A test platform for wheel rim lubrication systems

Abstract

This utility model discloses a test platform for a wheel flange lubrication system, mainly comprising a portable main control box, a main support frame, a sensor module, a solenoid valve, an oil tank, an oil tank pneumatic pump, an oil-air distributor, and nozzles. The main support frame is an integral welded structure, on which all the above-mentioned core components are fixed. The air circuit is connected by a high-pressure gas inlet pipe connected to an external air source and then to an air filter, before passing through a solenoid valve to the oil tank pneumatic pump; the oil circuit outputs an oil-air mixture through the oil tank pneumatic pump, which then passes through a metal pipe, an oil-air distributor, and a flexible hose to the nozzles. The nozzles are positioned using an adjustable fixing structure. The portable main control box has a built-in ARM core main control chip and a lithium battery power supply. The power is converted to power all components. The sensor module collects environmental and system operating parameters, and the main control chip receives the data and controls the solenoid valves according to preset logic to achieve the testing function. This utility model can operate independently of the train's power source, and the integrated core components facilitate mobile maintenance.

Description

Technical Field

[0001] This utility model relates to the field of performance testing technology for railway vehicle wheel flange lubrication systems, and in particular to a wheel flange lubrication system testing platform. Background Technology

[0002] As a core component of the subway train's running gear, the wheel flange lubrication system directly determines the wear level between the wheel flange and the rail, train operating noise, and passenger comfort, playing a crucial role in ensuring the safe operation of rail transit. With the increasing operating mileage of subway trains, the wheel flange lubrication system is prone to malfunctions due to component aging, oil circuit blockage, and pneumatic component jamming, such as pneumatic pump failure, abnormal oil injection, and oil leaks. If these malfunctions are not promptly identified and repaired, they will not only shorten the service life of the wheel flange and rail but may also affect the efficiency of train supply on the main line and even pose safety hazards.

[0003] The testing and maintenance of wheel flange lubrication systems currently face significant technical bottlenecks. On the one hand, traditional testing methods heavily rely on the train's own high-pressure air and power supply systems, and the complex disassembly and assembly processes for components result in an average troubleshooting time of up to 8 man-hours, greatly wasting manpower and occupying train resources, directly impacting mainline operations. On the other hand, the industry lacks a full-condition testing platform capable of operating independently of the train. This makes it impossible to simulate the lubrication system's working status in different scenarios—on-line (train in place) and off-line (maintenance workshop)—when the train is without power. It is also difficult to accurately collect key parameters such as injection time, injection pressure, and injection volume, resulting in low fault location accuracy and inefficient spare parts acceptance that fails to meet maintenance requirements.

[0004] While existing technologies include testing devices for wheel flange lubrication tank assemblies (such as the subway train wheel flange lubrication tank assembly testing device disclosed in CN 217442859 U), which simulates train pipeline components through structures such as mounting bases, brackets, air sources, and distribution valves to achieve basic oil injection testing of the tank assembly, these devices still have several limitations and cannot meet the current refined requirements of operation and maintenance. First, the device uses a hand-cranked oil pump for oil supply, relying on manual operation to replenish the lubricating oil. This results in low automation and an inability to precisely control the injection parameters, making it difficult to simulate the lubrication system's performance under different operating conditions. Second, its function is limited to testing the injection effect of the oil tank assembly, lacking comprehensive performance testing and troubleshooting capabilities for the entire wheel rim lubrication system, thus failing to cover system-level maintenance needs. Third, the device lacks an integrated environmental parameter acquisition module, making it unable to monitor environmental variables such as temperature, humidity, and air pressure during testing. This results in insufficient completeness and reliability of the test data, hindering the provision of scientific basis for optimizing the host system. Fourth, although equipped with casters to improve mobility, it lacks ergonomic design for ease of operation and a safety protection structure to prevent misoperation, thus its practicality and safety in complex maintenance environments need improvement.

[0005] In summary, existing wheel flange lubrication system testing technologies suffer from problems such as reliance on train energy, limited functionality, low automation, and insufficient testing accuracy, making it difficult to meet the needs of subway train operation and maintenance for rapid fault diagnosis, efficient spare parts acceptance, and system performance optimization. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a wheel flange lubrication system test platform that can operate independently of the train's power source, integrate core components for easy mobile maintenance, automatically collect parameters, adapt to wheel flange lubrication scenarios of different vehicle models, and realize testing and fault diagnosis.

[0007] To address the aforementioned technical problems, this utility model discloses a test platform for a wheel rim lubrication system, comprising a portable main control box, a main support frame, a sensor module, a high-pressure gas inlet pipe, an air filter, a solenoid valve, an oil tank, an oil tank pneumatic pump, a metal pipe, an oil-gas distributor, a hose, and a nozzle; the main support frame is an integral welded structure, and the portable main control box, sensor module, air filter, solenoid valve, oil tank, and oil-gas distributor are all fixed to the main support frame; The inlet of the high-pressure gas inlet pipe is fixed to the main support frame and connected to an external high-pressure gas source. The outlet of the high-pressure gas inlet pipe is connected to the inlet of the air filter. The outlet of the air filter is connected to the inlet of the solenoid valve. The outlet of the solenoid valve is connected to the inlet of the oil tank pneumatic pump. The oil-gas mixture outlet of the oil tank pneumatic pump is connected to the inlet of the metal pipe. The outlet of the metal pipe is connected to the inlet of the oil-gas distributor. The two outlets of the oil-gas distributor are respectively connected to the inlets of the two hoses. The end of each hose is connected to a nozzle. The nozzle is mounted on the main support frame via an adjustable fixing structure, which is used to adjust the position of the nozzle. The portable main control box has a built-in ARM core main control chip and a lithium battery power supply. The lithium battery power supply is converted into an adaptive voltage by a power module to power the main control chip, sensor module and solenoid valve. The sensor module is electrically connected to the main control chip and is used to collect test environment and system operating parameters. The main control chip is used to receive the data collected by the sensor module and control the opening and closing of the solenoid valve according to preset logic.

[0008] As an optional implementation, the portable main control box is encapsulated in a waterproof box, the touch screen is a 7-inch TFT screen, the communication method is a 16-bit parallel port, and the touch screen communication method is IIC.

[0009] As another optional implementation, the sensor module includes a temperature and humidity sensor and a pressure sensor. The temperature and humidity sensor is used to collect temperature and humidity data of the test environment, and the pressure sensor is used to collect air pressure data from at least one of the high-pressure gas inlet pipe, air filter outlet, solenoid valve inlet and outlet, and oil tank pneumatic pump inlet, so as to monitor the air pressure value and fluctuation in real time.

[0010] As another optional implementation, the portable main control box is equipped with a touch screen and mechanical buttons; The touchscreen is electrically connected to the main control chip for parameter setting and data display; the mechanical buttons include a test start button and a solenoid valve enable button; the solenoid valve enable button is used to control the on / off state of the solenoid valve; the test start button is used to output a test start signal to the main control chip.

[0011] As another optional implementation, the adjustable fixing structure includes a groove and a sliding buckle provided on the main support frame, the nozzle is engaged with the sliding buckle, and the sliding buckle can slide along the groove to adjust the position.

[0012] As another optional implementation, the oil tank is provided with a liquid level observation window and an oil filling port, the oil filling port being equipped with a sealing cap for replenishing lubricating oil and keeping the inside of the oil tank sealed.

[0013] As another optional implementation, the oil tank pneumatic pump is fixedly installed at the bottom of the oil tank; the oil inlet of the oil tank pneumatic pump is connected to the oil outlet of the oil tank, and the air inlet is connected to the air outlet of the solenoid valve through a branch pipeline.

[0014] As another optional implementation, the high-pressure gas inlet pipeline is made of pressure-resistant metal and has a quick-connect connector at its inlet for connecting to an external high-pressure gas source.

[0015] As another optional implementation, the air filter is used to remove water, oil and filter impurities.

[0016] As another optional implementation, the hose is an oil-resistant rubber hose with quick-connect fittings at both ends, which are respectively connected to the oil-gas distributor and the nozzle.

[0017] Compared with the prior art, the embodiments of this utility model have the following beneficial effects: This utility model embodiment utilizes a built-in lithium battery power supply and an independent air circuit design, eliminating the need to connect to the train's own power source. Testing can be conducted even when the train is without power, avoiding the occupation of train resources during fault handling. The main support frame integrates all core components, with clear flow paths for the air circuit (high-pressure air pipe - air filter - solenoid valve - pneumatic pump) and oil circuit (oil tank - pneumatic pump - metal pipe - oil-air distributor - nozzle), reducing the risk of faults caused by cluttered piping and facilitating overall movement and maintenance. The ARM core main control chip, combined with a sensor module, can collect environmental and system parameters in real time and control the on / off state of the solenoid valve according to preset logic, achieving automated control of the lubrication process. This avoids errors from manual operation and provides reliable data support for fault diagnosis and performance optimization. The nozzle's position can be adjusted via an adjustable structure, simulating the wheel flange lubrication scenarios of different train bogie models, eliminating the need to design a separate test platform for each model and reducing equipment investment costs. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a test platform for a wheel rim lubrication system disclosed in an embodiment of this utility model; Figure 2 This is a front view structural schematic diagram of a wheel rim lubrication system test platform disclosed in an embodiment of this utility model; Figure 3 This is a schematic diagram of the power supply structure of a test platform for a wheel rim lubrication system disclosed in an embodiment of this utility model; Figure 4 This is a schematic diagram of the main control structure of a test platform for a wheel rim lubrication system disclosed in an embodiment of this utility model; Figure 5 This is a schematic diagram of the screen driving structure of a wheel rim lubrication system test platform disclosed in an embodiment of this utility model. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] See Figures 1-5 This utility model discloses a test platform for a wheel flange lubrication system, including a portable main control box 2, a main support frame 1, a sensor module, a high-pressure gas inlet pipe, an air filter 3, a solenoid valve 4, an oil tank 5, an oil tank pneumatic pump 6, a metal pipe, an oil-gas distributor 7, a hose, and a nozzle; the main support frame 1 is an integral welded structure, and the portable main control box 2, sensor module, air filter 3, solenoid valve 4, oil tank 5, and oil-gas distributor 7 are all fixed to the main support frame 1; The inlet of the high-pressure gas inlet pipe is fixed to the main support frame 1 and connected to an external high-pressure gas source. The outlet of the high-pressure gas inlet pipe is connected to the inlet 31 of the air filter 3. The outlet 32 ​​of the air filter 3 is connected to the air inlet 41 of the solenoid valve 4. The outlet 42 of the solenoid valve 4 is connected to the air inlet 61 of the oil tank pneumatic pump 6. The oil-gas mixture outlet 62 of the oil tank pneumatic pump 6 is connected to the inlet of the metal pipe. The outlet of the metal pipe is connected to the inlet 71 of the oil-gas distributor 7. The two outlets (72, 73) of the oil-gas distributor 7 are respectively connected to the inlets of the two hoses. The end of each hose is connected to a nozzle. The nozzle is mounted on the main support frame 1 via an adjustable fixing structure 8, which is used to adjust the position of the nozzle. The portable main control box 2 has a built-in ARM core main control chip and a lithium battery power supply. The lithium battery power supply is converted into an adaptive voltage by a power module to power the main control chip, sensor module and solenoid valve 4. The sensor module is electrically connected to the main control chip and is used to collect test environment and system operating parameters. The main control chip is used to receive the data collected by the sensor module and control the opening and closing of the solenoid valve 4 according to preset logic.

[0022] This utility model embodiment utilizes a built-in lithium battery power supply and an independent air circuit design, eliminating the need to connect to the train's own power source. Testing can be conducted even when the train is without power, avoiding the occupation of train resources during fault handling. The main support frame 1 integrates all core components, with clear flow lines for the air circuit (high-pressure air pipe - air filter 3 - solenoid valve 4 - pneumatic pump) and the oil circuit (oil tank 5 - pneumatic pump - metal pipe - oil-air distributor 7 - nozzle), reducing the risk of faults caused by cluttered piping and facilitating overall movement and maintenance. The ARM core main control chip, combined with a sensor module, can collect environmental and system parameters in real time and control the on / off state of the solenoid valve 4 according to preset logic, achieving automated control of the lubrication process. This avoids errors from manual operation and provides reliable data support for fault diagnosis and performance optimization. The nozzle's position can be adjusted via an adjustable structure, simulating the wheel flange lubrication scenarios of different train bogie models, eliminating the need to design a separate test platform for each model and reducing equipment investment costs.

[0023] Optionally, the main support frame 1 can be made of 304 stainless steel square tubes and argon arc welded into an integral structure with a frame height of 1.2m and a length of 2.5m. The bottom is equipped with casters with parking brakes (load capacity of 500kg), which can be flexibly moved to the maintenance workshop or next to the train.

[0024] See Figure 3 In this embodiment, the power supply section uses a 24S05A1 power module and an AMS1117-3.3 power management chip to convert the DC24V lithium battery power into DC5V and DC3.3V control power.

[0025] See Figure 4 In this embodiment, the STM32F103 is used as the main control chip, which mainly realizes signal collection and processing, screen driving, and drive signal control.

[0026] See Figure 5 In this embodiment, the screen is a 7-inch TFT screen, which is directly driven by the STM32F103 main control chip. The display communication is a 16-bit parallel port, and the touch screen communication method is IIC.

[0027] The core of the test logic in this embodiment is "simulated working conditions + parameter acquisition + automatic control": 1. An external high-pressure air source, after being purified by an air filter, is supplied to the pneumatic pump in the oil tank under the control of a solenoid valve; 2. The lithium battery powers the ARM core main control chip and sensor module. The sensor collects and uploads parameters such as temperature, humidity and air pressure in real time. 3. The main control chip controls the on / off state of the solenoid valve according to the preset injection time, pause time and other logic, and drives the pneumatic pump to mix the lubricating oil in the oil tank with high-pressure gas. 4. After the oil-gas mixture is split through a metal pipe and an oil-gas distributor, it is sprayed out from the nozzle through a hose to simulate the wheel flange lubrication process; 5. By adjusting the nozzle position to adapt to different test scenarios, the entire test process is controlled by the main control chip, realizing automated testing and fault diagnosis.

[0028] In an optional embodiment, the portable main control box 2 is encapsulated in a waterproof box, the touch screen is a 7-inch TFT screen, the communication method is a 16-bit parallel port, and the touch screen communication method is IIC.

[0029] In another optional embodiment, the sensor module includes a temperature and humidity sensor and a pressure sensor. The temperature and humidity sensor is used to collect temperature and humidity data of the test environment, and the pressure sensor is used to collect air pressure data from at least one of the high-pressure gas inlet pipe, air filter outlet, solenoid valve inlet and outlet, and oil tank pneumatic pump inlet, so as to monitor the air pressure value and fluctuation in real time.

[0030] The pressure sensor primarily collects air pressure data from the pneumatic system, specifically including: the input air pressure after the high-pressure air source is connected (such as the actual pressure of external 7.5-9 BAR high-pressure compressed air); the purified air pressure at the air filter output to ensure that the pressure after the air source is clean meets the system's operating requirements; the air pressure at the inlet and outlet of the solenoid valve and the air inlet of the pneumatic pump in the oil tank, monitoring the stability of the air pressure in real time; and the air pressure fluctuation data during the test, providing a basis for judging whether there is a leak in the air circuit and whether the pressure meets the standard. This data is uploaded to the main control chip, serving as an important reference for controlling the on / off state of the solenoid valve and ensuring the normal operation of the test, and is also used for fault diagnosis (such as triggering an alarm when the air pressure is insufficient).

[0031] In yet another optional embodiment, the portable main control box 2 is equipped with a touch screen and mechanical buttons; The touchscreen is electrically connected to the main control chip for parameter setting and data display; the mechanical buttons include a test start button and a solenoid valve 4 enable button; the solenoid valve 4 enable button is used to control the on / off state of the solenoid valve 4; the test start button is used to output a test start signal to the main control chip.

[0032] In this embodiment, the test start button only functions when the enable button for solenoid valve 4 is pressed (i.e., when solenoid valve 4 is energized). After the test begins, it will proceed according to a pre-set program, and the solenoid valve 4 will automatically close upon completion. In case of any abnormality during the test, the power supply to solenoid valve 4 can be immediately disconnected by pressing the enable button for solenoid valve 4.

[0033] In another optional embodiment, the adjustable fixing structure 8 includes a groove and a sliding buckle disposed on the main support frame 1, the nozzle being engaged with the sliding buckle, and the sliding buckle being able to slide along the groove to adjust its position.

[0034] In another optional embodiment, the oil tank 5 is provided with a liquid level observation window and an oil filling port, the oil filling port being equipped with a sealing cap for replenishing lubricating oil and keeping the inside of the oil tank 5 sealed.

[0035] In another optional embodiment, the oil tank pneumatic pump 6 is fixedly installed at the bottom of the oil tank 5; the oil inlet of the oil tank pneumatic pump 6 is connected to the oil outlet of the oil tank 5, and the air inlet is connected to the air outlet of the solenoid valve 4 through a branch pipeline.

[0036] In another optional embodiment, the high-pressure gas inlet pipeline is made of pressure-resistant metal and has a quick-connect fitting at its inlet for connecting to an external high-pressure gas source.

[0037] In yet another optional embodiment, the air filter 3 is used to remove water, oil and filter impurities.

[0038] In another optional embodiment, the hose is an oil-resistant rubber hose with quick-connect fittings at both ends, which are respectively connected to the oil-gas distributor 7 and the nozzle.

[0039] The contents disclosed in this utility model embodiment are merely preferred embodiments of this utility model and are only used to illustrate the technical solutions of this utility model, not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A test platform for a wheel rim lubrication system, characterized in that, It includes a portable main control box, a main support frame, a sensor module, a high-pressure gas inlet pipeline, an air filter, a solenoid valve, an oil tank, an oil tank pneumatic pump, a metal pipe, an oil-gas distributor, a hose, and a nozzle; the main support frame is an integral welded structure, and the portable main control box, sensor module, air filter, solenoid valve, oil tank, and oil-gas distributor are all fixed to the main support frame; The inlet of the high-pressure gas inlet pipe is fixed to the main support frame and connected to an external high-pressure gas source. The outlet of the high-pressure gas inlet pipe is connected to the inlet of the air filter. The outlet of the air filter is connected to the inlet of the solenoid valve. The outlet of the solenoid valve is connected to the inlet of the oil tank pneumatic pump. The oil-gas mixture outlet of the oil tank pneumatic pump is connected to the inlet of the metal pipe. The outlet of the metal pipe is connected to the inlet of the oil-gas distributor. The two outlets of the oil-gas distributor are respectively connected to the inlets of the two hoses. The end of each hose is connected to a nozzle. The nozzle is mounted on the main support frame via an adjustable fixing structure, which is used to adjust the position of the nozzle. The portable main control box has a built-in ARM core main control chip and a lithium battery power supply. The lithium battery power supply is converted into an adaptive voltage by a power module to power the main control chip, sensor module and solenoid valve. The sensor module is electrically connected to the main control chip and is used to collect test environment and system operating parameters. The main control chip is used to receive the data collected by the sensor module and control the opening and closing of the solenoid valve according to preset logic.

2. The test platform for the rim lubrication system according to claim 1, characterized in that, The sensor module includes a temperature and humidity sensor and a pressure sensor. The temperature and humidity sensor is used to collect temperature and humidity data of the test environment, and the pressure sensor is used to collect air pressure data from at least one of the high-pressure gas inlet pipe, air filter outlet, solenoid valve inlet and outlet, and oil tank pneumatic pump inlet, so as to monitor the air pressure value and fluctuation in real time.

3. The test platform for the wheel rim lubrication system according to claim 1, characterized in that, The portable main control box is equipped with a touch screen and mechanical buttons; The touchscreen is electrically connected to the main control chip for parameter setting and data display; the mechanical buttons include a test start button and a solenoid valve enable button; the solenoid valve enable button is used to control the on / off state of the solenoid valve; the test start button is used to output a test start signal to the main control chip.

4. The test platform for the wheel rim lubrication system according to claim 3, characterized in that, The portable main control box is encapsulated in a waterproof box. The touch screen is a 7-inch TFT screen. The communication method is a 16-bit parallel port, and the touch screen communication method is IIC.

5. The test platform for the wheel rim lubrication system according to claim 1, characterized in that, The adjustable fixing structure includes a groove and a sliding buckle on the main support frame. The nozzle is engaged with the sliding buckle, and the sliding buckle can slide along the groove to adjust its position.

6. The test platform for the wheel rim lubrication system according to claim 1, characterized in that, The oil tank is equipped with a liquid level observation window and an oil filling port. The oil filling port is equipped with a sealing cap for replenishing lubricating oil and keeping the inside of the oil tank sealed.

7. The test platform for the wheel rim lubrication system according to claim 1, characterized in that, The oil tank pneumatic pump is fixedly installed at the bottom of the oil tank; the oil inlet of the oil tank pneumatic pump is connected to the oil outlet of the oil tank, and the air inlet is connected to the air outlet of the solenoid valve through a branch pipeline.

8. The test platform for the wheel rim lubrication system according to claim 1, characterized in that, The high-pressure gas inlet pipeline is made of pressure-resistant metal and has a quick-connect connector at its inlet for connecting to an external high-pressure gas source.

9. The test platform for the wheel rim lubrication system according to claim 1, characterized in that, The air filter is used to remove water, oil, and filter impurities.

10. The test platform for the wheel rim lubrication system according to claim 1, characterized in that, The hose is an oil-resistant rubber hose with quick-connect fittings at both ends, which are connected to the oil-gas distributor and the nozzle, respectively.

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