A segmental insulator coupling to a catenary

Abstract

The application relates to the field of rail transit power supply and discloses a coupling device of sectional insulators and a contact net, which comprises an insulator, outer shells are arranged at the two ends of the insulator, adjusting bolts are threadedly connected in the outer shells, short guide rails are fixedly connected to one end of the outer shells, long guide rails are fixedly connected to the other end of the adjusting bolts, arc extinguishing rods are fixedly connected to the outer sides of the short guide rails and the long guide rails, plastic auxiliary guide rails are threadedly connected to the outer sides of the insulators, a hanging groove is arranged in the inner side of a U-shaped block, an anchor shaft is rotatably connected in the inner side of the hanging groove, a large clamping plate is rotatably connected to the outer side of the anchor shaft, a small clamping plate II is arranged between contact net conductors, and clamping assemblies are arranged at the two ends of the outer shells. The anchor shaft is hung into the hanging groove of the U-shaped block to realize quick anchoring, the adjusting bolts are used for adjusting the positions of the long guide rails, the short guide rails and the long guide rails are leveled with the lower surfaces of the contact net conductors, the plastic auxiliary guide rails are used for assisting in isolation and support, and the whole device realizes electrical isolation.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit power supply, in particular to a coupler of sectional insulator and catenary. BACKGROUND

[0002] In the field of rail transit power supply, the catenary is the core carrier for electric locomotives to obtain electric energy, and its stable operation directly determines the transportation efficiency and safety level of the rail transit system. As a key component of the catenary, the sectional insulator mainly functions to realize sectional electrical isolation and power supply control of the catenary, and is usually applied to scenes such as both ends of a station, interval separation, and electric locomotive preparation yard, etc. The coupler of sectional insulator and catenary is a core component for ensuring efficient connection of the two and stable transmission and safe isolation of electric current, and its performance needs to match the running parameters and maintenance requirements of the catenary in different scenes.

[0003] In the prior art, the anchor joint type connection is a common scheme in the connection mode of sectional insulator and catenary. The sectional insulator is arranged at the anchor joint of the catenary, and the contact line overlapping structure and transition characteristics possessed by the anchor joint are used to realize the conversion and transition of electric current between different sections, thereby completing the connection and power transmission task of the sectional insulator and the catenary, and being suitable for low-speed train line scenes with low speed requirements.

[0004] However, the present inventors found at least the following technical problems in the process of implementing the technical solution of the present application: the anchor joint type connection mode can cause poor dynamic contact performance between the pantograph and the catenary during train operation, and the pantograph can easily produce impact and jumping phenomenon when passing through the connection part, thereby causing off-line and arcing problems. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a coupler of sectional insulator and catenary, which solves the problem that the anchor joint type connection mode in the prior art can cause poor dynamic contact performance between the pantograph and the catenary during train operation, and the pantograph can easily produce impact and jumping phenomenon when passing through the connection part, thereby causing off-line and arcing problems.

[0006] In order to achieve the above object, the application is implemented by the following technical scheme: a coupling device of sectional insulator and catenary, comprising an insulator, both ends of the insulator are provided with a shell, the inside of the shell is threadedly connected with an adjusting bolt, one end of the shell is fixedly connected with a short guide rail, the other end of the adjusting bolt is fixedly connected with a long guide rail, the outside of the short guide rail and the long guide rail are fixedly connected with arc extinguishers, the outside of the insulator is threadedly connected with a plastic auxiliary guide rail, the inside of the shell is anchored with a U-shaped block, the inside of the U-shaped block is provided with a hanging groove, the inside of the hanging groove is rotatably connected with an anchor shaft, the outside of the anchor shaft is rotatably connected with a large clamping plate, the inside of the large clamping plate is fixedly connected with a catenary conductor, the catenary conductor is provided with a small clamping plate two, both ends of the shell are provided with clamping assemblies.

[0007] Preferably, the clamping assembly comprises a small clamping plate one, the outside of the small clamping plate one is mounted between the catenary conductors, the inside of the small clamping plate one is threadedly connected with a bolt body, one end of the bolt body is threadedly connected with a nut.

[0008] Preferably, the short guide rail and the long guide rail are made of copper-tin alloy material, which is the same as the material of the catenary conductor, so as to ensure that the guide rail and the catenary conductor have the same wear amount during operation, and avoid the generation of hard points due to different wear amounts.

[0009] Preferably, the inside of the small clamping plate two is provided with a dense tooth, the hardness of the dense tooth is greater than the hardness of the catenary conductor, under the pressure of the bolt body, a pressure mark is generated on the catenary conductor, achieving the anti-skid effect.

[0010] Preferably, the anchor shaft on the large clamping plate is anchored with the U-shaped block through the hanging groove, for resisting the tension of the catenary, and directly hanging into the hanging groove of the sectional insulator during installation or replacement, achieving the convenient and fast connection effect.

[0011] Preferably, the cross-section lower end of the short guide rail and the long guide rail is in the shape of a circular arc, which is similar to the shape of the catenary conductor.

[0012] Preferably, the adjusting bolt is used for adjusting the position of the long guide rail, so that the lower surfaces of the short guide rail, the long guide rail and the catenary conductor are on the same horizontal plane, and are fixed by a stop bolt.

[0013] Preferably, the large clamping plate and the small clamping plate two are combined to achieve clamping, ensuring the hard point-free connection of the sectional insulator and the catenary, so that the pantograph can smoothly pass through.

[0014] Preferably, the plastic auxiliary guide rail is arranged on the outside of the insulator, which assists electrical isolation and mechanical support, the arc extinguisher is used for eliminating arc, enhancing the electrical isolation performance, and preventing the expansion of fault current.

[0015] Preferably, the coupler is suitable for sectional control of electrified railway catenary, and is arranged at both ends of a station, at interval positions, or at a power locomotive preparation yard, so as to achieve flexible power supply and electrical isolation.

[0016] The application provides a coupler of a sectional insulator and a catenary.

[0017] 1. The anchor shaft is hung into the U-shaped block hanging groove to realize quick anchoring, resist the tension of the catenary, and be convenient to disassemble and assemble; the adjusting bolt adjusts the position of the long guide rail, so that the short guide rail, the long guide rail and the lower surface of the catenary conductor are flush, the hard point is eliminated by the clamping structure of the large clamping plate and the small clamping plate two, the arc rod eliminates the electric arc, the plastic auxiliary guide rail assists in isolation and support, and stable connection, smooth transition and flexible electrical isolation are realized.

[0018] 2. The short guide rail and the long guide rail are made of the same copper-tin alloy material as the catenary conductor, so that the wear amounts of the three are consistent during operation, and the hard point caused by wear difference is avoided. Meanwhile, the lower end of the guide rail section is arc-shaped and similar to the shape of the catenary conductor, swing caused by wind is reduced, contact stability of the pantograph is improved, and the service life of the component is prolonged.

[0019] 3. The small clamping plate two is internally provided with dense teeth with higher hardness than the catenary conductor, under the pressing force of the bolt body, the dense teeth will form indentations on the surface of the catenary conductor, effectively preventing the connection part from loosening and slipping. The stable clamping structure formed by the large clamping plate ensures the fixation of the catenary conductor, avoids impact generated when the pantograph slides, and improves operation safety.

[0020] 4. The structure that the anchor shaft is anchored through the hanging groove and the U-shaped block not only can effectively resist the tension of the catenary and disperse local stress, but also simplifies the installation and replacement process, so that the connection can be quickly completed without complex adjustment, and construction difficulty and time cost are reduced. DETAILED DESCRIPTION

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

[0022] Figure 2 It is a partial structure schematic diagram of the shell of the application;

[0023] Figure 3 It is a partial structure schematic diagram of the U-shaped block of the application;

[0024] Figure 4 It is a partial structure schematic diagram of the anchor shaft of the application;

[0025] Figure 5 It is a partial structure schematic diagram of the hanging groove of the application;

[0026] Figure 6The schematic view of the partial structure of the clamping assembly of the present application.

[0027] Wherein, 1, insulator; 2, shell; 3, adjusting bolt; 4, short guide rail; 5, long guide rail; 6, arc extinguishing rod; 7, plastic auxiliary guide rail; 8, clamping assembly; 81, small clamping plate one; 82, bolt body; 83, nut; 9, U-shaped block; 10, large clamping plate; 11, anchor shaft; 12, small clamping plate two; 13, conductor of overhead contact system; 14, hanging groove. DETAILED DESCRIPTION

[0028] The technical solutions of the present application will be described clearly and completely below in combination with the drawings of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present application.

[0029] Please refer to the drawings of the present application Figure 1 - the drawings of the present application Figure 3 The embodiment of the present application provides a coupling device of sectional insulator and overhead contact system, which comprises an insulator 1, both ends of the insulator 1 are provided with a shell 2, the inside of the shell 2 is threadedly connected with an adjusting bolt 3, one end of the shell 2 is fixedly connected with a short guide rail 4, the other end of the adjusting bolt 3 is fixedly connected with a long guide rail 5, the outside of the short guide rail 4 and the long guide rail 5 are fixedly connected with an arc extinguishing rod 6, the outside of the insulator 1 is threadedly connected with a plastic auxiliary guide rail 7, the inside of the shell 2 is anchored with a U-shaped block 9, the inside of the U-shaped block 9 is provided with a hanging groove 14, the inside of the hanging groove 14 is rotatably connected with an anchor shaft 11, the outside of the anchor shaft 11 is rotatably connected with a large clamping plate 10, the inside of the large clamping plate 10 is fixedly connected with a conductor of overhead contact system 13, the conductor of overhead contact system 13 is provided with a small clamping plate two 12, both ends of the shell 2 are provided with a clamping assembly 8.

[0030] Specifically, the insulator 1 is used for effectively separating the current of different power supply sections, realizing electrical isolation, preventing fault current diffusion, and at the same time providing a stable installation foundation for the shells 2 at both ends, the shell 2 is used for integrating the adjusting bolt 3, the short guide rail 4 and the U-shaped block 9, so that the components are more compact, the adjusting bolt 3 is used for adjusting the position of the long guide rail 5, the short guide rail 4 and the long guide rail 5 are kept on the same horizontal plane with the lower surface of the conductor of overhead contact system 13 through fine adjustment, and then fixed by a stop bolt to avoid hard points caused by height difference, the long guide rail 5, the short guide rail 4 and the shell are fixed before leaving the factory, when installed on site, the anchor shaft 11 is hung into the hanging groove 14, the adjusting bolt 3 is twisted, the position of the lower surface of the conductor of overhead contact system 13 is adjusted, and the lower surface of the clamping end of the long guide rail 5 and the short guide rail 4 is kept on the same plane.

[0031] The short rail 4 is made of the same copper-tin alloy material as the conductor 13 of the overhead line system, so that the wear of the two is consistent in long-term operation, and the hard point is further prevented. The lower end of the cross section of the short rail 4 is arc-shaped, similar to the conductor 13 of the overhead line system, so that the swing caused by wind is reduced, the contact between the pantograph and the rail is stable, and the arc rod 6 outside the short rail 4 can also assist in eliminating the arc. The long rail 5 cooperates with the short rail 4 to form a complete transition rail structure, undertakes the transition work of current transmission, and provides continuous and stable contact support for the pantograph. The arc rod 6 is used to eliminate the arc generated during operation, enhance the electrical isolation effect, prevent the fault current from expanding, and protect the overhead line system components from being damaged by the arc. The plastic auxiliary rail 7 is used to separate the current of different sections and enhance the carrying capacity of the insulator 1. The hanging groove 14 is used to limit the displacement of the anchor shaft 11, and the anchor shaft 11 can be directly hung in during installation or replacement, simplifying the construction process and improving the work efficiency. The anchor shaft 11 connects the hanging groove 14 and the large clamp plate 10 to realize the flexible connection of the two, disperse the tension and avoid local stress concentration. The large clamp plate 10 and the small clamp plate two 12 are used to fix the conductor 13 of the overhead line system to ensure stable current transmission.

[0032] Please refer to the accompanying drawings Figure 4 and the accompanying drawings Figure 5 The short rail 4 and the long rail 5 are made of copper-tin alloy material, which is the same as the material of the conductor 13 of the overhead line system, so as to ensure that the wear of the rail and the conductor 13 of the overhead line system is the same during operation, and the hard point is avoided due to different wear amounts. The inner side of the small clamp plate two 12 is provided with dense teeth, and the hardness of the dense teeth is greater than that of the conductor 13 of the overhead line system. Under the pressure of the bolt body 82, a pressure mark is formed on the conductor 13 of the overhead line system, achieving the anti-skid effect.

[0033] Specifically, the short rail 4 and the long rail 5 are made of copper-tin alloy consistent with the conductor 13 of the overhead line system, so that the wear speed of the three is synchronized in long-term operation. The conductor 13 of the overhead line system is used for current transmission, the short rail 4 and the long rail 5 are used for transition support of the pantograph, and the wear amount of the three is the same, so that the hard point is avoided due to the faster wear of a certain component. The lower end of the cross section of the short rail 4 and the long rail 5 is similar to the conductor 13 of the overhead line system, which is arc-shaped, so as to reduce the swing amplitude of the rail under the action of wind, so that the pantograph is always stably attached to the rail and the conductor 13 of the overhead line system, and the offline situation is reduced.

[0034] When the bolt body 82 is tightened according to the specified torque, the dense teeth will press clear pressure marks on the surface of the conductor 13 of the overhead line system, solving the problem of easy loosening of the traditional connection. The small clamp plate two 12 and the large clamp plate 10 form a clamping structure, which can smoothly connect the conductor 13 of the overhead line system with the short rail 4 and the long rail 5, so that there is no impact when the pantograph slides.

[0035] Please refer to the accompanying drawings Figure 4 and the accompanying drawings Figure 5The anchor shaft 11 on the large clamp plate 10 is anchored with the U-shaped block 9 through the hanging groove 14, used for resisting the tension of the overhead line system, and directly hung into the hanging groove 14 of the sectional insulator during installation or replacement, achieving convenient and fast connection effect; the cross section of the lower end of the short guide rail 4 and the long guide rail 5 is in arc shape, similar to the shape of the overhead line system conductor 13.

[0036] Specifically, after the anchor shaft 11 on the large clamp plate 10 is hung into the hanging groove 14, the entire anchor structure can directly resist the tension of the overhead line system, and the anchor shaft 11 of the large clamp plate 10 hung into the hanging groove 14 does not need to be repeatedly adjusted in position, so that the preliminary connection can be quickly completed, and subsequent fixation is only needed to cooperate with the clamping structure, thereby shortening the on-site construction time and reducing the dependence on the professional skills of the construction personnel.

[0037] Please refer to the accompanying drawings Figure 3 - the accompanying drawings Figure 5 The adjusting bolt 3 is used for adjusting the position of the long guide rail 5, so that the lower surfaces of the short guide rail 4, the long guide rail 5 and the overhead line system conductor 13 are on the same horizontal plane, and are fixed through the stop bolt; the large clamp plate 10 and the small clamp plate two 12 are combined to achieve clamping, ensuring the hard-point-free connection of the sectional insulator and the overhead line system, so that the pantograph can smoothly pass through.

[0038] Specifically, the adjusting bolt 3 is used to control the displacement of the long guide rail 5, and after the position is adjusted, the stop bolt is used for fixation. The overhead line system continuously bears tension during operation, and vibration is also brought by the train passing through. The stop bolt is used to limit the loosening or displacement of the adjusting bolt 3.

[0039] Please refer to the accompanying drawings Figure 3 and the accompanying drawings Figure 6 The plastic auxiliary guide rail 7 is arranged outside the insulator 1, assisting electrical isolation and mechanical support, the arc extinguishing rod 6 is used for eliminating arc, enhancing electrical isolation performance, and preventing fault current expansion; the coupling is suitable for sectional control of the overhead line system of the electrified railway, arranged at both ends of the station, interval separation or electric locomotive preparation yard, achieving flexible power supply and electrical isolation; the clamping assembly 8 includes a small clamp plate one 81, the small clamp plate one 81 is externally mounted between the overhead line system conductors 13, the small clamp plate one 81 is internally threadedly connected with a bolt body 82, and one end of the bolt body 82 is threadedly connected with a nut 83.

[0040] Specifically, during train operation, the pantograph slides between the short guide rail 4, the long guide rail 5, and the contact wire conductor 13 to collect current. Arcing may occur at the connection points due to instantaneous current changes. These arcs oxidize the surfaces of the guide rails and contact wire conductor 13, accelerating component wear and shortening the service life of the short guide rail 4, long guide rail 5, and contact wire conductor 13. The arc-extinguishing rod 6 is used to eliminate arcing at the connection points, protecting the surfaces of the guide rails and conductors from oxidation and wear. The bolt body 82 and nut 83 are used to secure the contact wire conductor 13. When the contact wire in a station section requires maintenance, simply disconnecting the connectors at both ends of the station isolates the power supply to the station section, allowing trains within the section to continue operating normally without causing a complete line shutdown due to station maintenance, thus achieving flexible power supply.

[0041] Working principle: First, during the installation process, the anchor shaft 11 on the large clamp plate 10 is directly hung into the hanging groove 14 of the U-shaped block 9. The anchoring is used to resist the tension of the contact network, ensuring structural stability and facilitating replacement, thus avoiding the complex adjustments of traditional connection methods.

[0042] When clamping and adjustment are required, the contact wire conductor 13 is placed between the large clamping plate 10 and the small clamping plate 12, and clamped and fixed using the small clamping plate 81, bolt body 82 and nut 83 in the clamping assembly 8. The fine teeth on the inner side of the small clamping plate create indentations on the contact wire conductor 13 under the action of clamping force to achieve an anti-slip effect. At the same time, the position of the long guide rail 5 is adjusted by adjusting the bolt 3 so that the short guide rail 4, the long guide rail 5 and the lower surface of the contact wire conductor 13 are on the same horizontal plane, and fixed with the anti-reverse bolt to eliminate hard points and ensure a smooth transition with no hard points or very small hard points.

[0043] Finally, during operation, the short guide rail 4 and the long guide rail 5 are made of the same copper-tin alloy material as the contact wire conductor 13 to avoid hard spots caused by wear differences during long-term operation. The arc structure at the lower end of the guide rail is similar in shape to the contact wire conductor 13, which reduces the sway amplitude under the influence of wind and improves the contact stability of the pantograph. The plastic auxiliary guide rail 7 assists in electrical isolation and mechanical support, and the arc-extinguishing rod 6 eliminates the electric arc and prevents the fault current from expanding, thereby realizing electrical segmented control, flexible power supply and safe isolation.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A connector for a segmented insulator and a contact network, comprising an insulator (1), characterized in that, Both ends of the insulator (1) are equipped with a housing (2). An adjusting bolt (3) is threaded inside the housing (2). A short guide rail (4) is fixedly connected to one end of the housing (2). A long guide rail (5) is fixedly connected to the other end of the adjusting bolt (3). An arc-extinguishing rod (6) is fixedly connected to the outside of both the short guide rail (4) and the long guide rail (5). A plastic auxiliary guide rail (7) is threaded to the outside of the insulator (1). A U-shaped block (9) is anchored inside the housing (2). A hanging groove (14) is opened inside the U-shaped block (9). An anchor shaft (11) is rotatably connected inside the hanging groove (14). A large clamping plate (10) is rotatably connected to the outside of the anchor shaft (11). A contact wire conductor (13) is fixedly connected inside the large clamping plate (10). A small clamping plate (12) is set between the contact wire conductors (13). Both ends of the housing (2) are equipped with clamping components (8). The clamping assembly (8) includes a small clamping plate (81), the outside of which is installed between the contact wire conductors (13), and the inside of the small clamping plate (81) is threaded with a bolt body (82), and one end of the bolt body (82) is threaded with a nut (83). The inner side of the small clamp plate (12) is provided with dense teeth. The hardness of the dense teeth is greater than that of the contact wire conductor (13). Under the clamping force of the bolt body (82), indentations are generated on the contact wire conductor (13) to achieve the anti-slip effect. The anchor shaft (11) on the large clamp plate (10) is anchored to the U-shaped block (9) through the hanging groove (14) to resist the tension of the contact wire, and can be directly hung into the hanging groove (14) of the segment insulator during installation or replacement to achieve a convenient and quick connection effect; The lower ends of the cross sections of the short guide rail (4) and the long guide rail (5) are arc-shaped, similar to the shape of the contact wire conductor (13); The adjusting bolt (3) is used to adjust the position of the long guide rail (5) so that the lower surfaces of the short guide rail (4), the long guide rail (5) and the contact wire conductor (13) are on the same horizontal plane and are fixed by the anti-reverse bolt.

2. The connector between a segmented insulator and a contact wire according to claim 1, characterized in that, Both the short guide rail (4) and the long guide rail (5) are made of copper-tin alloy material, which is the same as the material of the contact wire conductor (13) to ensure that the guide rail and the contact wire conductor have the same amount of wear during operation, and to avoid hard spots due to different wear amounts.

3. The connector between a segmented insulator and a contact network according to claim 1, characterized in that, The large clamp (10) and the small clamp (12) are combined to achieve clamping, ensuring that the segmented insulator is connected to the contact network without any hard points, so that the pantograph can pass smoothly.

4. The connector between a segmented insulator and a contact wire according to claim 1, characterized in that, The plastic auxiliary guide rail (7) is set outside the insulator (1) to assist in electrical isolation and mechanical support. The arc-extinguishing rod (6) is used to eliminate electric arcs, enhance electrical isolation performance, and prevent the fault current from expanding.

5. The connector between a segmented insulator and a contact wire according to claim 1, characterized in that, The connector is suitable for segmented control of the overhead contact system of electrified railways and is installed at both ends of the station, at the section separation, or at the electric locomotive maintenance yard to achieve flexible power supply and electrical isolation.

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