High-strength supporting anti-drag type reversing high-speed train pantograph

Abstract

The invention relates to the technical field of train pantographs, and discloses a high-strength supporting anti-drag reversing type high-speed train pantograph which comprises a carbon sliding plate pantograph head, a connecting plate and a reversing mechanism, the reversing mechanism comprises a base, a groove is formed in the top of the base, a reversing air cylinder rod is installed on the edge of one end of the groove, and a reversing air cylinder is installed on the reversing air cylinder rod; the inner side of the groove is slidably connected with two pulling plates, the close sides of the two pulling plates are fixedly connected with two pulling columns, the output end of a reversing air cylinder rod is fixedly connected with the outer side of one pulling plate, the inner sides of the two pulling plates are rotatably connected with a disc base, and the bottom of the disc base is fixedly connected with an L-shaped column. Under the cooperation of a plurality of structures, the pantograph can be reversed according to the advancing direction of a high-speed train, the pantograph is always kept in an opening state to be in contact with a contact net no matter which direction the train travels, the aerodynamic performance of the pantograph during high-speed running is improved, and the optimal pantograph-catenary current collection requirement is met.

Description

Technical Field

[0001] The present invention relates to the technical field of train pantographs, in particular to a high-strength support and drag-reducing reversing pantograph for high-speed trains. Background Art

[0002] With the rapid development of high-speed rail, its convenience, speed, comfort, and safety are increasingly gaining popularity. However, as high-speed rail speeds continue to increase, its aerodynamic and noise issues are becoming increasingly important. The noise generated by high-speed trains includes electrical noise, wheel-rail noise, and aerodynamic noise. Aerodynamic noise is caused by the interaction between various external parts of the train body and the air during operation. Wheel-rail noise increases with the square of the train speed, while aerodynamic noise increases with increasing speed. On high-speed railways above 300 km / h, air resistance accounts for 80% of the total resistance. As speed increases, aerodynamic noise surpasses wheel-rail noise to become the most important noise source during high-speed rail operation.

[0003] As train speeds continue to increase, wheel-rail noise has become a secondary factor in high-speed trains, while aerodynamic noise has become increasingly prominent. Pantograph-catenary aerodynamic noise is a significant source of this noise, transmitting it to the interior of the train, significantly impacting passenger comfort and vehicle comfort. During high-speed travel, the pantograph arm connecting rod experiences periodic eddy current shunting due to high-speed flow, generating significant aerodynamic noise.

[0004] Currently, conventional methods for reducing pantograph air resistance involve reducing the number of pantograph members and installing pantograph shrouds to reduce the aerodynamic noise generated by the pantograph. However, reducing the number of pantograph members can easily lead to insufficient power supply within the train, while installing shrouds complicates pantograph maintenance and has limited noise reduction effectiveness. Therefore, the present invention provides a high-strength, drag-reducing, reversing pantograph for high-speed trains to address the shortcomings of existing technologies. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a high-strength support and drag-reducing reversing pantograph for high-speed trains, which solves the problems mentioned in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a high-strength support and drag-reducing reversing high-speed train pantograph, comprising a carbon slide bow head, a connecting plate and a reversing mechanism, the reversing mechanism comprising a base, a groove being provided on the top of the base, and a reversing cylinder rod being installed at the edge of one end of the groove, two pull plates being slidably connected to the inner side of the groove, two pull columns being fixedly connected to the adjacent sides of the two pull plates, the output end of the reversing cylinder rod being fixedly connected to the outer side of one of the pull plates, the inner sides of the two pull plates being rotatably connected to a disc seat, the bottom of the disc seat being fixedly connected to an L-shaped column, a guide groove being provided on the inner side of the groove, and one end of the L-shaped column being slidably connected to the inner side of the guide groove.

[0007] Preferably, the outer side of the pull plate is slidably connected to the top of the base, the bottom of the base is fixedly connected to four insulators, and the bottoms of the insulators are fixedly connected to the top of the train.

[0008] Preferably, a servo motor is installed on the top of the disc seat, and the output end of the servo motor is fixedly connected to a lifting worm gear.

[0009] Preferably, the top of the disc seat is fixedly connected to a mounting seat, and the inside of the mounting seat is rotatably connected to a bottom pin 1, the outer side of the bottom pin 1 is fixedly connected to a lifting worm gear, and the outer side of the lifting worm gear is engaged with the outer side of the lifting worm gear.

[0010] Preferably, the disc seat is fixedly connected with two fixing blocks, and the inner sides of the two fixing blocks are rotatably connected with a second bottom pin and a lower pull rod respectively.

[0011] Preferably, the adjacent ends of the bottom pin 1 and the bottom pin 2 are fixedly connected with a lower arm rod, and the lower pull rod is located inside the lower arm rod.

[0012] Preferably, the outer sides of the carbon skateboard bow head are rotatably connected to an upper pull rod and an upper arm rod, and the upper pull rod is located inside the upper arm rod.

[0013] Preferably, the inner side of the connecting plate is rotatably connected to two connecting pins, and the outer sides of the two connecting pins are fixedly connected to one end of the upper arm and the lower arm respectively.

[0014] Preferably, one end of the upper pull rod and the lower pull rod are both rotatably connected to the outer side of the connecting plate.

[0015] Preferably, two cylindrical gears are fixedly connected to the outer side of the connecting pin, and the two upper cylindrical gears are meshed with the two lower cylindrical gears.

[0016] The present invention provides a high-strength support and drag-reducing reversing pantograph for high-speed trains. It has the following beneficial effects:

[0017] 1. Through the coordinated cooperation of multiple structures, the present invention enables the pantograph to be reversed according to the direction of travel of the high-speed train, so that no matter which direction the train travels, the pantograph always remains in an open state and in contact with the contact network, thereby improving the aerodynamic performance of the pantograph when running at high speed and meeting the optimal pantograph-catenary current collection requirements.

[0018] 2. While meeting the normal functions of the pantograph, the present invention has a more compact structure, reduces the number of exposed pantograph rods, can effectively reduce the aerodynamic resistance and noise caused by the traditional pantograph as a whole, and has a simple manufacturing process and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A perspective view of the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 It is a structural schematic diagram of the base of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the pull plate of the present invention;

[0023] Figure 5 It is a structural schematic diagram of the L-shaped column of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the connecting plate of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the connecting pin of the present invention;

[0026] Figure 8 A top view of the present invention;

[0027] Figure 9 It is a front view of the present invention;

[0028] Figure 10 It is a side view of the present invention.

[0029] Among them, 1. Carbon slide bow head; 2. Upper pull rod; 3. Upper arm rod; 4. Lower pull rod; 5. Lower arm rod; 6. Disc seat; 7. Reversing cylinder rod; 8. Bow lifting worm; 9. Bow lifting worm gear; 10. Connecting plate; 11. Connecting pin; 12. Cylindrical gear; 13. Bottom pin one; 14. Bottom pin two; 15. Servo motor; 16. Base; 17. Insulator; 18. Pull plate; 19. Pull column; 20. Guide groove; 21. L-shaped column. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Please see the attached Figure 1 -Attached Figure 10 An embodiment of the present invention provides a high-strength support and drag-reducing reversing pantograph for high-speed trains, comprising a carbon slide bow head 1, a connecting plate 10 and a reversing mechanism.

[0032] The reversing mechanism includes a base 16 with a groove at its top and a reversing cylinder rod 7 mounted at one end of the groove. The reversing cylinder rod 7 plays a key role in initiating the reversing operation, precisely outputting power in response to changes in the train's direction of travel. Two pull plates 18 are slidably connected to the inner side of the groove, and two pull posts 19 are fixedly connected to the adjacent sides of these pull plates 18. The output end of the reversing cylinder rod 7 is fixedly connected to the outer side of one of the pull plates 18. When the reversing cylinder rod 7 retracts or contracts, it pushes the connected pull plate 18 to slide within the groove, which in turn drives the other pull plate 18 to move synchronously via the pull post 19.

[0033] The disc seat 6 is rotatably connected to the inner sides of the two pull plates 18. An L-shaped post 21 is fixedly connected to the bottom of the disc seat 6. A guide groove 20 is defined within the inner side of the groove, and one end of the L-shaped post 21 is slidably connected to the inner side of the guide groove 20. As the pull plates 18 move, the disc seat 6 moves with it, and the L-shaped post 21 at its bottom slides along the guide groove 20. Because the disc seat 6 is located near one edge of the base 16, that is, near the edge of the train, when the L-shaped post 21 moves into the curved portion of the guide groove 20, the special shape of the guide groove 20 causes the disc seat 6 to rotate.

[0034] The outer side of the pull plate 18 is slidably connected to the top of the base 16. Four insulators 17 are fixedly connected to the bottom of the base 16. The bottom of the insulator 17 is fixedly connected to the top of the train, which plays a good insulating role and ensures the safety of the pantograph.

[0035] A servo motor 15 is mounted on the top of the disc seat 6. The output of the servo motor 15 is fixedly connected to the worm gear 8. When the servo motor 15 is activated, its output shaft rotates the worm gear 8. This rotation of the worm gear 8 is the initial power source for raising and lowering the carbon slide's bow head 1. A mounting base is fixedly connected to the top of the disc seat 6. The mounting base is internally rotatably connected to a bottom pin 13. The outer side of the bottom pin 13 is fixedly connected to the worm gear 9. The outer side of the worm gear 8 meshes with the outer side of the worm gear 9. Rotation of the worm gear 8 drives the meshed worm gear 9, which in turn drives rotation of the bottom pin 13.

[0036] The disc seat 6 is fixedly connected to two fixed blocks, the inner sides of which are rotatably connected to the second bottom pin 14 and the lower pull rod 4. The lower arm 5 is fixedly connected to the adjacent ends of the first bottom pin 13 and the second bottom pin 14, and the lower pull rod 4 is located inside the lower arm 5. When the first bottom pin 13 rotates, it drives the lower arm 5 connected to it to rotate around the second bottom pin 14, and the lower pull rod 4 also moves with the rotation of the lower arm 5.

[0037] The outer side of the carbon skateboard bow head 1 is rotatably connected to the upper pull rod 2 and the upper arm rod 3, with the upper pull rod 2 located inside the upper arm rod 3. The inner side of the connecting plate 10 is rotatably connected to two connecting pins 11. The outer sides of the two connecting pins 11 are fixedly connected to one end of the upper arm rod 3 and the lower arm rod 5, respectively. One end of the upper pull rod 2 and the lower pull rod 4 are both rotatably connected to the outer side of the connecting plate 10. When the bottom pin 13 drives the lower arm rod 5 to rotate, the lower arm rod 5 drives the upper arm rod 3 to rotate via the connecting pin 11. At the same time, the lower pull rod 4 drives the upper pull rod 2 to move via the connecting plate 10. With the cooperation of the two sets of cylindrical gears 12, the upper pull rod 2 and the upper arm rod 3 rotate in coordination, thereby achieving the lifting and lowering operation of the carbon skateboard bow head 1.

[0038] Two cylindrical gears 12 are fixedly connected to the outer side of the connecting pin 11. The upper two cylindrical gears 12 mesh with the lower two cylindrical gears 12. During the raising and lowering of the carbon slide bow head 1, the cylindrical gears 12 play a key transmission role, ensuring the coordinated movement of the upper pull rod 2, upper arm rod 3, lower pull rod 4 and lower arm rod 5. When the carbon skateboard bow head 1 rises, the reversing cylinder rod 7 is started to drive the pull plate 18 to move, thereby causing the disc seat 6 to move, and the L-shaped column 21 at its bottom will slide along the inner side of the guide groove 20. Since the position of the disc seat 6 is close to the edge of one side of the base 16, the position of the disc seat 6 is close to the edge of the train. Under the action of the cooperation between the L-shaped column 21 and the guide groove 20, when the L-shaped column 21 moves to the arc, the disc seat 6 will rotate, thereby causing the other overall structures on its top to rotate together. The carbon skateboard bow head 1 is approximately parallel to the contact network and is far away from the contact network. The carbon skateboard bow head 1 will not interfere with the contact network. At this time, the upper arm 3 and the lower arm 5 are on the same extension line, and the carbon skateboard bow head 1 will be at the highest point. At this time, the two sets of cylindrical gears 12 continue to rotate, causing the position of the carbon skateboard bow head 1 to begin to decline, thereby realizing the steering adjustment of the pantograph, thereby changing the opening direction of the carbon skateboard bow head 1.

[0039] Specifically, to ensure the structural strength of the new pantograph meets future service requirements, the new pantograph's geometric model was first imported into the STAR-CCM+ simulation software. The aerodynamic drag of each component of the structure at a train speed of 400 km / h was calculated and compared with the aerodynamic drag of a traditional pantograph at the same speed. The specific values ​​of the aerodynamic drag of each major component are shown in Table 1, and the specific material parameters of each component are shown in Table 2. The new pantograph's geometric model was then imported into the ANSYS Workbench simulation software to perform static strength calculations on the structure. Considering the ease of manufacturing and wide application of the new pantograph, the materials used for all pantograph components are the same as those used in traditional pantographs. As shown in Table 1, the total aerodynamic drag of the new pantograph is significantly reduced compared to the original pantograph, indicating that the new pantograph has better aerodynamic characteristics in terms of appearance than the traditional pantograph.

[0040] Table 1:

[0041]

[0042] Table 2:

[0043]

[0044] Under the combined action of the contact network and its own gravity, the maximum stress of the structure of the present invention is 717.33 MPa. The maximum stress occurs at the meshing position of the cylindrical gear 12. The minimum safety factor is 1.81. The stress of the main components of the pantograph is less than the allowable stress value of its material, and the safety factor meets the requirements. This shows that the static strength of the new structure meets the requirements under the combined action of the contact network and its own gravity.

[0045] Under simulated wind loads, the maximum stress in each component was 854.91 MPa, again occurring at the meshing point of cylindrical gear 12. The minimum safety factor was 1.52, indicating that the stress in each major component of the pantograph was significantly lower than the allowable stress of its material, thus meeting operational requirements.

[0046] To sum up, it is shown that the new pantograph structure has a structural strength that can ensure safety and reliability during use, regardless of whether the train is stationary and the pantograph needs to be raised to contact the contact network to power the train, or the train is running normally and the pantograph needs to continuously power the train.

[0047] Working principle: First, start the servo motor 15 to drive the bow lifting worm 8 to rotate, which will make the bow lifting worm gear 9 drive the bottom pin 13 to rotate, and then make the lower arm 5 and the lower pull rod 4 rotate, and with the cooperation of the two sets of cylindrical gears 12, make the upper pull rod 2 and the upper arm 3 rotate, so as to realize the lifting and lowering operation of the carbon slide bow head 1; then when the carbon slide bow head 1 rises, start the reversing cylinder rod 7 to drive the pull plate 18 to move, and then make the disc seat 6 move, and the L-shaped column 21 at the bottom will slide along the inner side of the guide groove 20. Since the position of the disc seat 6 is close to the edge of one side of the base 16, the position of the disc seat 6 is close to the edge of the train. Under the action of the L-shaped column 21 and the guide groove 20, when the L-shaped column 21 moves to the arc, the disc seat 6 will rotate, and then the other integral structures on its top will rotate together. The carbon skateboard bow head 1 is approximately parallel to the contact network and is far away from the contact network. The carbon skateboard bow head 1 will not interfere with the contact network. At this time, the upper arm 3 and the lower arm 5 are on the same extension line, and the carbon skateboard bow head 1 will be at the highest point. At this time, the two sets of cylindrical gears 12 continue to rotate, causing the position of the carbon skateboard bow head 1 to begin to drop, thereby realizing the steering adjustment of the pantograph, thereby changing the opening direction of the carbon skateboard bow head 1.

[0048] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A high-strength support and drag-reducing reversing pantograph for high-speed trains, characterized in that: The invention comprises a carbon slide bow head (1), a connecting plate (10) and a reversing mechanism, wherein the reversing mechanism comprises a base (16), a groove is provided on the top of the base (16), and a reversing cylinder rod (7) is installed at the edge of one end of the groove, two pull plates (18) are slidably connected to the inner side of the groove, two pull columns (19) are fixedly connected to the adjacent sides of the two pull plates (18), the output end of the reversing cylinder rod (7) is fixedly connected to the outer side of one of the pull plates (18), the inner sides of the two pull plates (18) are rotatably connected to a disc seat (6), the bottom of the disc seat (6) is fixedly connected to an L-shaped column (21), a guide groove (20) is provided on the inner side of the groove, and one end of the L-shaped column (21) is slidably connected to the inner side of the guide groove (20).

2. The high-strength support and drag-reducing reversing pantograph for high-speed train according to claim 1, characterized in that: The outer side of the pull plate (18) is slidably connected to the top of the base (16); the bottom of the base (16) is fixedly connected to four insulators (17); and the bottom of the insulators (17) is fixedly connected to the top of the train.

3. The high-strength support and drag-reducing reversing pantograph for high-speed train according to claim 2, characterized in that: A servo motor (15) is installed on the top of the disc seat (6), and the output end of the servo motor (15) is fixedly connected to the lifting worm (8).

4. The high-strength support and drag-reducing reversing pantograph for high-speed train according to claim 3, characterized in that: The top of the disc seat (6) is fixedly connected to a mounting seat, and the interior of the mounting seat is rotatably connected to a bottom pin 1 (13), the outer side of the bottom pin 1 (13) is fixedly connected to a bow-lifting worm gear (9), and the outer side of the bow-lifting worm (8) is meshed with the outer side of the bow-lifting worm gear (9).

5. The high-strength support and drag-reducing reversing pantograph for high-speed train according to claim 4, characterized in that: The disc seat (6) is fixedly connected with two fixed blocks, and the inner sides of the two fixed blocks are rotatably connected with a second bottom pin (14) and a lower pull rod (4).

6. The high-strength support and drag-reducing reversing pantograph for high-speed train according to claim 5, characterized in that: The adjacent ends of the bottom pin 1 (13) and the bottom pin 2 (14) are fixedly connected to a lower arm rod (5), and the lower pull rod (4) is located inside the lower arm rod (5).

7. The high-strength support and drag-reducing reversing pantograph for high-speed train according to claim 1, characterized in that: The outer sides of the carbon skateboard bow head (1) are rotatably connected to an upper pull rod (2) and an upper arm rod (3), respectively, and the upper pull rod (2) is located inside the upper arm rod (3).

8. The high-strength support and drag-reducing reversing pantograph for high-speed train according to claim 7, characterized in that: The inner side of the connecting plate (10) is rotatably connected to two connecting pins (11), and the outer sides of the two connecting pins (11) are fixedly connected to one end of the upper arm (3) and the lower arm (5), respectively.

9. The high-strength support and drag-reducing reversing pantograph for high-speed train according to claim 8, characterized in that: One end of the upper pull rod (2) and the lower pull rod (4) are both rotatably connected to the outer side of the connecting plate (10).

10. The high-strength support and drag-reducing reversing pantograph for high-speed train according to claim 9, characterized in that: Two cylindrical gears (12) are fixedly connected to the outer side of the connecting pin (11), and the two cylindrical gears (12) on the upper side are meshed with the two cylindrical gears (12) on the lower side.

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