Urban rail transit vehicle frame pressure maintaining and leakage measuring device

Abstract

The utility model discloses a kind of urban rail transit vehicle framework pressure keeping and leakage measuring device, for connecting the gas source connection of gas source is installed above gas source switch, gas source switch is installed on connecting seat through conversion joint, connecting seat is connected with bogie framework.The utility model is characterized by: it realizes to bogie framework additional air chamber inflation, keep certain pressure value, leakage measurement function, and with portability, convenient transportation, storage and maintenance.

Description

Technical Field

[0001] This utility model relates to an airtightness measuring device, and more particularly to a device for maintaining the pressure and measuring the leakage of urban rail transit vehicle frame, belonging to the field of urban rail transit. Background Technology

[0002] The bogie is a crucial component of rail vehicles, serving functions such as supporting the car body, transmitting loads, mitigating wheel-rail impacts, and implementing braking. The bogie frame is a key component, directly affecting the vehicle's operational stability, comfort, and safety. During frame maintenance, a pressure test is required for its auxiliary air chambers to ensure proper sealing. A set of tooling is needed to perform inflation, pressure holding, and leakage measurement functions.

[0003] Currently, the rail transit industry only has pressure holding devices attached to static load test benches, which has significant limitations. The pressure holding function can only be used when using the test bench, and there is no such portable pressure holding fixture. Summary of the Invention

[0004] This utility model addresses the shortcomings of existing technologies by designing a tooling suitable for pressure holding tests of the additional air chamber of a subway bogie frame. This tooling enables the transfer of the air source to the frame, the maintenance of pressure after the additional air chamber of the frame is filled, and the measurement of leakage per unit time.

[0005] This urban rail transit vehicle frame pressure maintenance and leakage measurement device has an air source connector for connecting to the air source installed above the air source switch. The air source switch is installed on the connecting seat through a conversion connector, and the connecting seat is connected to the bogie frame.

[0006] In a further optimization, the air guide column of the connecting seat is installed through the connecting plate, and a handle is installed on the top of the connecting plate.

[0007] Further optimization involves connecting the gas source connector to both the gas source and the pressure gauge.

[0008] Further optimization involves adopting a round tee quick connector for the gas source.

[0009] Further optimization involves using a ball valve as the gas source switch.

[0010] Further optimization includes a threaded connection between the gas source connector and the gas source switch, and a threaded connection between the conversion connector and the connecting seat.

[0011] The advantages of this utility model are: it realizes the functions of adding air to the bogie frame, maintaining a certain pressure value, and measuring leakage, and is portable, making it convenient for transportation, storage and maintenance. Attached Figure Description

[0012] Figure 1This is a schematic diagram of the structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the connector structure.

[0014] The markings in the diagram are: 1-round tee quick connector, 2-ball valve, 3-adapter connector, 4-connector, 41-air guide column, 42-connecting plate, 43-handle. Detailed Implementation

[0015] The following description, in conjunction with the accompanying drawings, further illustrates a device for maintaining pressure and measuring leakage in urban rail transit vehicle frames.

[0016] like Figures 1-2 As shown, this urban rail transit vehicle frame pressure maintenance and leakage measurement device adopts a modular and lightweight design. The entire device comprises a round tee quick connector 1, a ball valve 2, a conversion connector 3, and a connecting seat 4.

[0017] A round tee quick connector 1 for connecting to the air source is installed above the ball valve 2. The ball valve 2 is connected to one end of the air guide column 41 of the connecting seat 4 via a conversion connector 3. The other end of the air guide column 41 is connected to the auxiliary air chamber of the bogie frame. The air guide column 41 is installed through the connecting plate 42, which has a handle. The joints of the round tee quick connector 1 are connected to the air source and a pressure gauge, respectively, with another interface as a spare. The pressure gauge is used to detect the pressure when inflating the auxiliary air chamber of the bogie frame and to monitor for gas leaks.

[0018] The round tee quick connector 1 is used to quickly connect and disconnect the air source and the auxiliary air chamber of the frame. It features good sealing performance and quick connection, effectively preventing gas leakage and ensuring smooth inflation. The ball valve 2 is installed on the air pipeline, controlling the gas flow by rotating the ball. After inflation, it promptly closes the air path to prevent backflow and ensure stable pressure in the auxiliary air chamber. The adapter 3 connects the ball valve to the connecting seat; different sizes of adapters can meet the needs of different frames. The connecting seat 4, as the core component of the entire tooling, connects the air source and the auxiliary air chamber of the frame. It features two sealing rings to ensure a good seal at the connection between the tooling and the frame, preventing leakage. Furthermore, the components of this tooling are detachable for easy transportation, storage, and maintenance.

[0019] When in use, pick up handle 43 and connect the air guide column 41 of the connecting seat 4 to the additional air chamber of the frame. Then connect the adapter 3 to the air guide column 41, connect the air source to one of the joints of the round tee quick connector 1, open the ball valve 2 to turn on the air source, observe the pressure gauge, monitor the pressure when inflating the additional air chamber of the bogie frame and monitor gas leakage.

[0020] The above describes specific embodiments of this utility model and the technical principles used. Any modifications or equivalent transformations based on the technical solution of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for maintaining pressure and measuring leakage in the frame of urban rail transit vehicles, characterized in that: The air source connector for connecting the air source is installed above the air source switch. The air source switch is installed on the connector via a conversion connector, and the connector is connected to the bogie frame.

2. The device for maintaining pressure and measuring leakage of urban rail transit vehicle frame according to claim 1, characterized in that: The air guide column of the connecting seat is installed through the connecting plate, and a handle is installed on the top of the connecting plate.

3. The device for maintaining pressure and measuring leakage of urban rail transit vehicle frame according to claim 1, characterized in that: The gas source connector is used to connect a gas source and a pressure gauge.

4. The device for maintaining pressure and measuring leakage of urban rail transit vehicle frame according to claim 1 or 3, characterized in that: The gas source connector is a round tee quick connector.

5. The device for maintaining pressure and measuring leakage of urban rail transit vehicle frame according to claim 1, characterized in that: The gas source switch is a ball valve.

6. The device for maintaining pressure and measuring leakage of urban rail transit vehicle frame according to claim 1, characterized in that: The gas source connector and the gas source switch are threaded together, and the conversion connector and the connecting seat are threaded together.

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