Motor low-pressure closed-loop on-load aging experiment device
The compact low-pressure closed-loop load aging test device for motors solves the problems of insufficient sealing and accuracy of existing motor testing devices in low-pressure environments, realizing efficient and economical motor performance testing and improving test accuracy and motor life prediction.
Patent Information
- Application Number
- CN202423296234.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing motor testing equipment is complex and expensive or has unstable sealing performance when simulating low-pressure environments, making it difficult to meet the high standards of scientific research and industrial testing requirements.
A compact low-pressure closed-loop load aging test device for motors was designed. It uses components such as a vacuum pump, encoder and magnetic powder load, combined with air pressure regulation mechanism and sensing technology to ensure the sealing of the device and the precise control of the test environment.
It reduces initial investment costs and operating expenses, improves the accuracy and repeatability of test results, and can simulate the use of motors in harsh conditions such as high altitudes, helping to identify design defects and improve motor life prediction.
Smart Images
Figure CN223911018U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the motor test technical field, especially to a kind of motor low pressure closed loop with load aging experimental device. BACKGROUND
[0002] At present, with the extensive application of industrial equipment to high altitude area, as one of important power sources, the stable operation of motor in these extreme environments becomes the focus of research, and traditional motor test is mostly limited to standard atmospheric pressure conditions, lacking effective prediction of motor performance in actual application environment, in recent years, although there are test devices and technologies for high temperature, low temperature, humidity and other factors, but for simulating the equipment of motor long-term work in low pressure environment is still insufficient.
[0003] At present, in order to test the performance of motor in low pressure environment, there are two methods commonly used;The first method is to place the entire test system in a large vacuum chamber, and simulate different height pressure conditions by adjusting the pressure in the vacuum chamber. The advantage of this method is that the pressure value can be accurately controlled, but due to the large size of the equipment, the cost is high, which is not suitable for the daily detection needs of large-scale production enterprises, the second method is to create a local low pressure environment around the motor, such as using a specially designed sealed cavity, and cooperating with air pump to reduce the internal pressure. This scheme is relatively economical, but it lacks in airtightness and stability, and may leak for a long time, affecting the accuracy of test results.
[0004] Although the above two methods have their own characteristics, but there are obvious limitations, the former is complex and expensive, and is difficult to popularize and apply to small and medium-sized enterprises and laboratories, and the latter is unstable in sealing performance, and cannot realize long-term continuous stable low pressure environment, resulting in the decline of test precision, which cannot meet the high standard of scientific research and industrial test requirements. CONTENT OF THE INVENTION
[0005] In view of the shortcomings of the prior art, the present application provides a kind of motor low pressure closed loop with load aging experimental device, overcome the shortcomings of prior art, aims at solving the problems in the background art.
[0006] In order to achieve the above purpose, the application adopts the following technical scheme: a kind of motor low pressure closed loop with load aging experimental device, including motor body, driver, power supply, end cover and vacuum air pump, the outer side of the motor body is fixedly installed with shell, the inner wall of the motor body is rotatably installed with shaft, the outer side of the end cover is fixedly installed with encoder, the outer side of the shell is fixedly installed with connecting piece, the outer side of the connecting piece is fixedly installed with magnetic powder load, the output end of the vacuum air pump is fixedly connected with air pipe, the end of the air pipe away from the vacuum air pump is fixedly connected to the inner wall of air nozzle, the air nozzle is fixedly communicated to the outer wall of end cover, the outer edge of the air pipe is fixedly installed with valve and air pressure gauge.
[0007] As a preferred implementation, the outer side of the motor body is fixedly installed with an end cover, and a 0-shaped ring is installed at the middle position of the motor body and the end cover.
[0008] By adopting the above technical scheme, the opening on the outer side of the shell can be sealed, and the sealing after connection can be ensured by the 0-shaped ring, so that leakage does not easily occur when the simulated air pressure environment.
[0009] As a preferred implementation, the inner wall of the shell is fixedly installed with an oil seal two, the inner wall of the end cover is fixedly installed with an oil seal one and a front bearing respectively, the rotating shaft is rotatably connected to the inner walls of the oil seal one and the oil seal two, and the rotating shaft is fixedly installed to the inner wall of the front bearing.
[0010] By adopting the above technical scheme, the sealing of the device can be ensured, and the sealing and stability of the rotating shaft during rotation can be ensured.
[0011] As a preferred implementation, the magnetic powder load is coaxially fixed and connected with the rotating shaft.
[0012] By adopting the above technical scheme, when the magnetic powder load is supplied with stabilized voltage direct current, a constant load torque can be generated.
[0013] As a preferred implementation, the encoder is composed of a rotor and a stator, and the stator is fixed to the end cover and the rotor is fixed to the rotating shaft.
[0014] By adopting the above technical scheme, when the motor body drives the rotating shaft to rotate, the encoder rotor is also rotated, the encoder converts the displacement signal of the rotor into an electrical signal and sends it to the driver, the driver continuously adjusts the energization direction and current of the motor body to stabilize rotation, and when low air pressure and long time load affect the measured motor body, the motor body closed-loop experiment will appear unstable.
[0015] As a preferred implementation, the outer wall of the shell is fixedly installed with a sealed plug, and the lead-out wire of the motor body is arranged in the inner wall of the sealed plug and fixedly connected with the driver.
[0016] By adopting the above technical scheme, air leakage can be prevented, and the inner cavity of the shell can be ensured to be in a sealed state.
[0017] As a preferred implementation, the vacuum air pump, the driver and the magnetic powder load are electrically connected with the power supply, and the driver and the encoder are electrically connected.
[0018] By adopting the technical scheme, the power supply can be used to supply electric energy to the vacuum air pump, the driver and the magnetic powder load, and normal operation is ensured.
[0019] The beneficial effects of the present application are as follows:
[0020] 1. Compared with the traditional large-scale vacuum test system, the motor low-pressure closed-loop load aging test device adopts a compact design and an economical air pressure control strategy, greatly reducing the initial investment cost and operating expenses. The unique air pressure adjustment mechanism and advanced sensing technology are combined to accurately control the air pressure of the experimental environment in a wide range, improving the accuracy and repeatability of the test results. Whether it is a small enterprise or a large manufacturer, this device can be easily used to complete complex motor testing tasks, promoting the overall improvement of the industry's technical level.
[0021] 2. The motor low-pressure closed-loop load aging test device integrates low-pressure, load and closed-loop experiments together to simulate the use of the motor in harsh conditions such as high altitudes. After the experiment, the life of the motor can be explored, and the state of the motor after a long time of load can be fully mastered. The experiment can also expose the design flaws of the measured motor, which helps to improve the motor process and minimize the customer's use risk. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is a schematic diagram of the overall structure of the present application;
[0023] Figure 2 It is another perspective schematic diagram of the overall structure of the present application;
[0024] Figure 3 It is a schematic diagram of the cross-sectional local enlarged structure of the present application.
[0025] Reference signs in the figure: 1, motor body; 2, shell; 3, shaft; 4, end cover; 5, encoder; 6, oil seal I; 7, front bearing; 8, connecting piece; 9, magnetic powder load; 10, driver; 11, power supply; 12, sealing plug; 13, vacuum air pump; 14, air pipe; 15, air nozzle; 16, valve; 17, air pressure gauge; 18, O-ring; 19, oil seal II. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments.
[0027] Reference Figures 1-3The utility model provides an electric machine low air pressure closed loop with load aging experiment device, including electric machine body 1, driver 10, power supply 11, end cover 4 and vacuum air pump 13, the outside fixed mounting of electric machine body 1 has shell 2, the inner wall rotationally installed of electric machine body 1 has rotating shaft 3, the outside fixed mounting of end cover 4 has encoder 5, the outside fixed mounting of shell 2 has connecting piece 8, the outside fixed mounting of connecting piece 8 has magnetic powder load 9, the output of vacuum air pump 13 is fixedly connected with air pipe 14, the inner wall of the one end of air pipe 14 away from vacuum air pump 13 is fixedly connected in air cock 15, air cock 15 is fixedly connected to the outer wall of end cover 4, the outer rim of air pipe 14 is fixedly installed with valve 16 and air pressure gauge 17.
[0028] Refer to Figure 3 The outside fixed mounting of electric machine body 1 has end cover 4, and 0-shaped ring 18 is installed at the middle position of electric machine body 1 and end cover 4, so that the opening on the outside of shell 2 can be sealed, and the sealing property after connection can be ensured by 0-shaped ring 18, so that leakage does not easily occur when the simulated air pressure environment is simulated.
[0029] Refer to Figure 3 Oil seal two 19 is fixedly installed on the inner wall of shell 2, oil seal one 6 and front bearing 7 are fixedly installed on the inner wall of end cover 4, rotating shaft 3 is rotationally connected to the inner walls of oil seal one 6 and oil seal two 19, and rotating shaft 3 is fixedly installed on the inner wall of front bearing 7, so that the sealing property of the device can be ensured, and the sealing property and stability of rotating shaft 3 when rotating can be ensured.
[0030] Refer to Figure 1 - Figure 3 Magnetic powder load 9 is coaxially fixed and connected with rotating shaft 3, so that constant load torque can be generated when stable voltage direct current is supplied to magnetic powder load 9.
[0031] Refer to Figure 3 Encoder 5 is composed of a rotor and a stator, and the stator is fixed with end cover 4, and the rotor is fixed with rotating shaft 3, so that the rotor of encoder 5 is rotated when electric machine body 1 drives rotating shaft 3 to rotate, the displacement signal of the rotor is converted into an electric signal and sent to driver 10 by encoder 5, the power-on direction and current of electric machine body 1 are continuously adjusted by driver 10 after receiving the position signal of encoder 5 to stabilize rotation, and the closed loop experiment of electric machine body 1 will appear unstable when low air pressure and long time with load affect the measured electric machine body 1.
[0032] Refer to Figure 2 Sealing jack 12 is fixedly installed on the outer wall of shell 2, and the lead-out wire of electric machine body 1 is arranged in the inner wall of sealing jack 12 and fixedly connected with driver 10, so that air leakage can be prevented, and the inner cavity of shell 2 can be ensured in a sealed state.
[0033] Refer to Figure 1 AndFigure 2 The vacuum air pump 13, the driver 10 and the magnetic powder load 9 are electrically connected with the power supply 11, and the driver 10 is electrically connected with the encoder 5, so that the power supply 11 can be used to supply electric energy to the vacuum air pump 13, the driver 10 and the magnetic powder load 9, and normal operation is ensured.
[0034] Working principle: first, the power supply 11 supplies power to the vacuum air pump 13 to start pumping, at this time, the valve 16 is opened, and the gas in the cavity of the shell 2 is pumped out, at this time, the air pressure gauge 17 is continuously observed, when the air pressure reaches the experimental target value, the valve 16 is closed, the vacuum air pump 13 is closed, the pressure is maintained, the low pressure environment is simulated, the magnetic powder load 9 is fixed, the magnetic powder load 9 is coaxially connected with the rotating shaft 3 and is fixed, at this time, the power supply 11 supplies stable voltage direct current to the magnetic powder load 9, that is, a constant load torque can be generated, at the same time, the motor body 1 drives the rotating shaft 3 to rotate, and the rotor of the encoder 5 is rotated, the displacement signal of the rotor is converted into an electric signal by the encoder 5 and is sent to the driver 10, the driver 10 continuously adjusts the power supply direction and current of the motor body 1 to stabilize the rotation, when the low pressure and long time load affect the measured motor body 1, the closed-loop experiment of the motor body 1 will appear unstable.
[0035] In the description of the utility model, it is to be explained that, the orientation or position relation of the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "another end" and the like is based on the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance.
[0036] In the description of the utility model, it is to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.
[0037] The utility model is described above in combination with specific implementation manners, but the person skilled in the art should be clear that these descriptions are exemplary, and are not the limitation of the protection scope of the utility model. The person skilled in the art can make various modifications and modifications to the utility model according to the spirit and principle of the utility model, and these modifications and modifications are also within the scope of the utility model.
Claims
1. A low air pressure closed loop load aging experiment device of an electric machine, comprising an electric machine body (1), a driver (10), a power supply (11), an end cover (4) and a vacuum air pump (13), characterized in that, The outer side of the motor body (1) is fixedly installed with an outer shell (2), the inner wall of the motor body (1) is rotatably installed with a rotating shaft (3), the outer side of the end cover (4) is fixedly installed with an encoder (5), the outer side of the outer shell (2) is fixedly installed with a connecting piece (8), the outer side of the connecting piece (8) is fixedly installed with a magnetic powder load (9), the output end of the vacuum air pump (13) is fixedly connected with an air pipe (14), the end of the air pipe (14) away from the vacuum air pump (13) is fixedly connected to the inner wall of an air nozzle (15), the air nozzle (15) is fixedly communicated to the outer wall of the end cover (4), the outer edge of the air pipe (14) is fixedly installed with a valve (16) and an air pressure gauge (17).
2. The low air pressure closed loop belt load aging test device of an electric machine according to claim 1, characterized in that, The outer side of the motor body (1) is fixedly installed with an end cover (4), and the 0-shaped ring (18) is installed at the middle position of the motor body (1) and the end cover (4).
3. The low air pressure closed loop belt load aging test device of claim 1, wherein, The inner wall of the outer shell (2) is fixedly installed with an oil seal two (19), the inner wall of the end cover (4) is fixedly installed with an oil seal one (6) and a front bearing (7) respectively, the rotating shaft (3) is rotatably connected to the inner walls of the oil seal one (6) and the oil seal two (19), and the rotating shaft (3) is fixedly installed in the inner wall of the front bearing (7).
4. The low air pressure closed loop belt load aging test device of claim 1, wherein, The magnetic powder load (9) is coaxially fixed and connected with the rotating shaft (3).
5. The low air pressure closed loop belt load aging test device of claim 1, wherein, The encoder (5) is composed of a rotor and a stator, and the stator is fixed with the end cover (4), and the rotor is fixed with the rotating shaft (3).
6. The low air pressure closed loop belt load aging test device of claim 1, wherein, The outer wall of the outer shell (2) is fixedly installed with a sealing plug (12), and the lead-out wire of the motor body (1) is arranged in the inner wall of the sealing plug (12) and fixedly connected with a driver (10).
7. The low air pressure closed loop belt loaded aging test device for an electric machine of claim 1, wherein, The vacuum air pump (13), the driver (10) and the magnetic powder load (9) are electrically connected with the power supply (11), and the driver (10) and the encoder (5) are electrically connected.