Intelligent railway track clamping plate with stress balancing structure

Abstract

The utility model belongs to the field of railway steel rail accessories, and particularly relates to an intelligent railway track clamping plate with a stress balancing structure. The utility model provides an intelligent railway track clamping plate with a stress balancing structure. The intelligent railway track clamping plate comprises a core layer, a transition layer and an outer layer, the core layer is strip-shaped and is made of butadiene styrene rubber composite glass fibers; the transition layer is coated on the outer surface of the core layer and is made of stainless steel; and the outer layer is coated on the outer surface of the transition layer and is made of silicon nitride ceramic. According to the intelligent railway track clamping plate with the stress balancing structure, internal stress can be reduced, the service life is prolonged, the intelligent railway track clamping plate is lighter, and intelligent detection can be achieved through the built-in sensor.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of railway rail fittings, concretely relates to an intelligent railway track clamp plate with stress equalization structure. BACKGROUND

[0002] The railway track clamp plate is a key component for connecting adjacent rails, and the existing iron track clamp plate simply uses a long strip-shaped iron plate to splice two adjacent rails together, and the iron plate is fixed to the rail by bolts. This design is single, resulting in significant stress concentration at the rail joint. The iron plate is made of traditional cast iron material, which is prone to electrochemical corrosion. The existing iron plate connection relies on manual inspection, which is low in efficiency and cannot obtain real-time dynamic load data. The trend of intelligent track forces the infrastructure to be upgraded intelligently. SUMMARY

[0003] The intelligent railway track clamp plate with stress equalization structure provided by the utility model can effectively solve the problems in the background art.

[0004] The intelligent railway track clamp plate with stress equalization structure provided by the utility model comprises a core layer, a transition layer and an outer layer. The core layer is in the form of a strip, and the core layer is made of butadiene styrene rubber composite glass fiber. The transition layer is coated on the outer surface of the core layer, and the transition layer is made of stainless steel. The outer layer is coated on the outer surface of the transition layer, and the outer layer is made of silicon nitride ceramic.

[0005] As a further optimization of the utility model, the stainless steel of the transition layer is in a mesh shape.

[0006] As a further optimization of the utility model, the transition layer further comprises polyurethane, which fills the honeycomb of the mesh-shaped stainless steel and coats the outer surface of the stainless steel.

[0007] As a further optimization of the utility model, the outer layer is replaced by high-carbon steel instead of silicon nitride ceramic.

[0008] As a further optimization of the utility model, the core layer is embedded with a positioning pressure sensing chip and a piezoelectric energy harvesting unit, and the piezoelectric energy harvesting unit supplies power to the positioning pressure sensing chip.

[0009] As a further optimization of the utility model, the positioning pressure sensing chip and the piezoelectric energy harvesting unit are embedded on the surface of the core layer facing the rail.

[0010] The intelligent railway track clamp plate with stress equalization structure provided by the utility model can reduce internal stress, prolong service life, be more portable, and realize intelligent detection through the built-in sensor. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a schematic diagram of the structure of the existing iron track clamp plate;

[0012] Figure 2 is a structural schematic diagram of the embodiment;

[0013] Figure 3 is Figure 2 a structural schematic diagram of the core layer part in the embodiment;

[0014] In the embodiment, the core layer 1, the transition layer 2, the outer layer 3, the mounting hole 4, the positioning pressure sensor chip 5, and the piezoelectric energy harvesting unit 6. DETAILED DESCRIPTION

[0015] As Figure 1 shown, the existing railway joint plate simply uses two long strip-shaped iron plates to clamp the two sides of the adjacent two rails, and then is fixed by bolts to realize the splicing of the two adjacent rails.

[0016] EMBODIMENT

[0017] As Figure 2 shown, the embodiment includes a core layer 1, a transition layer 2, and an outer layer 3.

[0018] The core layer 1 is in a strip shape, and the core layer 1 is made of butadiene styrene rubber composite glass fiber material. The advantage of using this material is that the chip or circuit board can be embedded under the premise of ensuring the strength.

[0019] As Figure 3 shown, the positioning pressure sensor chip 5 and the piezoelectric energy harvesting unit 6 are embedded in the core layer 1, and the piezoelectric energy harvesting unit 6 supplies power to the positioning pressure sensor chip 5. In order to improve the sensing effect of the positioning pressure sensor chip 5 and the power generation effect of the piezoelectric energy harvesting unit 6, the positioning pressure sensor chip 5 and the piezoelectric energy harvesting unit 6 are embedded on the surface of the core layer 1 facing the rail, so as to maximally sense the vibration of the rail.

[0020] The transition layer 2 of the embodiment is coated on the outer surface of the core layer 1, and the transition layer 2 is made of stainless steel, specifically 304 stainless steel. The transition layer 2 in the embodiment weaves the stainless steel into a mesh to coat the outer surface of the core layer 1. Further, polyurethane is also provided, which fills the honeycomb of the meshed stainless steel and coats the outer surface of the stainless steel.

[0021] The outer layer 3 is coated on the outer surface of the transition layer 2, and the outer layer 3 is made of silicon nitride ceramic. In other embodiments, the outer layer 3 can replace the silicon nitride ceramic with high carbon steel.

[0022] In the embodiment, the middle part of the joint plate is provided with a mounting hole 4 with the same size as the conventional joint plate on the market, which is convenient for installation.

[0023] The comparison and analysis of the embodiment with the prior art can at least draw the following conclusions:

[0024] (1) the stress distribution of the embodiment is more optimal, and LS-DYNA finite element analysis shows that, compared with the prior art, the maximum stress value is reduced from 427 MPa to 269 MPa;

[0025] (2) through the accelerated corrosion test verification, the service life of the embodiment can reach 21 years, and the service life of the prior art is 15 years;

[0026] (3) compared with the prior art, the embodiment is reduced by 30%-50%.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the scope of protection of the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the essence and scope of the technical solutions of the present application.

Claims

1. A smart railway frog plate having a stress equalization structure, characterized by, The core layer is in the shape of a strip, the core layer is made of styrene-butadiene rubber and glass fiber, the transition layer is made of stainless steel and covers the outer surface of the core layer, and the outer layer is made of silicon nitride ceramic and covers the outer surface of the transition layer.

2. The smart railway frog plate with stress equalization structure according to claim 1, characterized in that, The stainless steel of the transition layer is in a mesh shape.

3. The smart railway frog plate with stress equalization structure according to claim 2, characterized in that, The transition layer further comprises polyurethane, the polyurethane fills the honeycomb of the mesh-shaped stainless steel and covers the outer surface of the stainless steel.

4. The smart railway frog plate with stress equalization structure according to claim 1, characterized in that, The outer layer is replaced by high-carbon steel instead of silicon nitride ceramic.

5. The smart railway frog plate with stress equalization structure according to claim 1, characterized in that, The core layer is embedded with a positioning pressure sensing chip and a piezoelectric energy harvesting unit, and the piezoelectric energy harvesting unit supplies power to the positioning pressure sensing chip.

6. The smart railway frog plate with stress equalization structure according to claim 5, characterized in that, The positioning pressure sensing chip and the piezoelectric energy harvesting unit are embedded on the surface of the core layer facing the steel rail.

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