Motor load for EMC (Electro Magnetic Compatibility) test

Abstract

The utility model discloses a motor load for EMC test, which comprises a mounting shaft connected with a motor, the top of the mounting shaft is connected with a plurality of blades through a blade connecting piece, and the blades are uniformly distributed around the central axis of the blade connecting piece; the motor is connected with the EMC test power supply connector through the motor power supply interface; according to the utility model, the load directly connected with the motor is arranged, so that the motor can load the load as required under the condition of set voltage and current in an EMC test, the influence of idling of the motor and application of the load through the controller on the EMC test is avoided, the EMC test result of the motor is closer to the actual situation, the accuracy of the EMC test result of the motor is improved, and the EMC test efficiency is improved. And the load can be adjusted as required, the cost is low, the structure is simple, and the operation is convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor EMC test equipment technical field, concretely relates to a motor load for EMC test. BACKGROUND

[0002] With the intelligentization of whole vehicle higher and higher, motor parts use also more and more, the EMC requirement that follows gradually improves. In the conventional motor EMC test, the motor basically has no load, and the test is carried out by motor idling, but this way has a big difference with the actual operation of the motor, and the actual operation state of the motor cannot be simulated.

[0003] In the conventional EMC test containing load, the motor is installed in the product for testing, or other controllers are used to apply load to the motor, these methods cannot determine whether the real EMC level of the motor meets the requirements in advance, and the load applied by the controller will affect the EMC, especially the test results of radiation. SUMMARY

[0004] The utility model needs to solve the technical problem to provide a motor load for EMC test, can realize the motor EMC test process with load operation, avoids the influence of motor idling or controller load on EMC test, guarantees the accuracy of motor EMC test result.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is as follows.

[0006] A motor load for EMC test, comprising an installation shaft connected with a motor, the top of the installation shaft is connected with a plurality of blades through a blade connecting piece, and the blades are uniformly arranged around the center shaft of the blade connecting piece; the motor is connected with an EMC test power connector through a motor power connector.

[0007] The above-mentioned motor load for EMC test, the bottom of the installation shaft is provided with a fixing hole connected with the motor shaft of the motor, and the motor shaft is inserted into the fixing hole to connect the motor with the installation shaft.

[0008] The above-mentioned motor load for EMC test, the blade, the blade connecting piece and the installation shaft are integrally formed.

[0009] The above-mentioned motor load for EMC test, the blade is detachably installed on the blade connecting piece, and the bottom of the blade connecting piece is connected with the installation shaft through a threaded connection shaft.

[0010] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model is as follows.

[0011] The utility model provides a motor load for EMC test, through setting up and motor direct connection's load, make motor can be in EMC test under setting voltage, current condition, load according to demand, avoid motor idling, through the influence of controller exerted load to EMC test, make motor's EMC test result more close to actual situation, improve motor EMC test result's accuracy, and load size can be adjusted according to demand, low in cost, simple structure, convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the specific structure schematic diagram of embodiment 1 of the utility model;

[0013] Figure 2 It is the specific structure schematic diagram of load adjustment in embodiment 1 of the utility model;

[0014] Figure 3 It is the plan view of the utility model;

[0015] Figure 4 It is the specific structure schematic diagram of the utility model and motor connection;

[0016] Figure 5 It is the sectional view of the utility model and motor connection;

[0017] Figure 6 It is the specific structure schematic diagram of embodiment 2 of the utility model.

[0018] Wherein: 1. blade, 2. mounting shaft, 3. fixed hole, 4. motor, 5. motor shaft, 6. motor power interface, 7. EMC test power connector, 8. blade connecting piece, 9. threaded connection shaft. DETAILED DESCRIPTION

[0019] The utility model will be further explained in detail in the following with the attached drawing and specific embodiment. EMBODIMENT

[0020] A kind of motor load for EMC test, as shown in Figures 1 to 5 It includes mounting shaft 2 connected with motor 4, and mounting shaft 2 top is connected with several blades 1 by blade connecting piece 8, and blade 1 is evenly arranged around the center axis of blade connecting piece 8, and motor 4 is connected with EMC test power connector 7 by motor power interface 6, and power supply is carried out to motor 4 by EMC test power connector 7.

[0021] Blade 1, blade connecting piece 8 and mounting shaft 2 are integrally formed, when needing to adjust the load size of blade 1, the appropriate load size is obtained by cutting part of the area of blade 1.

[0022] The bottom of the mounting shaft 2 is provided with a fixing hole 3 connected with the motor shaft 5, and the motor shaft 5 is inserted into the fixing hole 3 to complete the connection between the motor 4 and the mounting shaft 2.

[0023] The blade 1, the blade connecting piece 8 and the mounting shaft 2 can be completed by 3D printing, or can be processed by other materials convenient for processing.

[0024] Before testing, the blade 1 and the mounting shaft 2 are connected with the motor shaft 5 through the fixing hole 3 at the bottom of the mounting shaft 2, so that the motor 4 can drive the load to rotate when the motor 4 rotates.

[0025] During EMC testing, the load corresponding to the area is used according to the load obtained by setting the current and voltage. In this embodiment, since the blade 1 and the mounting shaft 2 are integrally formed, when adjusting the load, the appropriate load is obtained by cutting part of the area of the blade 1. During the cutting process, the blade 1 needs to be uniformly cut to ensure the balance of the motor 4.

[0026] In addition, when installing the load, the blade 1 with a larger load can be preferentially selected for installation, so that the appropriate load can be obtained by cutting the blade 1.

[0027] Then, the EMC test power connector 7 is correctly connected to the motor power interface 6, and the motor 4 is operated according to the set voltage and current, so that the motor 4 drives the load to rotate.

[0028] During the rotation of the motor 4 driving the blade 1, the blade 1 is hindered by the wind force, so that the motor runs with the load. The blade 1 is evenly distributed on the mounting shaft 2, which ensures the stable operation of the motor in forward and reverse rotation, uniform stress, and stable operation of the motor 4 with the load, thereby ensuring the accuracy of EMC testing. Embodiment

[0029] On the basis of embodiment 1, the blade 1 is detachably mounted on the blade connecting piece 8 and evenly arranged along the circumferential side of the blade connecting piece 8. The bottom of the blade connecting piece 8 is threadedly connected with the mounting shaft 2 through the threaded connecting shaft 9, and the assembly is simple.

[0030] The blade 1 can be connected with the blade connecting piece 8 by clamping. At this time, a plurality of mounting clamping grooves are evenly arranged on the blade connecting piece 8. The blade 1 is provided with a clamping plate connected with the mounting clamping groove. The blade 1 and the blade connecting piece 8 are firmly mounted through the cooperation of the mounting clamping groove and the clamping plate.

[0031] When the blade 1 is connected with the blade connecting piece 8, other structures that are easy to assemble can also be used for assembly.

[0032] When the size of the motor load needs to be adjusted, the number of blades on the blade connecting piece 8 is increased or decreased to adjust the motor load. When the number of blades is increased or decreased, the uniformity of the arrangement of the blades 1 needs to be ensured to ensure the stability of the motor operation.

[0033] The utility model provides a kind of motor load for EMC test, by being directly connected with the load of motor being set, so that in EMC test, motor can be loaded load under the condition of setting voltage, current, avoid motor idling, the influence of load applied by controller to EMC test, so that the EMC test result of motor is closer to actual situation, improve the accuracy of motor EMC test result, and load size can be adjusted according to demand, low in cost, simple structure, convenient operation.

Claims

1. A motor load for EMC testing, characterized by: It comprises a mounting shaft (2) connected with a motor (4), the top of the mounting shaft (2) is connected with a plurality of blades (1) through a blade connecting piece (8), and the blades (1) are uniformly arranged around the central axis of the blade connecting piece (8); the motor (4) is connected with an EMC test power connector (7) through a motor power interface (6).

2. The motor load for EMC testing according to claim 1, characterized in that: The bottom of the mounting shaft (2) is provided with a fixing hole (3) connected with a motor shaft (5) of the motor (4), the motor shaft (5) is inserted into the fixing hole (3) to connect the motor (4) with the mounting shaft (2).

3. The motor load for EMC testing according to claim 1, characterized in that: The blade (1), the blade connecting piece (8) and the mounting shaft (2) are integrally formed.

4. The motor load for EMC testing according to claim 1, characterized in that: The blade (1) is detachably mounted on the blade connecting piece (8), and the bottom of the blade connecting piece (8) is threadedly connected with the mounting shaft (2) through a threaded connecting shaft (9).

Images