A motor offline all-in-one detection device for electric vehicles

Abstract

The utility model discloses a motor off line all -in -one detection device for electric automobile, include: fixed base, positioning pin is equipped with multiple sets, and multiple sets positioning pin with the bolt hole of the distribution on the motor end cover of test piece motor corresponds, handle, install in the center hole, for splicing in the inner spline of the motor of being tested, detect motor end cover bolt hole, inner spline, motor end cover stop mouth relative position and coaxiality, the utility model discloses can fast, effective detection motor inner spline, motor stop mouth, motor mounting point three positioning concentricity integration detection, need not to split detection single component, and can guarantee motor and speed reducer can smoothly and guarantee precision, effectively guarantee motor and speed reducer assembly adaptability, avoid the shaft step abnormal sound and rework problem caused by positioning deviation, reduce production cost loss, another detection speed is fast, promote motor off line's quality and tempo, save manpower and material resources, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of motor testing technology, specifically to a multi-functional testing device for the off-line testing of electric vehicle motors. Background Technology

[0002] In the production line testing of electric vehicle drive motors, the coaxiality of the spline and stop, as well as the overall coaxiality of the end cap and motor shaft after assembly, are key indicators to ensure the compatibility between the motor and the reducer.

[0003] Current testing methods typically use dial indicators. This involves fixing the dial indicator's base to a flat surface, then securing the indicator to the base bracket. The dial indicator rotates one revolution along the spline shaft or along the stop, measuring the specific value before determining if it meets requirements. This process is cumbersome, time-consuming, and labor-intensive. Furthermore, the distance between the bolt holes and the spline is difficult to measure and is often not tested, leading to mismatches between the motor and reducer, resulting in rework and wasted resources. Additionally, when the motor end cover and motor shaft are assembled, the goal is to ensure coaxiality, meaning the centerlines of the two components must be aligned. Testing the coaxiality of only one component is insufficient to confirm the coaxiality of both components. Therefore, we need to propose a multi-functional testing device for electric vehicle motors. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-functional testing device for motors used in electric vehicles. This device eliminates the need to disassemble individual components for testing and ensures that the motor and reducer can be smoothly assembled with high precision. It effectively guarantees the compatibility of the motor and reducer assembly, avoids shaft noise and rework problems caused by positioning deviations, reduces production cost losses, improves the quality and cycle time of motor assembly, saves manpower and resources, and increases production efficiency, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-functional testing device for electric vehicle motors includes: a fixed base; multiple sets of positioning pins, each set corresponding to bolt holes distributed on the motor end cover of the test piece motor, all sets of positioning pins being located inside the fixed base; a central circular hole located at the center of the fixed base; and a handle installed in the central circular hole for insertion into the internal spline of the test piece motor to test the relative position and coaxiality of the bolt holes, internal spline, and motor end cover stop of the motor end cover.

[0007] Preferably, the multiple sets of positioning pins are arranged in a circular array with the center of the fixed seat as the reference.

[0008] Preferably, the side of the fixed base is fixedly connected with multiple sets of extension blocks corresponding to the positioning pin. The fixed base and the extension blocks are both provided with mounting holes. One end of the positioning pin passes through the mounting hole and extends to the outside of the extension block.

[0009] Preferably, it also includes an extension ring, which is fixedly connected to the side of the fixing base, and the inner hole of the extension ring is in communication with the central circular hole.

[0010] Preferably, the handle includes a hand grip, a detection stop, and an external spline;

[0011] One side of the detection stop is fixedly connected to the end of the handheld part, and one end of the external spline is fixedly connected to the other side of the detection stop. The detection stop is located inside the central circular hole.

[0012] Preferably, the surface of the detection stop is in contact with the inner wall of the central circular hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention enables rapid and effective integrated testing of the concentricity of three positioning components in a motor: the internal spline, the motor stop, and the motor mounting point. It eliminates the need to disassemble individual components for testing and ensures smooth assembly of the motor and reducer with guaranteed accuracy. This effectively guarantees the compatibility of the motor and reducer assembly, avoids shaft noise and rework issues caused by positioning deviations, reduces production costs, and improves the quality and cycle time of motor production. Furthermore, its fast testing speed enhances the overall production efficiency and saves manpower and resources. Attached Figure Description

[0015] Figure 1 This is one of the structural schematic diagrams of the fixed base and handle of this utility model in their combined state;

[0016] Figure 2 This is the second structural schematic diagram of the fixed base and handle of this utility model in their combined state;

[0017] Figure 3 This is a half-sectional structural diagram of the present invention when the fixing base and handle are combined.

[0018] Figure 4 This is a schematic diagram of the handle of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure during the testing process of this utility model;

[0020] Figure 6 This is a half-section structural diagram of the present invention during the testing process.

[0021] In the figure: 1. Fixed base; 2. Extension block; 3. Mounting hole; 4. Positioning pin; 5. Extension ring; 6. Center hole; 7. Handle; 71. Handheld part; 72. Inspection stop; 73. External spline; 8. Test piece motor; 9. Internal spline; 10. Motor end cover stop. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 This utility model provides a technical solution:

[0024] A multi-functional testing device for electric vehicle motors includes: a fixed base 1; multiple sets of positioning pins 4, each set corresponding to bolt holes distributed on the motor end cover of the test piece motor, all sets of positioning pins 4 being located inside the fixed base 1; a central circular hole 6, located at the center of the fixed base 1; and a handle 7, installed in the central circular hole 6, for insertion into the internal spline of the test piece motor to detect the relative positions and coaxiality of the bolt holes, internal spline, and motor end cover stop of the motor end cover.

[0025] In an optional embodiment: such as Figure 1 As shown, multiple sets of positioning pins 4 are arranged in a circular array with the center of the fixed seat 1 as the reference.

[0026] It should be noted that the position of the positioning pin 4 is set according to the corresponding position of the bolt hole on the motor end cover. At this time, multiple positioning pins 4 can be directly inserted into the bolt hole of the corresponding motor being tested, which serves to install the fixing seat 1 and to make the center of the central hole 6 and the center of the inner spline 9 be on the same horizontal axis, so as to prevent the installation position of the fixing seat 1 from being offset and affecting subsequent testing.

[0027] In an optional embodiment: such as Figures 1 to 3 As shown, the side of the fixed base 1 is fixedly connected with multiple sets of extension blocks 2 corresponding to the positioning pin 4. The fixed base 1 and the extension blocks 2 are both provided with mounting holes 3. One end of the positioning pin 4 passes through the mounting hole 3 and extends to the outside of the extension block 2.

[0028] It should be noted that, with the extension block 2, when the testing device is installed on the motor end cover of the test piece motor, the positioning pin 4 is inserted into the bolt hole on the motor end cover of the test piece motor, and the end of the extension block 2 contacts the side of the motor end cover of the test piece motor 8, which serves to position the fixed seat 1.

[0029] In an optional embodiment: such as Figures 1 to 3 As shown, it also includes an extension ring 5, which is fixedly connected to the side of the fixing base 1, and the inner hole of the extension ring 5 is connected to the central circular hole 6.

[0030] It should be noted that by pushing the handheld part 71, the handheld part 71 pushes the detection stop 72 and the external spline 73 to move, so that the detection stop 72 can move within the central circular hole 6. When the detection stop 72 moves, the surface of the detection stop 72 remains in contact with the inner wall of the central circular hole 6, keeping the handle 7 in a horizontal state, preventing the external spline 73 from tilting and affecting the smooth insertion of the external spline 73 into the internal spline 9.

[0031] In an optional embodiment: such as Figures 4 to 6 As shown, the handle 7 includes a hand grip 71, a detection stop 72, and an external spline 73;

[0032] One side of the detection stop 72 is fixedly connected to the end of the handheld part 71, and one end of the external spline 73 is fixedly connected to the other side of the detection stop 72. The detection stop 72 is located inside the central circular hole 6.

[0033] The surface of the detection stop 72 is in contact with the inner wall of the central circular hole 6.

[0034] It should be noted that if the test stop 72 can be inserted into the central circular hole 6, it means that the relative position and coaxiality of the bolt holes, internal splines 9, and motor end cover stop 10 of the tested component motor 8 meet the design requirements. If the test stop 72 cannot be inserted or is difficult to insert into the central circular hole 6, it means that the coaxiality does not meet the requirements.

[0035] The usage process of this utility model is as follows: Align the positioning pin 4 on the fixed base 1 with the bolt hole on the test piece motor 8. Since the position of the positioning pin 4 is based on the corresponding position of the bolt hole on the motor end cover, multiple positioning pins 4 can be directly inserted into the bolt hole of the corresponding motor being tested. Therefore, the positional accuracy of the bolt hole is very high and needs to match the height of the positioning pin 4 on the tooling. After the positioning pin 4 on the fixed base 1 is inserted into the bolt hole on the motor end cover of the test piece motor 8, the end of the extension block 2 contacts the side of the motor end cover of the test piece motor 8.

[0036] The external spline 73 is inserted into the central hole 6 of the fixed base 1 by holding the handpiece 71. After the external spline 73 passes through the central hole 6, if the external spline 73 can be inserted and matched into the internal spline 9 of the test piece motor 8 relatively smoothly, and the detection stop 72 can enter the central hole 6, it means that the relative position and coaxiality of the bolt hole, internal spline 9, and motor end cover stop 10 of the test piece motor 8 meet the design requirements. If the detection stop 72 cannot be inserted or is difficult to insert into the central hole 6, it means that the coaxiality does not meet the requirements. This ensures that the motor and reducer can be assembled smoothly and with high precision, effectively ensuring the compatibility of the motor and reducer assembly, avoiding shaft noise and rework problems caused by positioning deviation, and reducing production cost losses.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-functional testing device for the off-line testing of electric vehicle motors, characterized in that, include: Fixed base (1); The positioning pins (4) are provided in multiple sets. The multiple sets of positioning pins (4) correspond to the bolt holes distributed on the motor end cover of the test piece motor. The multiple sets of positioning pins (4) are all located inside the fixed seat (1). The central circular hole (6) is located at the center of the fixed base (1); The handle (7) is installed in the central circular hole (6) and is used to insert into the internal spline of the motor under test to detect the relative position and coaxiality of the bolt holes, internal spline, and motor end cover stop of the motor end cover.

2. The multi-functional testing device for electric vehicle motors according to claim 1, characterized in that: The multiple sets of positioning pins (4) are arranged in a circular array with the center of the fixed seat (1) as the reference.

3. The multi-functional testing device for the off-line testing of electric vehicle motors according to claim 1, characterized in that: The side of the fixed base (1) is fixedly connected to multiple sets of extension blocks (2) corresponding to the positioning pin (4). The fixed base (1) and the extension blocks (2) are both provided with mounting holes (3). One end of the positioning pin (4) passes through the mounting hole (3) and extends to the outside of the extension block (2).

4. The multi-functional testing device for the off-line testing of electric vehicle motors according to claim 1, characterized in that: It also includes an extension ring (5), which is fixedly connected to the side of the fixed base (1), and the inner hole of the extension ring (5) is connected to the central circular hole (6).

5. The multi-functional testing device for the off-line testing of electric vehicle motors according to claim 1, characterized in that: The handle (7) includes a hand grip (71), a detection stop (72), and an external spline (73); One side of the detection stop (72) is fixedly connected to the end of the handheld part (71), and one end of the external spline (73) is fixedly connected to the other side of the detection stop (72). The detection stop (72) is located inside the central circular hole (6).

6. The multi-functional testing device for the off-line testing of electric vehicle motors according to claim 5, characterized in that: The surface of the detection stop (72) is in contact with the inner wall of the central circular hole (6).

Images