Pantograph head device

Abstract

The utility model relates to a pantograph technical field, concretely discloses a pantograph head device, wherein, adopts the combination structure design of first hinged structure and plate spring, effectively absorbs the vibration impact of contact through the characteristics of plate spring, reduces the mechanical wear and tear of carbon slide plate, prolongs its service life, and plate spring has a larger adaptive interval to the height change of contact net, and also helps the balanced pressure distribution in the horizontal direction, and further makes it form a multistage, flexible conductive system, while guaranteeing continuous, stable current collection, adapts to the up and down fluctuation of contact net, and bears the possible electric arc and vibration, ensures constant contact pressure, effectively improves flexibility and anti-vibration impact performance, guarantees the stable and reliable operation of rail transit system. Meanwhile, installation and later maintenance are simple, do not need to disassemble the pantograph main body on a large scale, and also facilitate the adjustment of plate spring tension and the replacement of carbon slide plate.

Description

Technical Field

[0001] This utility model relates to the field of pantograph technology, and in particular to a pantograph head device. Background Technology

[0002] The pantograph is the core device for electric traction locomotives (including subways and trams) to obtain power from the overhead contact line, playing a crucial role in the railway electrification transportation system. The pantograph head is a key component of this device, directly affecting the current collection performance of the electric traction locomotive. Electric traction locomotives generally adopt the pantograph-contact line current collection method, that is, the pantograph head contacts the contact wire to achieve efficient transmission of electrical energy from the grid to the locomotive.

[0003] The flexibility of the pantograph head is a key characteristic in pantograph design, and its performance directly affects the stability, continuity, and overall current collection quality of power transmission. To ensure ideal current collection, the pantograph head must possess multi-degree-of-freedom movement capabilities to adapt to changes in height and angle that may occur in the overhead contact line during actual operation, and to effectively buffer and absorb various mechanical shocks and vibrations. However, traditional pantograph heads have certain shortcomings in terms of flexibility and durability, making it difficult to meet the requirements of modern rail transit for highly reliable current collection systems.

[0004] Therefore, there is an urgent need for a pantograph head device to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a pantograph head device that can effectively improve flexibility and vibration and shock resistance, and ensure the stable and reliable operation of the rail transit system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a pantograph head device, comprising:

[0008] Support assembly;

[0009] A plurality of carbon plate assemblies are fixedly mounted on the support assembly. Each carbon plate assembly includes two carbon plate seats and two carbon plate slides. The two carbon plate seats are disposed opposite to each other and spaced apart on the support assembly along a first direction. The two carbon plate slides are respectively disposed on the two carbon plate seats and are disposed opposite to each other and spaced apart along a second direction. The first direction and the second direction are perpendicular to each other. A carbon plate assembly is disposed between each carbon plate slide and each carbon plate seat. The carbon plate assembly includes a leaf spring, an upper support plate, a lower support plate, and a first pin. The upper support plate is fixedly installed between the top of the carbon plate slide and the leaf spring. The bottom of the leaf spring is fixedly installed between the lower support plate and the carbon plate seat. The upper support plate and the lower support plate are connected by the first pin to form a first hinge structure.

[0010] A plurality of connector assemblies are provided, each corresponding to one of the carbon plate assemblies, and the connector assemblies are electrically connected between the carbon plate and the high-voltage cable.

[0011] As a preferred technical solution of the above-mentioned pantograph head device, the support assembly includes a beam arm, a hinge seat, a base plate, a second pin, and several elastic elements. The hinge seat is fixedly disposed on the base plate, the beam arm is fixedly disposed through the carbon plate seat, and the beam arm and the hinge seat are connected by the second pin to form a second hinge structure. Several elastic elements are disposed between the beam arm and the base plate.

[0012] As a preferred technical solution of the above-mentioned pantograph head device, the number of elastic elements is two, and the two elastic elements are arranged symmetrically with respect to the axis of the second pin.

[0013] As a preferred technical solution for the above-mentioned pantograph head device, the elastic element is a compression spring.

[0014] As a preferred technical solution of the above-mentioned pantograph head device, the carbon plate assembly further includes a first limiting ring and a second limiting ring, both of which are fixedly sleeved on the beam arm, and the joint assembly is disposed between the first limiting ring and the second limiting ring.

[0015] As a preferred technical solution of the above-mentioned pantograph head device, a first half-keyway is provided on the end face of the beam arm, and a second half-keyway is provided on the carbon plate seat. The first half-keyway and the second half-keyway are mated to form a keyway cavity, which is used to press in a connecting key.

[0016] As a preferred technical solution of the above-mentioned pantograph head device, the carbon plate assembly further includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod being arranged opposite to each other and spaced apart along the second direction, and both the first connecting rod and the second connecting rod being fixedly connected between the two carbon plate seats.

[0017] As a preferred technical solution of the above-mentioned pantograph head device, the leaf spring has a ring-shaped structure, and the top of the leaf spring has a first annular circumferential surface, and the bottom of the leaf spring has a second annular circumferential surface. The second annular circumferential surface has a notch to form two connecting sections. The carbon plate assembly also includes two fasteners, which are arranged one-to-one with the two connecting sections. The fasteners pass through the carbon plate seat and the connecting sections in sequence and are fixed to the lower support plate.

[0018] As a preferred technical solution of the above-mentioned pantograph head device, the carbon plate assembly further includes a stud and a nut. The stud protrudes from the bottom of the carbon plate and passes through the upper support plate and the first annular circumferential part in sequence, and is fastened to the nut.

[0019] As a preferred technical solution of the above-mentioned pantograph head device, the connector assembly is disposed between the two carbon sliding plates, and the connector assembly includes a plurality of first braided copper strips, a plurality of second braided copper strips, a copper busbar and a connector base. The copper busbar is fixedly disposed on the connector base, and the connector base is fixedly disposed on the support assembly. One end of the plurality of first braided copper strips is electrically connected to the copper busbar, and the other end of the plurality of first braided copper strips is connected to one of the carbon sliding plates. One end of the plurality of second braided copper strips is electrically connected to the copper busbar, and the other end of the plurality of second braided copper strips is connected to the other carbon sliding plate. One end of the high-voltage cable is electrically connected to the copper busbar.

[0020] The beneficial effects of this utility model are as follows:

[0021] This utility model provides a pantograph head device, which includes: a support assembly, several carbon plate assemblies, and several connector assemblies. The several carbon plate assemblies are all fixedly mounted on the support assembly. Each carbon plate assembly includes two carbon plate seats and two carbon plate slides. The two carbon plate seats are arranged opposite to each other and spaced apart on the support assembly along a first direction. The two carbon plate slides are respectively mounted on the two carbon plate seats and are arranged opposite to each other and spaced apart along a second direction. The first direction and the second direction are perpendicular to each other. A carbon plate assembly is provided between the carbon plate slides and the carbon plate seats. The carbon plate assembly includes a leaf spring, an upper support plate, a lower support plate, and a first pin. The upper support plate is fixedly installed between the top of the carbon plate slide and the leaf spring, and the bottom of the leaf spring is fixedly installed between the lower support plate and the carbon plate seat. The upper support plate and the lower support plate are connected by the first pin to form a first hinge structure. The several connector assemblies are arranged one-to-one with the several carbon plate assemblies, and the connector assemblies are electrically connected between the carbon plate slide and the high-voltage cable. This design, employing a combination of a first hinge structure and a leaf spring, effectively absorbs vibration and impact during contact, reducing mechanical wear on the carbon contact plate and extending its service life. The leaf spring has a wide adaptability range to changes in the height of the contact wire and also helps to balance pressure distribution in the horizontal direction. This further creates a multi-stage, flexible conductive system that ensures continuous and stable current collection while adapting to the vertical fluctuations of the contact wire and withstanding potential arcing and vibration, ensuring constant contact pressure. This effectively improves flexibility and vibration resistance, guaranteeing the stable and reliable operation of the rail transit system. Furthermore, installation and subsequent maintenance are simple, requiring no large-scale disassembly of the pantograph body, and facilitating adjustment of leaf spring tension and replacement of the carbon contact plate. Attached Figure Description

[0022] Figure 1 A schematic diagram of the pantograph head device provided by this utility model;

[0023] Figure 2 A schematic diagram of the support assembly provided by this utility model;

[0024] Figure 3 A schematic diagram of the connector assembly provided by this utility model;

[0025] Figure 4 This is a schematic diagram of the carbon plate assembly provided by this utility model;

[0026] Figure 5 An exploded view of the carbon plate assembly provided by this utility model.

[0027] in:

[0028] 100. Support assembly; 200. Carbon fiber plate assembly; 300. Connector assembly;

[0029] 1. Carbon plate holder; 2. Carbon plate slide; 3. Leaf spring; 4. Upper support plate; 5. Lower support plate; 6. First pin; 7. Beam arm; 8. Hinge seat; 9. Base plate; 10. Second pin; 11. Elastic element; 12. First limiting ring; 13. Second limiting ring; 14. First connecting rod; 15. Second connecting rod; 16. Fastener; 17. Stud; 18. Nut; 19. First braided copper strip; 20. Second braided copper strip; 21. Copper busbar; 22. Connector base; 23. High-voltage cable. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0032] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 5As shown, this embodiment provides a pantograph head device, which includes: a support assembly 100, a plurality of carbon plate assemblies 200, and a plurality of connector assemblies 300. The plurality of carbon plate assemblies 200 are all fixedly mounted on the support assembly 100. Each carbon plate assembly 200 includes two carbon plate seats 1 and two carbon plate slides 2. The two carbon plate seats 1 are disposed opposite to each other and spaced apart on the support assembly 100 along a first direction. The two carbon plate slides 2 are respectively disposed on the two carbon plate seats 1, and the two carbon plate slides 2 are arranged opposite to each other and spaced apart along a second direction. The first direction and the second direction are perpendicular to each other. A carbon plate assembly is disposed between the carbon plate slides 2 and the carbon plate seats 1. The carbon plate assembly includes a leaf spring 3 and an upper support. Plate 4, lower support plate 5 and first pin 6, carbon slide plate 2 is mounted on carbon plate seat 1 via leaf spring 3, upper support plate 4 is fixedly installed between the top of carbon slide plate 2 and leaf spring 3, and bottom of leaf spring 3 is fixedly installed between lower support plate 5 and carbon plate seat 1 to protect the components from being scratched by leaf spring 3. Upper support plate 4 and lower support are saddle-shaped, and there is a waist-shaped hole at the junction of upper support plate 4 and lower support for the first pin 6 to pass through to form a first hinge structure. Cotter pin is used at the opening of the first pin 6 to fix the first pin 6. Several connector assemblies 300 are arranged one-to-one with several carbon plate assemblies 200, and the connector assemblies 300 are electrically connected between carbon slide plate 2 and high voltage cable 23. This design, employing a combination of a first hinge structure and leaf spring 3, effectively absorbs vibration and impact during contact through the characteristics of leaf spring 3, reducing mechanical wear on carbon sliding plate 2 and extending its service life. Leaf spring 3 has a large adaptability range to changes in contact wire height and also helps to balance pressure distribution in the horizontal direction, further forming a multi-stage, flexible conductive system. While ensuring continuous and stable current collection, it adapts to the vertical fluctuations of the contact wire and withstands potential arcing and vibration, ensuring constant contact pressure and effectively improving flexibility and vibration resistance, thus guaranteeing the stable and reliable operation of the rail transit system. Simultaneously, installation and subsequent maintenance are simple, requiring no large-scale disassembly of the pantograph body, and facilitating adjustment of leaf spring 3 tension and replacement of carbon sliding plate 2. It should be noted that the first direction and the second direction are respectively... Figure 1 The arrow in the image indicates the direction.

[0036] Specifically, this embodiment provides the following exemplary technical solution: The support assembly 100 includes a beam arm 7, a hinge seat 8, a base plate 9, a second pin 10, and several elastic elements 11. The hinge seat 8 is fixedly mounted on the base plate 9, and the beam arm 7 is fixedly inserted through the carbon plate seat 1. The beam arm 7 and the hinge seat 8 are connected by the second pin 10 to form a second hinge structure. Several elastic elements 11 are disposed between the beam arm 7 and the base plate 9. The base plate 9 is mounted on the pantograph body, thereby enabling the pantograph head to have the ability to float at a large angle. This configuration, using a combined structure design of the second hinge structure and elastic elements 11, allows the hinge to provide rotational freedom, while the elastic elements 11 provide reset buffer or nonlinear buffer force. The two work together to achieve "large angle" and "controllable and resettable" floating, enabling the pantograph head to adapt to complex traffic conditions and further improving the flexibility and durability of the overall device.

[0037] It should be noted that the beam arm 7 is made of insulating material, which can be epoxy fiberglass material, but is not limited to epoxy fiberglass material.

[0038] Furthermore, there are two elastic elements 11, which are arranged symmetrically with respect to the axis of the second pin 10. Even further, the elastic element 11 is a compression spring.

[0039] In this embodiment, there are two carbon plate assemblies 200. The two carbon plate assemblies 200 are arranged symmetrically with respect to the center of the beam arm 7. In each carbon plate assembly 200, the two carbon plate slides 2 supported by four leaf springs 3 have a small omnidirectional angular adaptability. The first hinge structure formed by the intersection of the upper support plate 4 and the lower support plate 5 prevents the leaf springs 3 from excessively deforming and causing the mechanism to fail.

[0040] Optionally, in order to avoid adverse phenomena such as axial movement of the joint assembly 300, the carbon plate assembly 200 also includes a first limiting ring 12 and a second limiting ring 13. The first limiting ring 12 and the second limiting ring 13 are both fixedly sleeved on the beam arm 7, and the joint assembly 300 is disposed between the first limiting ring 12 and the second limiting ring 13.

[0041] Optionally, to prevent the carbon plate assembly 200 from rotating circumferentially, a first half-keyway is provided on the end face of the beam arm 7, and a second half-keyway is provided on the carbon plate seat 1. The first half-keyway and the second half-keyway are mated to form a keyway cavity. The keyway cavity is used to press in the connecting key, and the width of the keyway cavity is slightly larger than the width of the connecting key.

[0042] Optionally, in order to further improve the connection strength of the overall structure of the carbon plate assembly 200, the carbon plate assembly 200 also includes a first connecting rod 14 and a second connecting rod 15. The first connecting rod 14 and the second connecting rod 15 are arranged opposite to each other and spaced apart along the second direction, and both the first connecting rod 14 and the second connecting rod 15 are fixedly connected between the two carbon plate seats 1.

[0043] Optionally, the leaf spring 3 has a ring-shaped structure, with a first annular circumferential surface at the top and a second annular circumferential surface at the bottom. The second annular circumferential surface has a notch to form two connecting sections. The carbon plate assembly also includes two fasteners 16, each corresponding to one of the two connecting sections. The fasteners 16 pass through the carbon plate seat 1 and the connecting sections sequentially and are fixed to the lower support plate 5. Further, the fasteners 16 are bolts.

[0044] Optionally, the carbon plate assembly also includes a stud 17 and a nut 18. The stud 17 protrudes from the bottom of the carbon plate 2 and passes through the upper support plate 4 and the first annular circumferential part in sequence, and is fastened to the nut 18.

[0045] Optionally, the connector assembly 300 is disposed between two carbon sliding plates 2, and the connector assembly 300 includes a plurality of first braided copper strips 19, a plurality of second braided copper strips 20, a copper busbar 21, and a connector base 22. The copper busbar 21 is fixedly disposed on the connector base 22, and the connector base 22 is fixedly sleeved on the beam arm 7. One end of the plurality of first braided copper strips 19 is electrically connected to the copper busbar 21, and the other end of the plurality of first braided copper strips 19 is connected to one of the carbon sliding plates 2. One end of the plurality of second braided copper strips 20 is electrically connected to the copper busbar 21, and the other end of the plurality of second braided copper strips 20 is connected to the other carbon sliding plate 2. One end of the high-voltage cable 23 is electrically connected to the copper busbar 21. Further, the connector base 22 is made of insulating material, specifically epoxy fiberglass material, but not limited to epoxy fiberglass material.

[0046] In this embodiment, there are three of each of the first braided copper strip 19 and the second braided copper strip 20, and the first braided copper strip 19 and the second braided copper strip 20 are respectively disposed on opposite sides of the connector base 22. The copper busbar 21 is bent to form a semi-enclosed sleeve on the connector base 22, and the copper busbar 21 is fastened to the top of the connector base 22. Of course, in other embodiments, the number and current carrying capacity of the first braided copper strip 19 and the second braided copper strip 20 can be set according to specific needs, and are not further limited here.

[0047] It should be noted that the specific transmission line of the pantograph head is as follows: after the carbon sliding plate 2 comes into direct contact with the contact wire, the transmission is conducted from its bottom to the braided copper strip, and then from the braided copper strip to the copper busbar 21 of the connector assembly 300 to the high-voltage cable 23. Among them, the carbon sliding plate 2 has good conductivity, lubricity and wear resistance. Its core function is to reliably collect the dynamic current sliding through the contact wire. The current flows from the contact wire into the contact surface of the carbon sliding plate 2, and then is conducted downward inside the carbon sliding plate 2 to its bottom and to multiple braided copper strips. The current from the multiple braided copper strips finally converges on the copper busbar 21 of the connector assembly 300. The copper busbar 21 is a rectangular copper conductor with a large cross-section. It has a strong current carrying capacity, stable structure and is easy to install multiple connection points. It gathers the dispersed current from the braided copper strips and provides a robust and reliable interface. One or more high-voltage cables 23 with large cross-sections and extremely high insulation levels are firmly connected to the copper busbar 21 of the connector assembly 300 by bolts or crimping. The current flows from the copper busbar 21 into the high-voltage cable 23, and then passes through the roof insulator and enters the electrical system inside the locomotive.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pantograph head device, characterized in that, include: Support assembly (100); A plurality of carbon plate assemblies (200) are fixedly mounted on the support assembly (100). Each carbon plate assembly (200) includes two carbon plate seats (1) and two carbon plate slides (2). The two carbon plate seats (1) are disposed opposite to each other and spaced apart on the support assembly (100) along a first direction. The two carbon plate slides (2) are respectively disposed on the two carbon plate seats (1) and are disposed opposite to each other and spaced apart along a second direction. The first direction and the second direction are opposite to each other. The carbon plate assembly is provided between the carbon plate slide (2) and the carbon plate seat (1), and the carbon plate assembly includes a leaf spring (3), an upper support plate (4), a lower support plate (5) and a first pin (6). The upper support plate (4) is fixedly installed between the top of the carbon plate slide (2) and the leaf spring (3). The bottom of the leaf spring (3) is fixedly installed between the lower support plate (5) and the carbon plate seat (1). The upper support plate (4) and the lower support plate (5) are connected by the first pin (6) to form a first hinge structure. A plurality of connector assemblies (300) are provided in a one-to-one correspondence with a plurality of carbon plate assemblies (200), and the connector assembly (300) is electrically connected between the carbon plate (2) and the high voltage cable (23).

2. The pantograph head device according to claim 1, characterized in that, The support assembly (100) includes a beam arm (7), a hinge seat (8), a base plate (9), a second pin (10), and a plurality of elastic elements (11). The hinge seat (8) is fixedly disposed on the base plate (9), and the beam arm (7) is fixedly disposed through the carbon plate seat (1). The beam arm (7) and the hinge seat (8) are connected by the second pin (10) to form a second hinge structure. The plurality of elastic elements (11) are disposed between the beam arm (7) and the base plate (9).

3. The pantograph head device according to claim 2, characterized in that, The number of elastic elements (11) is two, and the two elastic elements (11) are arranged symmetrically with respect to the axis of the second pin (10).

4. The pantograph head device according to claim 2, characterized in that, The elastic element (11) is a compression spring.

5. The pantograph head device according to claim 2, characterized in that, The carbon plate assembly (200) further includes a first limiting ring (12) and a second limiting ring (13), both of which are fixedly sleeved on the beam arm (7), and the joint assembly (300) is disposed between the first limiting ring (12) and the second limiting ring (13).

6. The pantograph head device according to claim 2, characterized in that, The beam arm (7) is provided with a first half keyway on its end face, and the carbon plate seat (1) is provided with a second half keyway. The first half keyway and the second half keyway are mated together to form a keyway cavity, which is used to press in a connecting key.

7. The pantograph head device according to any one of claims 1-6, characterized in that, The carbon plate assembly (200) further includes a first link (14) and a second link (15), the first link (14) and the second link (15) being arranged opposite to each other and spaced apart along the second direction, and the first link (14) and the second link (15) being fixedly connected between the two carbon plate seats (1).

8. The pantograph head device according to any one of claims 1-6, characterized in that, The leaf spring (3) has a ring structure, and the top of the leaf spring (3) has a first annular circumferential surface, and the bottom of the leaf spring (3) has a second annular circumferential surface. The second annular circumferential surface has a notch to form two connecting sections. The carbon plate assembly also includes two fasteners (16). The two fasteners (16) are arranged one-to-one with the two connecting sections, and the fasteners (16) pass through the carbon plate seat (1) and the connecting sections in sequence and are fixed to the lower support plate (5).

9. The pantograph head device according to claim 8, characterized in that, The carbon plate assembly also includes a stud (17) and a nut (18). The stud (17) protrudes from the bottom of the carbon plate (2) and passes through the upper support plate (4) and the first annular circumferential surface in sequence, and is fastened to the nut (18).

10. The pantograph head device according to any one of claims 1-6, characterized in that, The connector assembly (300) is disposed between the two carbon slide plates (2), and the connector assembly (300) includes a plurality of first braided copper strips (19), a plurality of second braided copper strips (20), a copper busbar (21) and a connector base (22). The copper busbar (21) is fixedly disposed on the connector base (22), and the connector base (22) is fixedly disposed on the support assembly (100). One end of the plurality of first braided copper strips (19) is electrically connected to the copper busbar (21), and the other end of the plurality of first braided copper strips (19) is connected to one of the carbon slide plates (2). One end of the plurality of second braided copper strips (20) is electrically connected to the copper busbar (21), and the other end of the plurality of second braided copper strips (20) is connected to the other carbon slide plate (2). One end of the high-voltage cable (23) is electrically connected to the copper busbar (21).

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