Automatic pressure maintaining test device for air tightness of air pipeline of bogie brake unit

Abstract

The utility model discloses an automatic pressure maintaining test device for air tightness of an air pipeline of a bogie brake unit. The device comprises a remote control cabinet and a pressure maintaining test structure. The pressure maintaining test structure is arranged between an air supply source and a bogie brake unit air pipeline and comprises a control unit, a digital display screen and a pressure maintaining test pipeline. The pressure maintaining test pipeline comprises a manual ball valve, a pressure transmitter, an electric pressure reducing valve, an electric ball valve, a multi-way joint, an elbow and a direct pipeline, and the pressure maintaining test pipeline is arranged in a single-pipeline or multi-pipeline form; the control unit is connected with the pressure transmitter, the electric pressure reducing valve, the electric ball valve, the digital display screen and the remote control cabinet. From the aspects of cost, maintenance efficiency and informatization management application requirements, the purposes of reducing labor cost and labor intensity, improving maintenance quality and maintenance result informatization management level can be achieved, and train operation safety is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of railway vehicle bogie testing, and relates to a pressure testing device, specifically an automatic pressure holding test device for the air tightness of the air pipeline of the bogie braking unit. Background Technology

[0002] The bogie is the running gear of a train, possessing important functions such as load-bearing, vibration damping, guidance, traction, and braking. It is the most complex and critical component among all types of trains, determining the train's operating speed and ride quality. Its braking reliability is closely related to the safe operation of the entire train. In actual operation, due to vibration, frequent train turns, complex and variable operating conditions and environmental conditions, coupled with some unfavorable factors that may arise during operation, various malfunctions frequently occur.

[0003] Therefore, bogies are always a key focus of inspection and verification during regular train inspections, overhauls, and various maintenance processes for all types of trains, involving numerous items and complex procedures. Among the many maintenance items for bogies, the air tightness of the braking unit's air lines is a critical indicator related to the safe braking of the train. During routine train inspections, overhauls, and various maintenance processes, a pressure-holding test is typically used to verify whether the air tightness of the braking unit's air lines meets the requirements.

[0004] Currently, the air tightness test of the air pipeline of the bogie braking unit is carried out using a pressure holding test fixture (such as the bogie pipeline pressure holding test device described in the existing tool CN201993208U), which is operated manually. During vehicle maintenance, the pressure holding test fixture is used to conduct an air tightness test on the brake pipeline of one side of the bogie. After manually connecting the air source inlet of the pressure holding test fixture to the quick-connect interface of the bogie air pipeline, the corresponding air valve is manually controlled to supply air according to the pressure holding process requirements. After the timer reaches the pressure holding delay time, the pressure value is read. Then, the manual judges whether the pressure relief value exceeds the limit, and finally the corresponding pressure holding test results are recorded.

[0005] The above-mentioned pressure holding test tooling has the following problems in the entire pressure holding test: (1) It requires manual operation and intervention throughout the process. Due to the long-term manual operation, it is inevitable that there will be problems such as operation error and reading error, and there is a risk that the bogie will be released if it fails the inspection; (2) The test analysis results are recorded in paper form, and the data cannot be stored for a long time and cannot be traced in real time.

[0006] In summary, considering factors such as cost, maintenance effectiveness, and the need for information management applications, there is a requirement for a fully automated pressure-holding test device that can be integrated with information management to replace existing testing methods. This would reduce labor costs and intensity, improve maintenance quality and the level of information management of maintenance results, and ultimately ensure train operation safety. Summary of the Invention

[0007] In view of a series of problems in the existing technology, such as the automation of air tightness pressure holding test of bogie pneumatic pipeline in EMU depot maintenance workshop and related data services, this utility model provides an automatic pressure holding test device for the air tightness of the air pipeline of bogie braking unit.

[0008] The technical solution of this utility model is:

[0009] An automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit is provided. The device includes a remote control cabinet and a pressure-holding test structure. The pressure-holding test structure is placed between the air supply source and the air pipeline of the bogie braking unit. The pressure-holding test structure includes a control unit, a digital display screen, and a pressure-holding test pipeline. The pressure-holding test pipeline includes a manual ball valve, a pressure transmitter, an electric pressure reducing valve, an electric ball valve, a multi-way connector, an elbow, and a direct pipeline. The pressure-holding test pipeline can be configured as a single pipeline or a multi-pipeline. The control unit is connected to the pressure transmitter, the electric pressure reducing valve, the electric ball valve, the digital display screen, and the remote control cabinet.

[0010] Furthermore, the single-pipeline pressure holding test pipeline includes a manual ball valve, a pressure transmitter, an electric pressure reducing valve, a pressure transmitter, an electric ball valve, a pressure transmitter, and an electric ball valve connected in sequence.

[0011] Furthermore, the pressure holding test pipeline in the multi-pipeline form includes: an electric pressure reducing valve, a pressure transmitter, an electric ball valve, a pressure transmitter, and an electric ball valve connected in parallel and sequentially via a multi-port connector at the rear end of the manual ball valve and the pressure transmitter.

[0012] Furthermore, the pressure holding test structure also includes a wireless router, and the control unit communicates with the remote control cabinet through the wireless router.

[0013] Furthermore, the pressure holding test structure also includes a protective cover, and the manual ball valve, pressure transmitter, electric pressure reducing valve, electric ball valve, control unit, digital display screen, multi-way connector, elbow, direct pipeline, and wireless router are all fixed on the protective cover.

[0014] Furthermore, the protective housing includes a front housing and a rear housing forming a sealed space.

[0015] Furthermore, the pressure holding test pipeline is connected to the air supply source and the air pipeline of the bogie braking unit via quick-connect pipelines.

[0016] Furthermore, the pressure transmitter is a high-precision automated digital display instrument, used to collect the air pressure in the high-pressure section, the set-pressure section, and the pressure-maintaining section in real time.

[0017] Furthermore, the electric pressure reducing valve is a high-precision automated digital display instrument that adjusts the intake high air pressure to the target set air pressure of the test bogie model.

[0018] Furthermore, the electric ball valve is an automated electrical control instrument used to open or close the air passage between the high-pressure pipe section, the set-pressure pipe section, and the pressure-maintaining pipe section.

[0019] Compared with the prior art, the advantages of this utility model are as follows:

[0020] (1) The automatic pressure holding test device for the air tightness of the air pipeline of the bogie braking unit of this utility model realizes the complete pressure holding test process of pre-pressure adjustment, air filling, pressure holding, reading and air release. It not only reduces labor costs and labor intensity, but also reduces human operation errors and improves test accuracy.

[0021] (2) The automatic pressure holding test device for the air tightness of the air pipeline of the bogie braking unit of this utility model has a remote control cabinet and a pressure holding test structure. Various pressure values ​​and test results read by the pressure holding test structure during the test are automatically connected to the remote control cabinet. Moreover, through the industrial control computer, printer, display and other equipment in the remote control cabinet, the functions of exporting and printing pressure holding test result reports, querying and printing historical information are realized.

[0022] (3) The automatic pressure holding test device for the air tightness of the air pipeline of the bogie braking unit of this utility model has multiple sets of independent air pressure pipelines built in, so as to meet the needs of testing multiple sets of pneumatic pipelines with different set air pressures on a bogie at the same time. Each set of pipelines can be set with a target air pressure and automatically track the air pressure given. That is, one device of this utility model can complete the pressure holding test of all pipelines for a bogie, which greatly improves the test efficiency.

[0023] (4) In the automatic pressure holding test device for the air tightness of the air pipeline of the bogie braking unit of this utility model, the control unit is connected to an electric pressure reducing valve to realize the rapid adjustment of the set air pressure. At the same time, it tracks the change of the set air pressure during operation and makes real-time adjustments and compensations (when applying, after connecting the air source and selecting the vehicle model, the entire pressure adjustment process does not require manual intervention and automatically realizes the adaptive adjustment of air pressure and real-time follow-up control). Moreover, the control unit is also connected to a pressure transmitter and an electric ball valve to collect the air pressure in the high-pressure section, the set pressure section, and the pressure holding section in real time, so as to realize the automatic charging and discharging of the air path in each section of the pressure holding process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit according to the present invention;

[0025] Figure 2 This is a plan view of the pressure holding test structure of the automatic pressure holding test device for the air tightness of the air pipeline of the bogie braking unit according to this utility model;

[0026] Figure 3 This is a 3D perspective view of the pressure holding test structure of the automatic pressure holding test device for the air tightness of the air pipeline of the bogie braking unit according to this utility model;

[0027] Among them, 1-manual ball valve, 2-pressure transmitter, 3-electric pressure reducing valve, 4-electric ball valve, 5-digital display screen, 6-te, 7-elbow, 8-direct pipeline, 9-wireless router, 10-protective cover, 11-remote control cabinet, 12-control unit.

[0028] A - High-pressure pipe section, B - Pressure-setting pipe section, C - Pressure-maintaining pipe section. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] Reference Figure 1 As shown, the automatic pressure holding test device for the air tightness of the air pipeline of the bogie braking unit in this embodiment includes a remote control cabinet 11 and a pressure holding test structure, and the remote control cabinet 11 and the pressure holding test structure are communicatively connected.

[0031] The pressure holding test structure is placed between the air supply source and the air pipeline of the bogie braking unit. The pressure holding test structure is connected to the air supply source and the air pipeline of the bogie braking unit respectively through quick-connect pipes.

[0032] Preferably, the dimensions of the pressure holding test structure are: length 1000-1800mm, width 500-800mm, and height 150-200mm.

[0033] Reference Figure 2 and Figure 3 As shown, the pressure holding test structure includes a control unit 12, a digital display screen 5, a wireless router 9, a protective housing 10, and a pressure holding test pipeline. The pressure holding test pipeline includes a manual ball valve 1, a pressure transmitter 2, an electric pressure reducing valve 3, an electric ball valve 4, a tee 6, an elbow 7, and a direct pipe 8. The control unit 12 is connected to the pressure transmitter 2, the electric pressure reducing valve 3, the electric ball valve 4, the digital display screen 5, and the wireless router 9, respectively. In this embodiment, the control unit 12 is a microcontroller.

[0034] The pressure holding test pipeline can be set up in the form of a single pipeline or multiple pipelines.

[0035] The pressure holding test pipeline in single-pipe configuration consists of: manual ball valve 1, pressure transmitter 2, electric pressure reducing valve 3, pressure transmitter 2, electric ball valve 4, and pressure transmitter 2 and electric ball valve 4 connected in sequence.

[0036] In this embodiment, a dual-pipeline pressure holding test pipeline is used: the single-line pressure holding test pipeline is connected in the following order: manual ball valve 1, pressure transmitter 2, electric pressure reducing valve 3, pressure transmitter 2, electric ball valve 4, pressure transmitter 2, electric ball valve 4, and so on, supplemented by a tee 6, elbow 7, and direct pipeline 8 to form two pipelines for the air tightness pressure holding test of the bogie braking unit air pipeline. Specifically, in this embodiment, the pressure holding test pipeline is divided into two lines after the first pressure transmitter 2 via the tee 6.

[0037] The pressure transmitter 2 is a high-precision automated digital display instrument. In this embodiment, the pressure transmitter 2 is installed at the rear end of the gas source inlet, the rear end of the electric pressure reducing valve 3, and the rear end of the electric ball valve 4, respectively, to collect the air pressure in the high-pressure section A, the set-pressure section B, and the pressure-maintaining section C in real time, ensuring the accuracy of the test pressure. The pressure transmitter 2 installed at the rear end of the gas source inlet is shared by both pipelines.

[0038] The electric pressure reducing valve 3 is a high-precision automated digital display instrument used to reduce the intake high air pressure to the target set air pressure of the test vehicle and dynamically track the target set air pressure to achieve accurate pressure adjustment values ​​for different bogies. In this embodiment, the electric pressure reducing valve 3 is located at the rear end of the shared pressure transmitter 2 and is located in two pipelines, used to reduce the intake high air pressure in the two pipelines to the target set air pressure of the test vehicle.

[0039] Among them, the electric ball valve 4 is an automated electrical control instrument used to open and close the air passage between the high-pressure pipe section A, the set-pressure pipe section B, and the pressure-holding pipe section C, thereby realizing the air passage filling and releasing control at each stage of the automatic pressure-holding process. In this embodiment, the electric ball valve 4 is located in both pipes.

[0040] Among them, the digital display screen 5 is a touch screen, with a built-in operating interface connected to the control unit 12.

[0041] The wireless router 9 is used to establish wireless network communication between the pressure holding test pipeline and the remote control cabinet 11, enabling the download of the vehicle test procedure plan and the uploading of pressure holding test process and result data. Specifically, the control unit 12 communicates with the remote control cabinet 11 through the wireless router 9.

[0042] Among them, the manual ball valve 1, pressure transmitter 2, electric pressure reducing valve 3, electric ball valve 4, digital display screen 5, tee 6, elbow 7, direct pipe 8, wireless router 9, and control unit 12 are all fixed on the protective housing 10. The protective housing 10 is a sealed type, which helps to ensure that the electrical equipment is not affected by external electromagnetic interference. Preferably, the protective housing 10 includes a front housing and a rear housing to form a sealed space.

[0043] The remote control cabinet 11 is connected to the control unit 12 of the pressure holding test pipeline. The remote control cabinet 11 is equipped with an industrial computer, printer, display, wireless router, etc. It automatically associates and analyzes various pressure values ​​and test results read during the test with operator and bogie information, and saves them. It also provides services such as exporting and printing pressure holding test result reports, querying and printing historical information.

[0044] The device in this embodiment can achieve intelligent control and automated operation under existing test standard requirements, thereby improving testing efficiency, reducing labor intensity, and eliminating the impact of human operation on the accuracy of the brake pressure holding test.

[0045] The workflow of the automatic pressure-holding test device for the air tightness of the bogie braking unit air pipeline in this embodiment is as follows:

[0046] First, it is necessary to Figure 2 and Figure 3 The pressure holding test structure shown is connected to the air supply source and the air pipeline of the braking unit respectively (specifically: such as...). Figure 2 The right side of the pressure holding test structure shown is connected to the air supply source, such as... Figure 2 The left side of the pressure-holding test structure shown is connected to the air pipeline of the bogie braking unit. Preferably, a quick-connect interface is used to save time and effort, and the quick-connect interface sealing design ensures no leakage.

[0047] Secondly, after the connection is completed, lightly touch the digital display screen 5 embedded in the protective cover 10 and select the pressure holding test setting process option for the air pipeline of the bogie braking unit.

[0048] Then, based on the vehicle model and pressure holding test control process parameters selected by the operator, the air pressure is automatically adjusted, the air valve is automatically controlled, and the air pressure of each section of the pipeline (high pressure section A, set pressure section B and pressure holding section C) is automatically read at regular intervals. The complete pressure holding test process, including pre-pressure adjustment, air filling, pressure holding, reading, and air release, can be completed automatically according to the process.

[0049] During the test, when the pressure transmitter 2 of the pressure holding pipe section C shows a change in value until the value stabilizes, and the digital display screen 5 shows that the test is over, it means that the pressure holding test process is complete.

[0050] Finally, the test data will be automatically saved and uploaded to the remote control cabinet 11 for statistical analysis and archiving, generating a pressure holding test result report and providing services such as export, printing, and historical information query.

[0051] The above description is merely a preferred embodiment of the present utility model and does not constitute a limitation on the scope of protection of the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the scope of protection of the claims of the present utility model.

Claims

1. An automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit, characterized in that, The device includes a remote control cabinet and a pressure holding test structure. The pressure holding test structure is located between the air supply source and the air pipeline of the bogie braking unit. The pressure holding test structure includes a control unit, a digital display screen, and a pressure holding test pipeline. The pressure holding test pipeline includes a manual ball valve, a pressure transmitter, an electric pressure reducing valve, an electric ball valve, a multi-way connector, an elbow, and a direct pipeline. The pressure holding test pipeline can be configured as a single pipeline or a multi-pipeline. The control unit is connected to the pressure transmitter, the electric pressure reducing valve, the electric ball valve, the digital display screen, and the remote control cabinet.

2. The automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit as described in claim 1, characterized in that, The single-pipeline pressure holding test pipeline includes a manual ball valve, a first pressure transmitter, a first electric pressure reducing valve, a second pressure transmitter, a first electric ball valve, a third pressure transmitter, and a second electric ball valve connected in sequence.

3. The automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit as described in claim 2, characterized in that, The pressure holding test pipeline in the multi-pipe configuration includes: The single-pipe pressure holding test pipeline is connected in sequence to the second electric pressure reducing valve, the fourth pressure transmitter, the third electric ball valve, the fifth pressure transmitter, and the fourth electric ball valve via a multi-port connector at the rear end of the first pressure transmitter.

4. The automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit as described in claim 1, characterized in that, The pressure holding test structure also includes a wireless router, and the control unit communicates with the remote control cabinet through the wireless router.

5. The automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit as described in claim 4, characterized in that, The pressure holding test structure also includes a protective cover, and the manual ball valve, pressure transmitter, electric pressure reducing valve, electric ball valve, control unit, digital display screen, multi-way connector, elbow, direct pipeline, and wireless router are all fixed on the protective cover.

6. The automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit as described in claim 5, characterized in that, The protective enclosure includes a front enclosure and a rear enclosure forming a sealed space.

7. The automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit as described in any one of claims 1-3, characterized in that, The pressure holding test pipeline is connected to the air supply source and the air pipeline of the bogie braking unit via quick-connect pipelines.

8. The automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit as described in claim 1, characterized in that, The pressure transmitter is a high-precision automated digital display instrument, used to collect the air pressure in the high-pressure section, the set-pressure section, and the pressure-maintaining section in real time.

9. The automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit as described in claim 1, characterized in that, The electric pressure reducing valve is a high-precision automated digital display instrument that adjusts the intake high air pressure to the target set air pressure of the test bogie model.

10. The automatic pressure-holding test device for the air tightness of the air pipeline of the bogie braking unit as described in claim 1, characterized in that, The electric ball valve is an automated electrical control instrument used to open or close the air passage between the high-pressure pipe section, the set-pressure pipe section, and the pressure-maintaining pipe section.

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