A locomotive pantograph valve plate structure

Abstract

This utility model relates to the technical field of pantograph structure for AC locomotives, and provides a pantograph valve plate structure, including a hollow flow channel integrated plate. An air source processing module, a pantograph lifting control module, and an ADD protection module are sequentially mounted on the top of the hollow flow channel integrated plate. This utility model can, depending on the temperature, activate a micro air pump to filter impurities through an air intake filter and then deliver air to a mesh heating wire inside the guide housing. The heated air enters a serpentine heat exchange tube assembly in the mounting base, where heat conduction through the tube walls heats the hollow flow channel integrated plate and the module above it. Furthermore, when the mesh heating wire is de-energized, the air guiding process is repeated, removing heat from the hollow flow channel integrated plate and module, achieving heat dissipation and protection. Furthermore, the bidirectional temperature regulation function allows the valve plate structure to operate normally in extreme temperature environments, solving the problems of air path icing in cold regions and valve failure in high-temperature regions.

Description

Technical Field

[0001] This utility model relates to the technical field of pantograph structure for AC locomotives, and in particular to a pantograph valve plate structure for locomotives. Background Technology

[0002] An AC locomotive is a railway locomotive that uses single-phase AC power as its power source. It can convert the high-voltage AC power input from the overhead contact line into an electrical energy form suitable for the operation of the traction motor. The pantograph is one of the key components of the AC locomotive's electrical system, and the pantograph valve plate on it is the core component of the pantograph pneumatic control system. It is usually installed in the locomotive's mechanical room or electrical cabinet and is connected to the pantograph on the roof through a high-voltage insulated hose. It plays a role in precisely controlling the pantograph's raising and lowering movements, adjusting the pantograph-cab contact pressure, and realizing fault protection functions. For example, patent CN205523723U discloses an integrated air circuit module for pantograph lifting control in rail transit. This module includes an integrated valve plate with a gas channel and multiple cavities. The gas channel connects the cavities to components mounted on them. It integrates a first filter, a solenoid valve, a pantograph lifting one-way throttle valve, a pantograph lowering one-way throttle valve, and a second filter cavity, all connected in series via the gas channel. The gas outlet of the pantograph lifting one-way throttle valve cavity is connected to the gas inlet of the pantograph lowering one-way throttle valve cavity via a pressure regulating valve, forming a complete pantograph grid contact lifting control air circuit. This integrated air circuit module for pantograph lifting control in rail transit, by comprehensively considering the working principle and structure of the electric locomotive's valve plate during the design phase, manufactures it as a universal module, ensuring the structural stability of the valve plate and the airtightness of the connections between various components. This results in higher reliability and safer operation of the pantograph control air circuit. Although the aforementioned integrated air circuit module for pantograph lifting control in rail transit is designed by comprehensively considering the working principle and structure of the electric locomotive's air valve plate, making it a universal module, thus ensuring the structural stability of the air valve plate and the airtightness of the connections between various components, making the pantograph control air circuit more reliable and the operation control safer, it does not have any protective components for high and low temperature environments. This makes the valve components prone to icing failure in cold environments and valve failure in high-temperature environments, resulting in poor applicability. Therefore, it is necessary to design a pantograph valve plate structure for locomotives. Utility Model Content

[0003] The purpose of this utility model is to provide a pantograph valve plate structure for locomotives, in order to solve the defect of poor applicability caused by the lack of a bidirectional temperature regulation mechanism in the use of existing pantograph valve plate structures for locomotives.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a pantograph valve plate structure for locomotives, comprising a hollow flow channel integrated plate; The top of the hollow flow channel integrated plate is sequentially fitted with an air source processing module, a lifting bow control module, and an ADD protection module, and a buffer fixing component is installed at the edge of the top of the hollow flow channel integrated plate. The bottom of the hollow flow channel integrated plate is equipped with a bidirectional temperature-regulating protection structure, which includes an assembly base fixed to the bottom of the hollow flow channel integrated plate. The bottom of the assembly base is provided with a serpentine heat exchange tube assembly, and a miniature air pump is installed on the outer wall of the assembly base. A flow guide shell is connected between the output end of the micro air pump and the serpentine heat exchange tube assembly, and a mesh heating wire is installed inside the flow guide shell. An air inlet filter is threadedly connected to the input end of the micro air pump, and an air outlet filter is provided at the output end of the serpentine heat exchange tube assembly.

[0005] Furthermore, rubber positioning posts are evenly arranged at the bottom edges of the air source processing module, the lifting bow control module, and the ADD protection module, and positioning slots that engage with the rubber positioning posts are provided on the hollow flow channel integrated plate.

[0006] Furthermore, the bottom of the air source processing module, the lifting pantograph control module, and the ADD protection module are all evenly connected with connecting pipe fittings, and the hollow flow channel integrated plate is provided with docking ports that match the connecting pipe fittings.

[0007] Furthermore, both the outer wall of the connecting pipe and the inner wall of the mating socket are provided with silicone sealing rings.

[0008] Furthermore, the buffer fixing assembly includes an aluminum alloy outer frame skeleton fixed to the top edge of the hollow flow channel integrated plate, and the inner sidewall of the aluminum alloy outer frame skeleton is provided with an inner explosion-proof airbag layer.

[0009] Furthermore, the inner sidewall of the inner explosion-proof airbag layer is uniformly connected with corrugated airbag tubes, and the outer sidewalls of the air source processing module, the lifting pantograph control module, and the ADD protection module are all provided with locking holes that engage with the corrugated airbag tubes.

[0010] Furthermore, the outer wall of the aluminum alloy outer frame is fixed with a reserved air valve that communicates with the inner explosion-proof airbag layer, and the corrugated airbag tube is connected to the interior of the inner explosion-proof airbag layer.

[0011] Furthermore, screw holes are provided at all four corners of the assembly base, and a temperature sensor is installed inside the hollow flow channel integrated plate.

[0012] The advantages of the pantograph valve plate structure for locomotives provided by this utility model are as follows: By installing a bidirectional temperature-regulating protection structure, the temperature sensor detects the internal temperature of the hollow flow channel integrated plate. A micro air pump is activated, and the air is filtered through the intake filter and then sent into the guide housing. The mesh heating wire inside the guide housing is energized to heat the air. The hot air enters the serpentine heat exchange tube group in the assembly base and heats the hollow flow channel integrated plate and the module above it through heat conduction through the tube wall. This is beneficial for the operation of the locomotive pantograph valve plate structure at low temperatures. Furthermore, when the mesh heating wire is de-energized, the above air guiding function is repeated to remove the heat from the hollow flow channel integrated plate and the module, thus achieving heat dissipation protection. In addition, the bidirectional temperature regulation function enables the valve plate structure to continue to work normally in extreme temperature environments, solving the problems of air circuit icing in cold regions and valve failure in high-temperature regions, thus broadening the applicable scenarios of the locomotive. By installing a pantograph control module, the traditional locomotive pantograph valve plate structure's air source processing, pantograph control, and safety protection functions are disassembled into independent air source processing, pantograph control, and ADD protection modules. These three functional modules are connected to the hollow flow channel integrated plate through rubber positioning pins and positioning slots, and vertical insertion and removal of connecting pipe fittings and docking ports. Individual faulty modules can be replaced without disassembling the entire valve plate. Furthermore, after the module assembly is completed, the reserved air valve on the outer wall of the buffer fixing component is opened to inflate it, causing the inner explosion-proof airbag layer to expand. The corrugated airbag tube on its inner side is embedded in the locking holes on the outer walls of the air source processing module, pantograph control module, and ADD protection module to achieve horizontal locking and fixing. The elastic deformation of the inner explosion-proof airbag layer buffers vibration, thus providing a buffer protection effect for the module structure. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the gas source processing module of this utility model; Figure 3 This is a three-dimensional structural diagram of the hollow flow channel integrated plate of this utility model. Figure 4 This is a three-dimensional cross-sectional schematic diagram of the bidirectional temperature-regulating protective structure of this utility model. Figure 5 This is a three-dimensional structural diagram of the buffer fixing component of this utility model.

[0014] The following are the annotations in the diagram: 1. Gas source processing module; 2. Lifting pantograph control module; 3. ADD protection module; 4. Two-way temperature-adjustable protection structure; 401. Outlet filter tube; 402. Miniature air pump; 403. Assembly base; 404. Serpentine heat exchange tube assembly; 405. Mesh heating wire; 406. Flow guide shell; 407. Inlet filter cartridge; 5. Buffer fixing assembly; 501. Aluminum alloy outer frame; 502. Corrugated airbag tube; 503. Inner explosion-proof airbag layer; 504. Reserved air valve; 6. Rubber positioning pin; 7. Connecting pipe fitting; 8. Silicone sealing ring; 9. Hollow flow channel integrated plate; 10. Connecting socket; 11. Positioning slot; 12. Locking hole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figures 1-5 The present invention provides a locomotive pantograph valve plate structure, including a hollow flow channel integrated plate 9.

[0017] Reference Figures 1-4 The top of the hollow flow channel integrated plate 9 is sequentially fitted with an air source processing module 1, a lifting bow control module 2, and an ADD protection module 3, and a buffer fixing component 5 is installed at the edge of the top of the hollow flow channel integrated plate 9. The bottom of the hollow flow channel integrated plate 9 is equipped with a bidirectional temperature-regulating protection structure 4, and the bidirectional temperature-regulating protection structure 4 includes an assembly base 403 fixed to the bottom of the hollow flow channel integrated plate 9. The bottom of the assembly base 403 is provided with a serpentine heat exchange tube group 404, and a micro air pump 402 is installed on the outer wall of the assembly base 403. A flow guide housing 406 is connected between the output end of the micro air pump 402 and the serpentine heat exchange tube assembly 404, and a mesh heating wire 405 is installed inside the flow guide housing 406. An air inlet filter 407 is threadedly connected to the input end of the micro air pump 402, and an air outlet filter 401 is provided at the output end of the serpentine heat exchange tube assembly 404. Screw holes are provided at the four corners of the mounting base 403, and a temperature sensor is installed inside the hollow flow channel integrated plate 9. Rubber positioning pins 6 are evenly arranged at the bottom edges of the air source processing module 1, the lifting pantograph control module 2 and the ADD protection module 3, and the hollow flow channel integrated plate 9 is provided with positioning slots 11 that engage with the rubber positioning pins 6. The bottom of the air source processing module 1, the lifting pantograph control module 2, and the ADD protection module 3 are all evenly connected with connecting pipe fittings 7, and the hollow flow channel integrated plate 9 is provided with a docking port 10 that matches the connecting pipe fittings 7.

[0018] When an external power supply is connected, and the temperature sensor detects that the internal temperature of the hollow flow channel integrated plate 9 is lower than the safety threshold, the bidirectional temperature-regulating protection structure 4 is activated. The micro air pump 402 draws in air from the outside, filters impurities through the intake filter cartridge 407, and then sends it into the guide housing 406. The mesh heating wire 405 inside the guide housing 406 is energized to heat the air. The hot air enters the serpentine heat exchange tube group 404 in the assembly base 403, and heats the hollow flow channel integrated plate 9 and the module above it through heat conduction through the tube wall. Finally, the hot air is discharged through the exhaust filter tube 401, which helps prevent the air passage from freezing and blocking, enabling the locomotive pantograph valve plate structure to achieve low-temperature resistance. In terms of performance, when the temperature sensor detects that the temperature inside the hollow flow channel integrated plate 9 is higher than the safety threshold, the mesh heating wire 405 is de-energized, and the micro air pump 402 continuously delivers room temperature air. The heat is carried away by the serpentine heat exchange tube group 404, thus achieving cooling and preventing valve failure due to high temperature. This achieves heat dissipation protection. Furthermore, by utilizing the bidirectional temperature-regulating protection structure 4, the valve plate structure can still work normally in extreme temperature environments through the bidirectional adjustment of heating by the mesh heating wire 405 and heat dissipation by room temperature air. This solves the problems of air circuit icing in cold regions and valve failure in high-temperature regions, thus broadening the applicable scenarios of the locomotive.

[0019] In use, the traditional locomotive pantograph valve plate structure's air source processing, pantograph lifting control, and safety protection functions are disassembled into independent air source processing module 1, pantograph lifting control module 2, and ADD protection module 3. These three functional modules are connected to the hollow flow channel integrated plate 9 by rubber positioning pins 6 and positioning slots 11, and vertical insertion and removal of connecting pipe parts 7 and docking sockets 10. With independent wiring and connecting pipes between modules, individual faulty modules can be replaced without disassembling the entire valve plate, reducing maintenance costs.

[0020] Reference Figures 1-5 Silicone sealing rings 8 are provided on the outer side wall of the connector 7 and the inner side wall of the mating socket 10. The buffer fixing component 5 includes an aluminum alloy outer frame 501 fixed to the top edge of the hollow flow channel integrated plate 9, and the inner sidewall of the aluminum alloy outer frame 501 is provided with an inner explosion-proof airbag layer 503. The inner wall of the inner explosion-proof airbag layer 503 is uniformly connected with corrugated airbag tubes 502. The outer walls of the air source processing module 1, the lifting pantograph control module 2 and the ADD protection module 3 are all provided with locking holes 12 that engage with the corrugated airbag tubes 502. The outer wall of the aluminum alloy outer frame 501 is fixed with a reserved air valve 504 that communicates with the inner explosion-proof airbag layer 503, and the corrugated airbag tube 502 is connected to the interior of the inner explosion-proof airbag layer 503.

[0021] In operation, the compressed air from the locomotive's main air reservoir first enters the air source treatment module 1. After impurity filtration and initial pressure stabilization, it connects to the docking port 10 of the hollow flow channel integrated plate 9 through the connecting pipe 7 at the bottom of the module. During this process, the silicone sealing ring 8 on the inner wall of the connecting pipe 7 and the docking port 10 achieves air circuit sealing to prevent leakage. The pre-treated compressed air is then transported to the pantograph lifting control module 2 through the internal flow channel of the hollow flow channel integrated plate 9. The module controls the airflow interruption and flow rate through built-in solenoid valves and throttle valves, thereby driving the pantograph to complete the pantograph lifting action. Specifically, the airflow fills the pantograph airbag to achieve the pantograph lifting action, and the gas in the pantograph airbag is discharged to achieve the pantograph lowering action, thus meeting the locomotive's power demand. At the same time, if the pantograph experiences faults such as carbon plate damage or air circuit leakage during pantograph lifting operation, the ADD protection module 3 monitors the air circuit pressure in real time and triggers the internal quick exhaust valve to quickly empty the pressure of the pantograph airbag through the flow channel of the hollow flow channel integrated plate 9, achieving emergency pantograph lowering and avoiding damage to the pantograph catenary.

[0022] In use, after assembling the air source processing module 1, the lifting bow control module 2, and the ADD protection module 3 on the hollow flow channel integrated plate 9, the reserved air valve 504 on the outer wall of the buffer fixing component 5 is opened to inflate the inner explosion-proof airbag layer 503, and the corrugated airbag tube 502 on its inner side is embedded in the locking hole 12 on the outer wall of the air source processing module 1, the lifting bow control module 2, and the ADD protection module 3 to achieve horizontal locking and fixing. Moreover, by utilizing this elastic locking structure, the elastic deformation of the inner explosion-proof airbag layer 503 buffers vibration, thereby improving the buffer protection effect on the module structure.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A pantograph valve plate structure for a locomotive, comprising a hollow flow channel integrated plate (9); Its features are: The top of the hollow flow channel integrated plate (9) is sequentially fitted with an air source processing module (1), a lifting bow control module (2) and an ADD protection module (3), and a buffer fixing component (5) is installed at the edge of the top of the hollow flow channel integrated plate (9). The bottom of the hollow flow channel integrated plate (9) is equipped with a bidirectional temperature-regulating protection structure (4), and the bidirectional temperature-regulating protection structure (4) includes an assembly base (403) fixed to the bottom of the hollow flow channel integrated plate (9). The bottom end of the assembly base (403) is provided with a serpentine heat exchange tube group (404), and a micro air pump (402) is installed on the outer wall of the assembly base (403). A flow guide shell (406) is connected between the output end of the micro air pump (402) and the serpentine heat exchange tube assembly (404), and a mesh heating wire (405) is installed inside the flow guide shell (406). An air inlet filter (407) is threadedly connected to the input end of the micro air pump (402), and an air outlet filter (401) is provided at the output end of the serpentine heat exchange tube assembly (404).

2. The pantograph valve plate structure for a locomotive according to claim 1, characterized in that: Rubber positioning pins (6) are evenly arranged at the bottom edges of the gas source processing module (1), the lifting bow control module (2) and the ADD protection module (3), and a positioning slot (11) that engages with the rubber positioning pins (6) is provided on the hollow flow channel integrated plate (9).

3. The locomotive pantograph valve plate structure according to claim 1, characterized in that: The bottom of the gas source processing module (1), the lifting bow control module (2) and the ADD protection module (3) are all uniformly connected with connecting pipe fittings (7), and the hollow flow channel integrated plate (9) is provided with a docking port (10) that matches the connecting pipe fittings (7).

4. The locomotive pantograph valve plate structure according to claim 3, characterized in that: The outer wall of the connecting pipe fitting (7) and the inner wall of the mating socket (10) are both provided with silicone sealing rings (8).

5. The pantograph valve plate structure for a locomotive according to claim 1, characterized in that: The buffer fixing component (5) includes an aluminum alloy outer frame (501) fixed at the top edge of the hollow flow channel integrated plate (9), and the inner sidewall of the aluminum alloy outer frame (501) is provided with an inner explosion-proof airbag layer (503).

6. The locomotive pantograph valve plate structure according to claim 5, characterized in that: The inner sidewall of the inner explosion-proof airbag layer (503) is uniformly connected with corrugated airbag tubes (502), and the outer sidewalls of the air source processing module (1), the lifting bow control module (2) and the ADD protection module (3) are all provided with locking holes (12) that engage with the corrugated airbag tubes (502).

7. The pantograph valve plate structure for a locomotive according to claim 6, characterized in that: The outer wall of the aluminum alloy outer frame (501) is fixed with a reserved air valve (504) that communicates with the inner explosion-proof airbag layer (503), and the corrugated airbag tube (502) is connected to the interior of the inner explosion-proof airbag layer (503).

8. The pantograph valve plate structure for a locomotive according to claim 1, characterized in that: The four corners of the assembly base (403) are provided with screw holes, and the hollow flow channel integrated plate (9) is equipped with a temperature sensor.

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