocks are arranged along the extension direction of the rail, which are divided into Type I auxiliary slide nylon blocks and Type II auxiliary slide nylon blocks. The Type II auxiliary slide nylon blocks are adjacent to the main slide. The Type II auxiliary slide nylon blocks on both sides are connected by connectors to form a whole and cover the entire lateral displacement of the rail during inward movement.

[0011] A top rail protection block is provided between the pushing surface of the hydraulic cylinder and the rail.

[0012] The carbon steel frame is provided with a plurality of hydraulic cylinder mounting grooves, and the hydraulic cylinder is mounted in any of the hydraulic cylinder mounting grooves via a hydraulic cylinder flange.

[0013] The advantages of this utility model are: good economy, safety and stability, and simple operation. It prevents stress concentration and rail indentation by indirectly applying pressure through the steel base, effectively protecting the rail equipment. During the rail shifting process, there are no indentations or scratches on the rail web and rail bottom, and the maximum stress of each structure of the rail shifting device is less than the yield strength of steel (355 MPa). The rail shifting device can complete the shifting of a 100-meter-long rail within 30 minutes, with high work efficiency, suitable for high-speed rail maintenance windows, while avoiding the risk of rail derailment during rail shifting. It can meet the needs of ballastless track support platform repair, as well as rail gas pressure welding and rail weld adjustment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the main slide structure in this utility model;

[0016] Figure 3 This is a schematic diagram of the secondary slide structure of this utility model;

[0017] Figure 4 This is a rendering of the assembled product.

[0018] Figure 5 This is an application effect diagram of this utility model. Detailed Implementation

[0019] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:

[0020] like Figure 1-5As shown in the figure, markings 1-23 represent: Type I auxiliary slide nylon block 1, slide connector 2, Type II auxiliary slide nylon block 3, top rail protection block 4, hydraulic cylinder flange 5, hydraulic cylinder 6, rail limit block 7, spacing adjustment seat 8, main slide carbon steel frame 9, main slide lateral nylon block 10, main slide support nylon block 11, rail support platform 12, ballastless track slab 13, rail 14, top rail protection block 15, main slide support nylon block 16, main slide lateral nylon block 17, main slide carbon steel frame 18, spacing adjustment seat 19, hydraulic cylinder flange 20, oil cylinder 21, Type II auxiliary slide nylon block 22, and Type I auxiliary slide nylon block 23.

[0021] Example: Figures 1 to 5 As shown, in this embodiment, the rail inward shifting device for ballastless track is used to shift the railway rail 14 on the ballastless track slab 13 inward, providing ample working space for the track support platform 12.

[0022] The rail internal shifting device for ballastless track in this embodiment mainly includes three parts: a main slide, a secondary slide, and a pressurizing module. The main slide provides support and shifting reaction force to the railway rail 14 during internal shifting. The secondary slide provides support when the railway rail 14 is displaced. The pressurizing module provides shifting force for the internal shifting operation. At the same time, the top rail protection block 4 ensures that the railway rail 14 is subjected to uniform force during the pressurization process, preventing damage such as indentations.

[0023] like Figure 1 As shown, since there are two steel rails 14 on the line, when the two steel rails 14 are adjusted inward, an inward adjustment unit is set up on each of the two steel rails 14. That is, each steel rail 14 is adjusted inward through a set of inward adjustment units. The two sets of inward adjustment units are connected to each other to ensure the inward adjustment effect and safety when the two steel rails 14 are adjusted inward at the same time.

[0024] Combination Figure 2 As shown, the main slide body of the inner sliding unit is a carbon steel frame. The carbon steel frame is erected at the bottom of the rail 14. Two sections of the carbon steel frame are respectively set below the rail 14 on both sides, including the carbon steel frame 9 and the carbon steel frame 18. The two are connected by bolts to form an integral structure.

[0025] Taking the main slide carbon steel frame 9 as an example, its main slide lateral nylon block 10 and main slide support nylon block 11 are respectively installed on the outer and inner sides of the main slide carbon steel frame 9, and their geometric dimensions are completely matched with the geometric dimensions of the main slide carbon steel frame 9; the main slide lateral nylon block 10 is used to laterally limit the main slide carbon steel frame 9 to ensure its lateral stability, while the main slide support nylon block 11 is used to improve the structural strength of the main slide carbon steel frame 9. As for the main slide carbon steel frame 18, it is equipped with main slide support nylon block 16 and main slide lateral nylon block 17 in the same way. Bolt holes are provided at the outer ends of the main slide carbon steel frame 9 and the main slide carbon steel frame 18, respectively, so that the spacing adjustment seat 8 and the spacing adjustment seat 19 can be directly installed. The spacing adjustment seat 8 fixes the main slide carbon steel frame to the ballastless track slab 13 under the rail 14 by means of adjustable length bolts. The adjustment range of the spacing adjustment seat is 2400mm-2800mm.

[0026] Hydraulic cylinder mounting grooves are respectively provided on the main slide carbon steel frame 9 and the main slide carbon steel frame 18. The geometric dimensions of the hydraulic cylinder flange 5 and the hydraulic cylinder flange 20 are completely matched with the hydraulic cylinder mounting grooves provided in the main slide carbon steel frame 9 or the main slide carbon steel frame 18. The hydraulic cylinder 5 and the hydraulic cylinder 21 can be installed on the main slide carbon steel frame 9 and the main slide carbon steel frame 18 respectively through the hydraulic cylinder flange 5 and the hydraulic cylinder flange 20.

[0027] like Figure 3 As shown, the main body of the secondary slide of the inner sliding unit is located between the bottom of the rail 14 and the ballastless track slab 13. It does not provide sliding force and its main function is to raise the rail and reduce the lateral friction during the sliding process.

[0028] The main body of the secondary slide rail consists of Type I secondary slide rail nylon blocks 1 and 23, and Type II secondary slide rail nylon blocks 3 and 22. The height of each nylon block is greater than the height of the rail support platform 12, and the coefficient of friction between the nylon blocks and the rail 14 is relatively small. Among them, Type II secondary slide rail nylon blocks 3 and 22 are secondary slide rails adjacent to one side of the main slide rail. The adjacent ends of the two are provided with bolt holes, which can be connected to form a whole through the slide rail connector 2. Type I secondary slide rail nylon blocks 1 and 23 are directly arranged below the railway rail 14 and are arranged at a certain distance from the two Type II secondary slide rail nylon blocks to provide support.

[0029] Combination Figure 4As shown, the arc sides of the top rail protection block 4 and the top rail protection block 15 are respectively matched with the rail web structure of the two rails 14. The flat side of the top rail protection block 4 and the top rail protection block 15 is connected to the hydraulic rod of the hydraulic cylinder. When the internal pressure is applied through the hydraulic cylinder flange 5 and the hydraulic cylinder 6 (or the hydraulic cylinder flange 20 and the hydraulic cylinder 21), the top rail protection block 4 and the top rail protection block 15 can be completely and tightly aligned with the rail web of the two railway rails 14 respectively.

[0030] Combination Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment, when in use, it is used to... Figure 1 Taking the inward shifting operation of rail 14 in the lower right corner as an example, the following steps are included:

[0031] 1) Loosen the fasteners and install the gauge tie rods at the farthest ends before and after the rail shifter.

[0032] 2) After the railway rail 14 is raised to a certain height using the track lifter, the main slide support nylon block 16, the main slide lateral nylon block 17, and the main slide carbon steel frame 18 are placed between the railway rail 14 and the ballastless track slab 13 and assembled with bolts. Finally, the positions of the main slide carbon steel frames 18 and 9 on both sides are fixed by the spacing adjustment seat 8 and the spacing adjustment seat 19.

[0033] 3) Type II auxiliary slide nylon blocks 3 and 22 are installed under the railway rail 14 on the side near the main slide carbon steel frame 9, forming a whole through the slide connector 2 and covering the entire lateral displacement of the rail 14. Type I auxiliary slide nylon blocks 1 and 23 are placed under the railway rail 14 on the side near the gauge tie rod. The distance between the two types of nylon blocks is maintained at approximately 12-16m.

[0034] 4) Install the top rail protection block 15 at the web of the railway rail 14, pressurize and push it inward through the hydraulic cylinder flange 20 and hydraulic cylinder 21, and after the left and right rails are locked, place the rail limit block 7 at the main slide side nylon block 17 of the main slide carbon steel frame 9 to lock the rail.

[0035] 5) After the construction and renovation are completed, remove the rail limit block 7 and simultaneously depressurize the hydraulic cylinder 21. Install the top rail protection block 15, hydraulic cylinder flange 20, and hydraulic cylinder 21 in the groove of the carbon steel frame 19 of the main slide between the left and right railway rails 14. Apply reverse pressure to reset the railway rail 14, pull out the main and auxiliary slides and accessories, lower the track and install fasteners.

[0036] In the specific implementation of the embodiment: the fastener loosening length should be determined according to parameters such as different curve radii and rail temperature differences. When pressurizing the railway rail 14 through hydraulic cylinder flange 5, hydraulic cylinder 6 or hydraulic cylinder flange 20, hydraulic cylinder 21, the rail-shifting force should be manually controlled to be uniformly applied to 20KN. The strength of the top rail protection block 4 and the top rail protection block 15 must be greater than the rebound force when the rail is locked.

[0037] The main slide rail carbon steel frame 9 and the main slide rail carbon steel frame 19 are made of No. 45 carbon steel. The secondary slide rail is made of high-strength nylon.

[0038] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A ballastless track rail inner shifting device, characterized in that: It includes a main slide, an auxiliary slide and a pressurizing module, wherein the main slide includes a carbon steel frame, a hydraulic cylinder mounting groove is arranged on the carbon steel frame, the hydraulic cylinder of the pressurizing module is installed in the hydraulic cylinder mounting groove, the push surface of the hydraulic cylinder faces the rail, main slide lateral nylon blocks are respectively arranged on both sides of the carbon steel frame, and the main slide supporting nylon blocks are filled inside; the auxiliary slide includes an auxiliary slide nylon block, and the auxiliary slide nylon block is padded under the rail.

2. The ballastless track rail inner shifting device according to claim 1, characterized in that: The outer end of the carbon steel frame is provided with a spacing adjustment seat.

3. The ballastless track rail inner shifting device according to claim 1, characterized in that: The carbon steel frames of the main slideways located on both sides of the line are connected by connecting pieces to form an integral structure.

4. The ballastless track rail inner shifting device according to claim 1, characterized in that: Two groups of auxiliary slide nylon blocks are arranged along the extension direction of the rail, which are divided into type I auxiliary slide nylon blocks and type II auxiliary slide nylon blocks. The type II auxiliary slide nylon blocks are adjacent to the main slide, and the type II auxiliary slide nylon blocks on both sides are connected by connecting parts to form a whole and cover the entire lateral displacement stroke when the rail is shifted inward.

5. The ballastless track rail inner shifting device according to claim 1, characterized in that: A top rail protection block is arranged between the top pushing surface of the hydraulic cylinder and the steel rail.

6. The ballastless track rail inner shifting device according to claim 1, characterized in that: A plurality of hydraulic cylinder mounting grooves are provided on the carbon steel frame, and the hydraulic cylinder is mounted in any of the hydraulic cylinder mounting grooves via a hydraulic cylinder flange.

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