A ball head anchor connection structure and a sectional insulator

Abstract

The utility model discloses a ball head anchor connecting structure and sectional insulator, ball head anchor connecting structure is applied to sectional insulator, ball head anchor connecting structure includes wire clamp and end stand, the wire clamp is equipped with ball head anchor, the end stand is equipped with ball head anchor groove, ball head anchor rotatably connected in ball head anchor groove, to realize wire clamp with the relative rotation of end stand. The utility model discloses the rotatable connection cooperation of ball head anchor and ball head anchor groove, breaks through the freedom degree limit of traditional anchor shaft connection, realizes the multidirectional relative rotation between wire clamp and end stand, makes the guide rail plane conveniently adhere to the steel rail inclined plane, avoids the pantograph arc, and the train operation safety is greatly promoted, and the angle calibration process of installation is simplified simultaneously, and the construction difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrified railway catenary technology, and in particular to a ball-head anchor connection structure and a segmented insulator. Background Technology

[0002] Sectional insulators are key equipment in electrified railway catenary systems for achieving electrical segmentation. They can divide the catenary into multiple independent power supply sections without interrupting the mechanical connection, ensuring flexible power supply and electrical isolation. They are typically installed at both ends of stations, at section dividers, and other locations requiring segmented control, and are crucial to the safety and flexibility of railway operations.

[0003] Among the existing connection methods between segmented insulators and the overhead contact system, the anchor-joint connection is the most widely used. This method achieves connection by hooking the anchor shaft at the end of the large clamp plate into the anchor groove. However, this structure has significant drawbacks: the radial movement of the overhead contact wire is extremely limited, making it extremely difficult to adjust the parallelism between the metal guide plane of the segmented insulator and the railway rail plane. Especially at railway curves, where the outer rail is higher than the inner rail, forming an inclined plane, the degree of freedom of the gap between the anchor shaft and the anchor groove cannot meet the requirements for tilt adjustment, easily causing severe pantograph arcing and leading to safety accidents. This problem has not yet been effectively solved. In addition, the direct clamp connection method has the problem of high installation and adjustment difficulty, and the transition rope connection method is only suitable for medium and low speed scenarios. Neither can meet the dual requirements of high-speed railways for connection stability and adjustment flexibility.

[0004] Therefore, there is an urgent need for a segmented insulator connection structure that can improve radial freedom of movement, simplify the adjustment process, and adapt to complex track scenarios, in order to overcome the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this utility model is to provide a ball-head anchor connection structure and a segmented insulator to solve the problems mentioned in the background art. To achieve the above objective, this utility model provides the following technical solution:

[0006] The first aspect of this utility model provides a ball-head anchor connection structure applied to a segmented insulator. The ball-head anchor connection structure includes a wire clamp and an end frame. The wire clamp is provided with a ball-head anchor, and the end frame is provided with a ball-head anchor groove. The ball-head anchor is rotatably connected to the ball-head anchor groove to realize relative rotation between the wire clamp and the end frame.

[0007] Furthermore, the ball-head anchor groove is an elongated sliding groove, and its groove wall matches the shape of the ball-head anchor so that the ball-head anchor can slide and rotate in the ball-head anchor groove.

[0008] Furthermore, the ball-head anchor groove is provided with a limiting part that restricts the ball-head anchor from retracting.

[0009] Furthermore, the ball-head anchor groove is provided with an opening for the ball-head anchor to be inserted therein.

[0010] Furthermore, the end frame is provided with an anti-rotation component, which is used to limit the rotation of the wire clamp.

[0011] Furthermore, the anti-rotation assembly includes a nut and a bolt; the nut is fixedly connected to the end frame and aligned with the ball head anchor; the adjusting bolt is threaded into the nut, and by rotating the adjusting bolt, it presses against the ball head anchor to restrict the rotation of the clamp.

[0012] Furthermore, the wire clamp includes a connector and a clamping plate; one end of the connector is provided with a ball-head anchor, and the other end is connected to the clamping plate; the clamping plate is connected to the contact wire.

[0013] Furthermore, the end frame includes a body and a crimp terminal, the crimp terminal being fixedly connected to the body; one end of the crimp terminal is provided with a ball head anchor groove that movably connects with the ball head anchor, and the other end is connected to the insulator of the segmented insulator.

[0014] Furthermore, the main body is provided with a first metal guide rail on one side and a second metal guide rail on the other side.

[0015] A second aspect of this utility model also provides a segmented insulator, including an insulator and a ball-head anchor connection structure as described above, wherein the insulator is connected to the end frame of the ball-head anchor connection structure.

[0016] The beneficial effects of this utility model are as follows: This utility model breaks through the freedom limitation of traditional anchor shaft connection by rotatably connecting the ball head anchor and the ball head anchor groove, realizing multi-directional relative rotation between the line clamp and the end frame, so that the guide rail plane can easily fit the inclined plane of the rail, avoid pantograph arcing, and greatly improve the safety of train operation; at the same time, it simplifies the angle calibration process during installation and reduces the difficulty of construction. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the ball-head anchor connection structure of this utility model.

[0019] Figure 2 This is an exploded structural diagram of the ball-head anchor connection structure of this utility model.

[0020] Figure 3 This is an exploded structural diagram of the end frame of this utility model.

[0021] Figure 4 This is a schematic diagram of the ball-head anchor groove of this utility model.

[0022] Figure 5 This is a schematic diagram of the wire clamp of this utility model.

[0023] Figure 6 This is a schematic diagram showing the connection state between the ball-head anchor connection structure of this utility model and the insulator of the segmented insulator.

[0024] Figure 7 This is a cross-sectional view of the ball-head anchor connection structure of this utility model.

[0025] Figure 8 This is a schematic diagram of the segmented insulator of this utility model.

[0026] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0029] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0030] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0031] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0032] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0033] To address the technical problems of difficult adjustment and poor adaptability of existing segmented insulator connection structures, this application provides a ball-head anchor connection structure and a segmented insulator. By optimizing the connection structure design, the radial freedom of movement is improved, enabling convenient and precise alignment of the guide rail plane and the rail plane, thus ensuring train operation safety.

[0034] like Figure 1 and Figure 2 As shown, this application discloses a ball-head anchor connection structure applied to a segmented insulator. The ball-head anchor connection structure includes a clamp 1 and an end frame 2. The clamp 1 is provided with a ball-head anchor 11, and the end frame 2 is correspondingly provided with a ball-head anchor groove 21. The clamp 1 is used for fixed connection with the contact wire 4, and the end frame 2 is used for connection with the insulator 5 of the segmented insulator. The ball-head anchor 11 is movably embedded in the ball-head anchor groove 21, forming a rotatable mating relationship. The relative rotation of the clamp 1 and the end frame 2 is achieved through the rotatable connection of the ball-head anchor 1 to the ball-head anchor groove 21.

[0035] When it is necessary to adjust the plane of the metal guide rail of the segmented insulator, by applying external force to drive the ball head anchor 11 to rotate in the ball head anchor groove 21, the wire clamp 1 and the contact wire 4 can swing flexibly relative to the end frame 2, thereby adjusting the angle of the guide rail plane. This solves the core problem of difficulty in adjusting the parallelism between the guide rail plane and the rail plane caused by insufficient radial movement of the traditional structure, and is especially suitable for inclined track scenarios at railway bends.

[0036] This application breaks through the freedom limitation of traditional anchor shaft connection by rotatably connecting the ball head anchor 11 and the ball head anchor groove 21, realizing multi-directional relative rotation between the line clamp 1 and the end frame 2, so that the guide rail plane can easily fit the inclined plane of the rail, avoid pantograph arcing, and greatly improve the safety of train operation; at the same time, it simplifies the angle calibration process during installation and reduces the difficulty of construction.

[0037] like Figure 3 and Figure 4 As shown, in the specific implementation of this application, the ball-head anchor groove 21 is a long strip-shaped groove, and its groove wall contour matches the spherical shape of the ball-head anchor 11, so that the ball-head anchor 11 can slide and rotate in the ball-head anchor groove 21. The long strip structure provides axial sliding space for the ball-head anchor 11. Combined with the shape adaptability of the groove wall and the ball-head anchor 11, the ball-head anchor 11 can slide along the length direction of the groove and rotate around its own axis or the axis of the groove after being embedded in the groove, forming a combined sliding and rotating active connection relationship. During adjustment, the axial position of the segmented insulator can be finely adjusted by sliding, and the guide rail plane angle can be adjusted by rotation. The combination of the two increases the adjustment dimension of the connection structure. The axial sliding function can compensate for installation errors, and the angle rotation function ensures the plane parallelism calibration. The dual adjustment capability further improves the structural adaptability. The shape-matched groove wall and the ball-head anchor 11 reduce contact stress, reduce wear, and extend service life.

[0038] like Figure 4 As shown, in the specific implementation of this application, the ball head anchor groove 21 is provided with a limiting part 211 to restrict the ball head anchor 11 from exiting. The limiting part 211 can be a protruding structure extending inward along the edge of the groove, and its inner diameter is slightly smaller than the maximum outer diameter of the ball head anchor 11. After the ball head anchor 11 is installed into the ball head anchor groove 21, the limiting part 211 forms an axial limit on the ball head anchor 11 from the groove opening to prevent it from exiting the groove and ensure the mechanical reliability of the connection structure; at the same time, it does not affect the rotation and sliding function of the ball head anchor 11 in the groove, thus achieving a balance between stability and flexibility.

[0039] like Figure 4 As shown, in the specific implementation process of this application, the ball-head anchor groove 21 is provided with an opening 212 for inserting the ball-head anchor 11. The size of the opening 212 is adapted to the shape of the ball-head anchor 11, and the opening 212 adopts a smooth transition design. The ball-head anchor 11 can be directly embedded into the ball-head anchor groove 21 through the opening 212 to complete the rapid assembly of the wire clamp 1 and the end frame 2. This simplifies the assembly process, shortens the on-site construction time, and reduces the difficulty of high-altitude operations; the smooth transition opening 212 design reduces assembly damage and improves the assembly accuracy and service life of components.

[0040] like Figure 6 and Figure 7As shown, in the specific implementation of this application, the end frame 2 is provided with an anti-rotation component 3, which is used to limit the rotation of the wire clamp 1. Optionally, the anti-rotation component 3 is installed on the end frame 2 at a position corresponding to the wire clamp 1 or the ball anchor 11, and is fixedly connected to the end frame 2, with the wire clamp 1 or the ball anchor 11 within the effective range of the anti-rotation component 3. During the adjustment phase, the anti-rotation component 3 is first adjusted to the released state, which does not affect the rotation adjustment of the wire clamp 1 and the ball anchor 11; after the wire clamp 1 is adjusted to the target angle, the anti-rotation component 3 is adjusted to form an abutment or locking fit with the wire clamp 1 or the ball anchor 11, thereby limiting the rotation of the wire clamp 1 relative to the end frame 2, maintaining the stability of the adjusted angle, avoiding the wire clamp 1 from rotating on its own due to train running vibration, and ensuring the long-term stability of the parallelism of the guide rail plane.

[0041] like Figure 6 and Figure 7 As shown, in this embodiment, the anti-rotation component 3 includes a nut 31 and a bolt 32. The nut 31 is fixedly connected to the end frame 2 by welding, and the axial direction of the nut 31 is aligned with the ball head anchor 11. The adjusting bolt 32 is threaded into the nut 31, with one end of the bolt 32 facing the ball head anchor 11 and the other end being the operating end. By rotating the adjusting bolt 32 along the axis of the nut 31, the end of the bolt 32 presses against the ball head anchor 11. Friction is generated between the bolt 32, the groove wall of the ball head anchor groove 21, and the ball head anchor 11. This friction is greater than the driving force generated by the contact wire tension and vibration, thereby limiting the rotation of the ball head anchor 11 and the wire clamp 1. The threaded transmission structure enables precise adjustment of the clamping force, ensuring reliable anti-rotation effect; the structure is simple and easy to operate, facilitating on-site construction and subsequent angle fine-tuning; the surface contact clamping method between the bolt 32 and the ball head anchor 11 reduces local stress and avoids damage to the wire clamp 1.

[0042] like Figure 5 As shown, in the specific implementation of this application, the clamp 1 includes a connector 12 and a clamping plate 13. One end of the connector 12 is integrally formed with a ball-head anchor 11, and the other end is fixed to the clamping plate 13 by bolt connection. The inner side of the clamping plate 13 is designed with an arc-shaped structure adapted to the shape of the contact wire 4, and the clamping plate 13 is fixedly connected to the contact wire 4. The split structure of the connector 12 and the clamping plate 13 facilitates the replacement of clamping plates 13 of different sizes according to the specifications of the contact wire 4, improving the structural versatility; the integral design of the connector 12 and the ball-head anchor 11 improves the structural strength and reduces the risk of breakage.

[0043] like Figure 3As shown, in the specific implementation of this application, the end frame 2 includes a body 22 and a crimp terminal 23, which is fixedly connected to the body 22 as a whole. One end of the crimp terminal 23 has a ball head anchor groove 21 that movably connects with the ball head anchor 11, and the other end is connected to the insulator 5 of the segmented insulator, realizing the mechanical connection and force transmission between the end frame 2 and the insulator 5. The fixed connection between the crimp terminal 23 and the body 22 ensures the overall structural strength of the end frame 2 and meets the tension bearing requirements of the contact wire; the split design facilitates the selection of appropriate crimp terminals 23 according to different insulator 5 specifications, improving the versatility of the end frame 2; the integrated design of the ball head anchor groove 21 and the crimp terminal 23 reduces assembly steps and improves connection accuracy.

[0044] like Figure 6 As shown, in the specific implementation of this application, a first metal guide rail 6 is provided on one side of the main body 22, and a second metal guide rail 7 is provided on the other side. The guide rails are firmly fixed to the main body 22 by bolt connection, and the extension direction of the two guide rails is consistent with the direction of the contact wire 4. The lower surface of the guide rails is flush with the lower surface of the contact wire 4. The two metal guide rails form a conductive transition channel for the segmented insulator. The train pantograph smoothly transitions from the contact wire 4 to the surface of the guide rails, and then transitions to another segment of the contact wire 4 through the guide rails. The flush design of the guide rails and the contact wire 4 ensures smooth contact of the pantograph and reduces transition hard points.

[0045] like Figure 8 As shown, a segmented insulator of this application includes an insulator 5 and two ball-head anchor connection structures as described above. Both ends of the insulator 5 are fixedly connected to the end frames 2 of the ball-head anchor connection structures. The end frames 2, along with the clamps 1 and the contact wire 4, form a complete mechanical connection and electrical transition structure. The insulator 5 achieves electrical isolation between different power supply sections, while the ball-head anchor connection structures achieve mechanical connection and angle adjustment between the insulator 5 and the contact wire 4. The guide rail plane is adjusted to be parallel to the rail plane through the movable connection between the ball-head anchor 11 and the ball-head anchor groove 21, and the angle is locked by the anti-rotation component 3. The pantograph achieves a smooth transition between different sections of the contact wire through the guide rail.

[0046] The segmented insulator of this application inherits all the advantages of the ball-head anchor connection structure and solves the problem of difficult adjustment of traditional segmented insulators; the stable connection between the insulator 5 and the ball-head anchor connection structure ensures the overall mechanical strength and electrical insulation performance of the segmented insulator; the overall structure is adaptable to complex scenarios such as high speed and turning, improving the safety and flexibility of railway operation.

[0047] In summary, this utility model, through the movable connection structure of the ball head anchor 11 and the ball head anchor groove 21, significantly improves the radial freedom of movement of the segmented insulator, and completely solves the problem of difficulty in adjusting the parallelism between the guide rail plane and the rail plane in traditional structures. Especially at railway bends, the guide rail plane can be easily adjusted to keep parallel with the inclined rail plane, effectively preventing pantograph arcing, reducing the incidence of safety accidents, and providing a guarantee for the safe operation of trains.

[0048] It should also be noted that, without conflict, the embodiments of this utility model and the features therein can be combined with each other to obtain new embodiments.

[0049] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. The scope of protection of the present utility model should be determined by the scope of the claims. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A ball-head anchor connection structure applied to a segmented insulator, the ball-head anchor connection structure comprising a wire clamp (1) and an end frame (2), characterized in that, The wire clamp (1) is provided with a ball head anchor (11), and the end frame (2) is provided with a ball head anchor groove (21). The ball head anchor (11) is rotatably connected to the ball head anchor groove (21) to realize the relative rotation of the wire clamp (1) and the end frame (2).

2. The ball-head anchor connection structure according to claim 1, characterized in that, The ball head anchor groove (21) is a long strip-shaped groove, and its groove wall matches the shape of the ball head anchor (11) so that the ball head anchor (11) can slide and rotate in the ball head anchor groove (21).

3. The ball-head anchor connection structure according to claim 2, characterized in that, The ball head anchor groove (21) is provided with a limiting part (211) that restricts the ball head anchor (11) from exiting.

4. The ball-head anchor connection structure according to claim 2, characterized in that, The ball head anchor groove (21) is provided with an opening (212) for inserting the ball head anchor (11).

5. The ball-head anchor connection structure according to claim 1, characterized in that, The end frame (2) is provided with an anti-rotation component (3), which is used to limit the rotation of the wire clamp (1).

6. The ball-head anchor connection structure according to claim 5, characterized in that, The anti-rotation assembly (3) includes a nut (31) and a bolt (32); the nut (31) is fixedly connected to the end frame (2) and the nut (31) is aligned with the ball head anchor (11); the bolt (32) is threaded into the nut (31) and the bolt (32) is rotated to press the ball head anchor (11) to restrict the rotation of the clamp (1).

7. The ball-head anchor connection structure according to claim 1, characterized in that, The clamp (1) includes a connector (12) and a clamp plate (13); one end of the connector (12) is provided with a ball head anchor (11) and the other end is connected to the clamp plate (13); the clamp plate (13) is connected to the contact wire (4).

8. The ball-head anchor connection structure according to claim 1, characterized in that, The end frame (2) includes a body (22) and a crimp terminal (23). The crimp terminal (23) is fixedly connected to the body (22). One end of the crimp terminal (23) is provided with a ball head anchor groove (21) that is movably connected to the ball head anchor (11), and the other end is connected to the insulator (5) of the segmented insulator.

9. The ball-head anchor connection structure according to claim 8, characterized in that, The main body (22) has a first metal guide rail (6) on one side and a second metal guide rail (7) on the other side.

10. A segmented insulator, characterized in that, It includes an insulator (5) and a ball-head anchor connection structure as described in any one of claims 1 to 9, wherein the insulator (5) is connected to the end frame (2) of the ball-head anchor connection structure.

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