Movable bearing acoustic detection device

Abstract

The utility model discloses a movable bearing acoustic detection device. The detection device comprises a box body, a data processing structure and a collector, trundles are arranged at the bottom of the box body, and a detachable box cover is arranged on the side face or the top of the box body. The data processing structure comprises an amplifier, an acquisition board and an industrial personal computer, and is integrated and fixed in the box body; the collector is detachably arranged in the box body, is separated from the box body and is taken out during detection, and the collector is electrically connected with the amplifier, the collection plate and the industrial personal computer in sequence. The utility model has the advantages of safety, durability, convenience in operation, flexibility and portability, breaks through the limitation of the original fixing equipment, and is suitable for various environments and occasions.

Description

A mobile bearing acoustic testing device Technical Field

[0001] This utility model belongs to the field of bearing testing, and relates to a bearing acoustic testing device, particularly a mobile bearing acoustic testing device. Background Technology

[0002] Wheelset bearing failure is one of the sources of failure in train operation and a major factor affecting train safety. Therefore, strengthening the monitoring and diagnosis of railway train wheelset bearings, and promptly understanding and mastering their working status, can maximize their working potential, avoid or reduce accidents, and is of great significance to the safe operation of trains.

[0003] Wheelset bearing inspection is typically conducted within the repair shop area. It involves using a bearing break-in machine to rapidly rotate the wheelset for bearing break-in and inspection, and determining whether there are bearing problems by judging temperature rise or by manually listening for abnormal sounds. However, this on-site inspection method is susceptible to subjective factors, easily leading to missed faults or misdiagnoses. Alternatively, existing wheelset bearing inspection equipment can be fixed on both sides of the mainline rails, collecting sound samples as trains pass by for detection.

[0004] Because the testing equipment on both sides of the rails must be fixedly installed beside the rails, when technicians need to conduct pilot sampling or sampling in complex environments to confirm whether the testing conditions are met, the original equipment on the rails is difficult to install and dismantle, and its lack of flexibility becomes apparent. Technicians need to design the installation plan for the testing equipment without being able to sample the wheelset sound in advance, which greatly increases the design difficulty and the possibility of subsequent problems.

[0005] Therefore, a convenient, fast, and flexible portable data acquisition device is needed to meet the sampling needs of complex environments, thereby helping technicians to quickly confirm whether the environment meets the testing conditions and providing more accurate information for the subsequent installation of testing equipment. Summary of the Invention

[0006] In view of the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a mobile bearing acoustic testing device, which has the advantages of being safe, durable, easy to operate, flexible, portable and suitable for various environments and occasions.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A mobile bearing acoustic testing device includes a housing, a data processing structure, and a data acquisition unit. Casters are installed at the bottom of the housing, and a removable cover is installed on the side or top of the housing. The data processing structure includes an amplifier, a data acquisition board, and an industrial control computer, all integrated and fixed within the housing. The data acquisition unit is detachably installed within the housing and can be removed from the housing during testing. The data acquisition unit is electrically connected in sequence to the amplifier, the data acquisition board, and the industrial control computer.

[0009] Furthermore, the enclosure includes a handle, a lid, a main body, casters, a pull handle, and a power interface; the pull handle is installed on the inner side of the main body, the casters are installed on the bottom of the main body, the handle is installed on the top of the main body, and the power interface is installed on the outer side of the main body, connecting to a power source to supply power to the data processing structure.

[0010] Furthermore, the lid can be opened 180° from the main body or completely detached from the main body.

[0011] Furthermore, the length, width, and height of the main housing are not less than 0.5m, 0.4m, and 0.4m respectively, and the internal space meets the storage requirements, making it convenient for the collector to be taken out and stored.

[0012] Furthermore, the lid and the main body are assembled by fasteners; the lid and the main body are made of composite wood or hard plastic, and the structural connectors are made of steel.

[0013] Furthermore, the volume of the data processing structure is no greater than 1 / 2 of the internal space of the box.

[0014] Furthermore, the amplifier, industrial computer, and acquisition board are integrated on the mounting plate, which is fixed to the bottom of the enclosure, so no position adjustment is required in either testing or non-testing states.

[0015] Furthermore, the collector includes a microphone, a collector housing, and a handle. The microphone is installed inside the collector housing, and the handle is installed on the collector housing.

[0016] Furthermore, the collector housing is a cylindrical sheet metal structure with a length not exceeding 200mm and a diameter not exceeding 40mm. The collector housing is equipped with a detachable head horn. The collector housing can accommodate and fix a microphone with a length not exceeding 100mm and a diameter not exceeding 7mm.

[0017] Furthermore, during the test, the data acquisition device is aligned with the center of the test and the test distance does not exceed 20cm, and the acquisition time is not less than 180 seconds.

[0018] This utility model is applicable to the following scenarios:

[0019] (1) Wheelset bearings rotating on the running-in machine in the wheelset maintenance depot and traction motor bearings undergoing static operation tests in the maintenance workshop.

[0020] (2) Train operating sections with a speed of less than 30 km / h (non-mainline operation);

[0021] In the above scenarios, provided that personnel can enter safely, this invention can be used to test the target bearing when it is rotating at high speed. During testing, the data acquisition device of this invention should be aligned with the center of the bearing to be tested, with a testing distance not exceeding 20cm, and the data acquisition time should be no less than 180 seconds.

[0022] This invention is easily portable and allows for convenient sound data collection in various environments and situations. The portable device is simple to use, and the collection points can be adjusted manually for more accurate data acquisition. Compared to traditional fixed equipment, this mobile device is more economical and practical, with lower prices and maintenance costs, while also reducing space requirements and energy consumption.

[0023] Specifically, this utility model has the following advantages:

[0024] (1) Applicability: For example, existing bearing acoustic acquisition devices are fixed near both sides of the railway track and cannot be moved or redeployed. This utility model miniaturizes the acquisition device into a mobile design, making installation, debugging and use more flexible and convenient; in addition, the integration into the housing allows for quick deployment and storage, and can more effectively cope with a variety of complex environments.

[0025] (2) Stability: The overall structure of this utility model is stable and suitable for long-term handling or testing.

[0026] (3) Economy: The portable design of this utility model improves installation efficiency, thereby reducing maintenance and operating costs.

[0027] (4) Easy to maintain: This utility model has fewer overall components, reducing maintenance time, improving transportation efficiency, and ensuring safe transportation order. Attached Figure Description

[0028] Figure 1 is a schematic diagram of the mobile bearing acoustic testing device of Example 1;

[0029] Figure 2 is a schematic diagram of the box in Embodiment 1;

[0030] Figure 3 is a schematic diagram of the data processing structure in Example 1;

[0031] Figure 4 is a schematic diagram of the data collector in Example 1;

[0032] Among them, 2 is the housing, 3 is the data processing structure, and 4 is the data acquisition unit;

[0033] 2.1 Handle, 2.2 Lid, 2.3 Main body, 2.4 Casters, 2.5 Handle, 2.6 Power interface;

[0034] 3.1 Mounting board, 3.2 Amplifier, 3.3 Industrial computer, 3.4 Data acquisition board;

[0035] 4.1 Microphone, 4.2 Acquisition unit housing, 4.3 Grip. Detailed Implementation

[0036] The present invention will be further described below with reference to the accompanying drawings and embodiments. Embodiment 1

[0037] Referring to Figure 1, the mobile bearing acoustic testing device of this embodiment includes a housing 2, a data processing structure 3, and a data acquisition device 4. The data processing structure 3 and the data acquisition device 4 are housed in the housing 1, which meets the requirements of data acquisition and portability. At the same time, the structure is stable, ensuring stability and safety during operation, thereby ensuring that the sound acquisition device can effectively acquire sound data, and is suitable for various environments and occasions.

[0038] The internal space of the container 2 must be at least 0.08m³ and the length of the container standing upright on the ground must be no less than 0.6m. The container 2 has doors at the front and back.

[0039] In this embodiment, the internal dimensions of the mobile bearing acoustic testing device housing are no less than 0.5m*0.4m*0.4m, which meets the equipment storage requirements and facilitates the removal and storage of the data acquisition unit 4.

[0040] Referring to Figure 2, the box body 2 includes a handle 2.1, a lid 2.2, a main body 2.3, casters 2.4, a pull handle 2.5, and a power interface 2.6;

[0041] The main body 2.3 is designed as a cuboid structure with no lids at both ends. The front and rear ends of the main body 2.3 are equipped with detachable lids 2.2. The lids 2.2 can be opened 180° or completely detached from the main body 2.3.

[0042] Preferably, the lid 2.2 and the main body 2.3 are assembled by fasteners;

[0043] Preferably, the lid 2.2 and the main body 2.3 are made of composite wood or hard plastic, and the structural connectors are made of steel;

[0044] Handle 2.5 is installed on the inner side of the main body 2.3, caster 2.4 is installed on the bottom of the main body 2.3, and handle 2.1 is installed on the top of the main body 2.3. Handle 2.5, handle 2.1, and caster 2.4 are used in situations where movement is required, and their usage is similar to that of a suitcase, making it convenient for people to transport the main body 2.

[0045] Preferably, the casters are 2.4mm with shock-absorbing pads.

[0046] The power interface 2.6 is installed on the outer side of the main enclosure 2.3. When in use, it is connected to a power source to supply power to the internal data processing structure 3.

[0047] The volume of the data processing structure 3 is no more than 1 / 2 of the internal space of the box 2. Preferably, the length, width and height of the data processing structure 3 in this embodiment are 450mm*300mm*220mm.

[0048] Referring to Figure 3, the data processing structure 3 includes a mounting plate 3.1, an amplifier 3.2, an industrial control computer 3.3, and a data acquisition board 3.4. The amplifier 3.2, the industrial control computer 3.3, and the data acquisition board 3.4 are integrated on the mounting plate 3.1 and fixed inside the housing 2, and their positions do not need to be adjusted in either the testing or non-testing state.

[0049] The data transmission process is as follows: microphone 4.1 → amplifier 3.2 → acquisition board 3.4 → industrial computer 3.3. That is, microphone 4.1 is connected to amplifier 3.2, amplifier 3.2 is connected to acquisition board 3.4, and acquisition board 3.4 is connected to industrial computer 3.3.

[0050] The dimensions of the mounting plate 3.1 are determined by the length and width of the main enclosure 2.3, and it also accommodates the integrated mounting of the amplifier 3.2, industrial computer 3.3, and acquisition board 3.4. The mounting plate 3.1 is installed at the bottom of the main enclosure 2.3.

[0051] Amplifier 3.2 is a device that amplifies and processes the electrical signal collected by microphone 4.1 before outputting it. In this embodiment, amplifier 3.2 uses B&K's B&K2670 (preamplifier) ​​and B&K2690 (multi-channel intelligent signal amplification and processing unit), which are installed together with the power supply in a standard aluminum chassis.

[0052] The industrial PC 3.3 is a device for collecting, processing, and storing the processed analog signals. The industrial PC 3.3 can be connected to an external monitor or laptop via an expansion interface, allowing testers to view the collected sample details on the monitor. In this embodiment, the industrial PC 3.3 is an Advantech 4320 4U rack-mount industrial PC.

[0053] The acquisition board 3.4 is a common multi-channel AD data acquisition card that can convert the electrical signal amplified by amplifier 3.2 into an analog signal and output it through a data cable.

[0054] The data collector 4 can be separated from the housing 2. During non-testing phases, the data collector 4 is fixed inside the housing 2. Preferably, the data collector 4 is installed on the side of the housing 2 for easy assembly and disassembly.

[0055] The data cable of the data collector 4 has a reserved length for connection with the data processing structure 3. Preferably, the data cable of the data collector 4 is 5 to 10 meters long, and the data cable can be extended by adapter according to actual needs.

[0056] Referring to Figure 4, the collector 4 includes a microphone 4.1, a collector housing 4.2, and a handle 4.3, with the microphone 4.1 disposed inside the collector housing 4.2.

[0057] The receiver housing 4.2 is a cylindrical sheet metal structure with a length not exceeding 200mm and a diameter not exceeding 40mm, featuring detachability, an adapter, and a speaker-shaped head. It can accommodate and secure microphones 4.1 with a length not exceeding 100mm and a diameter not exceeding 7mm.

[0058] The preferred structure of the microphone 4.1 and the acquisition housing 4.2 is described in CN202320769414.5, which describes the structure of a microphone acoustic acquisition device. Further details are omitted here.

[0059] Among them, microphone 4.1 is a structure that converts the sound signal generated by the operation of the vehicle bearing into an electrical signal. Due to the simplified design, each acquisition unit 4 has only one microphone 4.1.

[0060] The accuracy of data acquisition can be improved by increasing the test duration, specifically by ensuring that the acquisition time is no less than 180 seconds.

[0061] The testing distance is shortened by manually holding the sample at close range, specifically by aligning it with the center of the sample and keeping the testing distance no more than 20cm. This directional design also reduces the impact of other noise.

[0062] Preferably, a handle 4.3 is provided on the housing 4.2 of the data collector, which facilitates flexible operation by the tester when the test area of ​​the wheel pair to be measured cannot be directly aligned with the measurement. Example 2

[0063] The usage process of the mobile bearing acoustic testing device in Example 1 is as follows:

[0064] During non-testing phases, both data processing structure 3 and data acquisition device 4 are placed inside housing 2, allowing testers to move and deploy them.

[0065] During the testing phase, upon reaching the location to be tested, move and place housing 2, lock the casters 2.4, open the front and rear covers 2.2, and connect the power supply via power interface 2.6; turn on the amplifier 3.2 and industrial computer 3.3, take out the data acquisition device 4, aim it at the part to be tested, and collect data. After data acquisition is complete, retract the data acquisition device 4, and turn off the amplifier 3.2 and industrial computer 3.3. Close the cover 2.2, unlock the casters 2.4, and the mobile bearing acoustic testing device of this embodiment can be moved or redeployed by the testing personnel.

[0066] As a critical component of train wheelsets, bearings are essential for ensuring railway safety. The mobile bearing acoustic detection device in this embodiment, with its mobile structure, allows for convenient sound data collection in various environments and situations, enhancing the bearing's early warning capabilities. This proactive approach moves the prevention line forward, enabling early detection of bearing failures and ensuring safe train operation.

[0067] 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. A mobile bearing acoustic testing device, characterized in that, The detection device includes a housing, a data processing structure, and a data acquisition unit; casters are provided at the bottom of the housing, and a removable cover is provided on the side or top of the housing; the data processing structure includes an amplifier, a data acquisition board, and an industrial control computer, which are integrated and fixed inside the housing; the data acquisition unit is detachably installed inside the housing and can be separated from the housing during detection, and the data acquisition unit is electrically connected to the amplifier, the data acquisition board, and the industrial control computer in sequence.

2. The mobile bearing acoustic testing device as described in claim 1, characterized in that, The enclosure includes a handle, a lid, a main body, casters, a pull handle, and a power interface. The pull handle is installed on the inner side of the main body, the casters are installed on the bottom of the main body, the handle is installed on the top of the main body, and the power interface is installed on the outer side of the main body, which is connected to a power source to supply power to the data processing structure.

3. The mobile bearing acoustic testing device as described in claim 2, characterized in that, The lid can be opened 180° from the main body or completely detached from the main body.

4. The mobile bearing acoustic testing device as described in claim 2, characterized in that, The length, width, and height of the main housing are not less than 0.5m, 0.4m, and 0.4m respectively, and the internal space meets the storage requirements, making it convenient for the data collector to be taken out and stored.

5. A mobile bearing acoustic testing device as described in claim 2, characterized in that, The lid and main body are assembled by fasteners; the lid and main body are made of composite wood or hard plastic, and the structural connectors are made of steel.

6. A mobile bearing acoustic testing device as described in claim 1 or 2, characterized in that, The volume of the data processing structure is no more than 1 / 2 of the internal space of the box.

7. A mobile bearing acoustic testing device as described in claim 1 or 2, characterized in that, The amplifier, industrial computer, and acquisition board are integrated on the mounting plate, which is fixed to the bottom of the enclosure, so no position adjustment is required in either testing or non-testing states.

8. A mobile bearing acoustic testing device as described in claim 1 or 2, characterized in that, The data collector includes a microphone, a data collector housing, and a handle. The microphone is installed inside the data collector housing, and the handle is installed on the data collector housing.

9. A mobile bearing acoustic testing device as described in claim 8, characterized in that, The collector housing is a cylindrical sheet metal structure with a length not exceeding 200mm and a diameter not exceeding 40mm. The collector housing has a detachable head horn and can accommodate and fix a microphone with a length not exceeding 100mm and a diameter not exceeding 7mm.

10. A mobile bearing acoustic testing device as described in claim 1 or 2, characterized in that, During the test, the data acquisition device should be aimed at the center of the test and the test distance should not exceed 20cm, and the acquisition time should not be less than 180 seconds.

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