Flexible tool clamp for new energy automobile motor test

Abstract

The utility model discloses a flexible work fixture for new energy automobile motor testing, which comprises a mounting disc and a shaft connecting piece, the mounting disc is connected with a tested motor, the shaft connecting piece enables a motor shaft of the tested motor and a dynamometer to be in transmission connection, the mounting disc is provided with a variable mounting part used for being connected with the tested motor, and the variable mounting part is connected with the tested motor. Through the arrangement, the tool clamp with certain installation universality is arranged between the motor needing to be tested and the dynamometer, so that the beneficial effect that a plurality of tested motors can be conveniently clamped and measured is realized.

Description

Technical Field

[0001] The present application relates to the field of mechanical transmission technology, and in particular to a flexible tooling fixture for testing new energy vehicle motors. Background Art

[0002] As the heart of new energy vehicles, the motor is responsible for converting battery power into mechanical energy to drive new energy vehicles. It is an indispensable part of new energy vehicles, and its reliability and performance are particularly important. Therefore, evaluating the quality and reliability of new energy vehicle motors by simulating actual road conditions is a necessary step for major automakers to develop motors.

[0003] At present, motor testing is generally divided into assembly testing and single motor testing, but no matter which test is used, the motor under test needs to be connected to the dynamometer, so the connection tooling is particularly important, especially when collecting high-speed motor data, which places higher requirements on the tooling. However, since there is no unified standard for the shape of the motor housing, with the development of a large number of new energy vehicle motors, the shape of their motor housings is also different, which puts higher requirements on the fixed installation during motor testing. Designing a tooling fixture that meets the connection requirements and has strong structural adaptability is one of the key issues that need to be solved. Summary of the invention

[0004] In view of the above problems, the present application proposes a flexible fixture for testing new energy vehicle motors. By setting a fixture with certain installation versatility between the motor to be tested and the dynamometer, the beneficial effect of convenient clamping and measuring of multiple motors to be tested is achieved; the flexible fixture for testing new energy vehicle motors is specifically implemented by the following technical solutions:

[0005] A flexible tooling fixture for testing a new energy vehicle motor comprises: a mounting plate and a shaft connector, wherein the mounting plate is connected to a motor under test, the shaft connector drives and connects a motor shaft of the motor under test and a dynamometer, and a variable mounting portion for connecting to the motor under test is provided on the mounting plate.

[0006] It is further configured that the variable mounting portion includes a variable mounting hole for allowing a fastener to pass through, and the variable mounting hole is provided in plurality, and the plurality of variable mounting holes are circumferentially distributed on the mounting disk with the central axis of the mounting disk as the center. Through this configuration, the mounting disk can be selected according to the size and model of the motor to be measured, and the variable mounting hole in the matching position can be selected, and the mounting disk can be fixedly connected to the housing of the motor to be measured through fasteners, so that the installation range is larger and more convenient.

[0007] It is further arranged that the outer periphery of the mounting plate is provided with threaded fixing holes. Through this arrangement, the mounting plate and the housing of the motor to be tested can be relatively fixed, and the overall structure is more stable.

[0008] It is further arranged that the outer periphery of the mounting plate is provided with positioning holes. Through this arrangement, the mounting plate and the housing of the motor to be tested can be relatively fixed, and the overall structure is more stable.

[0009] It is further arranged that the mounting plate is provided with an opening for the motor shaft of the motor to be measured to pass through. This arrangement prevents the motor shaft of the motor to be measured from contacting the mounting plate.

[0010] It is further configured that the shaft connecting member is configured as a spline sleeve, the spline sleeve includes a mounting portion and a connecting portion, the mounting portion and the connecting portion are integrally formed, the mounting portion is transmission-connected to the dynamometer, and the connecting portion is spline-connected to the motor under test. Through this configuration, the connection between the shaft connecting member and the shaft of the motor under test is facilitated, the overall operation is simpler, and the use process is more stable.

[0011] It is further arranged that a plurality of threaded mounting holes are arranged on the mounting portion, and the mounting portion is transmission-connected to the dynamometer by means of fasteners cooperating with the threaded mounting holes. Through this arrangement, the dynamometer and the shaft connecting member are firmly installed and the transmission is stable, so that the overall structure is stable.

[0012] It is further arranged that the connecting portion is arranged as an internal spline, which is matched with the external spline motor shaft of the motor under test. Through this arrangement, the connecting portion is matched with the motor shaft of the motor under test, which is more integrated and convenient for installation.

[0013] It is further arranged that the connecting portion is arranged as an external spline, which is matched with the internal spline motor shaft of the motor under test. Through this arrangement, the connecting portion is matched with the motor shaft of the motor under test, which is more integrated and convenient for installation.

[0014] The flexible tooling fixture for testing new energy vehicle motors as described above consists of a mounting plate and a spline sleeve. The mounting plate is designed with a variable mounting hole, which is fixedly connected to the dynamometer. Under the conditions of the same dynamometer, the universality of the variable mounting hole structure is ensured while ensuring sufficient connection strength. The spline sleeve cooperates with the spline shaft of the motor under test to transmit torque. Due to the diversity of the motors under test and the fixed relative position of the dynamometer, the length of the spline sleeve can be flexibly adjusted according to actual conditions, and the internal spline of the spline sleeve can be quickly designed according to the external spline parameters of the spline shaft of the motor under test. The size and fit can be flexibly designed, which greatly enhances the design flexibility, shortens the tooling design cycle, and significantly reduces the test time of the motor under test. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 A schematic diagram of the assembly of a flexible fixture for testing a new energy vehicle motor provided in an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the mounting plate structure of a flexible fixture for testing a new energy vehicle motor provided in an embodiment of the present application;

[0018] Figure 3 This is a schematic diagram of the shaft connection structure of the flexible fixture for testing new energy vehicle motors provided in an embodiment of the present application.

[0019] Among them, the reference numerals in the figure are:

[0020] 1. Mounting plate; 2. Shaft connecting part; 5. Variable mounting part; 6. Variable mounting hole; 7. Threaded fixing hole; 8. Positioning hole; 9. Opening hole; 10. Spline sleeve; 11. Mounting part; 12. Connecting part; 13. Threaded mounting hole; 14. Internal spline. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0022] The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] The present application is further described with reference to the accompanying drawings and specific implementation methods:

[0024] Please also read Figures 1 to 3 A flexible tooling fixture for testing new energy vehicle motors includes: a mounting plate 1 and a shaft connecting member 2, wherein the mounting plate 1 is connected to the motor under test, and the shaft connecting member 2 drives and connects the motor shaft of the motor under test and the dynamometer, and a variable mounting portion 5 for connecting to the motor under test is provided on the mounting plate 1.

[0025] See also Figure 1 and Figure 2In this embodiment, the motor under test is fixedly connected to the mounting plate 1, the motor shaft of the motor under test rotates, and the shaft connector rotates; the variable mounting portion 5 includes a variable mounting hole 6 for a fastener to pass through, and the variable mounting hole 6 is provided in a plurality, and the plurality of variable mounting holes 6 are circumferentially distributed on the mounting plate 1 with the central axis of the mounting plate 1 as the center. The variable mounting holes 6 provided in this way can be installed in different positions according to different factors such as the overall size of the motor under test and the position of the mounting holes, so as to be convenient for various types of motors under test; the outer periphery of the mounting plate 1 is provided with a threaded fixing hole 7, which is fixed to the housing of the motor under test to achieve relative fixation of the motor under test and achieve the purpose of measurement; the outer periphery of the mounting plate 1 is provided with a positioning hole 8, which is convenient for the above-mentioned threaded fixing hole 7 to be fastened and connected; the mounting plate 1 is provided with an opening 9 for the motor shaft of the motor under test to pass through, and the opening 9 is larger than the motor shaft of the motor under test and the shaft connector 2, so as to prevent the motor shaft from rubbing against the shaft connector 2 and the opening 9, thereby causing measurement errors.

[0026] See also Figure 1 and Figure 3 In this embodiment, the shaft connecting member 2 is configured as a spline sleeve 10, and the spline sleeve 10 includes a mounting portion 11 and a connecting portion 12, and the mounting portion 11 and the connecting portion 12 are integrally formed, and the mounting portion 11 is transmission-connected to the dynamometer, and the connecting portion 12 is spline-connected to the motor under test. In this configuration, one side of the spline sleeve 10 is synchronously transmission-connected to the motor shaft of the motor under test, and the other side is connected to the input end of the dynamometer, so as to realize the function of transmitting the force of the motor under test to the dynamometer; a plurality of threaded mounting holes 13 are provided on the mounting portion 11 The mounting portion 11 is transmission-connected to the dynamometer by means of a fastener cooperating with the threaded mounting hole 13. With such a configuration, the connection requirements between the mounting portion 11 and the dynamometer are relatively high, and a fixed transmission ratio needs to be achieved to prevent errors in the measurement results; the connecting portion 12 is configured as an internal spline 14, which is compatible with the external spline motor shaft of the motor under test; the connecting portion 12 is configured as an external spline, which is compatible with the internal spline 14 motor shaft of the motor under test. With such a configuration, the spline sleeve 10 can be replaced corresponding to the motor shaft of the motor under test, thereby increasing the range of adaptation.

[0027] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A flexible fixture for testing new energy vehicle motors, characterized in that: The invention comprises a mounting plate (1) and a shaft connecting member (2), wherein the mounting plate (1) is connected to a motor to be measured, and the shaft connecting member (2) is drivingly connected to the motor shaft of the motor to be measured and a dynamometer, and the mounting plate (1) is provided with a variable mounting portion (5) for connecting to the motor to be measured; the variable mounting portion (5) comprises a variable mounting hole (6) for a fastener to pass through, and the variable mounting hole (6) is provided in plurality, and the plurality of variable mounting holes (6) are circumferentially distributed on the mounting plate (1) with the central axis of the mounting plate (1) as the center.

2. A flexible fixture for testing new energy vehicle motors according to claim 1, characterized in that The outer periphery of the mounting plate (1) is provided with a threaded fixing hole (7).

3. A flexible fixture for testing a new energy vehicle motor according to claim 1, characterized in that The outer periphery of the mounting plate (1) is provided with positioning holes (8).

4. A flexible fixture for testing a new energy vehicle motor according to claim 1, characterized in that The mounting plate (1) is provided with an opening (9) for the motor shaft of the motor to be tested to pass through.

5. A flexible fixture for testing a new energy vehicle motor according to claim 1, characterized in that The shaft connecting member (2) is configured as a spline sleeve (10), the spline sleeve (10) comprising a mounting portion (11) and a connecting portion (12), the mounting portion (11) and the connecting portion (12) being integrally formed, the mounting portion (11) being transmission-connected to a dynamometer, and the connecting portion (12) being spline-connected to a motor to be tested.

6. A flexible fixture for testing a new energy vehicle motor according to claim 5, characterized in that The mounting portion (11) is provided with a plurality of threaded mounting holes (13), and the mounting portion (11) is transmission-connected to the dynamometer by means of fasteners cooperating with the threaded mounting holes (13).

7. A flexible fixture for testing a new energy vehicle motor according to claim 5, characterized in that The connecting portion (12) is configured as an internal spline (14) and is adapted to the external spline motor shaft of the motor to be tested.

8. The flexible fixture for testing a new energy vehicle motor according to claim 5 is characterized in that The connecting portion (12) is configured as an external spline, which is compatible with the internal spline (14) of the motor shaft of the motor to be tested.

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