Nylon substrate metal insert reinforced fastener for urban rail transit

Abstract

The utility model relates to the technical field of rail transit, in particular to a nylon substrate metal insert reinforced fastener for urban rail transit, which comprises a nylon substrate base and a steel rail. The spiral spike penetrates through the annular gasket and the elastic strip, slides into the through hole and is screwed into the preset sleeve, the inner wall of the through hole is in contact with the inclined surface part of the rotating block and extrudes the inclined surface part, the rotating block extrudes the elastic air bag, and sealant in the elastic air bag is sprayed to the inner wall of the through hole through the T-shaped pipe. When the rotating block slides out of the through hole, the rotating block resets, the top of the rotating block makes contact with the bottom of the nylon base plate base, and therefore when the spiral spike and the preset sleeve are loosened in fastening, the spiral spike can be fixed to the bottom of the nylon base plate base. And the top of the rotating block can still be limited and fixed with the bottom of the nylon substrate base, so that the problem of loosening and failure of the elastic strip fastener is avoided, and the safety is relatively high.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit, in particular to a nylon base plate metal insert reinforced fastener for urban rail transit. Background Art

[0002] Track fasteners are one of the core components of railway track engineering. They can maintain a reliable connection between the rails and the foundation under the rails, prevent the longitudinal and lateral movement of the rails, prevent the rails from tipping over, and provide a certain degree of elasticity for the track structure. There are many types of track fasteners, among which bolt spring clip fasteners are widely used on many lines. This type of track fastener uses spiral spikes anchored in concrete sleepers to tighten the spring clips, and the spring clips on both sides buckle the rails to complete the fixation of the rails.

[0003] However, most of the current rail fasteners are fastened by using screw spikes in conjunction with preset sleeves to lock the spring clip fasteners. This common fastener locking method often causes the fasteners to loosen under the high vibration environment of the track, resulting in the spring clip fasteners becoming loose and failing, which may affect the normal use of the track. For safety reasons, manual inspections are required within a certain period to determine whether the fasteners are loose, which consumes a lot of labor and poses certain safety hazards. To this end, we propose a nylon-based metal insert reinforced urban rail transit fastener to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a nylon base metal insert reinforced urban rail transit fastener to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nylon substrate metal insert reinforced urban rail transit fastener, comprising a nylon substrate base and a rail, a metal plate is embedded in the interior of the nylon substrate base, a through hole is opened on the top of the nylon substrate base, a pad is placed on the top of the nylon substrate base, the rail is placed on the top of the pad, gauge baffles are placed on both sides of the rail, elastic bars are placed on the top of the gauge baffles, annular gaskets are placed on the top of the elastic bars, a spiral spike is slidably connected inside the through hole, and the nylon substrate base, the pad, the rail, the gauge baffle, the elastic bar and the annular gasket are fixed by matching the threads at the bottom of the spiral spikes with the external embedded sleeve;

[0006] Side cutouts are provided on both sides of the spiral spike, a rectangular hole is provided on the left side of the spiral spike, a rotating block is rotatably connected between the front and rear inner walls of the rectangular hole through a pin shaft, and an elastic air bag is provided between the two rotating blocks.

[0007] Further preferably, a T-shaped tube is embedded inside the spiral spike.

[0008] Further preferably, the bottom end of the T-shaped tube is connected to and fixed to the elastic airbag.

[0009] Further preferably, the interior of the elastic airbag is filled with sealant.

[0010] Further preferably, a torsion spring is fixedly connected between the rotating block and the bottom inner wall of the rectangular hole.

[0011] Further preferably, the material of the nylon substrate base is nylon, and the nylon material has good corrosion resistance and insulation properties, which greatly enhances the corrosion resistance and insulation properties of the fastener.

[0012] Further preferably, the metal plate is made of alloy steel, and the embedded metal plate is used to enhance the strength of the nylon substrate base.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the utility model places the nylon base plate under the rail, then places the pad on the top of the nylon base plate, places the rail on the top of the pad, places the gauge baffle on both sides of the rail, places the elastic strip and the annular gasket on the top of the gauge baffle, then slides the spiral spike through the annular gasket and the elastic strip into the through hole, and screws the bottom end of the spiral spike into the preset sleeve, the inner wall of the through hole contacts and squeezes the inclined surface of the rotating block, the two rotating blocks rotate in a direction close to each other, the rotating block squeezes the elastic airbag, the torsion spring is compressed, and the elastic airbag is The sealant in the airbag is pressurized and then discharged through the T-shaped tube. The sealant is sprayed onto the inner wall of the through hole, and the spiral spike continues to move downward so that the spiral spike at the top is fully in contact with the sealant on the inner wall of the through hole, thereby sealing the through hole. When the rotating block slides out of the through hole, the torsion spring that loses the extrusion force drives the rotating block to reset, and the top of the rotating block contacts the bottom of the nylon base plate base. Therefore, when the spiral spike is loosened from the preset sleeve, the top of the rotating block can still be limited and fixed with the bottom of the nylon base plate base, avoiding the problem of loosening and failure of the elastic fastener, and having higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the main perspective exploded view of the utility model;

[0015] Figure 2 This is a schematic diagram of the cross-sectional planar structure of the nylon substrate base of the utility model;

[0016] Figure 3 It is a schematic diagram of the three-dimensional structure of the spiral spike of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal cross-sectional plan structure of the screw-shaped road spike of the utility model;

[0018] Figure 5 for Figure 3 Schematic diagram of the enlarged three-dimensional structure of area A in the middle.

[0019] In the figure: 1. nylon substrate base; 2. metal plate; 3. pad; 4. rail; 5. gauge baffle; 6. spring bar; 7. annular gasket; 8. through hole; 9. spiral spike; 10. side cutout; 11. rectangular hole; 12. elastic airbag; 13. rotating block; 14. T-tube; 15. torsion spring; 16. sealant. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example

[0022] See also Figure 1-5 The utility model provides a technical solution: a nylon substrate metal insert reinforced urban rail transit fastener, comprising a nylon substrate base 1 and a rail 4, a metal plate 2 is embedded inside the nylon substrate base 1, a through hole 8 is opened on the top of the nylon substrate base 1, a pad 3 is placed on the top of the nylon substrate base 1, the rail 4 is placed on the top of the pad 3, gauge baffles 5 are placed on both sides of the rail 4, elastic bars 6 are placed on the top of the gauge baffle 5, an annular gasket 7 is placed on the top of the elastic bar 6, a screw spike 9 is slidably connected inside the through hole 8, and the nylon substrate base 1, the pad 3, the rail 4, the gauge baffle 5, the elastic bar 6 and the annular gasket 7 are fixed by matching the threads at the bottom of the screw spike 9 with the external embedded sleeve;

[0023] Side cutouts 10 are provided on both sides of the spiral spike 9, a rectangular hole 11 is provided on the left side of the spiral spike 9, a rotating block 13 is rotatably connected between the front and rear inner walls of the rectangular hole 11 through a pin shaft, and an elastic air bag 12 is provided between the two rotating blocks 13. The nylon base base 1 is placed under the rail 4, and then the pad 3 is placed on the top of the nylon base base 1, the rail 4 is placed on the top of the pad 3, the gauge baffle 5 is placed on both sides of the rail 4, the elastic bar 6 and the annular gasket 7 are placed on the top of the gauge baffle 5, and then the spiral spike 9 passes through the annular gasket 7 and the elastic bar 6 and slides into the through hole 8, and the bottom end of the spiral spike 9 is screwed into the preset sleeve, the inner wall of the through hole 8 contacts and squeezes the inclined portion of the rotating block 13, and the two rotating blocks 13 rotate in a direction close to each other. The rotating block 13 squeezes the elastic airbag 12, the torsion spring 15 is compressed, the sealant 16 in the elastic airbag 12 is pressurized, and then discharged through the T-shaped tube 14, and the sealant 16 is sprayed onto the inner wall of the through hole 8, and the spiral spike 9 continues to move downward so that the spiral spike 9 at the top is fully in contact with the sealant 16 on the inner wall of the through hole 8, thereby sealing the through hole 8. When the rotating block 13 slides out of the through hole 8, the torsion spring 15 that loses the squeezing force drives the rotating block 13 to reset, and the top of the rotating block 13 contacts the bottom of the nylon substrate base 1, so that when the spiral spike 9 is loosened from the preset sleeve, the top of the rotating block 13 can still be limited and fixed with the bottom of the nylon substrate base 1, avoiding the problem of loosening and failure of the elastic strip fastener, and having higher safety.

[0024] In this embodiment, specifically: a T-shaped tube 14 is embedded inside the spiral spike 9, and the setting of the T-shaped tube 14 plays a role in transportation;

[0025] In this embodiment, specifically: the bottom end of the T-shaped tube 14 is connected to and fixed with the elastic airbag 12, and the setting of the elastic airbag 12 plays a role in storing materials;

[0026] In this embodiment, specifically: the elastic airbag 12 is filled with a sealant 16, and the sealant 16 has a sealing effect;

[0027] In this embodiment, specifically: a torsion spring 15 is fixedly connected between the rotating block 13 and the bottom inner wall of the rectangular hole 11, and the setting of the torsion spring 15 plays a resetting effect;

[0028] In this embodiment, specifically: the material of the nylon substrate base 1 is nylon, and the nylon material has good corrosion resistance and insulation properties, which greatly enhances the corrosion resistance and insulation properties of the fastener;

[0029] In this embodiment, specifically: the material of the metal plate 2 is alloy steel, and the embedded metal plate 2 is used to enhance the strength of the nylon substrate base 1 .

[0030] The utility model is in operation: when in use, the nylon base base 1 is placed under the rail 4, and then the pad 3 is placed on the top of the nylon base base 1, the rail 4 is placed on the top of the pad 3, the gauge baffle 5 is placed on both sides of the rail 4, the spring bar 6 and the annular gasket 7 are placed on the top of the gauge baffle 5, and then the spiral spike 9 passes through the annular gasket 7 and the spring bar 6 and slides into the through hole 8, and the bottom end of the spiral spike 9 is screwed into the preset sleeve, the inner wall of the through hole 8 contacts and squeezes the inclined portion of the rotating block 13, the two rotating blocks 13 rotate in a direction close to each other, the rotating block 13 squeezes the elastic airbag 12, the torsion spring 15 is compressed, and the elastic airbag 12 is compressed. The sealant 16 is pressurized and then discharged through the T-shaped tube 14. The sealant 16 is sprayed onto the inner wall of the through hole 8. The spiral spike 9 continues to move downward so that the spiral spike 9 at the top is fully in contact with the sealant 16 on the inner wall of the through hole 8, thereby sealing the through hole 8. When the rotating block 13 slides out of the through hole 8, the torsion spring 15 that loses the extrusion force drives the rotating block 13 to reset, and the top of the rotating block 13 is in contact with the bottom of the nylon base base 1. Therefore, when the spiral spike 9 is loosened from the preset sleeve, the top of the rotating block 13 can still be limited and fixed with the bottom of the nylon base base 1, avoiding the problem of loosening and failure of the elastic fastener, and having higher safety.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A nylon-based metal insert reinforced urban rail transit fastener, comprising a nylon-based base (1) and a rail (4), characterized in that: A metal plate (2) is embedded inside the nylon base base (1), a through hole (8) is opened on the top of the nylon base base (1), a pad (3) is placed on the top of the nylon base base (1), the steel rail (4) is placed on the top of the pad (3), gauge baffles (5) are placed on both sides of the steel rail (4), elastic bars (6) are placed on the top of the gauge baffle (5), an annular gasket (7) is placed on the top of the elastic bars (6), a screw spike (9) is slidably connected inside the through hole (8), and the nylon base base (1), the pad (3), the steel rail (4), the gauge baffle (5), the elastic bar (6) and the annular gasket (7) are fixed by matching the threads at the bottom of the screw spike (9) with an external embedded sleeve; Side cutouts (10) are provided on both sides of the spiral spike (9), a rectangular hole (11) is provided on the left side of the spiral spike (9), a rotating block (13) is rotatably connected between the front and rear inner walls of the rectangular hole (11) via a pin shaft, and an elastic air bag (12) is provided between the two rotating blocks (13).

2. A nylon-based metal insert reinforced urban rail transit fastener according to claim 1, characterized in that: A T-shaped tube (14) is embedded inside the screw-shaped spike (9).

3. A nylon-based metal insert reinforced urban rail transit fastener according to claim 2, characterized in that: The bottom end of the T-shaped tube (14) is connected to and fixed to the elastic airbag (12).

4. The nylon-based metal insert reinforced urban rail transit fastener according to claim 3, characterized in that: The interior of the elastic airbag (12) is filled with sealant (16).

5. The nylon-based metal insert reinforced urban rail transit fastener according to claim 4, characterized in that: A torsion spring (15) is fixedly connected between the rotating block (13) and the bottom inner wall of the rectangular hole (11).

6. The nylon-based metal insert reinforced urban rail transit fastener according to claim 5, characterized in that: The material of the nylon base plate base (1) is nylon, and the nylon material has good corrosion resistance and insulation properties, which greatly enhances the corrosion resistance and insulation properties of the fastener.

7. The nylon-based metal insert reinforced urban rail transit fastener according to claim 6, characterized in that: The material of the metal plate (2) is alloy steel, and the embedded metal plate (2) is used to enhance the strength of the nylon base plate base (1).

Images