An integrated anti-torsion wiring device for magnetic rail brake

Abstract

The invention discloses an integrated anti-torsion wiring device for a magnetic rail brake, comprising a shell, which is a rectangular parallelepiped, with first threaded holes at both left and right ends of the shell, two symmetrical second threaded holes at one side of the shell, and an opening at the other side of the shell. Two unconnected cavities are arranged inside the shell, and the cavities are connected to the second threaded holes. A square sink is arranged near the opening of the shell, an insulating plate is installed on the square sink, the insulating plate is provided with two through holes corresponding to the central axis of the second threaded holes, strip grooves are arranged around the outer through holes of the insulating plate, and wiring studs are installed on the through holes; the purpose of anti-torsion of the wiring device is achieved, installation space is saved, the reliability of electrical connection is improved, and the sealing and waterproof properties of the magnetic rail brake are increased.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit vehicle braking, and more specifically, to an integral torsion-resistant wiring device for a magnetic rail brake. Background Art

[0002] Magnetic rail braking is a technology in the field of rail transit vehicle braking. It is a new type of braking method that generates braking force using electromagnetic suction.

[0003] A magnetic rail brake is a core component in magnetic rail braking technology. It belongs to a special-purpose electromagnet, and its structure is similar to that of a common electromagnet. Generally, it consists of a skeleton, a coil, and a housing. Conventional electromagnets usually weld an outlet box on the housing. A wiring stud is arranged inside the outlet box, and the coil lead wire is welded to the end of the wiring stud. The power supply cable is fastened to the wiring screw through a nut. Although this structure solves the wiring problem of the electromagnet, it has the following disadvantages.

[0004] First, conducting electricity through threads has poor reliability and does not meet the relevant standards of rail transit.

[0005] Second, the torsion resistance is poor. When replacing the cable and turning the nut, it is easy for the wiring stud to rotate, pulling the lead wire welded to the wiring stud, which may cause the solder joint to crack and the coil to open.

[0006] The working environment of the magnetic rail brake is harsh, with high operating speed, large vibration, and significant differences in temperature and humidity changes. Therefore, the cable of the magnetic rail brake needs to be replaced regularly during its life cycle, which poses relatively high requirements for the reliability of its wiring structure.

[0007] For the problems in the related art, no effective solution has been proposed yet. Summary of the Invention

[0008] In view of the above technical problems in the related art, the present invention provides an integral torsion-resistant wiring device for a magnetic rail brake, which can have strong torsion resistance, good electrical conductivity, meet the requirements of frequent disassembly and assembly, and has a compact structure, saving installation space.

[0009] To achieve the above technical objectives, the technical solution of the present invention is realized as follows:

[0010] An integral torsion-resistant wiring device for a magnetic track brake, comprising a housing. The housing is a cuboid. First threaded holes are provided at both the left and right ends of the housing. Two symmetric second threaded holes are provided on one side of the housing. The other side of the housing is an opening. Two non-connected cavities are provided inside the housing. The cavities communicate with the second threaded holes. A square counterbore is provided near the opening of the housing. An insulating plate is installed on the square counterbore. The insulating plate is provided with two through holes corresponding to the central axes of the second threaded holes. Strip-shaped grooves are provided around the outer through holes of the insulating plate. Wiring studs are installed on the through holes.

[0011] Further, a first sealing groove is provided on the first threaded hole. A gland is threadedly connected to the first threaded hole. A power cord is fixedly installed on the gland. The end of the power cord extends into the cavity. A wiring terminal is fixedly connected to the end of the power cord.

[0012] Further, a second sealing groove is provided on the second threaded hole. A sealing cover is threadedly connected to the second threaded hole.

[0013] Further, the insulating plate is made of an insulating material such as polytetrafluoroethylene or polyimide. The two through holes on the insulating plate are respectively provided with a first strip-shaped groove and a second strip-shaped groove. An upper concave platform is provided upward in the middle of the first strip-shaped groove. A first transition plate is installed on the first strip-shaped groove. A lower concave platform is provided downward on the left side of the second strip-shaped groove. A second transition plate is installed on the second strip-shaped groove. Both the first transition plate and the second transition plate are fixedly installed by threaded connection with the wiring stud.

[0014] Further, a first extending plate bent 90 degrees is provided above the first transition plate and is connected to a first coil lead-out wire. A second extending plate bent 90 degrees is provided below the second transition plate and is connected to a second coil lead-out wire.

[0015] Further, the wiring stud is made of a conductive metal material. The wiring stud is divided into three parts: a bottom section, a middle section, and a threaded section. The end face of the bottom section is parallel to the end face of the insulating plate. The middle section passes through the through hole. A circular clamping groove is provided on the middle section. A shaft retaining ring is installed on the clamping groove. A wiring terminal, a flat washer, a spring washer, and a nut are sequentially installed on the threaded section. The diameter of the bottom section is larger than the diameter of the middle section. The diameter of the middle section is larger than the diameter of the threaded section.

[0016] Further, the outer side of the insulating plate is welded to the magnetic track brake housing. There is a fully sealed weld between the insulating plate and the magnetic track brake housing.

[0017] The beneficial effects of the present invention:

[0018] 1. Improved torsional resistance: The torque of the bolt is transmitted layer by layer and finally acts on the outer shell, which can effectively prevent the wiring stud from rotating under the action of torque and damaging the lead connection point, achieving the purpose of torsional resistance of the wiring device.

[0019] 2. Saved installation space: The wiring device has few parts and a compact structure, can be made very small, and especially saves installation space.

[0020] 3. Improved reliability of electrical connection: The wiring device conducts electricity through surface contact, with high conductivity reliability, fully meeting the relevant electrical connection standards for rail transit.

[0021] 4. Good waterproof performance: The wiring device achieves full sealing through the sealing ring and weld, with watertightness. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0023] Figure 1 It is a three-dimensional exploded view of an integral torsional-resistant wiring device for a magnetic rail brake according to the present invention;

[0024] Figure 2 It is a three-dimensional exploded view of an integral torsional-resistant wiring device for a magnetic rail brake according to the present invention;

[0025] Figure 3 It is a top view of an integral torsional-resistant wiring device for a magnetic rail brake according to the present invention;

[0026] Figure 4 It is a cross-sectional view taken along line A-A of an integral torsional-resistant wiring device for a magnetic rail brake according to the present invention;

[0027] Figure 5 It is a structural schematic diagram of the insulating plate according to the present invention;

[0028] Figure 6 It is a structural schematic diagram of the wiring stud according to the present invention;

[0029] Figure 7 It is a structural schematic diagram of the housing according to the present invention;

[0030] Figure 8 It is a front view of the installation of an integral torsional-resistant wiring device for a magnetic rail brake according to the present invention;

[0031] Figure 9This is the rear view of the installation of an integral torsion-resistant wiring device for a magnetic track brake according to the present invention.

[0032] In the figure:

[0033] 1. Cable gland; 2. Insulating plate; 2-1. Through hole; 2-2. First strip-shaped groove; 2-3. Second strip-shaped groove; 3. First transition plate; 3-1. Second transition plate; 4. Wiring stud; 4-1. Bottom section; 4-2. Middle section; 4-3. Card slot; 4-4. Threaded section; 5. Wiring terminal; 6. Flat washer; 7. Elastic washer; 8. Sealing cover; 9. Nut; 10. Housing; 10-1. Second threaded hole; 10-2. Second sealing groove; 10-3. First threaded hole; 10-4. First sealing groove; 10-5. Square counterbore; 10-6. Circular cavity; 11. Shaft retaining ring; 12. Power cord; 13. Magnetic track brake housing; 14. Weld seam. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present invention.

[0035] As Figures 1-3 shown, an integral torsion-resistant wiring device for a magnetic track brake according to an embodiment of the present invention includes a housing 10. The housing 10 is a cuboid. First threaded holes 10-3 are provided at both the left and right ends of the housing 10. Two symmetric second threaded holes 10-1 are provided on one side of the housing 10. The other side of the housing 10 is an opening. Two non-connecting cavities 10-6 are provided inside the housing 10. The cavities 10-6 communicate with the second threaded holes 10-1. A square counterbore 10-5 is provided near the opening of the housing 10. An insulating plate 2 is installed on the square counterbore 10-5. The insulating plate 2 is provided with two through holes 2-1 corresponding to the central axes of the second threaded holes 10-1. Strip-shaped grooves are provided around the outer through holes 2-1 of the insulating plate 2. Wiring studs 4 are installed on the through holes 2-1.

[0036] As Figures 6-7 shown, in a specific embodiment of the present invention, a first sealing groove 10-4 is provided on the first threaded hole 10-3. A cable gland 1 is threadedly connected to the first threaded hole 10-3. The cable gland 1 is fixedly installed with a power cord 12. The end of the power cord 12 extends into the cavity 10-6. The end of the power cord 12 is fixedly connected to a wiring terminal 5.

[0037] In a specific embodiment of the present invention, a second sealing groove 10-2 is provided on the second threaded hole 10-1, and a sealing cover 8 is threadedly connected to the second threaded hole 10-1.

[0038] As Figure 4 shown, in a specific embodiment of the present invention, the insulating plate 2 is made of an insulating material such as polytetrafluoroethylene or polyimide. Two through holes 2-1 on the insulating plate 2 are respectively provided with a first strip-shaped groove 2-2 and a second strip-shaped groove 2-3. An upper concave platform is provided upward in the middle of the first strip-shaped groove 2-2, and a first transition plate 3 is installed on the first strip-shaped groove 2-2. A lower concave platform is provided downward on the left side of the second strip-shaped groove 2-3, and a second transition plate 3-1 is installed on the second strip-shaped groove 2-3. The first transition plate 3 and the second transition plate 3-1 are both fixedly threaded by a wiring stud 4.

[0039] In a specific embodiment of the present invention, a first extension plate bent 90 degrees is provided above the first transition plate 3 and connected to a first coil lead-out wire, and a second extension plate bent 90 degrees is provided below the second transition plate 3-1 and connected to a second coil lead-out wire.

[0040] As Figure 5 shown, in a specific embodiment of the present invention, the wiring stud 4 is made of a conductive metal material. The wiring stud 4 is divided into three parts: a bottom section 4-1, a middle section 4-2, and a threaded section 4-4. The end face of the bottom section 4-1 is parallel to the end face of the insulating plate 2. The middle section 4-2 passes through the through hole 2-1. The middle section 4-2 is provided with a circular clamping groove 4-3, and a shaft retaining ring 11 is installed on the clamping groove 4-3. A wiring terminal 5, a flat washer 6, a spring washer 7, and a nut 9 are sequentially installed on the threaded section 4-4. The diameter of the bottom section 4-1 is greater than the diameter of the middle section 4-2, and the diameter of the middle section 4-2 is greater than the diameter of the threaded section 4-4.

[0041] In a specific embodiment of the present invention, a magnetic track brake housing 13 is welded outside the insulating plate 2, and there is a fully sealed weld 14 between the insulating plate 2 and the magnetic track brake housing 13.

[0042] To facilitate the understanding of the above technical solutions of the present invention, the above technical solutions of the present invention will be described in detail below through specific usage methods.

[0043] An integral torsion-resistant wiring device for a magnetic track brake according to the present invention is mainly applied to the technical field of rail transit vehicle braking, and includes a gland 1, an insulating plate 2, a wiring stud 4, a wiring terminal 5, a flat washer 6, a spring washer 7, a sealing cover 8, a nut 9, a housing 10, and a shaft retaining ring 11.

[0044] As Figures 8-9As shown, during specific use, the transition plate is sleeved onto the wiring stud 4 through the through-hole above, and it is ensured that one side is tightly attached to the bottom section 4-1 and then welded and fixed. The coil lead wire is welded or crimped onto the protruding section of the transition plate. The wiring stud 4 fixes the first transition plate 3 and the second transition plate 3-1 and ensures that the card slot 1-3 on the middle section 4-2 is exposed from the other side of the insulating plate 2. Then, the shaft retaining ring 11 is installed into the card slot 4-3. At this time, under the double clamping of the transition plate and the shaft retaining ring 11, the transition plate, the insulating plate 2, the wiring stud 4, and the shaft retaining ring 11 are connected together.

[0045] Embed the above-connected components into the housing 10, and ensure that the insulating plate 2 is completely embedded in the square counterbore 10-5. Then, weld the housing 10 onto the magnetic track brake housing with a wire outlet hole to form a full-circumference sealed weld 14, and the wiring device is fixed on the magnetic track brake.

[0046] Crimp the wiring terminal 5 onto the power line 12, then sleeve it into the gland 1. Insert the power line 12 into the inner cavity of the housing 10 through the threaded hole on the side of the housing 10, and pass the wiring terminal 5 through the through-hole and sleeve it onto the wiring stud 4. Then, install the flat washer 6 and the elastic washer 7 successively above the wiring terminal 5, screw the nut 9 onto the threaded section 4-4 of the wiring stud 4, and then screw the gland 1 sleeved on the power line 12 into the side threaded hole. At this time, the wiring operation is completed.

[0047] After the power is turned on, the current can flow through the power line 12, the wiring stud 4, the transition plate, and the coil lead wire directly into the coil, realizing the function of conductive connection of the wiring device.

[0048] Screw the sealing cover 8 into the threaded hole of the housing 10 to complete the sealing of the wiring device.

[0049] During specific use, the end face of the middle section of the wiring stud is a plane, which can be closely attached to the wiring terminal, so that the wiring device conducts electricity through reliable surface contact rather than by threads. The position of the protruding plate on the transition plate can be flexibly set according to wiring requirements, either the same on both the left and right sides or different. Two through-holes are provided on the insulating plate, and a wiring post is installed on each through-hole. These two wiring studs can enable a device to connect the positive and negative pole wires simultaneously, having integrity.

[0050] In summary, by means of the above technical solutions of the present invention, the purpose of anti-torsion of the wiring device is achieved, the installation space is saved, the reliability of electrical connection is improved, and at the same time, the sealing and waterproof performance of the magnetic track brake are increased.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. An integrated anti-torsion wiring device for a magnetic rail brake, characterized in that: The invention comprises a shell (10), wherein the shell (10) is a rectangular parallelepiped, and the left and right ends of the shell (10) are each provided with a first threaded hole (10-3), one side of the shell (10) is provided with two symmetrical second threaded holes (10-1), and the other side of the shell (10) is set as an opening, and the inside of the shell (10) is provided with two unconnected cavities (10-6), and the cavities (10-6) are connected with the second threaded holes (10-1), and the shell (10) is provided with a square sink (10-5) near the opening, and an insulating plate (2) is installed on the square sink (10-5), and the insulating plate (2) is provided with two through holes (2-1) corresponding to the central axis of the second threaded hole (10-1), and the outer through hole (2-1) of the insulating plate (2) is provided with strip grooves around it, and a terminal stud (4) is installed on the through hole (2-1); A first sealing groove (10-4) is provided on the first threaded hole (10-3); a cable gland (1) is threadedly connected to the first threaded hole (10-3); a power cord (12) is fixedly installed on the cable gland (1); a terminal end of the power cord (12) extends into the cavity (10-6); a terminal end of the power cord (12) is fixedly connected to a wiring terminal (5); The second threaded hole (10-1) is provided with a second sealing groove (10-2), and the second threaded hole (10-1) is threadedly connected with a sealing cover (8); the terminal stud (4) is made of a conductive metal material, and is divided into three parts: a bottom section (4-1), a middle section (4-2) and a threaded section (4-4); the end face of the bottom section (4-1) is parallel to the end face of the insulating plate (2); the middle section (4-2) passes through the through hole (2-1); the middle section (4-2) is provided with a circular groove (4-3); a shaft elastic retaining ring (11) is installed on the groove (4-3); a terminal (5), a flat washer (6), an elastic washer (7) and a nut (9) are installed on the threaded section (4-4) in sequence; the diameter of the bottom section (4-1) is larger than the diameter of the middle section (4-2); and the diameter of the middle section (4-2) is larger than the diameter of the threaded section (4-4).

2. An integrated anti-torsion wiring device for a magnetic rail brake according to claim 1, characterized in that: The insulating plate (2) is an insulating material of polytetrafluoroethylene or polyimide. The two through holes (2-1) on the insulating plate (2) are respectively provided with a first strip groove (2-2) and a second strip groove (2-3). An upper concave platform is provided upwardly in the middle of the first strip groove (2-2). A first transition plate (3) is mounted on the first strip groove (2-2). A lower concave platform is provided downwardly on the left side of the second strip groove (2-3). A second transition plate (3-1) is mounted on the second strip groove (2-3). The first transition plate (3) and the second transition plate (3-1) are both screw-fixed via terminal studs (4).

3. The integrated anti-torsion wiring device for a magnetic rail brake according to claim 2, characterized in that: A first extending plate bent 90 degrees and connected to a first coil lead wire is provided above the first transition plate (3), and a second extending plate bent 90 degrees and connected to a second coil lead wire is provided below the second transition plate (3-1).

4. An integrated anti-torsion wiring device for a magnetic rail brake according to claim 1 or 2, characterized in that: A magnetic rail brake housing (13) is welded to the outside of the insulating plate (2), and a fully sealed weld (14) is provided between the insulating plate (2) and the magnetic rail brake housing (13).

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