Elastic insulating suspension assembly

Abstract

This application relates to a flexible insulated suspension assembly, comprising: a flexible insulator and a pair-mounted clamp; the flexible insulator includes an insulating core rod, an elastomer shell, and a rubber elastomer filled between the two, the rubber elastomer having an elastomer gap; the elastomer shell includes a positioning groove at the bottom and a connecting boss, the pair-mounted clamp is connected to the connecting boss and can rotate relative to it around the positioning groove. This utility model, while meeting various technical specifications of the flexible insulated suspension assembly, allows for rapid installation and convenient later maintenance and replacement, and also releases the thermal expansion and contraction of the rigid busbar and the inertial force exerted on the rigid busbar by the pantograph, thus better protecting the rigid busbar, extending its service life, and ensuring the safe and stable operation of subway trains.

Description

Technical Field

[0001] This application relates to the field of overhead contact system technology for electrified railways and urban rail transit, and more specifically, to a flexible insulated suspension assembly. Background Technology

[0002] At present, my country's subways and a small number of high-speed railways use rigid busbar power supply, which is installed and fixed to the tunnel wall by positioning clamps, bases and other components.

[0003] Currently, rigid busbar suspension systems mostly use flexible insulated suspension assemblies. The rigid busbar is inserted into the flexible insulated suspension assembly before installation, and the connecting bolts on the flexible insulated suspension assembly are then fixed to the channel steel base. Because the rigid busbar needs to be inserted into the flexible insulated suspension assembly, and rigid busbars are typically 12m long, installation is difficult. Furthermore, later maintenance and replacement require the entire rigid busbar to be disassembled before replacement, making installation cumbersome and inconvenient for on-site maintenance.

[0004] Currently, rigid busbars are installed and fixed using porcelain insulators and busbar positioning clamps. During subway train operation, due to the thermal expansion and contraction of the busbar and the inertia of the pantograph of the passenger car always exerting force in one direction, the connection between the elastic insulating suspension assembly and the rigid busbar uses conductive pads. These conductive pads are mostly made of rubber or modified rubber and plastic, and the contact between the conductive pads and the rigid contact wire is surface contact. This cannot effectively release the thermal expansion and contraction of the rigid busbar and the inertial force exerted on the rigid busbar by the train during operation. As a result, the rigid busbar and the positioning clamp may get stuck at sharp bends or changes in gradient. This sticking is difficult to detect during routine inspections and is often only discovered after serious consequences such as damage to the busbar, distortion and deformation of the insulator, or damage and cracking of the base have occurred. This affects the normal operation of the subway line and poses certain safety hazards. Utility Model Content

[0005] The purpose of this application is to provide an elastic insulated suspension assembly that, while meeting various technical specifications, can be quickly installed and facilitates later maintenance and replacement. It can also release the thermal expansion and contraction of the rigid busbar and the inertial force exerted on the rigid busbar by the pantograph, thereby better protecting the rigid busbar, extending its service life, and ensuring the safe and stable operation of subway trains.

[0006] To achieve the above objectives, this utility model provides an elastic insulating suspension assembly, comprising: an elastic insulator and a pair-mounted wire clamp;

[0007] The elastic insulator includes an insulating core rod, an elastic shell, and a rubber elastomer filled between the two, wherein the rubber elastomer is provided with elastomer voids;

[0008] The elastomer housing includes a positioning groove and a connecting boss at the bottom. The mounting clamp is connected to the connecting boss and can rotate relative to the positioning groove.

[0009] In an optional embodiment, the elastomer voids include a plurality of voids, which are disposed in the circumferential direction of the rubber elastomer.

[0010] In an optional embodiment, the elastomer housing includes a housing body, the positioning groove is disposed between the housing body and the connecting boss, and the top of the mounting clamp is assembled and spliced ​​in the annular groove of the positioning groove.

[0011] In an optional embodiment, the connecting boss includes a fixed elongated cylindrical platform, and the two sides of the fixed elongated cylindrical platform are provided with parallel flat cut surfaces.

[0012] In an optional embodiment, the elastomer shell is fitted with a silicone rubber insulator, and the silicone rubber insulator is provided with an orientation mark, which is provided corresponding to the narrow side of the fixed elongated truncated cone.

[0013] In an optional embodiment, the mounting clamp includes two separately arranged rotationally symmetrical parts, which are fixedly mounted on the connecting boss and have a mating groove on the top of the rotationally symmetrical parts.

[0014] In an optional embodiment, the two rotationally symmetrical members are connected and fixed by a bolt assembly, wherein one side of the rotationally symmetrical member is provided with a positioning protrusion and the other side is provided with a positioning groove, and the positioning protrusion and the positioning groove are provided correspondingly.

[0015] Alternatively, one side of the two rotationally symmetric components may be hinged together, and the other side may be fixed together by a bolt assembly.

[0016] In an optional embodiment, each of the rotationally symmetrical components is provided with a plurality of sliding bearings, the sliding bearings including at least two load bearings, the load bearings being vertically mounted below the busbar.

[0017] In an optional embodiment, the rotationally symmetrical member is provided with mounting grooves for accommodating the busbar, and the sliding bearing further includes a horizontally mounted lateral auxiliary bearing disposed in the middle of the mounting groove, and a vertically mounted top auxiliary bearing disposed above the mounting groove.

[0018] In an optional embodiment, the mounting groove is oriented in the same direction as the extension direction of the busbar, and the mounting groove includes gradually expanding fan-shaped grooves located on both sides of the lateral auxiliary bearing.

[0019] The elastic insulated suspension assembly of this utility model, by setting the busbar clamp part of the elastic insulated suspension assembly as a separate structure, greatly facilitates on-site installation and construction as well as operation and maintenance after the line is put into operation.

[0020] By optimizing the busbar clamp section into an anti-jamming busbar clamp structure, the thermal expansion and contraction of the rigid busbar itself and the inertial force exerted on the rigid busbar by the pantograph over a long period of time can be effectively released. This avoids the stress deformation that is prone to occur in the rigid busbar under long-term stress, avoids the risk of insulator distortion and deformation of the elastic insulation component and damage to the base, and ensures the safe operation of the train.

[0021] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the internal structure of the elastic insulator in this application;

[0024] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0025] Figure 3 This is a schematic diagram showing the distribution structure of the elastic body voids and connecting bosses;

[0026] Figure 4 This is a schematic diagram of the external structure of the elastic insulator in this application;

[0027] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure;

[0028] Figure 6 This is a schematic side view of the overall structure of the elastic insulated suspension assembly in this application;

[0029] Figure 7 This is a schematic diagram of the structure of a rotationally symmetric component;

[0030] Figure 8 for Figure 7 A top-view structural diagram;

[0031] Figure 9 This is a schematic diagram of the mounting structure of a sliding bearing on a rotationally symmetrical component.

[0032] icon:

[0033] 1-Elastic insulator; 11-Insulating core rod; 12-Elastomer shell; 121-Shell body; 13-Rubber elastomer; 14-Elastomer void; 15-Silicone rubber insulator; 16-Umbrella skirt; 17-Orientation indicator;

[0034] 2-Wire clamp; 21-Rotationally symmetrical component; 22-Matching groove; 23-Positioning protrusion; 24-Positioning groove; 25-Mounting slot; 26-Sector-shaped groove surface;

[0035] 3-Positioning groove;

[0036] 4-Connecting boss; 41-Flat cut surface;

[0037] 5-Sliding bearing; 51-Carrier bearing; 52-Side auxiliary bearing; 53-Top auxiliary bearing. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0041] See Figure 1 and combined Figures 2-9 The main structure of the elastic insulating suspension assembly in this utility model includes an elastic insulator 1 and a pair of wire clamps 2.

[0042] The elastic insulator 1 includes an insulating core rod 11, an elastic shell 12, and a rubber elastomer 13 filled between the insulating core rod 11 and the elastic shell 12. The rubber elastomer 13 is provided with an elastomer gap 14.

[0043] Combination Figure 2 The space between the insulating core rod 11 and the elastomer shell 12 is filled by a rubber elastomer 13. The rubber elastomer 13 is provided with four elastomer gaps 14. Preferably, the four elastomer gaps 14 are provided in the circumferential direction of the rubber elastomer 13, so that the elastic insulator 1 has better elasticity in the direction of rigid busbar, and it is convenient to adjust the elastic index of the rubber elastomer 13 by adjusting the four elastomer gaps 14 in the elastomer during production.

[0044] Based on the uneven force distribution of the elastic insulator in the front-back and left-right directions, the elastic body gaps 14 are arranged non-uniformly in the circumferential direction of the rubber elastomer 13. Alternatively, they can be set to be evenly distributed in the circumferential direction of the rubber elastomer 13 according to the actual working conditions.

[0045] The elastomer housing 12 includes a positioning groove 3 at the bottom and a connecting boss 4. The mounting clamp 2 is clamped to the connecting boss 4 and can rotate relative to the positioning groove 3.

[0046] Specifically, the coupling clamp 2 in this application is in the form of an anti-jamming clamp, and the connecting boss 4 serves as the connection structure between the elastic insulator 1 and the anti-jamming clamp. It is located at the bottom of the elastic body shell 12, and the connecting boss 4 specifically plays the role of connection and positioning.

[0047] The two sides of the connecting boss 4 are cut flat, which facilitates the positioning during the product manufacturing process, especially the positioning of the internal elastic body gap 14 of the rubber elastomer 13 during installation, and also facilitates the installation and fixing of the elastic insulator 1.

[0048] Meanwhile, the clamp 2 is connected to the connecting boss 4 and can rotate relative to the center of the positioning groove 3. When the arc-shaped turning section of the busbar deforms due to thermal expansion and contraction, the deformation of the busbar causes the anti-jamming clamp to rotate, releasing stress and preventing jamming between the busbar and the clamp 2.

[0049] In one specific embodiment, the elastomer shell 12 includes a shell body 121, a positioning groove 3 is disposed between the shell body 121 and the connecting boss 4, and the top of the mounting clamp 2 is assembled and spliced ​​in the annular groove of the positioning groove 3.

[0050] Specifically, the wire clamp 2 is a split structure. It clamps the rigid busbar through a clamping connection and simultaneously clamps the connecting boss 4. This installation method avoids the installation method of the busbar being connected through the elastic insulation suspension assembly. At the same time, it can make the top of the wire clamp 2 form a relative snap-fit ​​relationship in the positioning groove 3, so that the connecting boss 4 is located on the inner cavity of the wire clamp 2, and the entire wire clamp 2 can rotate relative to each other in the annular groove around the center of the positioning groove 3.

[0051] In this embodiment, the connecting boss 4 is specifically a fixed elongated truncated cone structure, with parallel flat cut surfaces 41 on both sides of the fixed elongated truncated cone. The flat cut surfaces on both sides of the elongated truncated cone facilitate the positioning of the elastic body gap 14 inside the rubber elastomer 13 of the upper elastic insulator 1 during the production process, and also facilitate the fixing of the elastic insulator 1 during installation.

[0052] The elastic insulator 1 is specifically connected to the installation base structure by the connecting bolt and the locking nut located at the top. During the installation process, the flat cut surfaces 41 on both sides of the connecting boss 4 can be clamped by a wrench, and then the locking nut can be rotated and tightened by another wrench to install and fix the elastic insulator 1.

[0053] In existing traditional elastic insulating suspension assemblies, the porcelain insulator and the positioning clamp are rigidly connected by bolts, which cannot release stress. In this utility model, by setting the positioning groove 3 and fixing the elongated truncated cone, the number of bolts connecting the elastic insulator 1 and the mounting clamp 2 is reduced compared with the prior art, which makes it more convenient to connect and install the rigid busbar and the elastic insulating suspension assembly.

[0054] From a functional structural perspective, the elastomer shell 12 is fitted with a silicone rubber insulator 15. The silicone rubber insulator 15 has an orientation mark 17, which corresponds to the narrow side of the fixed elongated truncated cone. The silicone rubber insulator 15 includes multiple sheds 16, and the orientation mark 17 is positioned in the gaps between the sheds 16.

[0055] This configuration ensures that the orientation of the marking 17 aligns with the direction of the rigid busbar during installation, thereby guaranteeing better flexibility of the flexible insulating suspension assembly in the direction of the rigid busbar.

[0056] From the perspective of further facilitating the installation of rigid busbar clamps, the clamp 2 includes two separately arranged rotationally symmetrical components 21. The rotationally symmetrical components 21 are fixedly mounted on a fixed elongated cylindrical platform and can rotate relative to each other around the positioning groove 3. The top of the rotationally symmetrical component 21 is provided with a mating groove 22, which is positioned opposite to the positioning groove 3. This ensures that after the two rotationally symmetrical components 21 are assembled, the mating groove 22 is aligned with the annular groove of the positioning groove 3, thereby ensuring relative rotation.

[0057] Based on the connection form of the mounting clamp 2, this utility model includes different connection forms. In one connection form, two rotationally symmetrical parts 21 are connected and fixed by a bolt assembly. One rotationally symmetrical part 21 is provided with a positioning protrusion 23 and the other side is provided with a positioning groove 24. The positioning protrusion 23 and the positioning groove 24 are correspondingly provided. The two can be used as positioning devices when clamping and holding the clamp.

[0058] In another connection configuration, one side of the two rotationally symmetric members 21 is hinged together, and the other side is fixed together by a bolt assembly.

[0059] Regardless of the connection method, the two rotationally symmetrical parts 21 can be fixed on the fixed elongated cylindrical platform of the elastic insulator 1 after they are embraced, and are connected and fixed by bolt assembly. After the product is installed, it can rotate around the center of the positioning groove 3 of the elastic insulator 1. When the arc-shaped turning section of the busbar deforms due to thermal expansion and contraction, the deformation of the busbar drives the anti-jamming clamp to rotate, releasing stress and achieving the technical purpose of avoiding jamming between the busbar and the clamp.

[0060] In another specific embodiment, each rotationally symmetrical component 21 is provided with a plurality of sliding bearings 5, each sliding bearing 5 including at least two load bearings 51, which are installed below the busbar.

[0061] The rotationally symmetrical member 21 is provided with mounting grooves 25 for accommodating the busbar. The sliding bearing 5 also includes a horizontally mounted lateral auxiliary bearing 52 located in the middle of the mounting groove 25, and a vertically mounted top auxiliary bearing 53 located above the mounting groove 25.

[0062] Specifically, each rotationally symmetrical component 21 is provided with four sliding bearings 5, one arranged in the horizontal direction and three arranged in the vertical direction.

[0063] Two load bearings 51 are arranged on the lower side in the vertical direction as load bearing wheels. The load bearings 51 are vertically installed below the busbar and bear the weight of the rigid busbar and related products.

[0064] A top auxiliary bearing 53 is arranged vertically above the mounting groove 25 as a top auxiliary wheel.

[0065] A horizontally mounted lateral auxiliary bearing 52 is installed in the middle of the mounting groove 25 as a lateral auxiliary wheel to limit the upward movement of the busbar and to provide deflection force for the busbar in the extra-high section of the outer rail at the bend of the line, so that the busbar is always parallel to the specified plane. This changes the surface contact sliding friction between the rigid busbar and the conductive pad when displacement occurs due to thermal expansion and contraction to line contact rolling friction, reducing friction and allowing the rigid busbar to slide within the elastic insulating suspension assembly, releasing stress, extending service life, and ensuring the safe and stable operation of the line.

[0066] In practical applications, the thermal expansion and contraction deformation of the rigid busbar is mainly along the length of the busbar. The deformation stress of this straight section is released by the rolling of the sliding bearing 5. However, at bends and other non-straight sections of the busbar, there will be a certain arc-shaped turning section. The deformation of the arc-shaped turning section can be released by the relative rotation of the mounting clamp 2 around the center of the positioning groove 3, thus avoiding jamming between the busbar and the mounting clamp 2. This will be explained in detail below.

[0067] Preferably, the mounting groove 25 is positioned in the same direction as the extension direction of the busbar, so that the mounting groove 25 on the rotational symmetry member 21 is parallel to the extension direction of the busbar. The mounting groove 25 includes gradually expanding fan-shaped groove surfaces 26 located on both sides of the lateral auxiliary bearing 52.

[0068] This configuration allows the anti-jamming clamp to form a fan-shaped gap at the inlet and outlet positions of the busbar, ensuring that the clamp 2 has a certain degree of freedom in the vertical plane while preventing it from contacting the clamp body at extreme positions, thus avoiding jamming.

[0069] The elastic insulated suspension assembly of this utility model, while meeting various technical specifications, can be quickly installed, facilitate subsequent maintenance and replacement, and release the thermal expansion and contraction of the rigid busbar and the inertial force exerted on the rigid busbar by the pantograph. This can better protect the rigid busbar, extend its service life, and ensure the safe and stable operation of subway trains.

[0070] It should be noted that, in addition to setting the positioning groove 3 and connecting boss 4, the positioning groove 3 and elongated truncated cone of the elastic insulator 1 can also be changed to an internal threaded hole, and a threaded connector can be added, with the anti-jamming clamps clamped onto the threaded connector.

[0071] Making the anti-jamming clamp into two parts, one of which is fixedly connected to the elastic insulator 1, and the other is only connected to the anti-jamming clamp, can also achieve the technical effect of releasing the thermal expansion and contraction of the rigid busbar and the inertial force of the pantograph on the rigid busbar, which will not be elaborated here.

[0072] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0073] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A flexible insulating suspension assembly, characterized in that, include: Elastic insulators and pair-mounted wire clamps; The elastic insulator includes an insulating core rod, an elastic shell, and a rubber elastomer filled between the two, wherein the rubber elastomer is provided with elastomer voids; The elastomer housing includes a positioning groove and a connecting boss at the bottom. The mounting clamp is connected to the connecting boss and can rotate relative to the positioning groove.

2. The elastic insulating suspension assembly according to claim 1, characterized in that, The elastomer voids include multiple voids, which are arranged in the circumferential direction of the rubber elastomer.

3. The elastic insulating suspension assembly according to claim 1, characterized in that, The elastomer shell includes a shell body, the positioning groove is disposed between the shell body and the connecting boss, and the top of the mounting clamp is assembled and spliced ​​in the annular groove of the positioning groove.

4. The elastic insulating suspension assembly according to claim 1, characterized in that, The connecting boss includes a fixed elongated cylindrical platform, and the two sides of the fixed elongated cylindrical platform are provided with parallel flat cut surfaces.

5. The elastic insulating suspension assembly according to claim 4, characterized in that, The elastomer shell is fitted with a silicone rubber insulator, and the silicone rubber insulator is provided with an orientation mark, which is provided corresponding to the narrow side of the fixed elongated truncated cone.

6. The elastic insulating suspension assembly according to any one of claims 1-5, characterized in that, The mounting clamp includes two separately arranged rotationally symmetrical parts, which are fixedly mounted on the connecting boss, and a mating groove is provided on the top of the rotationally symmetrical parts.

7. The elastic insulating suspension assembly according to claim 6, characterized in that, The two rotationally symmetrical components are connected and fixed by a bolt assembly. One side of the rotationally symmetrical component is provided with a positioning protrusion, and the other side is provided with a positioning groove. The positioning protrusion and the positioning groove are provided in correspondence. Alternatively, one side of the two rotationally symmetric components may be hinged together, and the other side may be fixed together by a bolt assembly.

8. The elastic insulating suspension assembly according to claim 6, characterized in that, Each of the rotationally symmetrical components is provided with a plurality of sliding bearings, the sliding bearings including at least two load bearings, the load bearings being vertically mounted below the busbar.

9. The elastic insulating suspension assembly according to claim 8, characterized in that, The rotationally symmetrical component is provided with mounting grooves for accommodating the busbar. The sliding bearing also includes a horizontally mounted lateral auxiliary bearing disposed in the middle of the mounting groove, and a vertically mounted top auxiliary bearing disposed above the mounting groove.

10. The elastic insulating suspension assembly according to claim 9, characterized in that, The mounting groove is oriented in the same direction as the extension direction of the busbar, and the mounting groove includes gradually expanding fan-shaped grooves located on both sides of the lateral auxiliary bearing.

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