Fastener type track and embedded track system conversion sleeper and construction method thereof

Abstract

The invention relates to the technical field of sleepers, and discloses a fastener type track and embedded track system conversion sleeper and a construction method thereof.The fastener type track and embedded track system conversion sleeper comprises a sleeper body, a fastener mounting hole used for mounting a fastener system is formed in the top face of the sleeper body, and the fastener type track and embedded track system conversion sleeper further comprises a plurality of conversion mounting holes formed in the two sides of the top face of the sleeper body correspondingly; and the fixing steel tank is mounted by matching with the fixing bolts. When the vibration reduction grade of the track needs to be improved, the original fastener system can be disassembled, and then the steel tank of the steel tank type embedded track is directly fixed through the conversion mounting holes in the sleepers, so that the transformation efficiency is obviously improved, free conversion between the fastener type track and the embedded track system can be realized, and when a line is newly built, the steel tank can be directly fixed through the conversion mounting holes in the sleepers. A steel rail is connected with a steel groove through a connecting tool, the steel groove is connected with a sleeper through a fixing bolt, a novel track panel of the steel rail, the connecting tool, the steel groove and the sleeper is formed, and line construction is completed according to a traditional track panel method construction mode.

Description

Technical Field

[0001] The present invention relates to the technical field of sleepers, and specifically to a conversion sleeper for a fastener track and an embedded track system and its construction method. Background Art

[0002] In modern rail transit projects, the structural design of the track is closely related to the vibration reduction effect. Especially in urban rail transit systems (such as subways and light rails), the requirements for vibration reduction and noise reduction are more stringent. The design of traditional conventional sleepers (long sleepers and short sleepers) meets the construction and operation requirements through the structural support of the ballast bed and sleepers. However, with the development of urban rail transit construction, more and more lines need to adopt a steel trough embedded track structure to enhance the vibration reduction and sound insulation effects of the track.

[0003] The steel trough embedded track structure embeds the rail with a steel trough, fills the elastic filling material between the steel trough and the rail, and further absorbs vibration through flexible contact, which can achieve higher vibration reduction performance. However, the conventional sleeper design on the market at present does not consider the installation space of the steel trough of the embedded track. There are some sleepers with a small bolt hole spacing that cannot directly install the steel trough embedded track, and the two systems cannot be effectively converted.

[0004] In response to this, aiming at the installation requirements of the embedded track, the conventional sleeper is improved so that it can directly meet the fixing requirements of the steel trough when connecting the fastener system, which can not only improve the construction efficiency, but also provide a more flexible and feasible reservation plan when the vibration reduction requirements of the subway line are upgraded. Summary of the Invention

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the present invention provides a conversion sleeper for a fastener track and an embedded track system and its construction method, which has the advantage of being able to freely convert between the fastener track and the embedded track system.

[0007] (II) Technical Solutions

[0008] To achieve the above purpose of being able to freely convert between the fastener track and the embedded track system, the present invention provides the following technical solutions: A conversion sleeper for a fastener track and an embedded track system, including a sleeper, on the top surface of which there are fastener installation holes for installing a fastener system, and further including:

[0009] A number of conversion installation holes are respectively opened on both sides of the top surface of the sleeper for fixing and installing a steel trough in cooperation with fixing bolts;

[0010] The distance between two opposite conversion installation holes meets the installation and fixing requirements of the steel trough in the embedded track.

[0011] As a preferred technical solution of the present invention, it further includes a steel rail installed in the steel trough.

[0012] As a preferred technical solution of the present invention, the steel rail is supported in the steel trough through a connecting tooling;

[0013] The connecting tooling includes a bracket, a bottom mounting plate, bottom bolts, a top mounting plate, a clamping block, and a bottom slope cushion block;

[0014] The bottom end of the bracket is fixedly connected with a bottom mounting plate, the bottom mounting plate is fixedly installed in the steel trough through bottom bolts, the top end of the bracket is fixedly connected with a top mounting plate, two groups of clamping blocks are arranged on the top mounting plate for clamping and fixing the steel rail, and a bottom slope cushion block is further padded at the bottom of the steel rail.

[0015] As a preferred technical solution of the present invention, the steel trough is filled with a polymer damping material.

[0016] As a preferred technical solution of the present invention, the sleeper is fixed on the roadbed.

[0017] As a preferred technical solution of the present invention, the conversion installation hole is provided by a pre-embedded sleeve, and the pre-embedded sleeve is arranged in the sleeper.

[0018] As a preferred technical solution of the present invention, the steel trough is formed by connecting a T-shaped steel plate and an L-shaped steel plate to each other.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides a conversion sleeper for a fastener track and an embedded track system, having the following beneficial effects:

[0021] 1. For this conversion sleeper for a fastener track and an embedded track system, when the subway line is under construction, if track vibration reduction is not considered (i.e., a general fastener roadbed) or the vibration reduction level is relatively low (a vibration reduction fastener roadbed), but during the operation process, it is necessary to improve the track vibration reduction level, the original fastener system can be removed, and then through the conversion installation holes on the sleeper, the steel trough of the steel trough type embedded track can be directly fixed, significantly improving the renovation efficiency and enabling free conversion between the fastener track and the embedded track system.

[0022] 2. For this conversion sleeper for a fastener track and an embedded track system, by adding new conversion installation holes on the sleeper, the conventional sleeper can directly adapt to the steel trough type embedded track, reducing the cumbersome procedures for installing the embedded track in the new line and significantly improving the construction efficiency.

[0023] 3. The conversion sleeper for the fastener track and the embedded track system is directly improved on the basis of the conventional sleeper, without completely replacing the existing sleeper production process, reducing the production and transformation costs. At the same time, the improved sleeper can adapt to different types of track systems, with both versatility and flexibility. Description of the Drawings

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0025] Figure 2 It is an enlarged schematic diagram of the sleeper part of the present invention;

[0026] Figure 3 It is an enlarged schematic diagram of the connection tooling part of the present invention;

[0027] Figure 4 It is a schematic diagram of the construction process of the present invention;

[0028] Figure 5 It is a schematic diagram after the steel rails of the present invention are welded.

[0029] In the figure: 1, sleeper; 2, fastener installation hole; 3, conversion installation hole; 4, steel groove; 5, fixing bolt; 6, steel rail; 7, connection tooling; 701, bracket; 702, bottom mounting plate; 703, bottom bolt; 704, top mounting plate; 705, clamping block; 706, bottom slope cushion block; 8, track panel girder; 9, laying area; 10, concrete roadbed; 11, polymer damping material. Detailed Embodiment

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1:

[0032] Please refer to Figures 1-5 , a conversion sleeper for the fastener track and the embedded track system, including a sleeper 1. As Figure 2 shown, a fastener installation hole 2 for installing a fastener system is provided on the top surface of the sleeper 1. Through the fastener installation hole 2, the steel rail 6 can be installed and fixed by using the fastener system.

[0033] In the present invention, two conversion mounting holes 3 are respectively formed on both sides of the top surface of the sleeper 1. The distance between the two conversion mounting holes 3 meets the installation and fixation requirements of the steel channel 4 in the embedded track, and is used to cooperate with the fixing bolts 5 to install and fix the steel channel 4. The steel channel 4 can also be directly fixed to the sleeper 1 through the fixing bolts 5.

[0034] Therefore, when constructing the subway line, if the track vibration reduction is not considered (i.e., the general fastener roadbed) or the vibration reduction level is relatively low (vibration reduction fastener roadbed) during construction, but the track vibration reduction level needs to be improved during operation, the original fastener system can be removed, and then the steel channel 4 of the steel channel type embedded track can be directly fixed through the conversion mounting holes 3 on the sleeper 1, significantly improving the transformation efficiency and enabling free conversion between the fastener type track and the embedded track system.

[0035] When constructing a new line, there are two construction methods. The first method is: adopt the form of "sleeper 1 + ordinary fastener system + rail 6" for rapid construction, that is, the traditional "track-laying method construction". After the bedded reinforced concrete is completed, the ordinary fastener system is removed (i.e., the ordinary fastener system is used as a turnover tool during line construction), and the steel channel 4 of the steel channel type embedded track is fixed by using the conversion mounting holes 3 on the sleeper 1;

[0036] In terms of construction convenience and economy, the fastener systems of the entire subway line can be unified during the construction stage. The ordinary fasteners removed later can also be used for other sections of this line, thus avoiding waste of ordinary fasteners;

[0037] In this embodiment, the steel channel 4 is formed by connecting a T-shaped steel plate and an L-shaped steel plate to each other, and can be directly assembled under the existing rail 6 to form the steel channel 4.

[0038] Another construction method is basically the same as the first method. The difference is that in the first method, the rail 6 is connected to the sleeper 1 through the fastener system, while in this method, the rail 6 is connected to the steel channel 4 through the connecting tooling 7, and the steel channel 4 is then connected to the sleeper 1 through the fixing bolts 5;

[0039] In terms of construction convenience, the first method has mature and reliable construction, high work efficiency, and is a conventional construction method for the cast-in-place bed of the sleeper 1 during the construction of rail transit lines at present; the second method is a new method developed in combination with the structural characteristics of the embedded track and is more suitable for the rapid construction of the embedded track;

[0040] In the present invention, the connecting tooling 7 specifically includes a bracket 701, a bottom mounting plate 702, bottom bolts 703, a top mounting plate 704, a clamping block 705, and a bottom slope cushion block 706. The bottom end of the bracket 701 is fixedly connected to the bottom mounting plate 702, and the bottom mounting plate 702 is fixedly installed in the steel trough 4 through the bottom bolts 703. The top end of the bracket 701 is fixedly connected to the top mounting plate 704. Two groups of clamping blocks 705 are provided on the top mounting plate 704 for clamping and fixing the rail 6. A bottom slope cushion block 706 is also provided under the bottom of the rail 6. In addition, the steel trough 4 is filled with a polymer damping material 11, which not only ensures the fixing effect but also provides excellent vibration damping.

[0041] In the present invention, the sleeper 1 is fixed on the roadbed, such as a concrete roadbed 10 or a ballast roadbed.

[0042] Such as Figure 2 As shown, the conversion mounting holes 3 are provided by embedded sleeves, and the embedded sleeves are embedded in the sleeper 1. When burying and fixing, control the distance between the two embedded sleeves so that the distance between the two conversion mounting holes 3 meets the installation and fixing requirements of the steel trough 4 in the embedded track;

[0043] Alternatively, a transverse groove can also be opened on the sleeper 1 perpendicular to the direction of the rail 6, and the embedded sleeve is slidably installed in the transverse groove. In this way, the position of the embedded sleeve can be freely adjusted, and the distance between the two conversion mounting holes 3 can also be freely adjusted to meet the installation and fixing requirements of the steel trough 4 in different specifications of the embedded track. For the specific sliding method, those skilled in the art can choose according to actual needs. For example, a sliding plate can be installed on the side wall of the embedded sleeve, and a sliding groove can be opened on the inner wall of the transverse groove.

[0044] In the present invention, by adding the conversion mounting holes 3 on the sleeper 1, the conventional sleeper 1 can directly adapt to the steel trough type embedded track, reducing the cumbersome procedures for installing the embedded track in the newly built line, significantly improving the construction efficiency. In addition, by directly improving on the basis of the conventional sleeper 1, there is no need to completely replace the existing sleeper 1 production process, reducing the production and transformation costs. At the same time, the improved sleeper 1 can adapt to different types of track systems, having both versatility and flexibility.

[0045] Embodiment 2:

[0046] Please refer to Figures 1-5 , on the basis of Embodiment 1, a construction method for a conversion sleeper of a fastener track and an embedded track system is provided in this embodiment, which is used for a conversion sleeper of a fastener track and an embedded track system as described in Embodiment 1, and specifically includes the following steps:

[0047] Step 1: Install and fix the steel trough 4 through the conversion mounting holes 3 on the sleeper 1, and place the rail 6 in the steel trough 4;

[0048] Step 2: After blocking both ends of the steel channel 4, pour the polymer damping material 11 into the steel channel 4. After the polymer damping material 11 cures, lock the rail 6.

[0049] Corresponding to Method 1 in Embodiment 1, in Step 1, the sleeper 1 is obtained after removing the fastening system.

[0050] Corresponding to Method 2 in Embodiment 2, in Step 1, the sleeper 1 is newly built without removing the fastening system, and the rail 6 is directly supported in the steel channel 4 through the connecting tooling 7.

[0051] When specifically building a new line, reference can be made to Figure 4 , including the following construction steps:

[0052] Step A1: With the help of the track panel frame 8, in the laying area 9, connect the rail 6, the steel channel 4 and the sleeper 1 to form a 25m unit; then use the track panel method to transport the 25m unit to the designated position and adjust and fix it (the same as the operation method of the conventional sleeper cast-in-place ballast bed).

[0053] Step A2: Pour the concrete ballast bed 10 on-site.

[0054] Step A3: Remove the steel channel 4 and fix the rail 6 at the corresponding sleeper 1 according to the fastening system to form a logistics channel.

[0055] Step A4: Weld the 25m unit rails 6 into long rail bars, remove the fastening system, and reinstall the steel channel 4.

[0056] Step A5: Mix and stir all components of the polymer damping material 11 evenly on-site and pour it into the steel channel 4. After the polymer damping material 11 cures, lock the rail 6.

[0057] Step A6: Repeat the above A1 - A5 to complete the construction of this section of the line.

[0058] When reconstructing the existing line, it specifically includes the following construction steps:

[0059] Step B1: Remove the existing fasteners and the tie plates supporting the fasteners at intervals. Grind and remove rust from the contact surface between the rail 6 and the polymer damping material 11. After cleaning, apply an interface agent to the grinding interface.

[0060] Step B2: Install and fix the steel channel 4 through the conversion installation holes 3 on the sleeper 1. The inner wall of the steel channel 4 needs to be ground in advance, apply an interface agent to both side walls, and apply an adhesive to the bottom to paste the elastic pad.

[0061] Step B3: Block both ends of the steel channel 4. Mix and stir all components of the polymer damping material 11 evenly on-site and pour it into the steel channel 4. After the polymer damping material 11 cures, lock the rail 6.

[0062] Step B4: Repeat the above B1 - B3 to complete the transformation of this section of the circuit.

[0063] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sleeper for converting a fastener-type track into an embedded track system, comprising a sleeper (1), wherein a fastener installation hole (2) for installing a fastener system is provided on the top surface of the sleeper (1), wherein: Also includes: A plurality of conversion installation holes (3) are respectively provided on both sides of the top surface of the sleeper (1) and are used to cooperate with the fixing bolts (5) to install the fixing steel groove (4); The distance between the two opposite conversion mounting holes (3) meets the installation and fixing requirements of the steel groove (4) in the embedded track.

2. The sleeper conversion between the fastener type track and the embedded track system according to claim 1, characterized in that: It also includes a steel rail (6) installed in the steel groove (4).

3. The sleeper conversion between the fastener type track and the embedded track system according to claim 2, characterized in that: The steel rail (6) is supported in the steel groove (4) by a connecting tool (7); The connecting tool (7) comprises a bracket (701), a bottom mounting plate (702), bottom bolts (703), a top mounting plate (704), a buckling block (705) and a bottom slope pad (706); The bottom end of the bracket (701) is fixedly connected to a bottom mounting plate (702), and the bottom mounting plate (702) is fixedly installed in the steel groove (4) through bottom bolts (703). The top end of the bracket (701) is fixedly connected to a top mounting plate (704), and the top mounting plate (704) is provided with two groups of buckling blocks (705) for buckling and fixing the steel rail (6). The bottom of the steel rail (6) is also padded with a bottom slope pad (706).

4. The sleeper conversion between the fastener type track and the embedded track system according to claim 2 or 3, characterized in that: The steel groove (4) is filled with a polymer damping material (11).

5. The sleeper conversion between the fastener type track and the embedded track system according to claim 1, characterized in that: The sleeper (1) is fixed on the ballast bed.

6. The sleeper conversion between the fastener type track and the embedded track system according to claim 1, characterized in that: The conversion installation hole (3) is provided by a pre-embedded sleeve, and the pre-embedded sleeve is arranged in the sleeper (1).

7. The sleeper conversion between the fastener type track and the embedded track system according to claim 1, characterized in that: The steel trough (4) is formed by connecting a T-shaped steel plate and an L-shaped steel plate.

8. A construction method for converting sleepers between a fastener-type track and an embedded track system, used for converting sleepers between a fastener-type track and an embedded track system as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: S1, installing and fixing the steel groove (4) through the conversion installation hole (3) on the sleeper (1), and making the steel rail (6) located in the steel groove (4); S2. After sealing both ends of the steel trough (4), a polymer damping material (11) is poured into the steel trough (4), and the steel rail (6) is locked after the polymer damping material (11) is matured.

9. The construction method for converting sleepers between a fastener-type track and an embedded track system according to claim 8, characterized in that: In the step S1, the sleeper (1) is obtained after removing the fastener system.

10. The construction method for converting sleepers between a fastener-type track and an embedded track system according to claim 8, characterized in that: In the step S1, the steel rail (6) is supported in the steel groove (4) by means of a connecting tool (7).

Images