Ballastless track line overhead device

Abstract

The utility model provides a ballastless track line overhead device which comprises a steel bearing beam, and the steel bearing beam comprises two longitudinal beams which are arranged in parallel and have variable sizes and box-shaped sections and a plurality of cross beams connected with the two longitudinal beams. The temporary wooden sleepers are arranged in gaps between the track plate and the steel bearing beams and gaps between the adjacent steel bearing beams; fasteners are arranged on the longitudinal beams of the steel bearing beams and the temporary sleepers, and steel rails are installed through the fasteners.

Description

Technical Field

[0001] The utility model relates to an overhead device for ballastless track lines, belonging to the technical field of track disease treatment construction. Background Art

[0002] With the rapid development of high-speed railways in China, CRTS I type slab track, CRTS II type slab track, CRTS III type slab track and double-block ballastless track have been widely used. The ballastless track greatly reduces the maintenance workload and improves the passenger comfort at the same time. Especially, the advantage of the ballastless track structure is more prominent in tunnels. However, affected by various factors such as high ground stress, high water pressure, gently inclined rock strata, expansive rock, etc., local tunnel floor heaving and arching, and filling cracking occur in some operating tunnels, resulting in track deformation. Due to the poor adjustability of the ballastless track, speed limits are imposed in many tunnels. The treatment of the tunnel floor of the operating ballastless track tunnel is difficult, costly and slow in progress. Some existing treatment measures are not once and for all.

[0003] For the small-scale local diseases of the ballastless track structure caused by the arching of the tunnel base structure, the damage repair technology can be used for repair. The repair work is simple and easy, and there is no need to demolish or modify the track structure. For the large-area damage of the ballastless track caused by the arching of the tunnel base structure, the tunnel floor structure replacement scheme needs to be adopted. For the demolition and replacement of the tunnel base structure of the ballastless track tunnel, line overhead is required. Summary of the Utility Model

[0004] Aiming at the above technical problems existing in the prior art, the utility model provides an overhead device for ballastless track lines, which can play the role of line overhead when the tunnel base structure of the ballastless track tunnel is demolished and replaced.

[0005] According to one aspect of the utility model, an overhead device for ballastless track lines is provided, including:

[0006] A steel cushion beam, which includes two longitudinals with variable-size box-shaped cross-sections arranged in parallel, and several cross-beams connecting the two longitudinals;

[0007] Temporary wooden sleepers, which are arranged in the gaps between the track slab and the steel cushion beam and between adjacent steel cushion beams;

[0008] Wherein, fasteners are arranged on both the longitudinals of the steel cushion beam and the temporary wooden sleepers, and the rails are installed through the fasteners.

[0009] A further improvement of the utility model is that the cross-beams include two end cross-beams and one middle cross-beam. The end cross-beams are connected to both ends of the longitudinal, and the middle cross-beam is arranged in the middle of the longitudinal.

[0010] A further improvement of the present utility model lies in that the longitudinal beam includes an upper cross plate and a lower cross plate, and two rows of vertical plates are arranged between the upper cross plate and the lower cross plate, and the vertical plates are arranged along the longitudinal direction of the track line;

[0011] A number of rows of stiffening plates are also arranged between the upper cross plate and the lower cross plate, and the stiffening plates are arranged along the longitudinal direction of the track line.

[0012] A further improvement of the present utility model lies in that the widths of the two ends of the upper cross plate and the lower cross plate are smaller, and the width in the middle is larger; a straight bevel edge is provided in the transition area where the width changes, and the joints at both ends of the bevel edge are set to be rounded corners.

[0013] A further improvement of the present utility model lies in that the cross beam includes two groups of steel plates with a U-shaped cross section, the two steel plates are arranged oppositely, and the U-shaped openings face in opposite directions;

[0014] The two ends of the two steel plates are added on both sides of the stiffening plate, and the two steel plates and the stiffening plate are connected by high-strength bolts.

[0015] A further improvement of the present utility model lies in that bearings are provided at both ends of the steel cushion beam, and limit members are provided on both sides of the bearings.

[0016] A further improvement of the present utility model lies in that the limit member includes a roadbed plate made of an angle steel body, reinforcing ribs are arranged in the roadbed plate, and the roadbed plate is connected to the steel cushion beam by bolts.

[0017] A further improvement of the present utility model lies in that the spacing of the temporary wooden sleepers does not exceed 0.65 m.

[0018] A further improvement of the present utility model lies in that both ends of the temporary wooden sleepers are fixed by steel reaction seats.

[0019] A further improvement of the present utility model lies in that a rubber cushion plate and an O-shaped nylon cushion plate are arranged between the fastener and the steel cushion beam, and an O-shaped nylon sleeve and a T-shaped nylon sleeve are arranged on the bolt connecting the fastener and the steel cushion beam.

[0020] According to another aspect of the present utility model, an overhead device for a ballastless track line is also proposed, including:

[0021] A steel cushion beam, the steel cushion beam includes two parallel longitudinal beams with variable-size box-shaped cross sections, and a number of cross beams connecting the two longitudinal beams;

[0022] Temporary wooden sleepers, the temporary wooden sleepers are arranged in the gaps between the track slab and the steel cushion beam and between adjacent steel cushion beams;

[0023] Among them, fasteners are provided on both the longitudinal beam of the steel cushion beam and the temporary wooden sleeper, and the rails are installed through the fasteners.

[0024] The cross beam includes two end cross beams and one intermediate cross beam. The end cross beams are connected to both ends of the longitudinal beam, and the intermediate cross beam is arranged in the middle of the longitudinal beam.

[0025] The longitudinal beam includes an upper transverse plate and a lower transverse plate. Two rows of vertical plates are arranged between the upper transverse plate and the lower transverse plate, and the vertical plates are arranged along the longitudinal direction of the track line.

[0026] Several rows of stiffening plates are also arranged between the upper transverse plate and the lower transverse plate, and the stiffening plates are arranged along the longitudinal direction of the track line.

[0027] The widths of both ends of the upper transverse plate and the lower transverse plate are smaller, and the width in the middle is larger; a straight bevel is provided in the transition area where the width changes, and the connection parts at both ends of the bevel are set as rounded corners.

[0028] The cross beam includes two U-shaped steel plates. The two steel plates are arranged oppositely, and the openings of the U-shapes face in opposite directions.

[0029] Both ends of the two steel plates are added on both sides of the stiffening plate, and the two steel plates and the stiffening plate are connected by high-strength bolts.

[0030] Supports are provided at both ends of the steel cushion beam, and limiters are provided on both sides of the supports.

[0031] The limiter includes a roadbed slab made of an angle steel main body. Reinforcing ribs are arranged in the roadbed slab, and the roadbed slab is connected to the steel cushion beam by bolts.

[0032] The spacing of the temporary wooden sleepers does not exceed 0.65 m; both ends of the temporary wooden sleepers are fixed by steel reaction seats.

[0033] Compared with the prior art, the advantages of the present utility model are as follows:

[0034] According to the ballastless track line overhead device of the present utility model, it can play a role in overhead of the track line when replacing the base structure of the ballastless tunnel. Its construction is faster and does not affect the normal operation of the track line. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The preferred embodiments of the present utility model will be described in detail below with reference to the drawings. In the drawings:

[0036] Figure 1 The structure diagram of the ballastless track line overhead device of an embodiment of the present utility model is shown;

[0037] Figure 2The following is a schematic structural view of a steel cushion beam according to an embodiment of the present utility model;

[0038] Figure 3 The following is a side view of a steel cushion beam according to an embodiment of the present utility model;

[0039] Figure 4 The following is a side view of a ballastless track line overhead device according to an embodiment of the present utility model, showing the connection method with the rail;

[0040] Figure 5 The following is a side view of a ballastless track line overhead device according to an embodiment of the present utility model, showing the connection method with the bearing;

[0041] Figure 6 The following is a schematic structural view of a temporary wooden sleeper according to an embodiment of the present utility model;

[0042] The attached drawings are not drawn to actual scale.

[0043] The meanings of the reference numerals in the attached drawings are as follows:

[0044] 100, steel cushion beam; 200, temporary wooden sleeper; 300, rail; 400, fastener,

[0045] 110, longitudinal beam; 120, cross beam; 130, bearing,

[0046] 111, upper cross plate; 112, lower cross plate; 113, vertical plate; 114, stiffening plate; 115, bevel edge,

[0047] 121, end cross beam; 122, intermediate cross beam; 123, U-shaped steel plate; 124, high-strength bolt,

[0048] 131, ballast bed slab; 132, reinforcing rib;

[0049] 210, steel reaction seat. Detailed implementation manners

[0050] In order to make the technical solutions and advantages of the present utility model clearer, the following further describes the exemplary embodiments of the present utility model in detail with reference to the attached drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than an exhaustive list of all embodiments. And without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0051] Affected by various factors such as high ground stress, high water pressure, gently inclined rock strata, and swelling rock, local floor heave and arching occur in some operating tunnels, and the filling cracks cause track deformation. Due to the poor adjustability of ballastless tracks, speed limits are imposed in many tunnels. It is difficult, costly, and slow to rectify the tunnel floors of operating ballastless track tunnels, and some existing rectification measures are not once and for all.

[0052] For small-scale local diseases of the ballastless track structure caused by the arching of the tunnel base structure, the damage repair technology can be used for repair. The repair work is simple and easy, and there is no need to demolish or modify the track structure. For larger-area damage of the ballastless track caused by the arching of the tunnel base structure, the scheme of replacing the tunnel floor structure needs to be adopted. For the demolition and replacement of the tunnel base structure of the ballastless track tunnel, the line needs to be overhead.

[0053] To solve the above problems, the present utility model proposes a ballastless track line overhead device to solve the problem that the line needs to be overhead when demolishing and replacing the tunnel base structure of the ballastless track tunnel.

[0054] In the embodiment as Figure 1 shown, a ballastless track line overhead device includes:

[0055] A steel cushion beam 100, the steel cushion beam 100 includes two longitudinals 110 with variable-size box-shaped cross-sections arranged in parallel, and several cross-beams 120 connecting the two longitudinals 110; in this embodiment, the longitudinals 110 with variable sizes are those whose widths change in the longitudinal direction.

[0056] Temporary wooden sleepers 200 are arranged in the gaps between the track slab and the steel cushion beam 100 and between adjacent steel cushion beams 100.

[0057] Among them, fasteners 400 are arranged on both the longitudinals 110 of the steel cushion beam 100 and the temporary wooden sleepers 200, and the steel rails 300 are fixed by the fasteners 400.

[0058] In the line overhead device according to this embodiment, the tunneling bottom structure replacement project scope is overhead by the steel cushion beam 100. The steel cushion beam 100 includes longitudinals 110 and cross-beams 120. To ensure that the anchor bolts of the beam end position limiting device have sufficient distance from the edge of the support layer and prevent the concrete edge from being damaged under the action of the lateral swaying force, and at the same time ensure that the beam body has sufficient vertical stiffness, the longitudinals 110 adopt variable-size box-shaped cross-sections.

[0059] In one embodiment, the cross-beam 120 includes end cross-beams 121 and intermediate cross-beams 122. The end cross-beams 121 are connected to both ends of the longitudinals 110, and the intermediate cross-beams 122 are arranged in the middle of the longitudinals 110.

[0060] In the overhead line device according to the present embodiment, preferably two end crossbeams 121 and one intermediate crossbeam 122 are provided on the longitudinal beam 110.

[0061] In one embodiment, the longitudinal beam 110 includes an upper cross plate 111 and a lower cross plate 112. Both the upper cross plate 111 and the lower cross plate 112 are plate-like structures, similar in shape, and arranged vertically aligned.

[0062] Between the upper cross plate 111 and the lower cross plate 112, two columns of vertical plates 113 are provided. The vertical plates 113 are arranged along the longitudinal direction of the track line. A rectangular cavity is formed between the two vertical plates 113 and the upper cross plate 111 and the lower cross plate 112. Inside the rectangular cavity, a number of stiffening plates 114 are provided for partitioning, forming a box structure.

[0063] Preferably, a number of rows of stiffening plates 114 are also provided between the upper cross plate 111 and the lower cross plate 112. The stiffening plates 114 are arranged along the longitudinal direction of the track line.

[0064] The stiffening plates 114 are also provided on the outer sides of the two vertical plates 113.

[0065] In one embodiment, the widths of both ends of the upper cross plate 111 and the lower cross plate 112 are smaller, and the width in the middle is larger; a straight bevel edge 115 is provided in the transition area where the width changes. The connections at both ends of the bevel edge 115 are set as rounded corners.

[0066] In a preferred embodiment, the crossbeam 120 includes two groups of steel plates with a U-shaped cross-section. The two steel plates are arranged oppositely, and the U-shaped openings face in opposite directions.

[0067] Both ends of the two steel plates are added on both sides of the stiffening plate 114, and the two steel plates and the stiffening plate 114 are connected by high-strength bolts 124.

[0068] In one embodiment, supports 130 are provided at both ends of the steel cushion beam 100, and limit members are provided on both sides of the supports 130.

[0069] In one embodiment, the limit member includes a roadbed slab made of an angle steel main body. Reinforcing ribs 132 are provided inside the roadbed slab 131, and the roadbed slab 131 is connected to the steel cushion beam 100 by bolts.

[0070] In one embodiment, the spacing of the temporary wooden sleepers does not exceed 0.65 m.

[0071] In one embodiment, both ends of the temporary wooden sleeper 200 are fixed by steel reaction seats 210.

[0072] In one embodiment, a rubber cushion plate 301 and an O-shaped nylon cushion plate 302 are further provided between the fastener 400 and the steel plate girder 100.

[0073] A sleeve 304 is provided on the bolt 303 connecting the fastener 400 and the steel plate girder 100. The sleeve 304 includes an O-shaped nylon sleeve sleeved on the screw rod of the bolt 303 and a T-shaped nylon sleeve sleeved on the bolt head of the bolt 303.

[0074] In addition to playing a role in vibration reduction, the O-shaped nylon cushion plate more importantly plays an insulating function. The purpose is to keep the rail 300 and the steel plate girder 100 in a non-electrically connected state to ensure that there is no "red band" in the track circuit. Once a "red band" appears, the signal lights are all red and the trains have to stop completely and cannot pass.

[0075] The O-shaped nylon sleeve and the T-shaped nylon sleeve further play an insulating role to prevent the bolt from conducting electricity.

[0076] When constructing the ballastless track line overhead device according to this embodiment, the following steps are included:

[0077] First, remove the fishplate and loosen the fastener 400;

[0078] Symmetrically install the rail 300 slideways on the track slab at intervals of 5 m to 10 m. The guardrail is fastened to the spike holes in the ballastless slab using existing spikes. Install a limit device at the outer end of the slideway to prevent the rail 300 from falling off;

[0079] After installation, manually push the rail 300 outwards by about 700 mm;

[0080] Partially chisel the mortar layer at the four corners of the removed track slab. At the same time, assemble the gantry crane, install the gantry crane traveling channel steel. Use a claw jack or fine adjustment claw at the mortar chiseling position to disassociate and lift the track slab by 100 ± 3 mm. Move the gantry crane above the required track slab, install the C-shaped sling for the track slab, lift the track slab, transport the track slab outside the disease range, and hoist it onto a track flat car or other flat car for transportation outside the tunnel;

[0081] Then clean the original mortar bags until reaching the upper surface of the tunnel filling layer or the bottom plate, and use the gantry crane to lift the overhead device and move it above the excavation trough for erection.

[0082] In one embodiment, when using the steel bearing 130, first, according to the measured elevation, determine the elevation of the bottom or top surface of the overhead device from the rail surface and install the steel bearing 130 and the rubber cushion plate; then move the gantry crane to align the fulcrum of the overhead device with the steel bearing 130, and slowly lower the overhead device until it contacts the rubber cushion plate or mortar bag bearing 130 above the steel bearing 130.

[0083] In another embodiment, when using a mortar bag to pour quick-setting mortar as the support 130, after the steel cushion beam 100 is aligned, the rail 300 is restored and the fine adjustment is completed, a pressing device is set up to prevent the overhead device from floating up when pouring the mortar;

[0084] The pressing device is installed on both sides of the overhead device;

[0085] The pressing device includes an anchor rod, an L-shaped steel frame and a wing nut;

[0086] The anchor rod is embedded by drilling and planting reinforcement, and is anchored with planting reinforcement glue. The anchored anchor rod should be ensured to be in a vertical state;

[0087] After the fine adjustment of the overhead device is completed and the pressing device is installed, pour the mortar bag of the support 130 to form a mortar bag support 130.

[0088] Embodiment 1

[0089] An overhead device for a ballastless track line includes:

[0090] A steel cushion beam 100, the steel cushion beam 100 includes two longitudinals 110 with variable-size box-shaped cross-sections arranged in parallel, and several cross-beams 120 connecting the two longitudinals 110;

[0091] Temporary wooden sleepers, the temporary wooden sleepers are arranged in the gaps between the track slab and the steel cushion beam 100 and between adjacent steel cushion beams 100;

[0092] Among them, fasteners 400 are arranged on both the longitudinal 110 of the steel cushion beam 100 and the temporary wooden sleeper 200, and the rail 300 is installed through the fasteners 400;

[0093] The cross-beam 120 includes two end cross-beams 121 and an intermediate cross-beam 122. The end cross-beams 121 are connected to both ends of the longitudinal 110, and the intermediate cross-beam 122 is arranged in the middle of the longitudinal 110;

[0094] The longitudinal 110 includes an upper cross plate 111 and a lower cross plate 112. Two columns of vertical plates 113 are arranged between the upper cross plate 111 and the lower cross plate 112, and the vertical plates 113 are arranged along the longitudinal direction of the track line;

[0095] Several rows of stiffening plates 114 are also arranged between the upper cross plate 111 and the lower cross plate 112, and the stiffening plates 114 are arranged along the longitudinal direction of the track line;

[0096] The widths of both ends of the upper cross plate 111 and the lower cross plate 112 are smaller, and the width in the middle is larger; a straight bevel 115 is arranged in the transition area where the width changes, and the connection parts at both ends of the bevel 115 are set as rounded corners;

[0097] The cross beam 120 includes two groups of steel plates with a U-shaped cross-section. The two steel plates are arranged oppositely, and the openings of the U-shapes face in opposite directions;

[0098] Both ends of the two steel plates are added to both sides of the stiffening plate 114, and the two steel plates and the stiffening plate 114 are connected by high-strength bolts 124;

[0099] Supports 130 are arranged at both ends of the steel cushion beam 100, and limit members are arranged on both sides of the supports 130;

[0100] The limit member includes a roadbed slab made of an angle steel main body. Reinforcing ribs 132 are arranged in the roadbed slab 131, and the roadbed slab 131 and the steel cushion beam 100 are connected by bolts;

[0101] The spacing of the temporary wooden sleepers does not exceed 0.65 m; both ends of the temporary wooden sleepers 200 are fixed by steel reaction seats 210.

[0102] In this embodiment, the total length of the steel cushion beam 100 is 5000 mm, the width is 2235 mm, the height is 180 mm, the span is 3900 mm, and it is welded and processed with Q345qC steel plates.

[0103] To ensure that the anchor bolts of the beam end position limiting device have sufficient distance from the edge of the bearing layer to prevent the concrete edge from being damaged under the action of the lateral swaying force, and at the same time ensure that the beam body has sufficient vertical stiffness, the longitudinal beam 110 adopts a box-shaped cross-section with variable dimensions, where the two ends of the beam are 972 mm, the upper transverse plate 111 and the lower transverse plate 112 are 530 mm wide, and the middle 2940 mm section of the beam is 775 mm wide.

[0104] The transition form with a bevel edge 115 is adopted in the transition area with different widths, and the radius of the fillets at both ends of the bevel edge 115 is 10 mm.

[0105] The thickness of the upper transverse plate 111 and the lower transverse plate 112 is 30 mm, the cross-sectional dimensions of the two vertical plates 113 remain unchanged at 120 mm × 24 mm, and the center distance is 180 mm. Fastening element anchor bolt holes are arranged on the upper transverse plate 111 of the longitudinal beam 110 according to the design for the installation of the fastening element 400.

[0106] Bolt holes with a diameter of Φ26 mm are arranged at appropriate positions on the vertical plates 113 at both ends of the longitudinal beam 110 for the installation of connecting plates. Stiffening plates 114 are arranged at certain intervals between the vertical plates 113 and the transverse plates, and the stiffening plates 114 are extended out of the flanges at the cross beam 120 for connecting the cross beam 120, and the stiffening plates 114 are densified at the supports 130.

[0107] The support 130 is made of a rubber sheet with a thickness of 10 mm - 30 mm and a steel plate with a thickness of 10 mm, with a size of 0.3 m × 0.53 m. Angle steel is arranged horizontally for limit, and wooden square timbers are used to tightly support below the outside of the beam support point.

[0108] It should be understood that the embodiments disclosed in the present utility model are not limited to the specific structures, processing steps or materials disclosed herein, but should extend to equivalent alternatives of these features understood by those of ordinary skill in the relevant art. It should also be understood that the terms used herein are only for the purpose of describing specific embodiments and do not mean limitation.

[0109] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0110] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0111] Certain terms are used throughout the present application document to refer to specific system components. As those skilled in the art will recognize, the same component can usually be referred to by different names, and thus the present application document does not intend to distinguish components that are different only in name but not in function. The phrase "an embodiment" or "embodiments" mentioned in the specification means that the specific features, structures or characteristics described in connection with the embodiments are included in at least one embodiment of the present utility model. Therefore, the phrases "an embodiment" or "embodiments" that appear throughout the specification do not necessarily all refer to the same embodiment.

[0112] The embodiments of the present utility model are given for purposes of illustration and description, and are not exhaustive or limit the present utility model to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to better illustrate the principles and practical applications of the present utility model, and enable those of ordinary skill in the art to understand the present utility model so as to design various embodiments with various modifications suitable for specific purposes.

[0113] Although the preferred embodiments of the present utility model have been described, additional changes and modifications can be made by those skilled in the art once they learn of the basic creative concept. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and / or modifications that fall within the scope of the present utility model. All changes and / or modifications made in accordance with the embodiments of the present utility model should be covered within the protection scope of the present utility model.

Claims

1. A ballastless track overhead device, characterized in that: include: A steel cushion beam (100), the steel cushion beam (100) comprising two parallel-arranged longitudinal beams (110) of variable size and box-shaped cross-section, and a plurality of transverse beams (120) connecting the two longitudinal beams (110); Temporary wooden sleepers (200), the temporary wooden sleepers (200) being arranged in the gap between the track slab and the steel cushion beam (100) and in the gap between adjacent steel cushion beams (100); Wherein, fasteners (400) are provided on the longitudinal beam (110) of the steel cushion beam (100) and on the temporary wooden sleeper (200), and the steel rail (300) is fixed by the fasteners (400).

2. The ballastless track overhead device according to claim 1, characterized in that: The cross beam (120) comprises two end cross beams (121) and a middle cross beam (122); the end cross beams (121) are connected to both ends of the longitudinal beam (110); and the middle cross beam (122) is arranged in the middle of the longitudinal beam (110).

3. The ballastless track overhead device according to claim 2, characterized in that: The longitudinal beam (110) comprises an upper transverse plate (111) and a lower transverse plate (112), two rows of vertical plates (113) are arranged between the upper transverse plate (111) and the lower transverse plate (112), and the vertical plates (113) are arranged along the longitudinal direction of the track line; A plurality of rows of stiffening plates (114) are also provided between the upper transverse plate (111) and the lower transverse plate (112), and the stiffening plates (114) are arranged along the longitudinal direction of the track line.

4. The ballastless track overhead device according to claim 3, characterized in that: The widths of the upper transverse plate (111) and the lower transverse plate (112) are smaller at both ends and larger in the middle; a straight bevel (115) is provided in a transition zone where the width changes, and the connection points at both ends of the bevel (115) are rounded.

5. The ballastless track overhead device according to claim 4, characterized in that: The crossbeam (120) comprises two sets of steel plates with U-shaped cross-sections, the two steel plates are arranged opposite to each other, and the U-shaped openings are oriented in opposite directions; The two ends of the two steel plates are added to both sides of the stiffening plate (114), and the two steel plates and the stiffening plate (114) are connected via high-strength bolts (124).

6. The ballastless track overhead device according to claim 5, characterized in that: Supports (130) are provided at both ends of the steel cushion beam (100), and limiting members are provided on both sides of the support (130).

7. The ballastless track overhead device according to claim 6, characterized in that: The limiting member comprises a ballast plate made of an angle steel body, a reinforcing rib (132) is arranged inside the ballast plate (131), and the ballast plate (131) is connected to the steel cushion beam (100) by bolts.

8. The ballastless track overhead device according to claim 1, characterized in that: The spacing between the temporary wooden sleepers does not exceed 0.65 m, and both ends of the temporary wooden sleepers (200) are fixed by steel reaction seats (210).

9. The ballastless track overhead device according to claim 8, characterized in that: A rubber pad (301) and an O-type nylon pad (302) are further provided between the fastener (400) and the steel cushion beam (100), and a sleeve (304) is provided on the bolt (303) connecting the fastener (400) and the steel cushion beam (100), and the sleeve (304) comprises an O-type nylon sleeve sleeved on the screw rod of the bolt (303) and a T-type nylon sleeve sleeved under the screw head of the bolt (303).

10. An overhead device for a ballastless track line, characterized in that: include: A steel cushion beam (100), the steel cushion beam (100) comprising two parallel-arranged longitudinal beams (110) of variable size and box-shaped cross-section, and a plurality of transverse beams (120) connecting the two longitudinal beams (110); Temporary wooden sleepers, the temporary wooden sleepers being arranged in the gap between the track slab and the steel cushion beam (100) and in the gap between adjacent steel cushion beams (100); Wherein, fasteners (400) are provided on the longitudinal beam (110) of the steel cushion beam (100) and on the temporary wooden sleeper (200), and the steel rail (300) is installed through the fasteners (400); The cross beam (120) comprises two end cross beams (121) and a middle cross beam (122), wherein the end cross beams (121) are connected to both ends of the longitudinal beam (110), and the middle cross beam (122) is arranged in the middle of the longitudinal beam (110); The longitudinal beam (110) comprises an upper transverse plate (111) and a lower transverse plate (112), two rows of vertical plates (113) are arranged between the upper transverse plate (111) and the lower transverse plate (112), and the vertical plates (113) are arranged along the longitudinal direction of the track line; A plurality of rows of stiffening plates (114) are further provided between the upper transverse plate (111) and the lower transverse plate (112), and the stiffening plates (114) are arranged along the longitudinal direction of the track line; The widths of the upper transverse plate (111) and the lower transverse plate (112) are smaller at both ends and larger in the middle; a straight bevel (115) is provided in a transition zone where the width changes, and the connection points at both ends of the bevel (115) are rounded; The crossbeam (120) comprises two sets of steel plates with U-shaped cross-sections, the two steel plates are arranged opposite to each other, and the U-shaped openings are oriented in opposite directions; The two ends of the two steel plates are added to both sides of the stiffening plate (114), and the two steel plates and the stiffening plate (114) are connected via high-strength bolts (124); Supports (130) are provided at both ends of the steel cushion beam (100), and limiting members are provided on both sides of the support (130); The limiting member comprises a ballast plate made of an angle steel body, a reinforcing rib (132) is arranged inside the ballast plate (131), and the ballast plate (131) is connected to the steel cushion beam (100) by bolts; The spacing between the temporary wooden sleepers does not exceed 0.65 m; and both ends of the temporary wooden sleepers (200) are fixed by steel reaction seats (210).

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