Pantograph head device and rail vehicle

Abstract

The application discloses a pantograph head device and a railway vehicle, and relates to the technical field of rail transit. The pantograph head device comprises a single-slipper head, the inner side of the single-slipper head is provided with a first connecting assembly and a second connecting assembly; two spring cylinders are symmetrically arranged about the middle section of the single-slipper head, one of the two spring cylinders is connected to the single-slipper head through the first connecting assembly, and the other of the two spring cylinders is connected to the single-slipper head through the second connecting assembly; and a connecting shaft is used for fixedly connecting the two spring cylinders, and the length direction of the two spring cylinders is perpendicular to the extension direction of the single-slipper head. The pantograph head device provided by the application can effectively reduce the wind resistance and the mass of the head; in addition, the two spring cylinders are symmetrically arranged about the middle section of the single-slipper head, the airflow flows along the length direction of the spring cylinders, so that the structure of the pantograph head device is compact, and the layout is more reasonable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit, in particular to a pantograph head device. BACKGROUND

[0002] With the increase of vehicle speed, especially for high-speed EMUs above 400km / h, the smoothness of the catenary has a greater impact on the pantograph. With the increase of running speed, the influence of air flow on the pantograph is greater, and the impact of aerodynamic lift on the stable operation of the pantograph head is greater. The pantograph head and catenary following performance become very critical, and the weight and shape of the pantograph head component have higher requirements on aerodynamic performance and noise. The dynamic performance of the existing pantograph head cannot meet the requirements of the current high-speed EMU.

[0003] In view of the above, how to provide a pantograph head device with excellent aerodynamic performance and compact structure is a problem that needs to be solved by those skilled in the art at present. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a pantograph head device that can effectively reduce the vibration caused by wind resistance and wind load and improve the aerodynamic performance.

[0005] Another purpose of the present application is to provide a rail vehicle comprising the pantograph head device.

[0006] In order to achieve the above purpose, the present application provides the following technical solutions:

[0007] A pantograph head device comprises:

[0008] A single slide plate head is provided with a first connecting assembly and a second connecting assembly on the inner side;

[0009] Two spring barrels are symmetrically arranged about the middle section of the single slide plate head, one of the two spring barrels is connected to the single slide plate head through the first connecting assembly, and the other of the two spring barrels is connected to the single slide plate head through the second connecting assembly;

[0010] A connecting shaft is fixedly connected to the two spring barrels, and the length direction of the two spring barrels is perpendicular to the extension direction of the single slide plate head.

[0011] Optionally, the spring barrel comprises a shell assembly and an internal assembly, the outer surface of the shell assembly is streamlined, and the shell assembly completely wraps the internal assembly.

[0012] Optionally, the shell assembly comprises:

[0013] The main body structure is a cylindrical tube structure;

[0014] The fairing is a conical or hemispherical shell.

[0015] Optionally, the internal assembly comprises a rotating shaft and a torsion structure, the rotating shaft is fixedly provided with a swing arm for rotationally connecting with the first connecting assembly or the second connecting assembly; the rotation axis of the swing arm relative to the first connecting assembly or the second connecting assembly is parallel to the rotating shaft.

[0016] The torsion structure comprises:

[0017] The fixing member is rotatable relative to the rotating shaft.

[0018] The spring is sleeved on the outer periphery of the rotating shaft, and one end of the spring is fixedly arranged on the rotating shaft, and the other end is fixedly arranged on the fixing member.

[0019] Optionally, the torsion structure further comprises at least two limiting screws fixedly arranged on the rotating shaft and a torsion rod, the limiting screws are arranged in the radial direction of the rotating shaft, one end of the torsion rod is fixedly arranged on the fixing member, and the other end is located between the adjacent two limiting screws and is arranged in a gap with the limiting screws.

[0020] Optionally, the torsion structure comprises a clamping member fixedly arranged on the rotating shaft, the fixing member is provided with a limiting protrusion for limiting the rotation angle of the rotating shaft, and the rotating shaft stops rotating when the clamping member contacts the fixing member.

[0021] Optionally, the swing arm is connected to the middle position of the length direction of the rotating shaft, the number of the torsion structures is two, and the two torsion structures are symmetrically arranged about the middle section of the rotating shaft.

[0022] Optionally, the first connecting assembly comprises a connecting member fixedly arranged on the lower surface of the single-ski bow head, a first connecting seat and a first pin shaft, the second connecting assembly comprises a second connecting seat and a second pin shaft, one end of the first connecting seat is rotationally connected with the connecting member, the other end is rotationally connected with one of the spring barrels through the first pin shaft, and one end of the second connecting seat is rotationally connected with the single-ski bow head, and the other end is rotationally connected with the other spring barrel through the second pin shaft.

[0023] Optionally, the first connecting seat, the second connecting seat, the connecting member, the clamping member, the fixing member, the rotating shaft and the swing arm are all made of aluminum alloy.

[0024] A rail vehicle comprises the pantograph bow head device according to any one of the above.

[0025] During the use of the pantograph head device provided by this invention, the airflow flows along the length direction of the spring cylinder. Since this application adopts a single-slide pantograph head, compared with the case of a double-slide pantograph head, it can effectively reduce wind resistance and pantograph head mass. In addition, the two spring cylinders are symmetrically arranged about the middle section of the single-slide pantograph head, and the length direction of the spring cylinders is perpendicular to the extension direction of the single-slide pantograph head. The airflow flows along the length direction of the spring cylinders, making the pantograph head device more compact and the layout more reasonable.

[0026] In addition, the present invention also provides a rail vehicle including the above-described pantograph head device. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1 A schematic diagram of a specific embodiment of the pantograph head device provided by the present invention;

[0029] Figure 2 for Figure 1 A front view schematic diagram of the pantograph head assembly;

[0030] Figure 3 for Figure 1 A top view of the pantograph head assembly;

[0031] Figure 4 This is a schematic diagram of the external appearance of the spring cylinder provided by the present invention;

[0032] Figure 5 This is a schematic diagram of the internal structure of the spring cylinder provided by the present invention.

[0033] Figures 1-5 middle:

[0034] 1 is the single-slide bow head, 2 is the connector, 3 is the first connecting seat, 4 is the first pin, 5 is the spring cylinder, 6 is the pressure plate, 7 is the connecting shaft, 8 is the connecting plate, 9 is the first clamping screw, 10 is the second clamping screw, 11 is the baffle, 12 is the second connecting seat, 13 is the flow guide, 14 is the main structure, 15 is the cylindrical connecting seat, 16 is the snap-fit ​​part, 17 is the fixing part, 18 is the torsion bar, 19 is the spring, 20 is the limit screw, 21 is the bearing seat, 22 is the rotating shaft, and 23 is the swing arm. Detailed Implementation

[0035] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of the present application.

[0036] The core of the present application is to provide a pantograph head device, which can effectively reduce the vibration caused by wind resistance and wind load and improve the aerodynamic performance.

[0037] Another core of the present application is to provide a railway vehicle comprising the pantograph head device.

[0038] Please refer to Figures 1 to 5 .

[0039] The embodiment discloses a pantograph head device, which comprises a single-slipper head 1, a first connecting assembly and a second connecting assembly are arranged on the inner side of the single-slipper head 1, two spring barrels 5 are symmetrically arranged about the middle section of the single-slipper head 1, one of the two spring barrels 5 is connected to the single-slipper head 1 through the first connecting assembly, the other of the two spring barrels 5 is connected to the single-slipper head 1 through the second connecting assembly, and a connecting shaft 7 is used for fixedly connecting the two spring barrels 5, and the length direction of the two spring barrels 5 is perpendicular to the extension direction of the single-slipper head 1.

[0040] It should be noted that the spring barrel 5 is internally provided with a structure for providing torsion force, and in actual use, when the slipper is pressed downward under the action of the overhead contact system, the spring barrel 5 will be horizontally displaced, so as to move the single-slipper head 1 downward.

[0041] In the process of using the pantograph head device, the airflow flows along the length direction of the spring barrel 5, and since the single-slipper head 1 is adopted, compared with the double-slipper head, the wind resistance and the mass of the head can be effectively reduced; in addition, the two spring barrels 5 are symmetrically arranged about the middle section of the single-slipper head 1, and the length direction of the spring barrel 5 is perpendicular to the extension direction of the single-slipper head 1, so that the airflow flows along the length direction of the spring barrel 5, so that the structure of the pantograph head device is compact and the layout is more reasonable.

[0042] On the basis of the above-mentioned embodiment, the spring barrel 5 comprises a shell assembly and an internal assembly, the outer surface of the shell assembly is streamlined, and the shell assembly completely wraps the internal assembly.

[0043] In this specific embodiment, the internal components are completely enclosed by the housing assembly, which avoids exposing the internal components to the outside and affecting aerodynamic performance, thereby improving the aerodynamic performance of the pantograph head device. The streamlined shape of the spring cylinder 5 structure results in low aerodynamic drag, reducing the impact of aerodynamic loads on the pantograph head and weakening the fluctuation effect of aerodynamic loads on the head.

[0044] Furthermore, the shell assembly includes a main structure 14 and a flow guide 13. The main structure 14 is a cylindrical structure. Flow guides 13 are provided at both ends of the main structure 14. Flow guides 13 are conical or hemispherical shells.

[0045] The design of the deflector 13 improves the overall flow guiding performance of the spring cylinder 5, greatly reduces the resistance of the bow head, and reduces the impact of wind resistance on the bow head spring cylinder 5.

[0046] like Figure 4 As shown, the swing arm 23, which is connected to the internal components of the spring cylinder 5, extends out from the main structure 14. The main structure 14 needs to have a through hole for the swing arm 23 to extend. A cylindrical connecting seat 15 can be fitted at the position where the swing arm 23 extends, so that the spring cylinder 5 is completely wrapped and the whole body forms a cylindrical shape with conical guide shields 13 at both ends to further reduce wind resistance.

[0047] Combination Figure 1 , Figure 4 As shown, the mounting holes on the cylindrical connecting seat 15 are blocked by the baffle 11, making the outer surface of the spring cylinder 5 a smooth and flat surface, further improving the flowability.

[0048] Based on the above embodiments, the internal components include a rotating shaft 22 and a torsion structure. The rotating shaft 22 is fixedly provided with a swing arm 23 for rotatably connecting with the first connecting component or the second connecting component. The rotation axis of the swing arm 23 relative to the first connecting component or the second connecting component is parallel to the rotating shaft 22. The torsion structure includes a fixing member 17 and a spring 19. The fixing member 17 is rotatable relative to the rotating shaft 22. The spring 19 is sleeved on the outer periphery of the rotating shaft 22, and one end of the spring 19 is fixed to the rotating shaft 22, and the other end is fixed to the fixing member 17.

[0049] like Figure 5As shown, the rotating shaft 22 is provided with a bearing seat 21, the bearing seat 21 is internally provided with a bearing, the inner ring of the bearing is fixed on the rotating shaft 22, and the rotating shaft 22 can move relative to the bearing seat 21. The bearing seat 21 is fixed to the cylindrical connecting seat 15, so as to realize that the entire spring cylinder 5 is fixed to the connecting shaft 7 and the connecting plate 8. The swing arm 23 is fixed to the rotating shaft 22 through bolts, so that the swing arm 23 can rotate synchronously with the rotating shaft 22. The clamping piece 16 is fixed to the end of the rotating shaft 22, and the fixing piece 17 is rotatably arranged relative to the rotating shaft 22. Specifically, the fixing piece 17 can be fixed to the shell assembly. When the rotating shaft 22 rotates to the limit position, the clamping piece 16 contacts the fixing piece 17, so as to limit the rotation angle of the rotating shaft 22.

[0050] Specifically, the clamping piece 16 can be a clamping block structure protrudingly arranged.

[0051] In the specific use process, when the rotating shaft 22 drives the spring 19 to twist, since the other end of the spring 19 is fixed to the fixing piece 17, and the fixing piece 17 is fixedly arranged and cannot rotate with the rotating shaft 22, the spring 19 generates a torsional moment. Specifically, the spring 19 can be a torsional spring.

[0052] Further, the torsion structure further includes at least two limiting screws 20 fixed to the rotating shaft 22 and a torsion rod 18. The limiting screws 20 are protrudingly arranged along the radial direction of the rotating shaft 22. One end of the torsion rod 18 is fixed to the fixing piece 17, and the other end is located between the adjacent two limiting screws 20 and is gapingly arranged with the limiting screws 20.

[0053] In the specific use process, when the rotating shaft 22 rotates, the limiting screws 20 rotate around the axis with the rotating shaft 22, and the gap between the limiting screws 20 and the torsion rod 18 gradually decreases. When there is no gap, the torsion rod 18 is driven to twist, causing torsional deformation of the torsion rod 18, and further causing the torsion rod 18 to generate a certain torsional moment.

[0054] Specifically, the torsion rod 18 can be a lever or a rod-shaped structure of other materials meeting the requirements.

[0055] In the specific embodiment, since the spring 19 and the torsion rod 18 can both generate a torsional moment, the spring cylinder 5 generally presents a nonlinear stiffness output. In this way, the pantograph head can match the working condition during high-speed operation, and the pantograph-catenary following property during high-speed operation is improved. Under a large load, the spring cylinder 5 provides a large stiffness, so as to output a large torsional force to respond to the working condition of a large load impact. Under normal circumstances, the stiffness of the spring 19 responds to the load fluctuation of the normal operation working condition.

[0056] Based on the above embodiment, the swing arm 23 is connected to the middle position along the length of the rotating shaft 22. There are two torsion structures, and the two torsion structures are symmetrically arranged about the middle section of the rotating shaft 22. The symmetrically distributed spring cylinders 5, with their symmetrical arrangement of double torsion springs, make the spring cylinders 5 compact, rationally laid out, and evenly stressed.

[0057] Furthermore, when one spring 19 fails, it does not affect the use of the other spring 19, reducing the risk of pantograph failure due to the failure of a single spring 19 and improving the reliability of the pantograph.

[0058] In one specific embodiment, the first connecting assembly includes a connector 2, a first connecting seat 3, and a first pin 4 fixed to the lower surface of the single-board bow head 1. The second connecting assembly includes a second connecting seat 12 and a second pin. One end of the first connecting seat 3 is rotatably connected to the connector 2, and the other end is rotatably connected to one of the spring cylinders 5 through the first pin 4. One end of the second connecting seat 12 is rotatably connected to the single-board bow head 1, and the other end is rotatably connected to another spring cylinder 5 through the second pin 5.

[0059] In actual use, when the skateboard presses down and the swing arm 23 rotates, the horizontal displacement of the connection between the swing arm 23 and the first connecting seat 3 and the second connecting seat 12 and the axis of the spring cylinder 5 increases. This causes the second connecting seat 12 and the single skateboard bow 1 to deviate horizontally. The first connecting seat 3 at the movable end rotates along the connecting shaft 7 of the swing arm 23 on the left side of the spring cylinder 5, which compensates for the horizontal deviation caused by the rotation of the single skateboard bow 1 and the swing arm 23, allowing the single skateboard bow 1 to move downward.

[0060] Furthermore, in order to reduce weight, the snap-fit ​​component 16, the fixing component 17, the bearing seat 21, the rotating shaft 22, the cylindrical connecting seat 15, the swing arm 23, the first connecting seat 3, the connecting component 2, and the second connecting seat can all be made of aluminum alloy. While meeting the structural strength requirements, the overall weight is kept at a low level, thereby improving the following performance and dynamic response of the bow head.

[0061] like Figure 1 As shown, the cylindrical connecting seat 15 of the spring cylinder 5 is fixedly connected to the connecting shaft 7 by the pressure plate 6. The pressure plate 6 is provided with a second clamping screw 10 to lock the connecting shaft 7. The other end of the connecting shaft 7 is fixed to the connecting plate 8. The connecting plate 8 uses a long connecting block to fix and press the connecting shaft 7, and is tightened with four first clamping screws 9 to prevent the connecting shaft 7 from rotating, so that the spring cylinder 5 always remains in a horizontal state.

[0062] In addition to the pantograph head device described above, the present invention also provides a rail vehicle including the pantograph head device disclosed in the above embodiments. The structure of other parts of the rail vehicle is described in the prior art and will not be repeated here.

[0063] The various embodiments are described in the specification by way of progression, each building on the last to facilitate ease of understanding. It should be apparent to those skilled in the art that the various embodiments described are not mutually exclusive, but that selected features of each embodiment can be mixed and matched to provide other embodiments not explicitly described. Any combination of the embodiments described is within the scope of the present invention, which is not limited to the embodiments described.

[0064] The pantograph head device and the rail vehicle are described in detail above. The principles and implementation manners of the present application are described by applying specific examples in the present article. The above description of the embodiments is only used to help understand the method of the present application and its core idea. It should be pointed out that, for those skilled in the art, some improvements and modifications can be made to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A pantograph head device, characterized by, The utility model relates to a single slide plate bow head (1) is provided with first connecting assembly and second connecting assembly in the inside surface, two spring barrels (5) are symmetrically arranged about the middle section of single slide plate bow head (1), one of two spring barrels (5) is connected to single slide plate bow head (1) through first connecting assembly, another of two spring barrels (5) is connected to single slide plate bow head (1) through second connecting assembly, connecting shaft (7) is fixedly connected through connecting shaft (7) to two spring barrels (5), and the length direction of two spring barrels (5) is perpendicular to the extension direction of single slide plate bow head (1), air current flows along the length direction of spring barrel (5), the shell assembly of spring barrel (5) includes the internal component, the outer surface of shell assembly is streamline, and shell assembly completely wraps internal component, the internal component includes pivot (22) and torsion structure, pivot (22) is fixedly provided with swing arm (23) for rotatingly connected with first connecting assembly or second connecting assembly, and the rotation axis of swing arm (23) relative to first connecting assembly or second connecting assembly is parallel to pivot (22), the torsion structure includes fixed part (17) rotatable relative to pivot (22), spring (19) is sleeved on the outer periphery of pivot (22), and one end of spring (19) is fixedly arranged on pivot (22), and the other end is fixedly arranged on fixed part (17), the torsion structure further includes at least two limit screws (20) and torsion rod (18) fixedly arranged on pivot (22), limit screw (20) is arranged in the radial direction of pivot (22) and protrudes, one end of torsion rod (18) is fixedly arranged on fixed part (17), and the other end is located between two limit screws (20) and is arranged in the gap with limit screw (20), the first connecting assembly includes connecting piece (2) fixedly arranged on the lower surface of single slide plate bow head (1), first connecting seat (3) and first pin shaft (4), and the second connecting assembly includes second connecting seat (12) and second pin shaft, one end of first connecting seat (3) is rotatably connected with connecting piece (2), and the other end is rotatably connected with one of spring barrel (5) through first pin shaft (4), one end of second connecting seat (12) is rotatably connected with single slide plate bow head (1), and the other end is rotatably connected with another spring barrel (5) through second pin shaft, the shell assembly includes main body structure (14) that is cylindrical tubular structure, and the conical or semispherical shell of two guide vanes (13) is arranged on both ends of main body structure (14), the torsion structure includes clamping part (16) fixedly arranged on pivot (22), fixed part (17) is provided with limiting protrusion for limiting the rotation angle of pivot (22), when clamping part (16) contacts with fixed part (17), pivot (22) stops rotating. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. Pantograph head device according to claim 1, characterized in that ​ ​ ​ 3. The pantograph head device of claim 1, wherein ​ 4. Pantograph head arrangement according to any one of claims 1-3, characterized in that The swing arm (23) is connected to the middle position of the length direction of the rotating shaft (22), the number of the torsion structures is two, and the two torsion structures are symmetrically arranged about the middle section of the rotating shaft (22).

5. The pantograph head device of claim 3, wherein The first connecting seat (3), the second connecting seat (12), the connecting piece (2), the clamping piece (16), the fixing piece (17), the rotating shaft (22) and the swing arm (23) are all made of aluminum alloy.

6. A rail vehicle, characterized by A pantograph head device comprising the pantograph head device according to any one of claims 1-5.

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