Metro vehicle external wind source connection detection device

Abstract

The utility model discloses a metro vehicle external wind source connection detection device, which is characterized in that an air inlet of an air channel connection cavity is connected with a pneumatic quick-connection plug used for being connected with an external wind source, and an air outlet of the air channel connection cavity is connected with a pipeline transition head used for being connected with a train air cylinder interface end; and a pressure test port connected with an air pressure gauge is arranged on a cavity body between the air inlet and the air outlet of the air channel connection cavity. The air charging device has the advantages that the integration of the air charging device is realized, the operation process is simplified, the problem of poor sealing performance of the similar device in the prior art is solved, the working efficiency of an operation test is improved, and the labor intensity is saved. And the installation efficiency is improved by nearly 50%.

Description

Technical Field

[0001] The utility model relates to a subway vehicle external wind source connection detection device, belonging to the field of urban rail. Background Art

[0002] With the rapid development of my country's economy, the demand for urban rail vehicles has continued to increase, which has put forward high-quality and high-efficiency requirements for the production and maintenance of urban rail vehicles. During the maintenance process, it is necessary to conduct a single-section air filling test on the vehicle in a disassembled state.

[0003] Currently, when charging a single section of an urban rail vehicle, pipe transition joints, pneumatic quick-connect connectors, and high-pressure air ducts must be installed and connected one by one. This is then connected to the vehicle's air cylinder to perform air charging and maintenance testing. Since the most important test after charging is the tightness test of the single-section gas pipeline, high sealing requirements are imposed on the vehicle pipeline. Existing devices use multiple components for temporary connection during charging, which creates the possibility of gas leakage at the joints. Furthermore, the existing device is somewhat complex in terms of operation steps, making it difficult for operators to use it out of the box.

[0004] Those skilled in the art need to design a connection device that can integrate the train air inlet end with the external air source and the test end and prevent gas leakage through a rigid connection. Summary of the Invention

[0005] The present invention addresses the shortcomings of the existing technology and provides an operating device for air-charging trains that is relatively simple to operate, has good sealing performance, and is highly integrated. Integrating various components into one device can solve the problems of cumbersome steps during operation and the risk of air leakage between components after installation.

[0006] This subway vehicle external air source connection detection device includes an air path connection cavity and a gas pressure testing device. The air path connection cavity is an assembly part of the device. The air inlet of the air path connection cavity is connected to a pneumatic quick-connect plug for connecting to an external air source, and the air outlet of the air path connection cavity is connected to a pipe transition joint for connecting to the interface end of a train air cylinder. A pressure testing port connected to an air pressure gauge is provided on the cavity between the air inlet and outlet of the air path connection cavity. The air inlet, air outlet and pressure testing port of the air path connection cavity are respectively threaded according to their apertures to produce the required thread structure.

[0007] Further optimization is that the pipeline transition head and the pneumatic quick-connect connector are both connected to the air circuit connection cavity using threads through a sealing rope, and can be adjusted according to the interface requirements of the device being filled with air.

[0008] For further optimization, a wind pressure test point is set between the pressure test port and the air pressure gauge. The wind pressure test point is threadedly connected to the cavity through a composite sealing ring, and the wind pressure data is reflected by the air pressure gauge.

[0009] Further optimized, the air path connection cavity is designed as a hexagonal prism, an integrated design, a hollow structure inside, and the pressure test port is set on any side of the hexagonal prism.

[0010] Further optimization, the gas path connection cavity is made of aluminum alloy profile.

[0011] The advantages of this utility model are: it realizes the integration of the air filling device, simplifies the operation process, avoids the sealing problem of previous similar devices, improves the efficiency of operation test, saves labor intensity, and improves installation efficiency by nearly 50%. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a three-dimensional view of the utility model.

[0013] Figure 2 This is a schematic structural diagram of the utility model.

[0014] Markings in the figure: 1-pipeline transition joint, 2-air connection cavity, 3-composite sealing ring, 4-pressure test point, 5-pneumatic quick plug connector. DETAILED DESCRIPTION

[0015] The following further describes the subway vehicle external wind source connection detection device with reference to the accompanying drawings.

[0016] like Figure 1 、 Figure 2 As shown, this subway vehicle external air source connection detection device mainly comprises a pipe transition joint 1, an air connection cavity 2, a composite sealing ring 3, a pressure test point 4, and a pneumatic quick-connect connector 5. By sequentially sealingly connecting the pipe transition joint 1, pressure test point 4, and pneumatic quick-connect connector 5 to the air connection cavity 2, the device is integrated. The train can be inflated with air using an external air source and an air pressure gauge. The specific structure is as follows: the air connection cavity is an integral part of the device. The air inlet of the air connection cavity is connected to a pneumatic quick-connect plug for connecting to an external air source, and the air outlet of the air connection cavity is connected to the pipe transition joint for connecting to the interface end of the train air cylinder. A pressure test port connected to an air pressure gauge is provided in the cavity between the air inlet and outlet of the air connection cavity. The air inlet, air outlet, and pressure test port of the air connection cavity are threaded together according to their respective apertures to produce the required thread structure.

[0017] The installation process is as follows:

[0018] First, connect the device's pipe connector 1 to the train's air cylinder interface. Once the connection is complete, connect the external air source connector to the device's air line quick connector 5. Then, connect the air pressure gauge to the device's pressure test point 4 to complete the full connection process. Start the external air source to perform an air charging test on the train. The air pressure gauge can be used to monitor the air charging status of the external air source by measuring the pressure at pressure test point 4, thereby detecting any gas leaks in a timely manner.

[0019] The advantages of this utility model lie in its integration of three separate, individually connected components into a single cavity. Furthermore, because the components are rigidly connected, the seal between them is significantly improved, avoiding the problem of seal degradation after repeated use. Furthermore, manual operation is simple, the structure is stable, and labor is saved, improving work efficiency. The tooling is made of aluminum profiles and stainless steel transition pieces, making it lightweight, wear-resistant, and highly reliable.

[0020] The above are specific embodiments of the present invention and the technical principles used. Any modifications or equivalent transformations based on the technical solutions of the present invention should be included in the protection scope of the present invention.

Claims

1. A subway vehicle external wind source connection detection device, characterized by: The air inlet of the air path connection cavity is connected to a pneumatic quick-connect plug for connecting to an external air source, the air outlet of the air path connection cavity is connected to a pipe transition head for connecting to the interface end of the train air cylinder, and a pressure test port connected to an air pressure gauge is provided on the cavity between the air inlet and the air outlet of the air path connection cavity.

2. The subway vehicle external wind source connection detection device according to claim 1, characterized in that: The pipeline transition joint and the pneumatic quick-plug joint are both connected to the air circuit connection cavity by means of a sealing rope and a thread.

3. The subway vehicle external wind source connection detection device according to claim 1, characterized in that: A wind pressure test point is provided between the pressure test port and the air pressure gauge, and the wind pressure test point is threadedly connected to the cavity through a composite sealing ring.

4. The subway vehicle external wind source connection detection device according to claim 1, characterized in that: The air path connection cavity is designed as a hexagonal prism, and the pressure test port is arranged on any side of the hexagonal prism.

5. A subway vehicle external wind source connection detection device according to claim 1 or 4, characterized in that: The gas path connection cavity is made of aluminum alloy profile.

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