Novel motor service life testing device

Abstract

The utility model discloses a novel motor life test device. The novel motor life test device comprises a bottom plate; one end of the supporting column is fixed with the bottom plate; the top plate is fixed with the other end of the support column and is provided with a through hole through which a screw rod of the tested motor passes; the guide assembly is fixed with the bottom plate; the pressing plate moves along the guide assembly and is fixed with the guide assembly; the spring is used for applying dynamic load to the tested motor, one end of the spring is matched with the bottom plate, and the other end of the spring is matched with the pressing plate; and the nut is used for connecting a screw of the tested motor and is connected with the pressing plate. According to the utility model, the service life of the motor is tested by applying a dynamic load, and the test time is shortened.

Description

Technical Field

[0001] The utility model relates to the field of motors, and in particular to a novel motor life test device. Background Art

[0002] As essential equipment for modern production and daily life, the lifespan of motors directly impacts their reliability and economic efficiency. To ensure stable operation and effectively extend the lifespan of motors over long periods of time, motor life testing is essential. This testing assesses motor lifespan and analyzes potential failure causes and improvement measures, providing a scientific basis for motor selection and use. This not only helps improve motor reliability and service life, but also ensures safe equipment operation and reduces the risk of accidents caused by motor failure.

[0003] The current practice is to run the motor through a set rotation cycle for a period of time. If the motor still functions normally, it is considered to have met the required service life. Motor life testing simulates the motor's operating conditions under actual road conditions, applying equivalent reinforcements to examine the motor's aging at the end of these tests. Existing technologies not only require long test durations but also require a fixed load driven by the motor. Without dynamic loads, accurate determination of the motor's lifespan is difficult. Utility Model Content

[0004] The utility model provides a novel motor life test device. The utility model tests the life of the motor by applying a dynamic load, thereby shortening the test time.

[0005] The technical solutions to the above technical problems are as follows:

[0006] A new type of motor life test device, including:

[0007] base plate;

[0008] A support column, one end of which is fixed to the base plate;

[0009] A top plate for connecting the motor under test, the top plate being fixed to the other end of the support column, and having a through hole for the screw of the motor under test to pass through;

[0010] A guide assembly, the guide assembly is fixed to the base plate;

[0011] A pressure plate moves along the guide assembly, the pressure plate being fixed to the guide assembly;

[0012] A spring that applies a dynamic load to the motor under test, with one end of the spring engaging the base plate and the other end engaging the pressure plate;

[0013] A nut used to connect the screw of the motor under test, the nut is connected to the pressure plate.

[0014] Furthermore, a first positioning step is provided on the bottom plate, a second positioning step is provided on the pressure plate, one end of the spring is sleeved on the first positioning step, and the other end of the spring is sleeved on the second positioning step.

[0015] Furthermore, the guide assembly includes a guide rod and a linear bearing. The two ends of the guide rod are respectively fixed to the bottom plate and the top plate. The linear bearing is slidably fitted with the guide rod, and the pressure plate is fixed to the linear bearing.

[0016] When conducting a life test on a motor, the screw rotates after the motor under test is powered on. The screw's rotational motion is converted into linear motion of the drive nut. When the nut moves downward, it presses down on the spring to compress it. The spring generates an elastic force applied to the nut. As the nut continues to move downward, the spring compression continues to increase, and the elastic force generated also increases, so that the motor under test is subjected to an alternating load, achieving the purpose of accelerating the life test. The life test device of the utility model does not require additional load. The purpose of accelerating the life test can be achieved by selecting a suitable spring in advance according to the power of the different motors under test. The utility model accelerates the motor life test through the alternating load of the spring, thereby improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an assembly diagram of a new type of motor life test device of the present utility model.

[0018] Figure 2 This is an exploded view of a new motor life test device of the present utility model.

[0019] Figure 3 This is a cross-sectional view of a novel motor life test device of the present utility model.

[0020] Symbols in the accompanying drawings:

[0021] Base plate 1, first positioning step 1a, first mounting hole 1b, second mounting hole 1c, support column 2, top plate 3, through hole 3a; motor mounting step 3b, first assembly hole 3c, second assembly hole 3d, third assembly hole 3e, pressure plate 5, second positioning step 5a, spring 6, nut 7, guide rod 8, linear bearing 9. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0025] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0026] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0027] like Figures 1 to 3 As shown, a new type of motor life test device of the present invention includes a base plate 1, a support column 2, a top plate 3, a guide assembly, a pressure plate 5, a spring 6, and a nut 7. The following describes each part and the relationship between them in detail.

[0028] The base plate 1 is rectangular and has a first positioning step 1a formed on it. The first positioning step 1a is annular and can be integrally formed with the base plate 1 or separately formed and secured to the base plate 1 with screws. The base plate 1 has a first mounting hole 1b and a second mounting hole 1c, both of which are stepped holes.

[0029] One end of the support column 2 is fixed to the base plate 1; after one end of the support column 2 is inserted into the first mounting hole 1b, the support column 2 and the base plate 1 are locked with screws. One end of the support column 2 is interference fit with the first mounting hole 1b. The support column 2 and the first mounting hole 1b are assembled by interference fit rather than clearance fit, in order to better ensure the position of the guide assembly, thereby further preventing uneven load.

[0030] The top plate 3 is used to connect the motor A under test. The top plate 3 is provided with a through hole 3a for the screw B of the motor A under test to pass through; the top plate 3 is provided with a motor mounting step 3b, the through hole 3a passes through the motor mounting step, and the motor mounting step 3b is provided with a first assembly hole 3c. During assembly, the screw B of the motor A under test is passed through the through hole 3a, and after the housing of the motor A under test is matched with the motor mounting step 3b, the housing of the motor A under test is threadedly connected to the first assembly hole 3c with a screw, so that the motor A under test and the motor mounting step 3b are fastened into one.

[0031] The top plate 3 is fixed to the other end of the support column 2. A second assembly hole 3d and a third assembly hole 3e are provided on the top plate 3. The second assembly hole 3d is a stepped hole. After the other end of the support column 2 is inserted into the second assembly hole 3d, screws are used to lock the support column 2 and the top plate 3. The support column 2 and the second assembly hole 3d are assembled by interference fit rather than clearance fit in order to better ensure the position of the guide component and further prevent uneven load.

[0032] The guide assembly is fixed to the base plate 1, and the pressure plate 5 moves along the guide assembly. The pressure plate 5 is fixed to the guide assembly. The guide assembly includes a guide rod 8 and a linear bearing 9. The two ends of the guide rod 8 are respectively fixed to the base plate 1 and the top plate 3. One end of the guide rod 8 is interference fit with the second mounting hole 1c, and the other end of the guide rod 8 is interference fit with the third assembly hole 3e. One end of the guide rod 8 is pressed into the second mounting hole 1c and one end of the guide rod 8 is pressed into the third assembly hole 3e by a press-fit method. The linear bearing 9 slides with the guide rod 8, and the pressure plate 5 is fixed to the linear bearing 9. The pressure plate 5 is sleeved on the linear bearing 9. The pressure plate 5 and the linear bearing 9 are fixed by welding, or two clamping nuts are used to thread the pressure plate 5 with the linear bearing 9, and the pressure plate 5 is located between the two clamping nuts.

[0033] The spring 6 applies a dynamic load to the motor A under test. One end of the spring 6 cooperates with the base plate 1, and the other end of the spring 6 cooperates with the pressure plate 5. Since a first positioning step 1a is provided on the base plate 1 and a second positioning step 5a is provided on the pressure plate 5, one end of the spring 6 is sleeved on the first positioning step 1a, and the other end of the spring 6 is sleeved on the second positioning step 5a.

[0034] The nut 7 is used to connect the screw B of the motor A under test, and the nut 7 is connected to the pressure plate 5. In this embodiment, the nut 7 is preferably connected to the pressure plate 5 by screws, which is convenient for installation before testing.

[0035] The screw B of the motor A under test is passed through the through hole 3a, the nut 7 is threadedly connected to the screw B, the nut 7 is fixed to the pressure plate 5 by screws, and the housing of the motor A under test is fastened to the motor mounting step 3b by screws. When the motor under test is subjected to a life test, the screw B rotates after the motor A under test is powered on, and the rotational motion of the screw B is converted into a linear motion of the driving nut 7. When the nut 7 moves downward, it presses down the spring 6 to compress it. The spring 6 generates an elastic force applied to the nut 7, and as the nut 7 continues to move downward, the compression of the spring 6 continues to increase, and the elastic force generated also increases, so that the motor A under test is subjected to an alternating load, achieving the effect of accelerating the life test. The life test device of the utility model does not require additional load. The purpose of accelerating the life test can be achieved by selecting a suitable spring 6 in advance according to the power of the motor A under test.

Claims

1. A new type of motor life test device, characterized in that: include: Bottom plate (1); A support column (2), one end of the support column (2) is fixed to the base plate (1); A top plate (3) for connecting to the motor under test, the top plate (3) being fixed to the other end of the support column (2), and a through hole (3a) for the screw of the motor under test to pass through being provided on the top plate (3); A guide assembly, the guide assembly being fixed to the base plate (1); a pressing plate (5) moving along the guide assembly, the pressing plate (5) being fixed to the guide assembly; a spring (6) for applying a dynamic load to the motor under test, wherein one end of the spring (6) is engaged with the base plate (1) and the other end of the spring (6) is engaged with the pressure plate (5); A nut (7) is used for connecting a screw rod of a motor to be tested, and the nut (7) is connected to a pressing plate (5).

2. A novel motor life test device according to claim 1, characterized in that: A first positioning step (1a) is provided on the bottom plate (1), a second positioning step (5a) is provided on the pressure plate (5), one end of the spring (6) is sleeved on the first positioning step (1a), and the other end of the spring (6) is sleeved on the second positioning step (5a).

3. A novel motor life test device according to claim 1, characterized in that: The guide assembly comprises a guide rod (8) and a linear bearing (9), the two ends of the guide rod (8) are respectively fixed to the bottom plate (1) and the top plate (3), the linear bearing (9) and the guide rod (8) are slidably matched, and the pressure plate (5) is fixed to the linear bearing (9).

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