Adjustable ballastless track structure based on resistance wire hot melting

Abstract

The utility model relates to an adjustable ballastless track structure based on resistance wire hot melting. Traditional track plate adjustment needs complex mechanical operation and long-time construction windows, the process is tedious, and efficiency is low. The track comprises a track plate and a base, the track plate is arranged on the base, and an isolating layer is arranged between the track plate and the base. A plurality of limiting bosses are arranged at the bottom of the track plate, a plurality of limiting grooves are formed in the top of the base, the limiting bosses are correspondingly arranged in the limiting grooves, and gaps are formed between the side walls of the limiting bosses and the side walls of the limiting grooves; a filling material and a plurality of resistance wires are arranged in the gap, a plurality of glue injection holes are reserved in the track plate and located on the periphery of the gap, the resistance wires are connected with an external power source through the glue injection holes, the filling material is melted through heating of the resistance wires, limiting between the track plate and the base is relieved, and the geometric shape and position of the track plate are adjusted. According to the utility model, the geometric shape and position of the track can be quickly, simply and conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of track engineering, and particularly relates to an adjustable ballastless track structure based on electric resistance wire hot melting. Background Art

[0002] The ballastless track has outstanding advantages such as strong integrity, good stability, and less maintenance workload during the operation period, which can significantly reduce the operation and maintenance workload and is widely used in high-speed railway and urban rail transit lines. Under the influence of external factors, when the geometric position of the track changes, it is necessary to adjust it in a timely and rapid manner. However, the adjustment of the traditional track slab requires complex mechanical operations and a long construction window, with a cumbersome process and low efficiency.

[0003] Therefore, there is an urgent need for a new type of ballastless track structure that can quickly and simply adjust the geometric position of the track. Summary of the Invention

[0004] The purpose of the utility model is to provide an adjustable ballastless track structure based on electric resistance wire hot melting, so as to at least solve the problems of cumbersome process and low efficiency in the adjustment of the traditional track slab.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] An adjustable ballastless track structure based on electric resistance wire hot melting, including a track slab and a base, the track slab is arranged on the base, and an isolation layer is arranged between the track slab and the base;

[0007] A plurality of limiting bosses are arranged at the bottom of the track slab, a plurality of limiting grooves are arranged at the top of the base, the limiting bosses are correspondingly arranged in the limiting grooves, and a gap is formed between the side walls of the limiting bosses and the side walls of the limiting grooves;

[0008] Filling materials and a plurality of electric resistance wires are arranged in the gap, a plurality of glue injection holes are reserved around the gap on the track slab, the electric resistance wires are connected to an external power supply through the glue injection holes, and the filling materials are melted by the heat generated by the electric resistance wires to release the limit between the track slab and the base, and the geometric position of the track slab is adjusted.

[0009] Further, both the limiting boss and the limiting groove are cuboids, the heights of the limiting boss and the limiting groove are the same, and the length and width of the limiting boss are smaller than the length and width of the limiting groove.

[0010] Further, the limiting groove and the limiting boss interact with each other to realize the limit between the track slab and the base.

[0011] Further, the track slab adopts a cast-in-situ or precast structure.

[0012] Furthermore, the glue injection hole passes through the track plate from top to bottom and is connected to the gap between the limiting boss and the limiting groove.

[0013] Furthermore, the glue injection holes are symmetrically arranged along the longitudinal center line of the gap.

[0014] Furthermore, the isolation layer is made of a material with a low friction coefficient and capable of preventing cast-in-place concrete from penetrating.

[0015] Furthermore, the filling material is a meltable material.

[0016] Furthermore, power supply interfaces are respectively provided at both ends of the resistance wire.

[0017] Furthermore, a power connector is pre-buried at the upper edge of the glue injection hole.

[0018] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0019] The utility model realizes the limitation between the track plate and the base through the interaction between the limiting groove of the bottom plate and the limiting boss of the track plate, and arranges a resistance wire and a fusible filling material in the gap formed by the limiting groove and the limiting boss. The limitation between the track plate and the base can be quickly released by heating the resistance wire to melt the filling material, thereby realizing rapid geometric adjustment of the track plate or removing the plate to re-lay the track plate. After the geometric adjustment of the track plate is completed, the quick-setting liquid filling material can be re-injected through the glue injection holes reserved around the gap to quickly restore the limitation between the track plate and the base, thereby avoiding the complex mechanical operation and long construction window required for the traditional track plate adjustment, greatly improving the efficiency of the maintenance and repair of the ballastless track, reducing the project investment, and reducing the interference of the roadbed adjustment on the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings of other embodiments can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a plan cross-sectional view of the utility model;

[0022] Figure 2 It is a longitudinal section view of the unmelted filling material of the utility model;

[0023] Figure 3It is the longitudinal sectional view after the filling material of the present utility model melts;

[0024] Figure 4 is Figure 2 the cross-sectional view A-A in

[0025] Figure 5 It is the sectional view at the limiting boss and limiting groove of the present utility model;

[0026] The markings in the figure are:

[0027] 1 - Track slab, 11 - Limiting boss, 12 - Filling material, 13 - Glue injection hole, 2 - Isolation layer, 3 - Resistance wire, 4 - Base, 41 - Limiting groove, 42 - Power supply connector, 5 - External power supply, 51 - Safety resistor. Specific implementation mode

[0028] For the convenience of understanding the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present utility model understood more thoroughly and comprehensively.

[0029] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 should not be construed as a limitation of the present utility model.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. 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 circumstances.

[0031] Embodiment 1:

[0032] Such as Figure 2 and Figure 3As shown in the figure, this embodiment provides an adjustable ballastless track structure based on the hot melting of resistance wires, which includes a track slab 1 and a base 4. The track slab 1 is laid on the base 4, and an isolation layer 2 is provided between the track slab 1 and the base 4. The isolation layer 2 plays a role of isolation and protection. The isolation layer 2 is made of a material with a low friction coefficient and can prevent the penetration of cast-in-place concrete. In this embodiment, the track slab 1 is of a cast-in-place structure, and the isolation layer 2 is made of a high-density polyethylene film to ensure that after the limit is released, the track slab 1 and the base 4 can be smoothly separated and adjusted.

[0033] Among them, as Figure 5 shown, a plurality of limit bosses 11 are provided at the bottom of the track slab 1, and a plurality of limit grooves 41 are provided at the top of the base 4. The limit bosses 11 are correspondingly arranged in the limit grooves 41, and a gap is formed between the side walls of the limit bosses 11 and the side walls of the limit grooves 41. The limit grooves 41 and the limit bosses 11 interact with each other to realize the limit between the track slab 1 and the base 4.

[0034] Both the limit bosses 11 and the limit grooves 41 are rectangular parallelepipeds, the heights of the limit bosses 11 and the limit grooves 41 are the same, and the length and width of the limit bosses 11 are smaller than the length and width of the limit grooves 41.

[0035] Furthermore, as Figure 1 shown, a filling material 12 and a plurality of resistance wires 3 are provided in the gap between the limit groove 41 and the limit boss 11. The filling material 12 fills the entire gap, and the plurality of resistance wires 3 are buried in the filling material 12 at intervals.

[0036] In this embodiment, the filling material 12 is a solid fusible material, such as a foam board. The foam board can melt quickly after heating and is easy to recycle after melting, meeting the environmental protection requirements.

[0037] Power supply interfaces are respectively provided at both ends of the resistance wire 3 for easy connection to an external power supply 5. Due to its high electrical conductivity and high temperature resistance, the resistance wire 3 can quickly heat up after being energized, thereby melting the filling material 12 and releasing the limit between the track slab 1 and the base 4.

[0038] Furthermore, as Figure 1 shown, six glue injection holes 13 are reserved around the gap on the track slab 1 for facilitating the injection of the filling material 12 and the connection of the resistance wires 3 in the later stage. The resistance wires 3 are connected to the external power supply 5 through the glue injection holes 13.

[0039] The glue injection holes 13 penetrate through the track slab 1 from top to bottom and are communicated with the gap between the limit bosses 11 and the limit grooves 41. The glue injection holes 13 are symmetrically distributed along the longitudinal center line of the gap.

[0040] As Figure 4As shown, a power connector 42 is embedded at the upper edge of the upper end of the glue injection hole 13. The power interface of the heating wire 3 is connected to a wire. The wire is connected to the power connector 42 through the glue injection hole 13. The external power supply 5 and the safety resistor 51 are connected in series through a wire, and the wire is connected to the power connector 42, so that the heating wire 3 is connected to the external power supply 5.

[0041] The heating wire 3 is energized by the external power supply 5 to heat and melt the filling material 12, thereby releasing the limit between the track slab 1 and the base 4, facilitating the subsequent geometric position adjustment of the track slab 1 or uncovering the slab to re-lay the track slab 1.

[0042] After the geometric position of the track slab 1 is adjusted, through the glue injection holes 13 reserved around the gap, the quick-setting liquid filling material 12 is re-injected. In this embodiment, the quick-setting liquid filling material 12 is foaming glue. After the foaming glue solidifies, the limit between the track slab 1 and the base 4 can be restored.

[0043] The construction process of this embodiment is as follows:

[0044] 1. Pour the base 4

[0045] According to the design requirements, pour the track base 4 at the predetermined position to ensure the flatness and strength of the base 4.

[0046] 2. Install the isolation layer 2

[0047] After the concrete of the base 4 solidifies and reaches the design strength, lay the isolation layer 2.

[0048] 3. Install the filling material 12 and the heating wire 3

[0049] Install foam boards at the four side walls close to the limiting grooves 41 of the base 4 respectively. According to the structural characteristics of the track slab 1 and the base 4, design the laying path and density of the heating wire 3, and bury the heating wire 3 in the foam board at intervals to ensure that the heating wire 3 can be evenly distributed in the area to be adjusted, and consider the conditions for the heating wire 3 to connect to the external power supply 5.

[0050] 4. Pour the track slab 1

[0051] Pour the track slab 1 concrete above the isolation layer 2 to complete the track structure laying.

[0052] The process of geometric position adjustment in this embodiment is as follows:

[0053] 1. Release the limit and adjust the geometric position of the track structure

[0054] The heating wire 3 is heated and energized by the external power supply 5. After the heating wire 3 melts the foam board, the limit is released and the geometric position of the track is adjusted.

[0055] Use high-precision measuring equipment to measure the geometric shape of the track structure. According to the measurement results and combined with the design requirements, use jacks, slide rails, and guiding devices to adjust the geometric shape of the track slab 1. If the track slab 1 needs to be replaced, after releasing the limit, remove the slab and re-lay the track slab 1.

[0056] 2. Re-inject the filling material 12

[0057] After the adjustment is completed, inject foaming glue into the gap through the glue injection hole 13. When injecting, the glue injection pressure should meet the design requirements to avoid damaging the geometric shape of the track slab 1. After the foaming glue solidifies, the limit between the base 4 and the track slab 1 can be restored.

[0058] 3. If further adjustment is required later, the above two steps can be repeated.

[0059] Embodiment 2:

[0060] In this embodiment, the track slab 1 adopts a precast structure, and the first injected filling material 12 is a quick-setting liquid fusible material, such as foaming glue.

[0061] The construction process of this embodiment is as follows:

[0062] 1. Pour the base 4

[0063] Pour the track base 4 at the predetermined position according to the design requirements to ensure the flatness and strength of the base 4.

[0064] 2. Install the isolation layer 2 and the heating wire 3

[0065] Lay the isolation layer 2 on the base 4. According to the structural characteristics of the track slab 1 and the base 4, design the laying path and density of the heating wire 3, and fix the heating wire 3 at intervals through insulating buckles on the four side walls close to the limit groove 41 of the base 4 to ensure that the heating wire 3 can be evenly distributed in the area to be adjusted.

[0066] 3. Install the track slab 1

[0067] Place the precast track slab 1 on the base 4. After the accuracy meets the design requirements, grout between the track slab 1 and the base 4 through the grouting hole to form an adjustment layer and complete the installation of the track slab 1.

[0068] 4. Inject the filling material 12

[0069] Inject foaming glue into the gap through the glue injection hole 13. After the foaming glue solidifies, the limit between the base 4 and the track slab 1 can be achieved.

[0070] The process of geometric shape adjustment in this embodiment is as follows:

[0071] 1. Release the limit and adjust the geometric shape of the track structure

[0072] The heating wire 3 is energized and heated by an external power supply 5. After the heating wire 3 melts the foaming adhesive, the limit is released, and the geometric position of the track is adjusted.

[0073] The geometric position of the track structure is measured by using high-precision measuring equipment. According to the measurement results and combined with the design requirements, jacks, slide rails and guiding devices are used to adjust the geometric position of the track slab 1. If the track slab 1 needs to be replaced, after the limit is released, the slab can be removed and the track slab 1 can be re-laid.

[0074] 2. Re-inject the filling material 12

[0075] After the adjustment is completed, the foaming adhesive is injected into the gap through the glue injection hole 13. During the injection, the glue injection pressure should meet the design requirements to avoid damaging the geometric position of the track slab 1. After the foaming adhesive solidifies, the limit between the base 4 and the track slab 1 can be restored.

[0076] 3. If further adjustment is required in the future, the above two steps can be repeated.

[0077] The remaining working principles and processes are the same as those in Embodiment 1.

[0078] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention belongs, based on the idea of the present invention, several simple deductions, deformations or substitutions can be made.

Claims

1. An adjustable ballastless track structure based on resistance wire hot melting, comprising a track plate (1) and a base (4), wherein the track plate (1) is arranged on the base (4), and is characterized in that: An isolation layer (2) is provided between the track plate (1) and the base (4); The track plate (1) is provided with a plurality of limiting bosses (11) at the bottom, the base (4) is provided with a plurality of limiting grooves (41) at the top, the limiting bosses (11) are correspondingly arranged in the limiting grooves (41), and a gap is formed between the side walls of the limiting bosses (11) and the side walls of the limiting grooves (41); A filling material (12) and a plurality of resistance wires (3) are arranged in the gap, a plurality of glue injection holes (13) are reserved on the track plate (1) around the gap, the resistance wires (3) are connected to an external power source (5) through the glue injection holes (13), the filling material (12) is melted by heat generated by the resistance wires (3), the limit between the track plate (1) and the base (4) is released, and the geometric shape of the track plate (1) is adjusted.

2. The adjustable ballastless track structure based on resistance wire hot melting according to claim 1 is characterized in that: The limiting boss (11) and the limiting groove (41) are both rectangular parallelepipeds, the limiting boss (11) and the limiting groove (41) have the same height, and the length and width of the limiting boss (11) are smaller than the length and width of the limiting groove (41).

3. The adjustable ballastless track structure based on resistance wire hot melting according to claim 1 is characterized in that: The limiting groove (41) interacts with the limiting boss (11) to achieve limiting between the track plate (1) and the base (4).

4. The adjustable ballastless track structure based on resistance wire hot melting according to claim 1 is characterized in that: The track plate (1) adopts a cast-in-place or prefabricated structure.

5. The adjustable ballastless track structure based on resistance wire hot melting according to claim 1 is characterized in that: The glue injection hole (13) passes through the track plate (1) from top to bottom, and is connected to the gap between the limiting boss (11) and the limiting groove (41).

6. The adjustable ballastless track structure based on resistance wire hot melting according to claim 1 is characterized in that: The glue injection holes (13) are symmetrically arranged along the longitudinal center line of the gap.

7. The adjustable ballastless track structure based on resistance wire hot melting according to claim 1 is characterized in that: The isolation layer (2) is made of a material with a low friction coefficient and capable of preventing cast-in-place concrete from penetrating.

8. The adjustable ballastless track structure based on resistance wire hot melting according to claim 1 is characterized by: The filling material (12) is a meltable material.

9. The adjustable ballastless track structure based on resistance wire hot melting according to claim 1 is characterized by: Both ends of the resistance wire (3) are respectively provided with power supply interfaces.

10. The adjustable ballastless track structure based on resistance wire hot melting according to claim 1 is characterized in that: A power connector (42) is pre-buried at the upper edge of the glue injection hole (13).

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