Insulation enhanced track fastener

Abstract

The utility model relates to the technical field of rail traffic, in particular to an insulation enhanced rail fastener, which comprises a metal backing plate, an insulation rail lower backing plate and two side connecting components, and the insulation rail lower backing plate is arranged on the top surface of the metal backing plate. The two ends, opposite to the front-back direction, of the insulating rail lower base plate protrude out of the two side faces, opposite to the front-back direction, of the metal base plate correspondingly, the two side connecting assemblies are arranged on the two opposite sides, in the left-right direction, of the insulating rail lower base plate correspondingly, and each side connecting assembly comprises a fixing base, an elastic strip and an insulating part; the insulating part and the insulating rail lower base plate define a clamping groove, one end of the elastic strip is connected to the fixing base, the other end of the elastic strip is pressed on the top face of the insulating part, and the two ends, relative to the front-back direction, of the insulating part and the insulating rail lower base plate protrude out of the two side faces, relative to the front-back direction, of the metal base plate respectively. According to the utility model, the current leakage amount of the steel rail at the insulation enhanced rail fastener can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit technical field, in particular to a kind of insulation reinforced rail fastener. BACKGROUND

[0002] At present, multiple rail fasteners are generally arranged on the steel rail, which has the functions of fixing the steel rail and dispersing load, and is an important component for ensuring the stability and safety of railway line.

[0003] In order to make the rail fastener have the shock-absorbing function and reduce the influence of the creep phenomenon of the steel rail on the rail fastener, the top surface of the metal base plate of the rail fastener is provided with an insulating rail pad for supporting the steel rail, so that the current on the steel rail can be prevented from directly creeping from the bottom surface of the steel rail to the top surface of the metal base plate. However, the current on the steel rail can still creep to the rail fastener through the side surface of the steel rail. Therefore, the current leakage amount of the steel rail at the rail fastener is still large, which can easily damage the rail fastener. SUMMARY

[0004] The utility model aims to provide a kind of insulation reinforced rail fastener, to solve the technical problem that the current leakage amount of steel rail at rail fastener is large, which can easily damage the rail fastener.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an insulation reinforced rail fastener, which comprises a metal base plate, an insulating rail pad and two side connecting assemblies. The insulating rail pad is arranged on the top surface of the metal base plate. The top surface of the insulating rail pad is used for supporting the bottom surface of the steel rail. The two ends of the insulating rail pad relative to the front and back directions protrude from the two sides of the metal base plate relative to the front and back directions. The two side connecting assemblies are arranged on the two opposite sides of the insulating rail pad along the left and right directions. The side connecting assembly comprises a fixing seat, a spring strip and an insulating piece. The fixing seat is fixedly arranged on the top surface of the metal base plate. The insulating piece and the insulating rail pad form a clamping groove. One end of the spring strip is connected to the fixing seat, and the other end is pressed on the top surface of the insulating piece to reduce the height of the clamping groove in the vertical direction, so that the insulating piece and the insulating rail pad clamp the steel rail. The two ends of the insulating piece and the insulating rail pad relative to the front and back directions protrude from the two sides of the metal base plate relative to the front and back directions.

[0006] Optionally, the bottom surface of the insulating rail pad is provided with two positioning protrusions extending along the left and right directions. The two positioning protrusions are respectively located on the two sides of the metal base plate along the front and back directions.

[0007] Optionally, the insulating piece comprises insulating wings and a gauge block, the clamping groove is surrounded by the insulating wings and the insulating rail base plate, two ends of the insulating wings relative to the front-rear direction protrude from two sides of the metal base plate relative to the front-rear direction respectively, the gauge block is provided with a first accommodating groove relative to the side surface of the fixing base, the fixing base is located in the first accommodating groove, the elastic strip is pressed on the top surface of the gauge block, and the bottom surface of the gauge block is pressed on the top surface of the insulating wing.

[0008] Optionally, the insulating wing comprises a first wing plate and a second wing plate, the top end of the second wing plate is connected to the first wing plate, the clamping groove is surrounded by the bottom surface of the first wing plate, the side surface of the second wing plate and the top surface of the insulating rail base plate, and the bottom surface of the gauge block is pressed on the top surface of the first wing plate.

[0009] Optionally, the top surface of the first wing plate is provided with a wear-resistant layer, and the gauge block is pressed on the wear-resistant layer.

[0010] Optionally, two side surfaces of the insulating rail base plate relative to the left-right direction are provided with clamping grooves extending along the front-rear direction respectively, the clamping grooves correspond to the second wing plates respectively, the groove bottoms of the clamping grooves are provided with clamping holes, the insulating wing further comprises a wave wrinkle part and a clamping block, the wave wrinkle part is arranged in the clamping groove, one end of the wave wrinkle part is connected to the side surface of the second wing plate, the other end of the wave wrinkle part is connected to the clamping block, and the clamping block is clamped in the clamping hole.

[0011] Optionally, the insulating wing further comprises a water baffle, the water baffle is arranged on the top surface of the first wing plate, and the top surface of the water baffle is higher than the top surface of the gauge block.

[0012] Optionally, the water baffle is provided with a second accommodating groove in the form of an arc extending through the front-rear direction relative to the side surface of the gauge block, one end of the gauge block relative to the water baffle is located in the second accommodating groove, the height of the top surface of the water baffle gradually increases from the side far away from the gauge block to the side close to the gauge block, and the top edge and the bottom edge of the side of the water baffle far away from the gauge block are both provided with a round corner.

[0013] Optionally, the insulating wing is made of a non-metallic elastic material.

[0014] Optionally, the distances from the insulating piece and the insulating rail base plate to the metal base plate are all greater than 40 mm.

[0015] Compared with the prior art, the insulating enhanced rail fastener has the following beneficial effects:

[0016] The utility model discloses an insulation reinforced rail fastener, which comprises a metal base plate, an insulating rail lower base plate and a side connecting assembly, wherein the length of the insulating rail lower base plate is greater than that of the metal base plate, and the insulating rail lower base plate protrudes from the two sides of the metal base plate; the length of the side connecting assembly is greater than that of the metal base plate, and the side connecting assembly protrudes from the two sides of the metal base plate; the insulating rail lower base plate is arranged on the top surface of the metal base plate and supports the bottom surface of the steel rail, so that the current on the steel rail cannot climb to the metal base plate through the bottom surface of the steel rail; the side connecting assembly is arranged on the two opposite sides of the insulating rail lower base plate in the left-right direction, and the side connecting assembly is connected to the steel rail in the left-right direction; the insulating piece of the side connecting assembly and the insulating rail lower base plate enclose a clamping groove, the fixed seat of the side connecting assembly and the elastic strip are pressed on the top surface of the insulating piece, the height of the clamping groove in the vertical direction is reduced, and the insulating piece and the insulating rail lower base plate clamp the steel rail, thereby achieving the effect of connecting the steel rail; the side surface and part of the top surface of the rail bottom are shielded by the insulating piece, the bottom surface of the steel rail is shielded by the insulating rail lower base plate, and the lengths of the insulating piece and the insulating rail lower base plate are greater than that of the metal base plate, and the insulating piece and the insulating rail lower base plate protrude from the two sides of the metal base plate, so that the current on the steel rail cannot climb to the metal base plate through the side surface of the rail bottom; in summary, the insulation reinforced rail fastener greatly increases the creepage distance of the steel rail and the metal base plate, effectively reduces the current leakage of the steel rail at the insulation reinforced rail fastener, and makes the insulation reinforced rail fastener less likely to be damaged due to current leakage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the insulation reinforced rail fastener of the utility model.

[0018] Figure 2 It is a structural schematic view of the insulation reinforced rail fastener of the utility model.

[0019] Figure 3 It is Figure 2 It is a partial enlarged view of the middle B part.

[0020] Figure 4 It is a structural schematic view of the insulation reinforced rail fastener of the utility model from another perspective.

[0021] Figure 5 It is a plan view of the insulation reinforced rail fastener of the utility model.

[0022] Figure 6 It is Figure 5 It is a sectional view of the middle A-A.

[0023] Reference numerals: 1, metal base plate; 2, insulating rail underlay; 21, first groove; 22, second groove; 23, positioning protrusion; 3, side connecting assembly; 31, fixing seat; 311, mounting hole; 32, elastic strip; 33, insulating piece; 331, insulating wing; 3311, first wing plate; 3312, second wing plate; 3313, wear-resistant layer; 3314, wave wrinkle part; 3315, clamping block; 3316, water baffle; 33161, second accommodating groove; 33162, round corner; 332, gauge block; 34, clamping groove; 4, steel rail. DETAILED DESCRIPTION

[0024] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0025] In the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential" and the like 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 application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0026] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0027] As Figures 1 to 6The utility model discloses an insulation reinforced type track fastener, including metal backing plate 1, insulating rail lower backing plate 2, two side connecting components 3, insulating rail lower backing plate 2 is located metal backing plate 1's top surface, the top surface of insulating rail lower backing plate 2 is used for the bottom surface of supporting steel rail 4, the both ends of insulating rail lower backing plate 2 relative to the front and back direction respectively protrude from the both sides of metal backing plate 1 relative to the front and back direction, two side connecting components 3 are located respectively in the both sides of insulating rail lower backing plate 2 along left and right directions, side connecting component 3 includes fixed seat 31, elastic strip 32 and insulating piece 33, fixed seat 31 is fixed in metal backing plate 1's top surface, insulating piece 33 and insulating rail lower backing plate 2 enclose clamping groove 34, one end of elastic strip 32 is connected to fixed seat 31, the other end is pressed on the top surface of insulating piece 33, to reduce the height of clamping groove 34 along the vertical direction, and then make insulating piece 33 and insulating rail lower backing plate 2 clamp steel rail 4, the both ends of insulating piece 33 relative to the front and back direction respectively protrude from the both sides of metal backing plate 1 relative to the front and back direction.

[0028] In the above technical solution, the length of the insulating rail lower backing plate 2 is greater than that of the metal backing plate 1, and the two sides of the insulating rail lower backing plate 2 protrude from the two sides of the metal backing plate 1. The insulating rail lower backing plate 2 is arranged on the top surface of the metal backing plate 1 to support the bottom surface of the steel rail 4, preventing the current on the steel rail 4 from climbing to the metal backing plate 1 through the bottom surface of the steel rail 4. Further, the side connecting components 3 are arranged on the opposite sides of the insulating rail lower backing plate 2 along the left and right directions to connect the steel rail 4 from the left and right directions. The insulating piece 33 of the side connecting component 3 and the insulating rail lower backing plate 2 enclose the clamping groove 34. The fixed seat 31 and the elastic strip 32 of the side connecting component 3 are pressed on the top surface of the insulating piece 33 to reduce the height of the clamping groove 34 along the vertical direction, and then make the insulating piece 33 and the insulating rail lower backing plate 2 clamp the steel rail 4, achieving the effect of connecting the steel rail 4. Further, the insulating piece 33 blocks the side surface and a part of the top surface of the rail bottom of the steel rail 4, and the insulating rail lower backing plate 2 blocks the bottom surface of the steel rail 4. The lengths of both the insulating piece 33 and the insulating rail lower backing plate 2 are greater than that of the metal backing plate 1, and both protrude from the two sides of the metal backing plate 1, preventing the current on the steel rail 4 from climbing to the metal backing plate 1 through the side surface of the rail bottom of the steel rail 4. In summary, the insulation reinforced type track fastener greatly increases the creepage distance between the steel rail 4 and the metal backing plate 1, effectively reduces the current leakage of the steel rail 4 at the insulation reinforced type track fastener, and makes the insulation reinforced type track fastener less likely to be damaged due to current leakage. In addition, multiple fasteners can be arranged on the metal backing plate 1 to be fixed to the ground.

[0029] Further, multiple first grooves 21 are arranged on the top surface of the insulating rail lower backing plate 2 along the left and right directions, and multiple second grooves 22 are arranged on the bottom surface of the insulating rail lower backing plate 2 along the left and right directions, making the insulating rail lower backing plate 2 more easily deformed to increase its shock-absorbing effect.

[0030] Further, the bottom surface of the insulating rail base plate 2 is provided with two positioning protrusions 23 extending along the left-right direction, and the two positioning protrusions 23 are respectively located on the two sides of the metal base plate 1 along the front-rear direction, so as to facilitate the centering and installation of the insulating rail base plate 2 and the metal base plate 1.

[0031] Further, the insulating piece 33 comprises an insulating wing 331 and a gauge block 332, the clamping groove 34 is surrounded by the insulating wing 331 and the insulating rail base plate 2, the two ends of the insulating wing 331 relative to the front-rear direction protrude from the two sides of the metal base plate 1 relative to the front-rear direction, the side surface of the gauge block 332 relative to the fixed seat 31 is provided with a first accommodating groove, the fixed seat 31 is located in the first accommodating groove, the elastic strip 32 is pressed on the top surface of the gauge block 332, and the bottom surface of the gauge block 332 is pressed on the top surface of the insulating wing 331, wherein the side guard plate is used to isolate the side surface and part of the top surface of the rail bottom of the steel rail 4, the gauge block 332 is used to directly bear the pressure of the elastic strip 32, the pressure is transmitted to the insulating wing 331, the pressure intensity borne by the insulating wing 331 is reduced, the deformation or damage of the insulating wing 331 caused by the relatively large pressure intensity is prevented, and further, the first accommodating groove can be matched with the fixed seat 31 to limit the movement of the gauge block 332 along the horizontal direction.

[0032] Further, the insulating wing 331 comprises a first wing plate 3311 and a second wing plate 3312, the top end of the second wing plate 3312 is connected to the first wing plate 3311, the clamping groove 34 is surrounded by the bottom surface of the first wing plate 3311, the side surface of the second wing plate 3312 and the top surface of the insulating rail base plate 2, and the bottom surface of the gauge block 332 is pressed on the top surface of the first wing plate 3311, wherein the first wing plate 3311 and the second wing plate 3312 have an angle therebetween, the second wing plate 3312 is arranged along the vertical direction, and the first wing plate 3311 is arranged along the slope surface shape of the rail bottom of the steel rail 4.

[0033] Further, the top surface of the first wing plate 3311 is provided with a wear-resistant layer 3313, and the gauge block 332 is pressed on the wear-resistant layer 3313, wherein when the train passes, the position where the gauge block 332 and the first wing plate 3311 contact will generate relatively intense friction, and the wear-resistant layer 3313 with strong wear resistance is arranged at the position where the gauge block 332 is pressed on the first wing plate 3311, so as to reduce the wear caused by the friction.

[0034] Further, the two side surfaces of the insulating rail base plate 2 relative to the left-right direction are respectively provided with a clamping groove extending along the front-rear direction, the clamping groove corresponds to the second wing plate 3312, the groove bottom of the clamping groove is provided with a clamping hole, the insulating wing 331 further comprises a wave wrinkle part 3314 and a clamping block 3315, the wave wrinkle part 3314 is arranged in the clamping groove, one end of the wave wrinkle part 3314 is connected to the side surface of the second wing plate 3312, and the other end is connected to the clamping block 3315, and the clamping block 3315 is clamped in the clamping hole, so that the insulating wing 331 can be inserted into the side surface of the insulating rail base plate 2 to complete the installation, and the installation is very convenient, wherein the wave wrinkle part 3314 enables the insulating wing 331 to be elastically deformed to a certain extent along the left-right direction, so as to prevent the insulating wing 331 from being seriously damaged.

[0035] Further, the insulating wing 331 further comprises a water blocking strip 3316, the water blocking strip 3316 is arranged on the top surface of the first wing plate 3311, and the top surface of the water blocking strip 3316 is higher than the top surface of the rail gauge block 332, so as to block the pollutants (solid and liquid) flowing from top to bottom and reduce the possibility that the pollutants directly conduct to the metal base plate 1; specifically, the water blocking strip 3316 is provided with an arc-shaped second containing groove 33161 penetrating through the side surface of the water blocking strip 3316 along the front-rear direction, and one end of the rail gauge block 332 is located in the second containing groove 33161, so as to cover the rail gauge block 332 and prevent the pollutants from gathering at the rail gauge block 332, and the height of the top surface of the water blocking strip 3316 gradually increases from the side away from the rail gauge block 332 to the side close to the rail gauge block 332, so as to slide the accumulated pollutants along the higher position and prevent the pollutants from accumulating at the rail gauge block 332, and the top edge and the bottom edge of the side of the water blocking strip 3316 away from the rail gauge block 332 are both provided with a round corner 33162.

[0036] Further, the insulating wing 331 is made of a non-metallic elastic material, so as to facilitate installation and wrap the top surface of the steel rail 4.

[0037] Further, the distance between the insulating part 33 and the insulating rail base plate 2 protruding from the base plate 1 is greater than 40 mm, so as to ensure the insulation effect of the insulating part 33 and the insulating rail base plate 2.

[0038] Further, the side surface of the fixing seat 31 is provided with a mounting hole 311, and one end of the elastic strip 32 is inserted into the mounting hole 311, and specifically, the mounting hole 311 can penetrate through the fixing seat 31 along the front-rear direction.

[0039] Further, the specific connection mode of the fixed setting and the fixed connection refers to the relative position relationship of the two components that can be fixed and connected, including fixing through a connecting piece, fixing through welding, fixing through an adhesive, fixing through one-piece molding, and fixing through a buckle connection.

[0040] Further, the connecting piece includes a fastener, a strap, a binding rope, a pneumatic connecting element, a hydraulic connecting element, a flange plate, a magic tape, and a button.

[0041] In summary, the insulating enhanced rail fastener has the following technical effects:

[0042] In the utility model, the insulating rail lower base plate 2 with a length greater than the metal base plate 1 and protruding from the two sides of the metal base plate 1 is arranged on the top surface of the metal base plate 1, and the bottom surface of the steel rail 4 is supported by the insulating rail lower base plate 2 to prevent the current on the steel rail 4 from climbing to the metal base plate 1 through the bottom surface of the steel rail 4. Further, the side connecting assembly 3 is arranged on the two opposite sides of the insulating rail lower base plate 2 in the left-right direction to connect the steel rail 4 from the left-right direction, wherein the insulating piece 33 of the insulating rail lower base plate 2 and the side connecting assembly 3 encloses the clamping groove 34, the fixed seat 31 and the elastic strip 32 of the side connecting assembly 3 are pressed on the top surface of the insulating piece 33 to reduce the height of the clamping groove 34 in the vertical direction, and then the insulating piece 33 and the insulating rail lower base plate 2 clamp the steel rail 4 to achieve the effect of connecting the steel rail 4. Further, the insulating piece 33 shields the side surface and part of the top surface of the rail bottom of the steel rail 4, the insulating rail lower base plate 2 shields the bottom surface of the steel rail 4, and the lengths of both are greater than the metal base plate 1 and protrude from the two sides of the metal base plate 1, which can prevent the current on the steel rail 4 from climbing to the metal base plate 1 through the side surface of the rail bottom of the steel rail 4. In summary, the insulating enhanced rail fastener greatly increases the creepage distance of the steel rail 4 and the metal base plate 1, effectively reduces the current leakage of the steel rail 4 at the insulating enhanced rail fastener, and makes the insulating enhanced rail fastener less likely to be damaged due to current leakage.

[0043] The above only describes the preferred embodiments of the utility model, and it should be noted that, for ordinary skilled persons in the technical field, several improvements and replacements can be made without departing from the technical principles of the utility model, and these improvements and replacements should also be considered as the protection range of the utility model.

Claims

1. An insulation-enhanced track fastener, characterized in that, The system includes a metal pad (1), an insulating rail under-pad (2), and two side connecting assemblies (3). The insulating rail under-pad (2) is located on the top surface of the metal pad (1) and its top surface supports the bottom surface of the rail (4). The insulating rail under-pad (2) protrudes from the two sides of the metal pad (1) in the front-rear direction. The two side connecting assemblies (3) are located on opposite sides of the insulating rail under-pad (2) in the left-right direction. Each side connecting assembly (3) includes a fixing seat (31), a spring clip (32), and an insulating component (33). The fixing seat (31) is fixedly disposed on the top surface of the metal pad (1). The insulating member (33) and the insulating rail pad (2) form a clamping groove (34). One end of the elastic bar (32) is connected to the fixing seat (31), and the other end is pressed against the top surface of the insulating member (33) to reduce the height of the clamping groove (34) in the vertical direction, thereby clamping the rail (4) between the insulating member (33) and the insulating rail pad (2). The two ends of the insulating member (33) and the insulating rail pad (2) protrude from the two sides of the metal pad (1) in the front-back direction, respectively.

2. The insulation-reinforced track fastener according to claim 1, characterized in that, The bottom surface of the insulating rail pad (2) is provided with two positioning protrusions (23) extending in the left and right direction. The two positioning protrusions (23) are located on both sides of the metal pad (1) in the front and back direction, respectively.

3. The insulation-reinforced track fastener according to claim 1, characterized in that, The insulating component (33) includes an insulating wing (331) and a gauge block (332). The clamping groove (34) is formed by the insulating wing (331) and the insulating rail pad (2). The insulating wing (331) protrudes from the two sides of the metal pad (1) in the front-rear direction at both ends. The gauge block (332) has a first receiving groove on the side of the fixed seat (31). The fixed seat (31) is located in the first receiving groove. The elastic bar (32) presses against the top surface of the gauge block (332). The bottom surface of the gauge block (332) presses against the top surface of the insulating wing (331).

4. The insulation-reinforced track fastener according to claim 3, characterized in that, The insulating wing (331) includes a first wing plate (3311) and a second wing plate (3312). The top end of the second wing plate (3312) is connected to the first wing plate (3311). The clamping groove (34) is formed by the bottom surface of the first wing plate (3311), the side surface of the second wing plate (3312), and the top surface of the insulating rail pad (2). The bottom surface of the gauge block (332) presses against the top surface of the first wing plate (3311).

5. The insulation-reinforced track fastener according to claim 4, characterized in that, The top surface of the first wing plate (3311) is provided with a wear-resistant layer (3313), and the gauge block (332) presses against the wear-resistant layer (3313).

6. The insulation-reinforced track fastener according to claim 4, characterized in that, The insulating rail pad (2) has slots extending in the front-back direction on its two sides in the left-right direction. Each slot corresponds to the second wing plate (3312). The bottom of the slot has a locking hole. The insulating wing (331) also includes a corrugated part (3314) and a locking block (3315). The corrugated part (3314) is located in the slot. One end of the corrugated part (3314) is connected to the side of the second wing plate (3312), and the other end is connected to the locking block (3315). The locking block (3315) is engaged with the locking hole.

7. The insulation-reinforced track fastener according to claim 4, characterized in that, The insulating wing (331) also includes a water-blocking strip (3316), which is disposed on the top surface of the first wing plate (3311), and the top surface of the water-blocking strip (3316) is higher than the top surface of the gauge block (332).

8. The insulation-reinforced track fastener according to claim 7, characterized in that, The water-blocking strip (3316) has an arc-shaped second receiving groove (33161) that runs through the front and rear direction on the side of the gauge block (332). One end of the gauge block (332) relative to the water-blocking strip (3316) is located in the second receiving groove (33161). The height of the top surface of the water-blocking strip (3316) gradually increases from the side away from the gauge block (332) to the side closer to the gauge block (332). The top and bottom edges of the side of the water-blocking strip (3316) away from the gauge block (332) are both rounded (33162).

9. The insulation-reinforced track fastener according to claim 3, characterized in that, The insulating wing (331) is made of a non-metallic elastic material.

10. The insulation-reinforced track fastener according to claim 1, characterized in that, The distance between the insulating component (33) and the insulating rail pad (2) protruding from the metal pad (1) is greater than 40 mm.

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