Insulating spacer between anti-slip D-shaped auxiliary beam and steel rail

Abstract

The invention discloses an insulation spacer between an anti-slip D-shaped auxiliary beam and a steel rail, and relates to the technical field of railway tracks, the insulation spacer comprises a bottom layer plate, a surface layer plate mounted at the top of the bottom layer plate, and a convex layer plate mounted at the top of the bottom layer plate and located outside the surface layer plate; the bottom layer plate comprises a middle layer, a first outer layer installed at the top of the middle layer, a second outer layer installed at the bottom of the middle layer and an outer film layer wrapping the surfaces of the first outer layer and the second outer layer. According to the anti-sliding D-shaped insulating spacer between the auxiliary beam and the steel rail, the top of the anti-sliding D-shaped insulating spacer between the auxiliary beam and the steel rail is provided with a grain-shaped structure, the lower surface of the anti-sliding D-shaped insulating spacer is of a groove structure, and the size stability of the spacer is guaranteed; through the arrangement of the bottom layer plate, conduction of current between the D-shaped auxiliary beam and the steel rail is avoided, interference of electric appliances is prevented, and normal operation of a railway signal system is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of railway tracks, in particular to an insulating gasket between an anti-slip D-shaped temporary beam and a rail. Background Art

[0002] The D-type construction temporary beam is a load-bearing component used to erect rails in special areas to facilitate railway construction. In the prior art, there is a modified railway D-type construction temporary beam, which is characterized by a longitudinal beam fixed at both ends of the crossbeam, and the longitudinal beam is fixed to the two ends of the crossbeam as a whole through a corbel and a rib plate. There are rails on the crossbeam, and the rail insulating elastic gasket is located between the rails and the sleepers, which plays the role of buffering the pressure of the rails on the sleepers and insulating the sleepers. It is a major component of the track circuit.

[0003] The patent application of Jianjingsuo is CN105907032B, which discloses a high-speed rail insulating elastic sheet, belonging to the field of railway track circuit technology, and aims to solve the problems of insufficient toughness and short service life of insulating elastic gaskets in the prior art. The sheet comprises a bottom layer and a surface layer, wherein the surface layer is an arc-shaped structure with a thick middle and thin sides, and the middle thickness of the surface layer plate (2) is 10mm-15mm. Both ends of the high-speed rail insulating elastic sheet are provided with convex layers, and the height of the convex part is 2-5mm. The surface layer is provided with a corrugated structure, and the corrugated structure can be of any shape. The surface of the bottom layer is provided with a concave channel structure, and the depth of the corrugation is 1mm-5mm. The thickness of the bottom layer is 3mm-10mm. The high-speed rail insulating elastic sheet is made of glass fiber reinforced polyurethane material.

[0004] Although the above scheme adopts a corrugated structure on the upper surface and a concave channel structure on the lower surface, and the friction between the upper surface and the rail is large enough to avoid slipping on the rail, it is necessary to prevent the current from being conducted between the D-type temporary beam and the rail because it is used on the rail to avoid electrical interference and ensure the normal operation of the railway signal system. For this reason, we propose an anti-slip insulating gasket between the D-type temporary beam and the rail. Summary of the Invention

[0005] The main purpose of the present invention is to provide an anti-slip D-shaped temporary beam and an insulating gasket between the rails, which can effectively solve the problem of the background technology that an anti-slip D-shaped temporary beam and an insulating gasket between the rails need to prevent current from being conducted between the D-shaped temporary beam and the rails, avoid electrical interference, and ensure the normal operation of the railway signal system.

[0006] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: an insulating gasket between an anti-slip D-shaped temporary beam and a rail, comprising a bottom plate, a surface plate installed on top of the bottom plate, and a convex plate installed on top of the bottom plate and located outside the surface plate;

[0007] The bottom plate comprises a middle layer, a first outer layer installed on the top of the middle layer, a second outer layer installed on the bottom of the middle layer, and an outer film layer wrapped around the surfaces of the first outer layer and the second outer layer;

[0008] The method for preparing the insulating spacer between the anti-slip D-shaped temporary beam and the rail comprises the following steps:

[0009] 1. Preparation of silica sol: mixing a silicon source, water, an alcohol solvent, and polyimide powder to prepare silica sol, wherein the amount of the polyimide powder added is 0.5% to 5% of the mass of the silica sol, and the particle size of the polyimide powder is in the range of 600 mesh to 1200 mesh;

[0010] 2. preparing a gel: introducing a fiber preform into the silica sol of step 1) to obtain a gel;

[0011] 3. Solvent replacement: using a replacement solvent to replace the liquid in the gel to obtain an intermediate, wherein the replacement solvent is selected from methanol, ethanol or a combination thereof;

[0012] 4. Drying: Place the raw materials after step 3 into the mold and heat it up to quickly reach the high-temperature curing temperature of the thermosetting resin. After heating to the high-temperature curing temperature, pressurize it on the press table and maintain the pressure for 2 minutes, then cool it to below 60°C and demold it.

[0013] Preferably, the surface layer plate is an arc-shaped structure that is thick in the middle and thin on both sides, and the thickness of the surface layer plate in the middle is 10mm-15mm.

[0014] Preferably, a corrugated structure is provided on the top of the surface layer board, and the corrugated structure can be of any shape.

[0015] Preferably, there are two groups of the convex layer plates, and the two groups of the convex layer plates are symmetrically arranged with respect to the surface layer plates.

[0016] Preferably, a concave channel structure is provided at the bottom of the bottom plate.

[0017] Preferably, the silicon source is selected from at least one of sodium silicate, ethyl orthosilicate, methyl orthosilicate, tetrapropoxysilane, tetrabutoxysilane, dimethyldimethoxysilane or dimethyldiethoxysilane.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, a corrugated structure is provided on the top of the insulating gasket between the anti-slip D-shaped temporary beam and the rail, and a concave channel structure is adopted on the lower surface. The friction between the upper surface and the rail is large enough to avoid the occurrence of slipping with the rail. The lower surface adopts a concave channel structure. When subjected to pressure, the materials on both sides of the groove are squeezed into the concave channel, thereby ensuring the dimensional stability of the gasket.

[0020] 2. In the present invention, by setting up the bottom plate, the first outer layer is a fiber / aerogel composite layer containing basalt fiber in the base material; the second outer layer is a fiber / aerogel composite layer containing only glass fiber in the base material, which greatly improves the insulation property of the insulating gasket between the anti-slip D-shaped temporary beam and the rail, avoids the conduction of current between the D-shaped temporary beam and the rail, prevents interference from electrical appliances, and ensures the normal operation of the railway signal system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the present invention from above;

[0023] Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0024] Figure 4 It is a bottom view structural schematic diagram of the present invention.

[0025] In the picture:

[0026] 1. Bottom plate; 101. First outer layer; 102. Middle layer; 103. Second outer layer; 104. Outer membrane layer;

[0027] 2. Surface board;

[0028] 3. Convex layer board.

[0029] Example 1

[0030] like Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4 As shown, the present invention is an insulating gasket between an anti-slip D-shaped temporary beam and a rail, comprising a bottom plate 1, a surface plate 2 mounted on top of the bottom plate 1, and a convex plate 3 mounted on top of the bottom plate 1 and located outside the surface plate 2;

[0031] like Figure 3 As shown, the bottom plate 1 includes an intermediate layer 102, a first outer layer 101 installed on the top of the intermediate layer 102, a second outer layer 103 installed on the bottom of the intermediate layer 102, and an outer film layer 104 wrapped around the surfaces of the first outer layer 101 and the second outer layer 103. The same or different fiber / aerogel composite layers are bonded to both sides of the outer film layer 104.

[0032] The method for preparing the insulating spacer between the anti-slip D-shaped temporary beam and the rail comprises the following steps:

[0033] 1. Preparation of silica sol: Mix silicon source, water, alcohol solvent and polyimide powder to prepare silica sol. The amount of polyimide powder added is 0.5% to 5% of the mass of silica sol. The particle size range of polyimide powder is 600 mesh to 1200 mesh.

[0034] 2. Preparation of gel: introducing the fiber preform into the silica sol in step 1 to obtain a gel;

[0035] 3. Solvent replacement: using a replacement solvent to replace the liquid in the gel to obtain an intermediate, wherein the replacement solvent is selected from methanol, ethanol or a combination thereof;

[0036] 4. Drying: Place the raw materials after step 3 into the mold and heat it up to quickly reach the high-temperature curing temperature of the thermosetting resin. After heating to the high-temperature curing temperature, pressurize it on the press table and maintain the pressure for 2 minutes, then cool it to below 60°C and demold it.

[0037] like Figure 2 and Figure 3 The surface layer plate 2 shown is an arc-shaped structure that is thick in the middle and thin on both sides. The middle thickness of the surface layer plate 2 is 10mm-15mm. The top of the surface layer plate 2 is provided with a corrugated structure. The corrugated structure can be of any shape and can increase the friction between the upper surface of the insulating gasket and the rail.

[0038] like Figure 1 and Figure 3 As shown, there are two groups of raised layer plates 3, and the two groups of raised layer plates 3 are symmetrically arranged with respect to the surface layer plate 2, so as to achieve a stable connection with the rails.

[0039] like Figure 4 As shown, a concave channel structure is provided at the bottom of the bottom plate 1. When subjected to pressure, the materials on both sides of the groove are squeezed into the concave channel, thereby ensuring the dimensional stability of the gasket.

[0040] like Figure 1 As shown, the silicon source is selected from at least one of sodium silicate, ethyl orthosilicate, methyl orthosilicate, tetrapropoxysilane, tetrabutoxysilane, dimethyldimethoxysilane or dimethyldiethoxysilane, thereby enhancing the insulation property of the insulating spacer.

[0041] The top of the insulating gasket between the anti-slip D-shaped temporary beam and the rail is provided with a corrugated structure, and the lower surface adopts a concave channel structure. The friction between the upper surface and the rail is large enough to avoid slipping with the rail. The lower surface adopts a concave channel structure. When subjected to pressure, the material on both sides of the groove is squeezed into the concave channel, ensuring the dimensional stability of the gasket.

[0042] Example 2

[0043] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the present invention is an insulating gasket between an anti-slip D-shaped temporary beam and a rail, comprising a bottom plate 1, a surface plate 2 mounted on top of the bottom plate 1, and a convex plate 3 mounted on top of the bottom plate 1 and located outside the surface plate 2;

[0044] like Figure 3 As shown, the bottom plate 1 includes an intermediate layer 102, a first outer layer 101 installed on the top of the intermediate layer 102, a second outer layer 103 installed on the bottom of the intermediate layer 102, and an outer film layer 104 wrapped around the surfaces of the first outer layer 101 and the second outer layer 103. The same or different fiber / aerogel composite layers are bonded to both sides of the outer film layer 104.

[0045] The method for preparing the insulating spacer between the anti-slip D-shaped temporary beam and the rail comprises the following steps:

[0046] 1. Preparation of silica sol: Mix silicon source, water, alcohol solvent and polyimide powder to prepare silica sol. The amount of polyimide powder added is 0.5% to 5% of the mass of silica sol. The particle size range of polyimide powder is 600 mesh to 1200 mesh.

[0047] 2. Preparation of gel: introducing the fiber preform into the silica sol in step 1 to obtain a gel;

[0048] 3. Solvent replacement: using a replacement solvent to replace the liquid in the gel to obtain an intermediate, wherein the replacement solvent is selected from methanol, ethanol or a combination thereof;

[0049] 4. Drying: Place the raw materials after step 3 into the mold and heat it up to quickly reach the high-temperature curing temperature of the thermosetting resin. After heating to the high-temperature curing temperature, pressurize it on the press table and maintain the pressure for 2 minutes, then cool it to below 60°C and demold it.

[0050] like Figure 2 and Figure 3 The surface layer plate 2 shown is an arc-shaped structure that is thick in the middle and thin on both sides. The middle thickness of the surface layer plate 2 is 10mm-15mm. The top of the surface layer plate 2 is provided with a corrugated structure. The corrugated structure can be of any shape and can increase the friction between the upper surface of the insulating gasket and the rail.

[0051] like Figure 1 and Figure 3 As shown, there are two groups of raised layer plates 3, and the two groups of raised layer plates 3 are symmetrically arranged with respect to the surface layer plate 2, so as to achieve a stable connection with the rails.

[0052] like Figure 4 As shown, a concave channel structure is provided at the bottom of the bottom plate 1. When subjected to pressure, the materials on both sides of the groove are squeezed into the concave channel, thereby ensuring the dimensional stability of the gasket.

[0053] like Figure 1 As shown, the silicon source is selected from at least one of sodium silicate, ethyl orthosilicate, methyl orthosilicate, tetrapropoxysilane, tetrabutoxysilane, dimethyldimethoxysilane or dimethyldiethoxysilane, thereby enhancing the insulation property of the insulating spacer.

[0054] By setting up the bottom plate 1, the first outer layer is a fiber / aerogel composite layer whose base material contains basalt fiber; the second outer layer is a fiber / aerogel composite layer whose base material contains only glass fiber, which greatly improves the insulation performance of the insulating gasket between the anti-slip D-shaped temporary beam and the rail, avoids the conduction of current between the D-shaped temporary beam and the rail, prevents interference from electrical appliances, and ensures the normal operation of the railway signal system.

[0055] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An insulating spacer between an anti-slip D-shaped temporary beam and a rail, comprising a bottom plate (1), characterized in that: It also includes a surface layer board (2) installed on the top of the bottom layer board (1), and a convex layer board (3) installed on the top of the bottom layer board (1) and located outside the surface layer board (2); The bottom plate (1) comprises an intermediate layer (102), a first outer layer (101) installed on the top of the intermediate layer (102), a second outer layer (103) installed on the bottom of the intermediate layer (102), and an outer film layer (104) wrapped around the surfaces of the first outer layer (101) and the second outer layer (103); The method for preparing the insulating spacer between the anti-slip D-shaped temporary beam and the rail comprises the following steps:

1. Preparation of silica sol: mixing a silicon source, water, an alcohol solvent, and polyimide powder to prepare silica sol, wherein the amount of the polyimide powder added is 0.5% to 5% of the mass of the silica sol, and the particle size of the polyimide powder is in the range of 600 mesh to 1200 mesh; 2. preparing a gel: introducing a fiber preform into the silica sol of step 1) to obtain a gel; 3. Solvent replacement: using a replacement solvent to replace the liquid in the gel to obtain an intermediate, wherein the replacement solvent is selected from methanol, ethanol or a combination thereof; 4. Drying: Place the raw materials after step 3 into the mold and heat it up to quickly reach the high-temperature curing temperature of the thermosetting resin. After heating to the high-temperature curing temperature, pressurize it on the press table and maintain the pressure for 2 minutes, then cool it to below 60°C and demold it.

2. The insulating spacer between the anti-slip D-shaped temporary beam and the rail according to claim 1, characterized in that: The surface layer plate (2) is an arc-shaped structure with a thick middle portion and thin sides. The thickness of the surface layer plate (2) in the middle portion is 10 mm to 15 mm.

3. The insulating spacer between the anti-slip D-shaped temporary beam and the rail according to claim 1, characterized in that: A ribbed structure is provided on the top of the surface plate (2), and the ribbed structure can be of any shape.

4. The insulating spacer between the anti-slip D-shaped temporary beam and the rail according to claim 1, characterized in that: There are two groups of the convex layer plates (3), and the two groups of the convex layer plates (3) are symmetrically arranged with respect to the surface layer plates (2).

5. The insulating spacer between the anti-slip D-shaped temporary beam and the rail according to claim 1, characterized in that: A concave channel structure is provided at the bottom of the bottom plate (1).

6. The insulating spacer between the anti-slip D-shaped temporary beam and the rail according to claim 1, characterized in that: The silicon source is selected from at least one of sodium silicate, ethyl orthosilicate, methyl orthosilicate, tetrapropoxysilane, tetrabutoxysilane, dimethyldimethoxysilane or dimethyldiethoxysilane.

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