Novel ceramic insulated steel rail with columnar stress points

Abstract

The utility model relates to the technical field of novel ceramic insulated steel rails with columnar stress points, and discloses a novel ceramic insulated steel rail with columnar stress points, which is characterized in that the stress points of a first ceramic column and a second ceramic column in the prior art are changed, and an original ball-shaped limiting hole is changed into a ball plane type, so that the connected steel rail can be prevented from being damaged; an adhesion layer and an insulating layer are arranged on the outer wall of a first ceramic column and the outer wall of a second ceramic column, the adhesion layer is coated on the surface of a steel rail, and at least one insulating layer is coated on the surface of the adhesion layer; the thickness of the adhesion layer is not more than 200 microns, the thickness of each insulating layer is not more than 200 microns, the high-temperature-resistant and wear-resistant ceramic insulating paint can form a ceramic coating which has higher volume resistivity, can bear a stronger electric field and is not broken down on the surface of a coated object, and the coating has higher mechanical strength and good chemical stability, can resist aging, and can be applied to the surface of an object to be coated with the high-temperature-resistant and wear-resistant ceramic insulating paint. And water resistance and chemical corrosion resistance are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of novel ceramic insulated steel rails with columnar stress points, in particular to a novel ceramic insulated steel rail with columnar stress points. Background Art

[0002] Rail transit, such as subways, light rails, trams, and new rail transit systems, mostly use DC electric traction systems and use the running rails as return lines. Most of this current can flow back to the negative pole of the power supply through the running rails, but a small part leaks from the location where the insulation between the track and the ground is poor to the roadbed and the surrounding soil, forming stray current. The presence of stray current will cause electrochemical corrosion to the rails themselves and the public facilities, pipelines, and buildings around the rails, reducing the service life of the rails, buried pipelines, and buildings. Especially for tram tracks, compared with subways and light rails, the tracks are completely buried underground, and the harm of their stray currents is more serious. The fastener system of fixed rails usually adopts insulation design and sets insulating blocks and sheaths on the outer side of the rails of buried rails to increase the insulation resistance between the rails and surrounding structures; although this method can effectively increase the insulation resistance of the rails, gaps will be formed between the insulating blocks and sheaths and the fasteners, and between the insulating blocks and sheaths during installation and use. This gap is not only caused by the complex working conditions caused by the discontinuous structure of the insulating parts joints and fasteners along the driving direction of the rails, but also on the rail cross section, due to the deformation of the rails under the action of vehicle loads, dynamic gaps will be generated between the insulating blocks and sheaths in the vertical direction, horizontal direction and the torsional deformation of the rails, etc., and the insulation performance of the rail system cannot be maintained under actual operating conditions and humid environments, and the stray current problem of the rail system cannot be fundamentally solved. After humans used electricity, insulating materials became a research topic.

[0003] The existing Chinese patent website has published a nano-ceramic coating insulated steel rail, and the authorized public number is CN207091838U. Compared with the prior art, the utility model provides a nano-ceramic coating insulated steel rail, which has the following beneficial effects:

[0004] Compared with the prior art, the utility model proposes a nano-ceramic coated insulated rail, in which a high resistivity material with a resistivity of not less than 10 megohms is coated on the surface of the rail as an insulating coating. In addition to having high insulation resistance, the nano-ceramic coated insulated rail also has the functions of corrosion resistance, water resistance, aging resistance, friction resistance, moisture and heat resistance, atmospheric aging resistance and strong adhesion. It fundamentally eliminates the generation of stray current in the rail system, avoids the harm caused by adverse factors such as electrochemical corrosion to the rail and public facilities, pipelines and buildings around the rail, and the application of the nano-ceramic coated insulated rail no longer requires the use of equipment such as rail insulation blocks and sheaths or no longer requires high insulation performance. The rail insulation resistance of the nano-ceramic coated insulated rail of the utility model is more than 5 times higher than that of the traditional rail insulation blocks and sheath solutions under actual application environment conditions. The use of the nano-ceramic coated insulated rail can greatly simplify the track laying process and reduce the track insulation cost, improve the track laying efficiency, and also simplify and reduce the operation and maintenance workload, etc., to ensure the track insulation performance and operation efficiency and safety.

[0005] The existing ceramic columns are ball-shaped and are set at positions where the rails are connected, which can easily damage the rails. Based on this, a new type of ceramic insulated rail with a columnar stress point is proposed. Utility Model Content

[0006] The utility model aims to provide a novel ceramic insulated steel rail with a columnar stress point, which solves the problems described in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of ceramic insulated rail with a columnar stress point, comprising a first ceramic column, a limiting hole is arranged in the middle section of the first ceramic column, a limiting groove is arranged on the left inner wall of the first ceramic column, a latch block is fixedly connected to the right inner wall of the first ceramic column, a second ceramic column is arranged on the first ceramic column in contact with a threaded bolt through a nut, an inner pad is arranged at the inner connection of the first ceramic column and the second ceramic column, an outer pad is arranged at the outer connection of the first ceramic column and the second ceramic column, and a gasket is arranged at the connection between the outer pad and the threaded bolt.

[0008] Preferably, the outer walls of the first ceramic column and the second ceramic column are provided with a wear-resistant layer, and the upper surface and the lower surface are respectively embedded in the sleeper and the rail spring bar, and are composed of two blocks, and the two blocks adopt a magnetic structure.

[0009] Preferably, the outer pad and the inner pad are arranged at the connection between the first ceramic column and the second ceramic column, and threaded holes are opened, and the threaded bolts are threadedly connected to the threaded holes.

[0010] Preferably, the latch block is slidably connected to the limiting groove, and the threaded bolt is threadedly connected to a threaded hole opened at the connection between the latch block and the limiting groove through a threaded nut.

[0011] Preferably, the limiting holes of the first ceramic column and the second ceramic column are round bead plane type.

[0012] Preferably, the outer layers of the first ceramic column and the second ceramic column consist of an adhesion layer and an insulating layer; the adhesion layer is coated on the surface of the rail, and the insulating layer is provided with at least one layer coated on the surface of the adhesion layer; the thickness of the adhesion layer is not greater than 200 μm, and the thickness of each insulating layer is not greater than 200 μm.

[0013] The utility model provides a new type of ceramic insulated steel rail with a columnar stress point. The new type of ceramic insulated steel rail with a columnar stress point has the following beneficial effects:

[0014] 1. The novel ceramic insulated rail with columnar stress points changes the stress points of the original first ceramic column and the second ceramic column, and replaces the original round ball-shaped limiting holes with round ball plane-shaped ones, thus avoiding damage to the connected rails.

[0015] 2. The new type of ceramic insulated rail with columnar stress points is connected at the connection between the first ceramic column and the second ceramic column through an inner pad and an outer pad, a threaded bolt and a nut, and a gasket sleeved on the outer wall of the threaded bolt. A limiting groove is provided on the left inner wall of the first ceramic column and the second ceramic column, and a sliding connection is made through the pin block on the right side, and then the connection is completed through a threaded bolt and a nut.

[0016] 3. The new ceramic insulated rail with columnar stress points is provided with an adhesion layer and an insulating layer on the outer walls of the first ceramic column and the second ceramic column. The adhesion layer is coated on the surface of the rail, and the insulating layer is provided with at least one layer, which is coated on the surface of the adhesion layer; the thickness of the adhesion layer is not more than 200μm, and the thickness of each insulating layer is not more than 200μm. The high-temperature and wear-resistant ceramic insulating coating can form a ceramic coating with high volume resistivity on the surface of the coated object. The coating can withstand a strong electric field without being punctured. The coating has high mechanical strength and good chemical stability, and is resistant to aging, water, and chemical corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 It is a top view schematic diagram of the structure of the utility model;

[0020] Figure 4 It is a horizontal schematic diagram of the structure of the utility model.

[0021] In the figure: 1. first ceramic column 2. second ceramic column 3. limiting hole 4. inner pad 5. threaded bolt 6. nut 7. limiting groove 8. latch block 9. outer pad 10. gasket. DETAILED DESCRIPTION

[0022] like Figure 1-4 As shown, the utility model provides a technical solution: a new type of ceramic insulated rail with a columnar stress point, comprising a first ceramic column 1, a limiting hole 3 is arranged in the middle section of the first ceramic column 1, the limiting holes 3 of the first ceramic column 1 and the second ceramic column 2 are round bead plane types, a limiting groove 7 is arranged on the left inner wall of the first ceramic column 1, a latch block 8 is fixedly connected to the right inner wall of the first ceramic column 1, the latch block 8 is slidably connected to the limiting groove 7, a threaded bolt 5 is threadedly connected to a threaded hole arranged at the connection between the latch block 8 and the limiting groove 7 through a threaded nut 6, the first ceramic column 1 is contacted with the threaded bolt 5 through the nut 6, an inner pad 4 is arranged at the inner connection between the first ceramic column 1 and the second ceramic column 2, and the first ceramic column 1 and the second ceramic column 2 are connected. An outer pad 9 is provided at the outer connection of the ceramic column 2, and a gasket 10 is provided at the connection between the outer pad 9 and the threaded bolt 5. The outer walls of the first ceramic column 1 and the second ceramic column 2 are provided with a wear-resistant layer, and the upper surface and the lower surface are respectively embedded in the sleeper and the rail spring bar. They are composed of two blocks, and the two blocks adopt a magnetic structure. The outer pad 9 and the inner pad 4 are arranged at the connection between the first ceramic column 1 and the second ceramic column 2, and threaded holes are opened. The threaded bolt 5 is threadedly connected to the threaded hole. The outer layer of the first ceramic column 1 and the second ceramic column 2 consists of an adhesion layer and an insulating layer; the adhesion layer is coated on the surface of the rail, and the insulating layer is provided with at least one layer, which is coated on the surface of the adhesion layer; the thickness of the adhesion layer is not more than 200μm, and the thickness of each insulating layer is not more than 200μm.

[0023] The novel ceramic insulated rail with columnar stress points is constructed by changing the stress points of the original first ceramic column 1 and the second ceramic column 2, and replacing the original round ball-shaped limiting hole 3 with a round ball plane type, so as to avoid damaging the connected rails. The first ceramic column 1 and the second ceramic column 2 are connected at the connection between the first ceramic column 1 and the second ceramic column 2 through an inner pad 4 and an outer pad 9, a threaded bolt 5 and a nut 6, and a gasket 10 sleeved on the outer wall of the threaded bolt 5. A limiting groove 7 is provided on the left inner wall of the first ceramic column 1 and the second ceramic column 2, and a sliding connection is made through a latch block 8 on the right side, and then a connection is made through the threaded bolt 5 and the nut 6. The outer wall of the second ceramic column 2 is provided with an adhesion layer and an insulation layer, the adhesion layer is coated on the surface of the rail, and the insulation layer is provided with at least one layer, which is coated on the surface of the adhesion layer; the thickness of the adhesion layer is not more than 200μm, and the thickness of each insulation layer is not more than 200μm. The high-temperature and wear-resistant ceramic insulating coating can form a layer with high volume resistivity on the surface of the coated object. The coating can withstand a strong electric field without being punctured. The coating has high mechanical strength and good chemical stability, is resistant to aging, water, chemical corrosion, and long-term fire resistance. It also has mechanical shock and thermal shock resistance. The latest application of nanomaterials has greatly improved the engineering insulation performance.

Claims

1. A novel ceramic insulated rail with a columnar stress point, comprising a first ceramic column (1), characterized in that: A limiting hole (3) is provided in the middle section of the first ceramic column (1), a limiting groove (7) is provided on the left inner wall of the first ceramic column (1), a latch block (8) is fixedly connected to the right inner wall of the first ceramic column (1), the first ceramic column (1) is provided with a second ceramic column (2) in contact with a threaded bolt (5) via a nut (6), an inner pad (4) is provided at the inner connection between the first ceramic column (1) and the second ceramic column (2), an outer pad (9) is provided at the outer connection between the first ceramic column (1) and the second ceramic column (2), and a gasket (10) is provided at the connection between the outer pad (9) and the threaded bolt (5).

2. A novel ceramic insulated rail with columnar stress points according to claim 1, characterized in that: The outer walls of the first ceramic column (1) and the second ceramic column (2) are provided with a wear-resistant layer, and the upper surface and the lower surface are respectively embedded in the sleeper and the rail spring bar, and are composed of two blocks, and the two blocks adopt a magnetic structure.

3. A novel ceramic insulated rail with columnar stress points according to claim 1, characterized in that: The outer pad (9) and the inner pad (4) are arranged at the connection between the first ceramic column (1) and the second ceramic column (2), and are provided with threaded holes, and the threaded bolts (5) are threadedly connected to the threaded holes.

4. The novel ceramic insulated rail with columnar stress points according to claim 1 is characterized by: The latch block (8) is slidably connected to the limiting groove (7), and the threaded bolt (5) is threadedly connected to a threaded hole provided at the connection between the latch block (8) and the limiting groove (7) through a threaded nut (6).

5. The novel ceramic insulated rail with columnar stress points according to claim 1 is characterized by: The limiting holes (3) of the first ceramic column (1) and the second ceramic column (2) are of round bead plane type.

6. The novel ceramic insulated rail with columnar stress points according to claim 1, characterized in that: The outer layers of the first ceramic column (1) and the second ceramic column (2) are composed of an adhesive layer and an insulating layer; the adhesive layer is coated on the surface of the rail, and the insulating layer is provided with at least one layer coated on the surface of the adhesive layer; the thickness of the adhesive layer is not greater than 200 μm, and the thickness of each insulating layer is not greater than 200 μm.

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