Automatic detection system for traction motor bearing

Abstract

The utility model discloses an automatic detection system for a traction motor bearing, and the system comprises a comprehensive detection device and a comprehensive control display cabinet, and the comprehensive control display cabinet is in communication connection with the comprehensive detection device. The comprehensive detection device is installed around a traction motor to be detected and automatically collects and detects three indexes of axle sound, axle temperature and omnibearing vibration. The comprehensive detection device comprises a support, a top vibration measurement unit, a front vibration measurement unit, a side vibration measurement unit and an acoustics and temperature measurement collection unit, wherein the top vibration measurement unit, the front vibration measurement unit, the side vibration measurement unit and the acoustics and temperature measurement collection unit are arranged on the support. The top vibration measurement unit, the front vibration measurement unit, the side vibration measurement unit and the acoustic and temperature measurement acquisition unit can be unfolded or folded into the support. According to the utility model, automatic acquisition of related data (vibration, sound and temperature) of multiple parts is realized, the labor cost is reduced, and the damage of the detection process to the health of personnel is reduced. Moreover, the device is small in size, and has small influence on the original detection process.

Description

TECHNICAL FIELD

[0001] The utility model belongs to traction motor bearing detection field, concretely relates to a traction motor bearing automatic detection system. BACKGROUND

[0002] Traction motor is one of the most important equipment on the rail train, and its working reliability has decisive influence on the normal movement of the whole train. And traction motor is prone to various faults after long-term operation, how to accurately judge the fault cause in time and carry out corresponding treatment is an important work for preventing traction motor fault expansion and even ensuring normal operation of the train, therefore, traction motor needs to be detected in time.

[0003] Among them, the motor bearing is one of the important components of the traction motor, the bearing load is large, in addition to bearing weight, also bears traction force and additional load caused by severe wheel rail impact and poor gear meshing.

[0004] Therefore, it is necessary to ensure that the traction motor bearing is good in all aspects, so the traction motor bearing detection belongs to part of the motor detection of the traction motor.

[0005] The existing traction motor bearing detection needs 2 people to operate, detects 1-2 motors each time, and the overall detection of each motor takes 45 minutes, and detects 6-8 motors per day. Specifically, the following operations are used to check the motor bearing at present: artificial judgment of bearing failure through abnormal sound during running-in test; artificial measurement of bearing seat temperature rise to judge whether there is bearing failure during running-in test; and measurement of the axial, horizontal and vertical vibration values of the motor transmission end and non-transmission end by using a vibration meter to judge whether there is bearing failure during vibration test.

[0006] The above existing operation process mainly has the following problems or disadvantages: (1) the artificial inspection result is seriously dependent on the hearing, work experience, work attitude and other factors of the worker, often leading to uncertain results such as misjudgment and omission of the inspection result; (2) during the running-in test and vibration test, the motor rotates at high speed, and the handheld detection equipment is used for contact detection, which has great safety risk; (3) the vibration test has large noise, which has certain harm to the health of the workers; (4) the detection test time is long, the artificial detection cost is high, and the efficiency is low; (5) the detection result is recorded in paper, and needs to be manually input into the data report in the software interface of the motor test bench, which is low in efficiency. SUMMARY

[0007] The automatic detection system of the traction motor bearing can realize the following functions: (1) automatically collecting bearing acoustic signals, component temperature and omni-directional vibration data when the traction motor operates under the required detection conditions; (2) correlatively analyzing the collected acoustic signals, temperature signals and vibration data, and identifying the specific fault position of the abnormal acoustic signals.

[0008] The utility model discloses a technical scheme that solves its technical problems:

[0009] A traction motor bearing automatic detection system, including comprehensive detection equipment and comprehensive control display machine cabinet, and comprehensive control display machine cabinet is connected with comprehensive detection equipment communication, and comprehensive detection equipment is installed around the traction motor of measuring and automatically detects the three indexes of shaft sound, shaft temperature and omni-directional vibration, and comprehensive detection equipment includes support and top vibration measuring unit, front vibration measuring unit, side vibration measuring unit, acoustic and temperature measuring acquisition unit arranged on the support, and top vibration measuring unit, front vibration measuring unit, side vibration measuring unit, acoustic and temperature measuring acquisition unit can be folded or folded into the support.

[0010] Further, the comprehensive control display machine cabinet is in communication with the top vibration measuring unit, the front vibration measuring unit, the side vibration measuring unit, the acoustic and temperature measuring acquisition unit, so that the top vibration measuring unit, the front vibration measuring unit, the side vibration measuring unit, the acoustic and temperature measuring acquisition unit can be unfolded and collected, or folded into the support.

[0011] Further, the top vibration measuring unit, the front vibration measuring unit and the side vibration measuring unit each include a matching motor, a rotating arm, an electric push rod and a vibration sensor; the motor drives the rotating arm to rotate, the end of the rotating arm is connected to the vibration sensor through the electric push rod, and the electric push rod accurately contacts the measuring point of the traction motor through movement.

[0012] Further, the probe displacement value of the vibration sensor is not less than 4mm.

[0013] Further, the acoustic and temperature measuring acquisition unit includes a matching motor, a rotating arm, a temperature sensor and a microphone sensor, the motor drives the rotating arm to rotate, and the temperature sensor and the microphone sensor are installed on the rotating arm.

[0014] Further, the acoustic and temperature measuring acquisition unit is aligned with the central axis of the traction motor, and the distance from the traction motor is 0.15-0.4m.

[0015] Furthermore, the test points of the traction motor by the top vibration measuring unit, the front vibration measuring unit, the side vibration measuring unit, the acoustic and temperature measurement acquisition unit are all set by on-site debugging during the installation of the traction motor bearing automatic detection system.

[0016] Furthermore, the integrated control display cabinet includes a KVM display, a gigabit switch, an industrial computer, and an amplifier chassis. The amplifier chassis receives and collects data signals, organizes and outputs them to the industrial computer, and visualizes them on the KVM display.

[0017] Furthermore, the integrated control and display cabinet is arranged in a corner of the test room.

[0018] Furthermore, the comprehensive detection equipment is installed at the rear of the traction motor to be tested.

[0019] The advantages of the utility model traction motor bearing automatic detection system are as follows:

[0020] The utility model discloses an automatic detection system for traction motor bearings, which can automatically collect relevant data (vibration, sound and temperature) of multiple parts, thereby reducing labor costs and minimizing the damage to personnel health caused by the detection process.

[0021] The utility model discloses an automatic detection system for traction motor bearings, which is compact and can serve as a supplement to the traction motor inspection process, with little impact on the original detection process.

[0022] The utility model discloses an automatic detection system for traction motor bearings, which can generate a detection report based on the detection data, thereby providing a reliable basis for fault determination and improving the accuracy and efficiency of detection.

[0023] The utility model discloses an automatic detection system for traction motor bearings, which can realize functions such as data storage, query, statistics, comparative analysis, etc., and improve the efficiency of tracing back and searching detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the utility model's traction motor bearing automatic detection system;

[0025] Figure 2 It is a schematic diagram of the comprehensive testing equipment (folded mode);

[0026] Figure 3 It is a schematic diagram of the comprehensive testing equipment (expanded mode);

[0027] Figure 4 Assemble stereograms for comprehensive testing equipment;

[0028] Figure 5 Assemble the side view of the integrated testing equipment;

[0029] Figure 6A schematic diagram of a hoisting path of the traction motor;

[0030] Wherein, 1 motor test platform, 2 integrated control display cabinet, 3 comprehensive detection equipment.

[0031] 3.1 support, 3.2 top vibration measurement unit, 3.3 front vibration measurement unit, 3.4 side vibration measurement unit, 3.5 acoustic and temperature measurement unit;

[0032] 3.21 drive motor, 3.22 rotating arm, 3.23 vibration sensor, 3.24 electric push rod, 3.52 microphone acoustic acquisition device and temperature sensor. DETAILED DESCRIPTION

[0033] The utility model will be further described below in combination with the drawings and examples.

[0034] The traction motor bearing automatic detection system of the embodiment is installed around the traction motor to be tested, and automatically detects the shaft sound, shaft temperature and vibration, judges and analyzes the detection results to obtain the detection results.

[0035] As shown in the drawings, Figure 1 The traction motor bearing automatic detection system of the embodiment includes comprehensive detection equipment 3 and integrated control display cabinet 2. The integrated control display cabinet 2 is in communication connection with the comprehensive detection equipment 3, the data collected by the comprehensive detection equipment 3 is uniformly output to the integrated control display cabinet 2, the data is processed in the industrial computer through the internal amplifier, and then displayed through the man-machine interface of the KVM display, while being sorted and archived, and the test report is output. The test personnel analyzes the fault of the test target through the test report.

[0036] The integrated control display cabinet 2 is placed in the test room, and the comprehensive detection equipment 3 is installed on the motor test platform 1.1. Because the traction motor to be tested needs to be repeatedly hoisted and replaced in the 1.1 motor test platform, the comprehensive detection equipment 3 needs to be folded when hoisting to avoid affecting the hoisting operation; the comprehensive detection equipment 3 is automatically unfolded when testing to detect the traction motor to be tested.

[0037] Integrated control and display cabinet 2 includes a KVM converter, a gigabit switch, an industrial computer, and an amplifier chassis. The KVM converter is a DT1708-C model produced by Jiangsu Datang Guardian Technology Co., Ltd.; the gigabit switch is a CM633 model produced by Shenzhen Green Link Technology Co., Ltd.; the industrial computer is an Advantech 4320 4U cabinet-type industrial computer; and the amplifier chassis, including B&K's B&K2670 (preamplifier) ​​and B&K2690 (multi-channel intelligent signal amplification processing unit), are housed in a standard aluminum chassis along with a power supply. These devices are integrated into the integrated control and display cabinet 2 and connected to an external 220V power supply. The KVM converter, industrial computer, and amplifier chassis are interconnected and receive shaft noise, temperature, and vibration signals collected by the integrated testing equipment. These signals are converted into data for recording, analysis, storage, and display on a monitor. The gigabit switch provides remote data transmission.

[0038] The functions of the integrated control and display cabinet 2 are as follows: through external power supply, it aggregates the picked-up sound signals, temperature data, and vibration data, analyzes the energy and power of the sound signals, and uses fuzzy diagnosis and wavelet analysis theory to draw a concise and clear waveform diagram; after comparing the temperature data and vibration data with the standard data, it outputs the comparison results; the aggregated results will help inspectors determine whether there are defects in the traction motor.

[0039] Preferably, the integrated control and display cabinet 2 is installed in a corner of the workshop to facilitate operation and viewing by personnel.

[0040] Among them, such as Figure 2 、 Figure 3 and Figure 4 As shown, the integrated testing equipment 3 has two modes: unfolded and folded. Testers can control the transition between these two operating states (modes) using the integrated control and display cabinet 2. In unfolded mode, each test unit of the integrated testing equipment 3 moves to a designated position via a rotating shaft and motor. These designated positions are set during equipment commissioning. In folded mode, each test unit folds into the bracket 3.1 of the integrated testing equipment 3.

[0041] Specifically, the comprehensive detection equipment 3 includes a bracket 3.1, a top vibration measurement unit 3.2, a front vibration measurement unit 3.3, a side vibration measurement unit 3.4, and an acoustic and temperature measurement acquisition unit 3.5.

[0042] The top vibration measurement unit 3.2, the front vibration measurement unit 3.3, the side vibration measurement unit 3.4, and the acoustic and temperature acquisition unit 3.5 all include motors, rotating arms, and sensors. They use their respective matching motors and rotating shafts to drive their corresponding test units to achieve the expansion or folding function and complete the detection.

[0043] The support 3.1 is used for positioning and bearing the entire comprehensive detection device 3.

[0044] The top vibration measurement unit 3.2, the front vibration measurement unit 3.3 and the side vibration measurement unit 3.4 are collectively referred to as a vibration measurement unit because of the same operation principle and use mode. The vibration measurement unit comprises a matching drive motor 3.21, which drives a rotating arm 3.22 to rotate. The end of the rotating arm 3.22 is connected to a vibration sensor 3.23 through an electric push rod 3.24. The electric push rod can accurately contact the position to be measured of the traction motor.

[0045] The specific conditions of the two modes of the vibration measurement unit are as follows:

[0046] In the unfolded mode, the three groups of vibration measurement units receive instructions, the motor rotates the rotating arm to reach the test fixed point, and then the electric push rod of the vibration sensor pushes the vibration sensor to contact the top, front and side of the traction motor, respectively. The vibration detector (vibration sensor) in the vibration measurement unit contacts the shell of the traction motor, and the probe displacement value of the vibration sensor is not less than 4 mm. In the folded mode, the vibration measurement unit receives instructions, the electric push rod of the vibration sensor retracts the vibration sensor, and then the motor reversely rotates the rotating arm to return to the initial position.

[0047] The acoustic & temperature measurement unit 3.5 comprises a matching drive motor 3.21, a rotating arm 3.22, a microphone acoustic acquisition device and a temperature measurement sensor 3.52. The drive motor 3.21 drives the rotating arm 3.22 to rotate, and the rotating arm 3.22 is installed with the microphone acoustic acquisition device and the temperature measurement sensor 3.52.

[0048] In this embodiment, the temperature measurement sensor is an IMPAC infrared temperature measurement instrument IPE140 of LumaSense Company, and the structure of the microphone acoustic acquisition device is shown in the Chinese patent “A microphone acoustic acquisition device” (Patent No. CN202320769414.5), which will not be described here.

[0049] The specific conditions of the two modes of the acoustic & temperature measurement unit 3.5 are as follows:

[0050] In the unfolded mode, the acoustic & temperature measurement unit 3.5 receives the signal of the drive motor 3.21 to rotate the rotating arm 3.22 until it is aligned with the central axis of the traction motor, and the distance range from the traction motor is 0.15m-0.4m. In the folded mode, the acoustic & temperature measurement unit 3.5 receives instructions, and the drive motor 3.21 reversely rotates the rotating arm 3.22 to return to the initial position.

[0051] All the test fixed points of the above-mentioned vibration measurement unit and acoustic & temperature measurement unit 3.5 are set by on-site debugging during installation of the system.

[0052] The above merely describes preferred example embodiments of the present application and does not constitute a limitation on the scope of protection of the present application. Any modification, equivalent replacement, and improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the claims of the present application.

Claims

1. An automatic detection system for traction motor bearings, characterized in that: The automatic detection system for traction motor bearings includes comprehensive detection equipment and an integrated control and display cabinet, which is communicatively connected to the comprehensive detection equipment; the comprehensive detection equipment is installed around the traction motor to be tested and automatically collects and detects three indicators: shaft sound, shaft temperature and omnidirectional vibration. The comprehensive detection equipment includes a bracket and a top vibration measuring unit, a front vibration measuring unit, a side vibration measuring unit, and an acoustic and temperature measurement acquisition unit arranged on the bracket; the top vibration measuring unit, the front vibration measuring unit, the side vibration measuring unit, the acoustic and temperature measurement acquisition unit can be unfolded or folded into the bracket.

2. The automatic detection system for traction motor bearings according to claim 1, characterized in that: The integrated control display cabinet is communicatively connected with the top vibration measuring unit, the front vibration measuring unit, the side vibration measuring unit, the acoustic and temperature measurement acquisition unit, so that the top vibration measuring unit, the front vibration measuring unit, the side vibration measuring unit, the acoustic and temperature measurement acquisition unit are unfolded and collect and detect, or folded into the bracket.

3. The automatic detection system for traction motor bearings according to claim 1 or 2, characterized in that: The top vibration measuring unit, the front vibration measuring unit and the side vibration measuring unit all include a matching motor, a rotating arm, an electric push rod and a vibration measuring sensor; the motor drives the rotating arm to rotate, and the end of the rotating arm is connected to the vibration measuring sensor through the electric push rod, and the movement of the electric push rod accurately contacts the measured point of the traction motor.

4. The automatic detection system for traction motor bearings according to claim 3, characterized in that: The probe displacement value of the vibration sensor is not less than 4 mm.

5. The automatic detection system for traction motor bearings according to claim 1 or 2, characterized in that: The acoustic and temperature acquisition unit includes a matching motor, a rotating arm, a temperature sensor and a microphone sensor. The motor drives the rotating arm to rotate, and the temperature sensor and the microphone sensor are installed on the rotating arm.

6. The automatic detection system for traction motor bearings according to claim 5, characterized in that: The acoustic and temperature measurement acquisition unit is aligned with the central axis of the traction motor and is 0.15-0.4m away from the traction motor.

7. The automatic detection system for traction motor bearings according to claim 1 or 2, characterized in that: The test points of the traction motor by the top vibration measuring unit, the front vibration measuring unit, the side vibration measuring unit, the acoustic and temperature measurement acquisition unit are all set by on-site debugging during the installation of the traction motor bearing automatic detection system.

8. The automatic detection system for traction motor bearings according to claim 1 or 2, characterized in that: The integrated control display cabinet includes a KVM display, a gigabit switch, an industrial computer, and an amplifier chassis. The amplifier chassis receives and collects data signals, organizes and outputs them to the industrial computer, and visualizes them on the KVM display.

9. The automatic detection system for traction motor bearings according to claim 1 or 2, characterized in that: The integrated control and display cabinet is arranged in a corner of the test room.

10. The automatic detection system for traction motor bearings according to claim 1 or 2, characterized in that: The comprehensive detection equipment is installed at the rear of the traction motor to be tested.

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