Hub bearing sealing durability experiment device

Abstract

The utility model discloses a wheel hub bearing sealing durability experiment device which comprises a wheel hub bearing sealing experiment assembly, an equipment frame, an equipment driving device and an external medium spraying device, the wheel hub bearing sealing experiment assembly and the equipment driving device are installed on the equipment frame, and the external medium spraying device is installed on the equipment frame. And the external medium spraying device is mounted at the hub bearing assembly to be detected in the middle of the equipment framework. The hub bearing sealing durability detection device has the characteristics of capability of carrying out durability detection on temperature, air tightness, multiple application environments and the like on hub bearing sealing, simple structure and reliable detection result.

Description

Technical Field

[0001] This utility model belongs to the technical field of wheel hub bearing assembly durability testing equipment, and in particular relates to a wheel hub bearing seal durability testing device. Background Technology

[0002] Wheel bearing assemblies are a very important component in automobiles. During vehicle operation, wheel bearing assemblies are subjected to various internal and external conditions such as temperature, pressure, mud, water, and dust, all of which can lead to wheel bearing assembly failure. Therefore, wheel bearing assemblies need to be tested before leaving the factory. Existing testing equipment can only perform rotational durability tests, and there is currently no equipment that can perform diverse durability tests on wheel assemblies. Utility Model Content

[0003] The purpose of this invention is to improve upon the shortcomings of existing technologies by providing a wheel hub bearing seal durability testing device that can perform durability testing on wheel hub bearing seals for temperature, airtightness, and various application environments, with a simple structure and reliable test results.

[0004] The purpose of this utility model is achieved as follows: a wheel hub bearing seal durability testing device, characterized by comprising a wheel hub bearing seal testing assembly, an equipment frame, an equipment drive unit, and an external medium spraying device. The wheel hub bearing seal testing assembly and the equipment drive unit are mounted on the equipment frame, and the external medium spraying device is installed at the wheel hub bearing assembly to be tested in the middle of the equipment frame.

[0005] The aforementioned equipment frame is used to install and support the wheel hub bearing sealing test assembly, the equipment drive unit, and the external media spraying device;

[0006] The aforementioned wheel hub bearing sealing test assembly is used to test the temperature, sealing, and durability of the wheel hub bearing assembly under test during rotation.

[0007] The aforementioned equipment drive device is used to provide power and drive the wheel hub bearing to rotate;

[0008] The external medium spraying device is used to provide the detection medium required for the test, including but not limited to mud, dust, and sand.

[0009] To further achieve the purpose of this utility model, the wheel hub bearing sealing test assembly may include a test shaft, a fixed connection flange, a fixed connection component, a sealing ring one, a drive connection flange, a sealing ring two, a sealing end cover, a sealing ring three, a locking pad, a locking nut, a sensor mounting block, a spring, a temperature sensor, a sealing ring four, a sensor wiring conduit, a heating tube, a pneumatic pipe, and a pneumatic connector. The inner ring of the wheel hub bearing assembly to be tested is fitted onto the rear end of the test shaft and fixed by the locking pad and the locking nut. The front part of the test shaft is fixed to the equipment frame by the fixed connection flange and the fixed connection component. A sealing ring one is provided at the contact point between the fixed connection flange and the fixed connection component.

[0010] The outer ring drive connection flange of the wheel hub bearing assembly under test is connected, and a second sealing ring is provided at the connection. The drive connection flange is used to connect to the equipment drive device.

[0011] The sealing end cap is installed over the center hole of the drive connection flange. A sealing ring is provided at the connection between the sealing end cap and the drive flange, so that a cavity is formed between the tail end of the test shaft and the drive flange for loading the lubricating medium required for the wheel hub bearing assembly under test.

[0012] A sensor mounting block is installed inside the shaft on which the inner ring of the wheel hub bearing assembly to be tested is mounted. A spring is inside the sensor mounting block. The spring presses against the temperature sensor so that the temperature sensor is in close contact with the inner wall of the wheel hub bearing assembly to be tested. A sensor wiring tube is provided inside the experimental shaft.

[0013] The experimental shaft is equipped with a heating tube to provide the required temperature for the test;

[0014] The experimental shaft has an air hole at the inner ring of the wheel hub bearing assembly to be tested, which is connected to the inner cavity of the wheel hub bearing assembly. The sealing ring four is used to seal the assembly gap between the experimental shaft and the wheel hub bearing assembly to be tested. One end of the air pressure pipe is connected to the air passage inside the experimental shaft, and the other end is connected to the external air source through the air pressure connector. The air hole of the experimental shaft is connected to the air passage and air pressure pipe inside the experimental shaft.

[0015] Compared with existing technologies, this invention has the following significant features and positive effects: In addition to rotational durability testing, this device can simultaneously perform temperature control, air pressure control, and testing in harsh external environments. The temperature control heating tube is installed inside the experimental shaft, which is more energy-efficient than an external heat source. Using a spring to hold the temperature sensor in close contact with the inner wall of the bearing assembly under test ensures that the detected temperature is the actual temperature of the bearing assembly, guaranteeing the accuracy of the experiment and allowing for more sensitive temperature control. An air hole is provided at the inner ring of the bearing assembly under test mounted on the experimental shaft, communicating with the inner cavity of the bearing assembly. This structure occupies little space and can monitor experimental air pressure in real time. Various experimental media such as mud, water, dust, and sand can simulate various harsh environments in real-world use. All of the above ensures the authenticity and effectiveness of the entire experiment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one structure of the present utility model.

[0017] Figure 2 This is a schematic diagram of a wheel hub bearing sealing test assembly according to the present invention.

[0018] Figure 3 for Figure 2 AA sectional view.

[0019] Figure 4 for Figure 2 BB cross-sectional view.

[0020] Figure 5 for Figure 2 CC section view.

[0021] In the diagram: 1. Wheel hub bearing sealing test assembly; 2. Equipment frame; 3. Equipment drive unit; 4. External medium spraying device; 101. Wheel hub bearing assembly under test; 102. Test shaft; 103. Fixed connection flange; 104. Fixed connection piece; 105. Sealing ring one; 106. Drive connection flange; 107. Sealing ring two; 108. Sealing end cap; 109. Sealing ring three; 110. Locking pad; 111. Locking nut; 112. Sensor mounting block; 113. Spring; 114. Temperature sensor; 115. Sealing ring four; 116. Sensor wiring conduit; 117. Heating tube; 118. Air pressure pipeline; 119. Air pressure connector; 120. Air hole. Detailed Implementation

[0022] The invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0024] In the description of this invention, it should be understood that the terms "center," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," and "inner," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0026] A wheel hub bearing seal durability testing apparatus, referring to Figure 1The test equipment includes a wheel hub bearing sealing test assembly 1, an equipment frame 2, an equipment drive unit 3, and an external medium spraying device 4. The wheel hub bearing sealing test assembly 1 and the equipment drive unit 3 are mounted on the equipment frame 2. The external medium spraying device 4 is installed at the wheel hub bearing assembly 101 under test in the middle of the equipment frame 2. Specifically: the equipment frame 2 is used to mount the wheel hub bearing sealing test assembly 1, the equipment drive unit 3, and the external medium spraying device 4; the wheel hub bearing sealing test assembly 1 is used to detect the temperature, sealing, and durability of the wheel hub bearing assembly 101 under test during rotation; the equipment drive unit 4 is used to provide power and drive the wheel hub bearing to rotate; and the external medium spraying device 4 is used to provide the test medium required for the test, which includes, but is not limited to, mud, dust, and sand.

[0027] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5The wheel hub bearing sealing test assembly 1 includes a wheel hub bearing assembly under test 101, a test shaft 102, a fixed connection flange 103, a fixed connection piece 104, a first sealing ring 105, a drive connection flange 106, a second sealing ring 107, a sealing end cap 108, a third sealing ring 109, a locking pad 110, a locking nut 111, a sensor mounting block 112, a spring 113, a temperature sensor 114, a fourth sealing ring 115, a sensor wiring conduit 116, a heating tube 11, a pneumatic pipe 118, and a pneumatic connector 119; the inner ring of the wheel hub bearing assembly 101 is a stationary ring, which is fitted onto the rear of the test shaft 102, and The experimental shaft 102 is fixed to the equipment frame 2 via locking pads 110 and locking nuts 111 on the experimental shaft 102. The experimental shaft 102 is also fixed to the equipment frame 2 via a fixed connecting flange 103 and a fixed connecting member 104. The fixed connecting member 104 is a ring with an outward flange at one end. A sealing ring 105 is provided at the contact point between the fixed connecting flange 103 and the outward flange of the fixed connecting member 104 to provide a seal and prevent external impurities from entering. The outer ring of the hub bearing assembly 101 is a rotating ring connected to the drive connecting flange 106. A second sealing ring 107 is provided at the contact point between the outer ring and the drive flange. The drive connecting flange 106 is connected to the equipment drive device 3. The drive connection flange 106 rotates with the outer ring of the wheel hub bearing assembly 101 to simulate the operation of the wheel hub bearing. The device drive unit 3 is a conventional power supply device, such as a motor. The sealing end cap 108 is installed on the center hole of the drive connection flange 106, forming a cavity between the tail end of the test shaft 102 and the drive connection flange 106. The cavity is sealed by the sealing ring 109 and can be filled with the lubricating medium required by the wheel hub bearing assembly 101 under test. A sensor mounting block 112 is installed in the hole of the test shaft 102. The mounting hole of the sensor mounting block 112 is located on the test shaft where the inner ring of the wheel hub bearing assembly 101 under test is installed. On the test shaft 102, a spring 113 is installed inside the sensor mounting block 112. The spring 113 presses against the temperature sensor 114, so that the temperature sensor 114 can be in close contact with the inner wall of the inner ring of the wheel hub bearing assembly 101 under test. This allows for accurate detection of the temperature of the rotating part of the wheel hub bearing assembly 101 in close contact with the test shaft 102. A sensor wiring conduit 116 is installed inside the test shaft 102, so that the wiring of the temperature sensor 114 can be connected to an external control. The number of temperature sensors 114 can be set as needed. In this embodiment, two are set. A heating tube 117 is installed inside the test shaft 102, which can control the temperature required by the wheel hub bearing assembly 101 under test during the experiment based on the feedback from the temperature sensor 114.The test shaft 102 has air holes 120, which are located on the test shaft 102 where the inner ring of the wheel hub bearing assembly 101 under test is installed. The test shaft 102 has an air passage that communicates with the air holes 120. After assembly, the air holes 120 of the test shaft 102 communicate with the inner cavity of the wheel hub bearing assembly 101 under test. A sealing ring 115 seals the assembly gap between the test shaft 102 and the wheel hub bearing assembly 101. The air passage of the test shaft 102 communicates with a pneumatic pipe 118, which is connected to an external air source via a pneumatic connector 119, providing an air source for testing the air pressure in the wheel hub bearing assembly 101. During testing, the external medium spraying device 4 sprays mud, dust, sand, or other experimental media onto the connection between the test shaft 102 and the wheel hub bearing assembly 101 under test to simulate actual operation. Simultaneously, it detects and controls parameters such as temperature and pressure to simulate actual operation, thus implementing the durability test.

Claims

1. A wheel hub bearing seal durability testing device, characterized in that... The equipment includes a wheel hub bearing sealing test assembly, an equipment frame, an equipment drive unit, and an external media spraying device. The wheel hub bearing sealing test assembly and the equipment drive unit are mounted on the equipment frame, and the external media spraying device is installed at the wheel hub bearing assembly under test in the middle of the equipment frame. The aforementioned equipment frame is used to install and support the wheel hub bearing sealing test assembly, the equipment drive unit, and the external media spraying device; The aforementioned wheel hub bearing sealing test assembly is used to test the temperature, sealing, and durability of the wheel hub bearing assembly under test during rotation. The aforementioned equipment drive device is used to provide power and drive the wheel hub bearing to rotate; The external medium spraying device is used to provide the detection medium required for the test, which includes mud, dust, and sand.

2. The wheel hub bearing seal durability testing device according to claim 1, characterized in that... The wheel hub bearing sealing test assembly includes a test shaft, a fixed connection flange, a fixed connection component, a sealing ring one, a drive connection flange, a sealing ring two, a sealing end cap, a sealing ring three, a locking pad, a locking nut, a sensor mounting block, a spring, a temperature sensor, a sealing ring four, a sensor wiring conduit, a heating tube, a pneumatic pipeline, and a pneumatic connector. The inner ring of the wheel hub bearing assembly under test is fitted onto the rear end of the test shaft and fixed by the locking pad and the locking nut. The front part of the test shaft is fixed to the equipment frame by the fixed connection flange and the fixed connection component. A sealing ring one is provided at the contact point between the fixed connection flange and the fixed connection component. The outer ring drive connection flange of the wheel hub bearing assembly under test is connected, and a second sealing ring is provided at the connection. The drive connection flange is used to connect to the equipment drive device. The sealing end cap is installed over the center hole of the drive connection flange. A sealing ring is provided at the connection between the sealing end cap and the drive flange, so that a cavity is formed between the tail end of the test shaft and the drive flange for loading the lubricating medium required for the wheel hub bearing assembly under test. A sensor mounting block is installed inside the shaft on which the inner ring of the wheel hub bearing assembly to be tested is mounted. A spring is inside the sensor mounting block. The spring presses against the temperature sensor so that the temperature sensor is in close contact with the inner wall of the wheel hub bearing assembly to be tested. A sensor wiring tube is provided inside the experimental shaft. The experimental shaft is equipped with a heating tube to provide the required temperature for the test; The experimental shaft has an air hole at the inner ring of the wheel hub bearing assembly to be tested, which is connected to the inner cavity of the wheel hub bearing assembly. The sealing ring four is used to seal the assembly gap between the experimental shaft and the wheel hub bearing assembly to be tested. One end of the air pressure pipe is connected to the air passage inside the experimental shaft, and the other end is connected to the external air source through the air pressure connector. The air hole of the experimental shaft is connected to the air passage and air pressure pipe inside the experimental shaft.

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