Motor load testing device

Abstract

The utility model discloses a motor load testing device. The motor load testing device comprises a base station used for bearing and fixing a mobile station and a lifting platform; the moving table is provided with a base part, a moving part and a bearing part; the base part is fixed on one side of the base station; the moving part can move along the Y-axis guide rail by rotating the first hand wheel and can also move along the X-axis guide rail by rotating the second hand wheel; the bearing part is used for bearing and fixing a tested motor; the lifting table is fixed to the other side of the base table and provided with a third hand wheel, and the lifting table can be driven to move up and down by rotating the third hand wheel. The brake is fixed on the lifting platform top; the coupler is connected with a brake output shaft. The device is simple in structure, convenient to operate and low in manufacturing cost. The method is especially suitable for brushless direct current motor load testing, and can avoid the technical problems of difficult operation, difficult alignment connection, potential safety hazards and the like caused by manual operation. According to the utility model, the motor and the load can be quickly and accurately connected and fixed through the driving of the hand wheel.

Description

Technical Field

[0001] The utility model relates to the testing field, in particular to a motor load testing device. Background Art

[0002] The motor load test device is generally included in the motor performance test system, which is also referred to as the "motor dynamometer" in the industry. A professional motor dynamometer can test the entire performance curve of the motor from no-load to stalled. While performing performance tests on the motor at no-load and load points, it detects a series of parameters such as input voltage, current, power, power factor, output torque, speed, output power, efficiency, etc. It is also equipped with computer control technology and has complex functions such as automatic drawing of motor characteristic curves, speed feedback control, torque compensation control, and constant torque and speed.

[0003] However, due to the diversity of motors, the motor dynamometers are also diverse. Even relatively general dynamometers need to be customized with different fixtures according to the characteristics of the motor being tested to adapt to the general test platform. Furthermore, professional motor dynamometers are also very expensive. For some companies or users, the high cost may not be acceptable. They may just need a device that can provide a rough basic load to meet the basic test.

[0004] Accordingly, the output shaft of the brushless DC motor needs to be precisely and fixedly connected to the load to ensure safety when working at high speed. However, it is difficult to quickly align the motor output shaft and the load manually.

[0005] At present, the common solution is to place the brushless DC motor on a fixed table and then manually connect the load to the motor output shaft. This operation method makes the brushless DC motor testing time-consuming and labor-intensive, the test cycle is slow, and the handling and installation also poses a safety hazard. Utility Model Content

[0006] A series of simplified concepts are introduced in the utility model content section, which are all simplifications of the prior art in the field, which will be further described in detail in the specific implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and necessary technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0007] The technical problem to be solved by the utility model is to provide a motor load testing device which can be used for various motors and has simple structure, convenient operation, quick and accurate connection and fixation.

[0008] In order to solve the above technical problems, the utility model provides a motor load testing device, comprising:

[0009] A base 1, which is used to carry a fixed moving platform 2 and a lifting platform 3;

[0010] A mobile platform 2, which has a base portion 2.1, a moving portion 2.2 and a carrying portion 2.3;

[0011] The base 2.1 is fixed to one side of the base 1;

[0012] The moving part 2.2 can be moved along the Y-axis guide rail by rotating the first hand wheel 2.4, and can also be moved along the X-axis guide rail by rotating the second hand wheel 2.5;

[0013] The bearing part 2.3 is used for bearing and fixing the motor under test;

[0014] The lifting platform 3 is fixed on the other side of the base 1 and has a third hand wheel 3.1. The lifting platform can be driven to move up and down by rotating the third hand wheel 3.1.

[0015] The brake 4 is fixed on the top of the lifting platform 3; the brake can select a hysteresis brake to provide a simulated load for the motor under test;

[0016] A coupling 5 connected to the output shaft of the brake 4; the coupling is configured according to the shaft diameter of the motor to be tested and is installed and fixed to the shaft of the hysteresis brake;

[0017] Preferably, the motor load test device is further improved, and the bearing part 2.3 is a bench vise. The bench vise is a universal clamp for the motor to be tested, which is mounted and fixed on the table of the moving table 2. As long as the motor to be tested can be stably clamped so that the shaft of the motor to be tested extends horizontally from the clamping opening, it is not important where the motor to be tested is clamped on the bench vise.

[0018] Preferably, the motor load testing device is further improved, and the moving part 2.2 comprises:

[0019] A first movable platform part 2.2.1, which is driven by a first hand wheel 2.4 and can move along the Y-axis guide rail;

[0020] A Y-axis guide rail formed on the base 2.1;

[0021] A second movable platform part 2.2.2, which is driven by a second hand wheel 2.5 and can move along the X-axis guide rail;

[0022] An X-axis guide rail formed on the first movable stage portion 2.2.1;

[0023] The carrying part 2.3 is fixed on the second moving platform part 2.2.2.

[0024] Preferably, the motor load testing device is further improved, and the base 1 is an aluminum alloy base plate, which is formed into a honeycomb breadboard structure, and a matrix of circular holes is formed thereon for supporting the fixed moving platform 2 and the lifting platform 3.

[0025] Preferably, the motor load test device is further improved, and a guide structure is formed at the shaft hole of the coupling 5. The guide structure can facilitate the connection between the motor output shaft and the coupling, avoid rigid collision between the coupling and the motor output shaft caused by slight errors, and protect both the motor and the coupling.

[0026] Preferably, the motor load testing device is further improved so that the guide structure is formed as a chamfer at the shaft opening.

[0027] Preferably, the motor load test device is further improved to further include: an elastic calibration member;

[0028] The elastic calibration piece is formed into a strip or stick shape and is pasted on the side wall of the output shaft of the motor to be tested.

[0029] Preferably, the motor load test device, the elastic calibration piece is further improved;

[0030] The elastic calibration piece is formed into a strip or stick shape, and its end is adhered to the end face of the output shaft of the motor to be measured.

[0031] The above two elastic calibration parts have the same function, which is to form a pre-contact between the elastic calibration part and the coupling to avoid rigid collision between the motor output shaft and the coupling. When the elastic calibration part forms pre-contact with the coupling, because the elastic calibration part can be deformed, it will not cause damage to the coupling. Accordingly, the elastic calibration part can be made smaller in size, such as a rubber rod with a diameter of 1CM and a length of 5CM, so that the elastic calibration part and the coupling can be transported to a relatively close position first, and then the position can be further fine-tuned, and then connected and locked after being in place.

[0032] Preferably, the motor load testing device is further improved so that the elastic calibration piece is a rubber rod.

[0033] The utility model has the advantages of simple structure, convenient operation and low manufacturing cost, and is particularly suitable for brushless DC motor load testing, and can avoid technical problems such as difficulty in operation, difficulty in alignment and connection, and potential safety hazards caused by manual operation.

[0034] The utility model can realize the quick connection and fixation of the motor and the load quickly and accurately through the hand wheel drive. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings of the present utility model are intended to illustrate the general characteristics of the methods, structures and / or materials used in specific exemplary embodiments of the present utility model, and to supplement the description in the specification. However, the drawings of the present utility model are schematic diagrams not drawn to scale, and thus may not accurately reflect the precise structure or performance characteristics of any given embodiment. The drawings of the present utility model should not be interpreted as limiting or restricting the range of values ​​or properties covered by the exemplary embodiments of the present utility model. The present utility model is further described in detail below in conjunction with the drawings and specific embodiments:

[0036] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0037] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0038] Figure 3 This is a schematic diagram of the structure of the utility model Figure 3 .

[0039] Description of Reference Numerals

[0040] Abutment 1

[0041] Mobile Station 2

[0042] Lifting platform 3;

[0043] Mobile Station 2

[0044] Base 2.1

[0045] Mobile 2.2

[0046] First mobile station unit 2.2.1

[0047] 2.2.2 Second Mobile Station Unit

[0048] Load-bearing part 2.3

[0049] First hand wheel 2.4

[0050] Second hand wheel 2.5

[0051] Lift 3

[0052] Third hand wheel 3.1

[0053] Brake 4

[0054] Coupling 5. DETAILED DESCRIPTION

[0055] The following is an explanation of the implementation of the utility model by specific specific embodiments, and those skilled in the art can fully understand the other advantages and technical effects of the utility model from the content disclosed in this specification. The utility model can also be implemented or applied through different specific embodiments, and the details in this specification can also be applied based on different viewpoints, and various modifications or changes can be made without deviating from the general design concept of the utility model. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. The following exemplary embodiments of the utility model can be implemented in a variety of different forms and should not be interpreted as being limited to the specific embodiments described here. It should be understood that these embodiments are provided to make the disclosure of the utility model thorough and complete, and to fully convey the technical solutions of these exemplary specific embodiments to those skilled in the art. It should be understood that when an element is referred to as "connected" or "coupled" to another element, the element can be directly connected or coupled to another element, or there can be an intermediate element. The difference is that when an element is referred to as "directly connected" or "directly coupled" to another element, there is no intermediate element. In all the drawings, the same reference numerals always represent the same element.

[0056] First embodiment;

[0057] refer to Figure 1 Combination Figure 2 and Figure 3 As shown, the utility model provides a motor load testing device, comprising:

[0058] A base 1, which is used to carry a fixed moving platform 2 and a lifting platform 3;

[0059] A mobile platform 2, which has a base portion 2.1, a moving portion 2.2 and a carrying portion 2.3;

[0060] The base 2.1 is fixed to one side of the base 1;

[0061] The moving part 2.2 can be moved along the Y-axis guide rail by rotating the first hand wheel 2.4, and can also be moved along the X-axis guide rail by rotating the second hand wheel 2.5;

[0062] The bearing part 2.3 is used for bearing and fixing the motor under test;

[0063] The lifting platform 3 is fixed on the other side of the base 1 and has a third hand wheel 3.1. The lifting platform can be driven to move up and down by rotating the third hand wheel 3.1.

[0064] A brake 4, which is fixed on the top of the lifting platform 3;

[0065] A coupling 5 connected to the output shaft of the brake 4;

[0066] The base 1 is an aluminum alloy substrate, which is formed into a honeycomb breadboard structure, and a matrix of circular holes is formed on it for supporting the fixed moving platform 2 and the lifting platform 3;

[0067] Among them, the bearing part 2.3 is selected to use a bench vise.

[0068] Second embodiment;

[0069] refer to Figure 3 As shown, the utility model provides a moving part that can be used in the first embodiment as a preferred implementation of the moving part, specifically including:

[0070] A first movable platform part 2.2.1, which is driven by a first hand wheel 2.4 and can move along the Y-axis guide rail;

[0071] A Y-axis guide rail formed on the base 2.1;

[0072] A second movable platform part 2.2.2, which is driven by a second hand wheel 2.5 and can move along the X-axis guide rail;

[0073] An X-axis guide rail formed on the first movable stage portion 2.2.1;

[0074] The carrying part 2.3 is fixed on the second moving platform part 2.2.2.

[0075] Second embodiment;

[0076] The third embodiment of the utility model is a further improvement on the above-mentioned first embodiment, and the same parts are not repeated here.

[0077] A guide structure is formed at the shaft hole of the coupling 5, and the guide structure is a chamfer formed at the shaft opening.

[0078] Third embodiment;

[0079] The third embodiment of the utility model is a further improvement on the above-mentioned first embodiment or second embodiment, and the same parts are not repeated here, and further comprises: an elastic calibration member;

[0080] The elastic calibration piece is formed into a strip or stick shape and is pasted on the side wall of the output shaft of the motor to be tested. For example, the elastic calibration piece is a rubber stick pasted on the side wall of the output shaft of the motor to be tested.

[0081] Fourth embodiment;

[0082] The third embodiment of the utility model is a further improvement on the above-mentioned first embodiment or second embodiment, and the same parts are not repeated here, and further comprises: an elastic calibration member;

[0083] The elastic calibration piece is formed into a strip or stick shape, and its end is pasted on the end face of the output shaft of the motor to be measured. For example, the elastic calibration piece is a rubber stick pasted on the end face of the output shaft of the motor to be measured.

[0084] Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. It will also be understood that, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant field, and not interpreted in an ideal or overly formal sense.

[0085] The present invention is described in detail above through specific implementation methods and examples, but these do not constitute limitations of the present invention. Without departing from the principle of the present invention, those skilled in the art may make many modifications and improvements, which should also be considered as the protection scope of the present invention.

Claims

1. A motor load testing device, characterized in that: include: A base platform (1) used for supporting a fixed moving platform (2) and a lifting platform (3); A mobile platform (2), comprising a base (2.1), a moving part (2.2) and a bearing part (2.3); The base (2.1) is fixed on one side of the base (1); A moving part (2.2) which can be moved along the Y-axis guide rail by rotating a first hand wheel (2.4) and can also be moved along the X-axis guide rail by rotating a second hand wheel (2.5); A bearing part (2.3), which is used to bear and fix the motor under test; A lifting platform (3) is fixed on the other side of the base platform (1) and has a third hand wheel (3.1). The lifting platform can be driven to move up and down by rotating the third hand wheel (3.1); A brake (4) fixed on the top of the lifting platform (3); A coupling (5) is connected to the output shaft of the brake (4).

2. The motor load testing device according to claim 1, characterized in that: The base platform (1) is an aluminum alloy base plate, which is formed into a honeycomb breadboard structure, and has a matrix of circular holes formed thereon for supporting a fixed moving platform (2) and a lifting platform (3).

3. The motor load testing device according to claim 1, characterized in that: The bearing part (2.3) is a bench vice.

4. The motor load testing device according to claim 1, characterized in that: The mobile part (2.2) comprises: A first movable platform (2.2.1), which is driven by a first hand wheel (2.4) and can move along the Y-axis guide rail; A Y-axis guide rail formed on the base (2.1); A second movable platform (2.2.2), which is driven by a second hand wheel (2.5) and can move along the X-axis guide rail; An X-axis guide rail formed on the first moving platform portion (2.2.1); The bearing part (2.3) is fixed on the second moving platform part (2.2.2).

5. The motor load testing device according to claim 1, characterized in that: A guide structure is formed at the shaft hole of the coupling (5).

6. The motor load testing device according to claim 5, characterized in that: The guide structure is a chamfer formed at the shaft opening.

7. The motor load testing device according to claim 1, characterized in that: Also includes: Elastic calibration pieces; The elastic calibration piece is formed into a strip or stick shape and is pasted on the side wall of the output shaft of the motor to be tested.

8. The motor load testing device according to claim 1, characterized in that: Also includes: Elastic calibration pieces; The elastic calibration piece is formed into a strip or stick shape, and its end is adhered to the end face of the output shaft of the motor to be measured.

9. The motor load testing device according to claim 7 or 8, characterized in that: The elastic calibration piece is a rubber rod.

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