Steel shell sleeper for ballastless track bed

Abstract

The utility model relates to the technical field of ballastless track beds, in particular to a steel shell pillow for a ballastless track bed, the steel shell pillow is a formed hollow steel shell, fastener sleeves are respectively pre-buried on two sides of the steel shell, a steel truss is arranged on the bottom surface of the middle of the steel shell, and the steel truss is connected with the fastener sleeves. The middle position of the steel shell where the steel truss is located is lower than the two sides of the steel shell, that is, the steel shell extends from the outer side to the middle line direction and is provided with a part which partially inclines downwards. The light steel shell sleeper has the advantages that the light steel shell sleeper is light in weight, steel can be recycled, and the steel structure is high in strength and good in durability; the ballast bed concrete is reliably connected, and the use performance is ensured; and a fastener sleeve is reserved, so that construction can be facilitated, and the good track geometric shape and position keeping capacity is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ballastless track bed, in particular to a steel shell pillow for the ballastless track bed. Background Art

[0002] At present, ballastless track beds mostly use concrete sleepers, and a few use composite sleepers. However, concrete sleepers are heavy, inconvenient to produce and transport, and have some impact on the environment during production; while composite sleepers are expensive, difficult to maintain their geometric shape for a long time, and have poor durability. If concrete sleepers are directly replaced with pure steel sleepers, they will be heavy, expensive, and uneconomical. Summary of the invention

[0003] The purpose of the utility model is to provide a steel shell sleeper for ballastless track bed in accordance with the above-mentioned deficiencies of the prior art. By using a steel shell as a sleeper and coordinating related structures, the manufacturing cost of the sleeper is effectively reduced and the construction is facilitated while ensuring the performance of the sleeper.

[0004] The purpose of this utility model is achieved by the following technical solutions:

[0005] A steel shell pillow for ballastless track bed, characterized in that: the steel shell pillow is a formed internal hollow steel shell, fastener sleeves are pre-embedded at both sides of the steel shell, a steel truss is arranged on the bottom surface of the middle position of the steel shell, the middle position of the steel shell where the steel truss is located is lower than the positions on both sides thereof, that is, the steel shell has a partially downwardly inclined portion extending from the outside toward the centerline direction.

[0006] The fastener sleeve comprises a steel sleeve and a nylon sleeve, wherein the steel sleeve is welded and fixed to the steel shell, and the nylon sleeve is arranged in the steel sleeve.

[0007] Both ends of the steel shell pillow are provided with reserved grooves for sealant for later caulking.

[0008] The shell thickness of the steel shell pillow is 5 mm.

[0009] The advantages of the utility model are: the light steel shell pillow is light in weight, the steel can be recycled and reused, the steel structure is strong and durable; it can be reliably connected to the track bed concrete to ensure performance; the fastener sleeve is reserved to facilitate construction and has good track geometry retention capability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a plan view of the utility model;

[0011] Figure 2 for Figure 1 AA section view in the figure;

[0012] Figure 3 for Figure 2 BB section view in. DETAILED DESCRIPTION

[0013] The following is a further detailed description of the features of the present invention and other related features through embodiments in conjunction with the accompanying drawings to facilitate understanding by technicians in the same industry:

[0014] like Figure 1-3 As shown, the marks 1-5 in the figure respectively represent: steel shell 1, steel casing 2, nylon casing 3, steel truss 4, and sealant 5.

[0015] Example: Figures 1 to 3 As shown, the main body of the steel shell sleeper for ballastless track bed in this embodiment is a steel shell 1, the interior of which is a hollow structure. The performance of the material itself is used to provide the required strength for the sleeper, so as to reduce the overall weight of the sleeper for construction, especially lifting and transportation, and can also further reduce the project cost.

[0016] In this embodiment, if Figure 2 As shown, fastener sleeves composed of a steel sleeve 2 and a nylon sleeve 3 are respectively arranged on both sides of the steel shell 1, wherein the steel sleeve 2 is welded and fixed to the steel shell 1, and the nylon sleeve 3 is arranged inside the steel sleeve 2. When in use, the steel sleeve 2 and the nylon sleeve 3 are installed simultaneously during the prefabrication process of the steel shell 1, and the arrangement position matches the rail fasteners to be installed later. After the steel shell 1 is installed in place on the ballastless track bed, the rails can be installed at the nylon sleeve 3 through the fasteners, which is convenient for construction.

[0017] A steel truss 4 is provided at the bottom of the middle of the steel shell 1. The steel truss 4 is welded and fixed to the steel shell 1 to form an integral structure. The steel truss 4 is used to strengthen the connection between the steel shell 1 and the ballastless track bed to ensure a stable connection between the steel shell pillow and the ballastless track bed. Figure 2 As shown, the middle position of the steel shell 1 where the steel truss 4 is located is lower than the two side positions of the fastener sleeve, and there is a downwardly inclined extension section from the fastener sleeve position to the steel truss 4 position to achieve transition. In this way, the middle position of the steel shell 1 where the steel truss 4 is located can be closer to the surface position of the ballastless track bed, thereby improving the connection performance between the steel truss 4 and the ballastless track bed.

[0018] like Figure 2 As shown, reserved grooves are respectively arranged at the outer end positions of the steel shell 1, and the reserved grooves are used to fill the sealant 5 later to ensure the sealing of the steel shell 1 and the ballastless track bed, so that water will not enter and cause harm later.

[0019] Although the above embodiments have described the concepts and embodiments of the purpose of the utility model in detail with reference to the accompanying drawings, ordinary technicians in this field can recognize that various improvements and modifications can still be made to the utility model without departing from the scope of the claims, so they are not described one by one here.

Claims

1. A steel shell pillow for ballastless track bed, characterized in that: The steel shell pillow is a formed internal hollow steel shell, with fastener sleeves embedded in both sides of the steel shell. A steel truss is arranged on the bottom surface of the middle part of the steel shell. The middle part of the steel shell where the steel truss is located is lower than the two sides thereof, that is, the steel shell has a partially downwardly inclined portion extending from the outside toward its centerline.

2. The steel shell pillow for ballastless track bed according to claim 1, characterized in that: The fastener sleeve comprises a steel sleeve and a nylon sleeve, wherein the steel sleeve is welded and fixed to the steel shell, and the nylon sleeve is arranged in the steel sleeve.

3. The steel shell pillow for ballastless track bed according to claim 1, characterized in that: Both ends of the steel shell pillow are provided with reserved grooves for sealant for later caulking.

4. The steel shell pillow for ballastless track bed according to claim 1, characterized in that: The shell thickness of the steel shell pillow is 5 mm.

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