Reversible high-speed train pantograph

Abstract

The utility model discloses a reversible high-speed train pantograph, which belongs to the technical field of electrified railway locomotives and adopts two parallelogram structures consisting of a carbon slide plate, an upper pull rod, an upper arm rod, a lower pull rod, a lower arm rod, a connecting plate, a connecting meshing gear, a bottom plate and the like. The novel pantograph is more compact in structure, the outer surface area in contact with air is reduced, and aerodynamic noise caused by the whole pantograph is reduced. A mechanism composed of a bottom plate, a reversing gear, a deep groove ball bearing, a reversing rack and the like can ensure that the pantograph is reversed according to the advancing direction of a high-speed train, so that the pantograph is always kept in an opening state no matter how the train runs, the aerodynamic performance of the pantograph during high-speed running is improved, and the optimal pantograph net current collection requirement is met. In addition, the novel structure and the reversing mechanism of the pantograph are high in reliability, simple in manufacturing process and easy to implement.

Description

Technical Field

[0001] The utility model relates to the technical field of electrified railway locomotives, in particular to a reversible pantograph for high-speed trains. Background Art

[0002] With the rapid development of high-speed rail construction in my country, the convenience, speed, comfort and safety of high-speed rail are increasingly favored by people. However, with the continuous increase in the speed of high-speed rail, its aerodynamics and noise problems have gradually become an issue that cannot be ignored. The noise caused by high-speed trains includes: electrical noise, wheel-rail noise and aerodynamic noise. When a high-speed train is running, aerodynamic noise is caused by the interaction between various parts on the outside of the car body and the air. Wheel-rail noise increases with the square of the speed, and aerodynamic noise increases with the increase of speed. In high-speed railways above 300 kilometers per hour, air resistance accounts for 80% of the total resistance, and with the increase of speed, aerodynamic noise has surpassed the wheel-rail noise source and is the most important noise source in high-speed rail operation.

[0003] As the speed of trains continues to increase, the mechanical noise of high-speed trains has become a secondary factor, while the problem of aerodynamic noise has become increasingly prominent. The pantograph aerodynamic noise is an important source of pantograph aerodynamic noise. The pantograph aerodynamic noise is transmitted to the interior of the carriage through the pantograph, which has a great impact on the comfort of passengers and vehicles inside the carriage. During high-speed driving, due to high-speed flow, the pantograph arm connecting rod will undergo periodic eddy current shunting, thereby generating large aerodynamic noise.

[0004] At present, the conventional method to reduce the air resistance of the pantograph is to reduce the number of pantograph poles and install a pantograph deflector to reduce the aerodynamic noise generated by the pantograph. However, the effect of conventional methods on noise reduction is limited. Summary of the invention

[0005] The utility model aims to provide a reversible high-speed train pantograph, wherein the open and closed states of the pantograph can be freely switched according to the traveling direction of the train. Since the eddy current intensity of the closed state of the pantograph is greater than that of the open state when the train is running normally, keeping the pantograph in the open state when the train is running can effectively reduce the aerodynamic noise of the high-speed pantograph.

[0006] The utility model is composed of a carbon slide plate 1, an upper pull rod 2, an upper arm rod 3, a lower pull rod 4, a lower arm rod 5, a bottom plate 6, a reversing cylinder rod 7, a bow raising cylinder rod 8, a connecting plate 9, a connecting pin 10, a connecting meshing gear 11, a bow raising gear 12, a bottom pin 13, a bottom plate rack 14, a bottom plate 15, a reversing gear 16, a deep groove ball bearing 17, a reversing rack 18, a bottom plate pull rod 19 and a control rod 20. These components cooperate with each other to complete the lifting and reversing functions of the pantograph.

[0007] The carbon slide plate 1, the upper pull rod 2, the upper arm rod 3, the lower pull rod 4, the lower arm rod 5, the connecting plate 9, the connecting pin 10, the connecting meshing gear 11, the bow lifting gear 12, the bottom pin 13, the bottom plate rack 14 and the bottom plate 15 form two parallelogram structures, so that the carbon slide plate 1 in the pantograph always remains parallel to the bottom plate 15 when lifting or lowering, thereby ensuring the normal operation of the pantograph.

[0008] Its working principle is: the connecting pin 10 connects the connecting meshing gear 11 with the lower arm 5 and the connecting meshing gear 11 with the upper arm 3 respectively using keys, so that when the lower arm rotates around the bottom pin 13, its connecting meshing gear 11 also has corresponding position and angle changes, thereby executing the pantograph raising and lowering operations.

[0009] The mechanism composed of the reversing cylinder rod 7, the base plate 15, the reversing gear 16, the deep groove ball bearing 17 and the reversing rack 18 completes the reversing operation of the pantograph through the mechanical transmission of the gear rack.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The pantograph can be reversed according to the direction of travel of the high-speed train, so that the pantograph always remains in an open state no matter how the train runs, improving the aerodynamic performance of the pantograph when running at high speed and meeting the optimal pantograph-net current collection requirements.

[0012] 2. The adoption of a new type of lifting pantograph structure not only meets the normal functions of the pantograph, but also makes the structure of the pantograph more compact, reduces the surface area in contact with the air, and reduces the aerodynamic noise caused by the pantograph as a whole.

[0013] 3. The new structure and commutation mechanism of the pantograph are highly reliable, with a simple manufacturing process and are easy to implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a disassembled view of the mechanical structure of the middle part of the pantograph of the utility model;

[0017] Figure 3 This is a disassembled view of the pantograph commutation mechanical structure of the utility model;

[0018] Figure 4 The pantograph reversing gear of the utility model cooperates with the notch of the bottom plate;

[0019] Figure 5This is the appearance of the rack of the pantograph bottom plate of the utility model;

[0020] Figure 6 This is a position diagram of the utility model when the pantograph is opened to the right and in a non-working (free) state;

[0021] Figure 7 This is a position diagram of the utility model when the pantograph is in the rightward working state;

[0022] Figure 8 This is a position diagram of the utility model when the pantograph is opened to the left and in a non-working (free) state;

[0023] Fig. 9 This is a position diagram of the utility model when the pantograph is in the leftward working state; DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments, which does not constitute a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0025] Example 1

[0026] A specific implementation of the utility model is: when the train stops at the starting station, the reversing cylinder rod 7 can be pushed by the airbag cylinder according to the direction of travel of the train, and the cylinder rod 7 continues to transmit power to the reversing rack 18. Under the joint action of the gear rack and the deep groove ball bearing 17, the reversing rack 18 drives the reversing gear 16 to rotate, and the bottom plate 15 and the reversing gear 16 are key-connected, so when the reversing gear rotates, the bottom plate also rotates. In order to ensure the accurate position of the pantograph during reversing, a notch is made between the bottom plate 6 and the reversing gear 16 directly below to ensure the accuracy and reliability of the pantograph during reversing. If the reversing is successful, it is only necessary to keep the stroke of the reversing cylinder rod 7 unchanged, so that the pantograph will not rotate freely during normal operation and the purpose of high reliability can be achieved.

[0027] When the pantograph reversing action is completed, another airbag cylinder pushes the pantograph raising cylinder rod 8 to move, and the pantograph raising cylinder rod 8 transmits power to the mechanism composed of two bottom plate tie rods 19 and two control rods 20, so that the bottom plate tie rod 19 moves along the direction of the control rod 20. When the bottom plate tie rod 19 moves to contact the bottom plate rack 14, the bottom plate tie rod 19 will transmit power to the bottom plate rack 14, and the bottom plate rack 14 will move accordingly. The bottom plate rack 14 and the pantograph raising gear 12 are matched with a gear rack, and the pantograph raising gear 12 will rotate with the movement of the rack 14. Because the pantograph raising gear 12 is key-connected to the lower arm 5, when the pantograph raising gear 12 rotates, the lower arm 5 will also rotate around the bottom pin 13 to complete the pantograph raising action of the lower arm 5. When the lower arm 5 rotates, the lower tie rod 4 will also rotate accordingly, always keeping parallel with the lower arm 5. At this time, the bottom plate 15, the lower pull rod 4, the lower arm 5 and the connecting plate 9 form a parallelogram structure, and the connecting plate 9 always remains parallel to the bottom plate 15. The carbon slide plate 1, the upper pull rod 2, the upper arm 3 and the connecting plate 9 in the upper part of the pantograph form a parallelogram structure to keep the carbon slide plate and the connecting plate always parallel. The lower arm 5 is key-connected with the second connecting meshing gear 11 for the purpose of transmitting power, and the upper arm 3 is also key-connected with the first connecting meshing gear 11 for the purpose of allowing the upper arm 3 to receive the power transmitted by the second connecting meshing gear 11. The principle of this partial power transmission is as follows: when the lower arm 5 rotates around the bottom pin 13, the second connecting meshing gear 11 and the connecting plate 9 have relative rotation, which means that part of the power in the lower arm 5 is transmitted to the second connecting meshing gear 11. At this time, the first connecting meshing gear 11 meshed with the second connecting meshing gear 11 has power transmission, so that the upper part of the pantograph completes the bow raising action. When the pantograph needs to work continuously and stably, it is only necessary to keep the stroke of the pantograph raising cylinder rod 8 unchanged.

[0028] When the pantograph has completed its work and needs to be lowered, it only needs to discharge the compressed gas in the airbag cylinder through the damping hole to let it fall freely. The utility model invention makes some improvements to the bottom plate rack 14, so that it can limit the degree of the pantograph's descent and ensure that the pantograph does not interfere with non-related parts during reversing.

Claims

1. A reversible high-speed train pantograph, comprising a carbon slide plate (1), an upper pull rod (2), an upper arm rod (3), a lower pull rod (4), a lower arm rod (5), a bottom plate (6), a reversing cylinder rod (7), a bow raising cylinder rod (8), a connecting plate (9), a connecting pin (10), a connecting meshing gear (11), a bow raising gear (12), a bottom pin (13), a bottom plate rack (14), a bottom plate (15), a reversing gear (16), a deep groove ball bearing (17), a reversing rack (18), a bottom plate pull rod (19) and a control rod (20), characterized in that Two parallelogram structures are formed by a carbon slide plate (1), an upper pull rod (2), an upper arm rod (3), a lower pull rod (4), a lower arm rod (5), a connecting plate (9), a connecting pin (10), a connecting meshing gear (11), a bow lifting gear (12), a bottom pin (13), a bottom plate rack (14) and a bottom plate (15).

2. The reversible high-speed train pantograph according to claim 1 is characterized in that The reversing mechanism is composed of a reversing cylinder rod (7), a base plate (15), a reversing gear (16), a deep groove ball bearing (17) and a reversing rack (18).

3. The reversible high-speed train pantograph according to claim 1 is characterized in that The reversing gear (16) is matched with the notch between the bottom plate (6).

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