Motor testing tool

Abstract

An embodiment of the utility model discloses a motor test tool, which comprises a test accompanying motor, a supporting seat and a static torque sensor, the top of the test accompanying motor is mounted at the bottom of the supporting seat, the joint of the output end of the test accompanying motor and a connecting shaft is positioned in the supporting seat, and the other end of the connecting shaft is connected with an output shaft of a motor to be tested. A bearing outer ring supporting seat is installed at the upper end of a supporting seat, a connecting shaft penetrates through the supporting seat and the bearing outer ring supporting seat, a bearing inner ring rotating seat is installed in the middle of the top of the bearing outer ring supporting seat, the top of a static torque sensor is connected with the bearing inner ring rotating seat, and the bottom of the static torque sensor is connected with an inner threaded pin. According to the floating connection device, the size is small, the requirement for installation is low, floating connection is adopted, and high concentricity does not need to be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor manufacturing technical field, concretely relates to a motor test frock. BACKGROUND

[0002] After the production of the motor, it needs to be tested. The main reasons for testing the motor are as follows:

[0003] Ensure performance meets standards: Motors have specific performance requirements in different application scenarios, such as power, speed, torque, etc. in industrial production. Through testing, these parameters can be accurately measured to determine whether the motor meets the design standards and ensure stable and efficient operation in actual use. For example, in the production of drive motors for electric vehicles, it is necessary to ensure that the power and torque output of the motor meet the power requirements of the vehicle, otherwise it will affect the acceleration performance and maximum speed of the vehicle.

[0004] Currently, the purchased motor sometimes needs to be tested separately, and only the motor torque fluctuation performance index is tested. The patent application number for testing the motor torque fluctuation performance is 2023108074661. The sensor of this technical solution is a dynamic torque sensor. The dynamic sensor needs to be connected to the input shaft and output shaft at both ends. When the concentricity is not good, it will cause the data fluctuation of the torque sensor. This technical solution has high requirements for concentricity, and the testing accuracy is easily affected by the environment. UTILITY MODEL CONTENTS

[0005] The utility model provides a motor test frock, volume is small, to the installation requirement is lower, adopts floating connection, need not guarantee higher concentricity.

[0006] The product has innovative changes.

[0007] To achieve the above purpose, the utility model provides the following technical scheme:

[0008] The motor test frock includes a test motor, a support seat, and a static torque sensor. The top of the test motor is installed at the bottom of the support seat. The output end of the test motor is connected to the connecting shaft, and the other end of the connecting shaft is connected to the output shaft of the motor to be tested. The upper end of the support seat is installed with a bearing outer ring support seat. The connecting shaft passes through the support seat and the bearing outer ring support seat. The top of the bearing inner ring rotating seat is installed in the middle of the bearing outer ring support seat. The top of the static torque sensor is connected to the bearing inner ring rotating seat. The bottom of the static torque sensor is connected to the internal thread pin. The bottom of the internal thread pin is connected to the support seat.

[0009] Preferably, the motor to be tested is connected to the bearing inner ring rotating seat through the motor mounting seat.

[0010] Preferably, the bottom of the motor to be measured is provided with a plurality of clamping grooves one, the motor mounting seat is provided with clamping blocks one corresponding to the clamping grooves one, the clamping blocks one are located in the clamping grooves one, the other side of the motor mounting seat is provided with a clamping groove two, the bearing inner ring rotating seat is provided with clamping blocks two, and the clamping blocks two are located in the clamping groove two.

[0011] Preferably, the bearing inner ring rotating seat and the bearing outer ring supporting seat are connected through the deep groove ball bearing one, and the connecting shaft and the bearing inner ring rotating seat are connected through the deep groove ball bearing two.

[0012] Preferably, the top of the connecting shaft is provided with a motor to be measured connecting groove in the middle, the output shaft of the motor to be measured is located in the motor to be measured connecting groove, the bottom of the connecting shaft is provided with a mounting clamping groove in the middle, the mounting clamping groove is clamped on the cylindrical pin, the cylindrical pin is installed on the shaft connecting block, and the shaft connecting block is installed on the output end of the auxiliary motor.

[0013] Preferably, the connecting part of the output shaft of the motor to be measured and the connecting shaft is located in the motor mounting seat, the upper end and the lower end of the deep groove ball bearing two are respectively provided with an axle clamping spring and a hole clamping spring, the axle clamping spring is installed on the connecting shaft, the hole clamping spring is installed at the bearing inner ring rotating seat, and the hole clamping spring is sleeved on the connecting shaft.

[0014] Preferably, the connecting head of the bottom of the internal thread pin is provided with a threaded pin mounting groove, the threaded pin mounting groove is provided with an internal thread, the internal thread pin is in threaded connection with the head of the screw, the screw is installed on the supporting seat, and the bottom of the static torque sensor is provided with a plug-in groove corresponding to the internal thread pin.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a static torque sensor, and the lower end of the sensor is floating, the motor to be measured, the static torque sensor and the motor mounting seat are all floatingly connected, the motor to be measured and the sensor are all plug-in connected, can be automatic centering, avoid the influence of radial force to torque sensor, small size, high precision, and the advantages of not being affected by the installation environment. DRAWINGS

[0017] Figure 1 It is the embodiment schematic drawing of the utility model.

[0018] Figure 2 It is the embodiment sectional view of the utility model.

[0019] Figure 3 It is the embodiment explosion schematic drawing of the utility model.

[0020] Figure 4 It is the embodiment internal thread pin schematic drawing of the utility model.

[0021] Figure 5 It is the embodiment motor to be measured schematic drawing of the utility model.

[0022] Figure 6 This is a schematic diagram of the motor mounting base according to an embodiment of this utility model.

[0023] Figure 7 This is a schematic diagram of the bearing inner ring rotating seat according to an embodiment of this utility model.

[0024] Figure 8 This is a top view of the bearing inner ring rotating seat according to an embodiment of this utility model.

[0025] Figure 9 This is a bottom view of the bearing inner ring rotating seat according to an embodiment of this utility model.

[0026] Figure 10 This is a schematic diagram of the connecting shaft in an embodiment of this utility model.

[0027] Figure 11 This is a top view of the connecting shaft in an embodiment of this utility model.

[0028] Figure 12 This is a schematic diagram of the connection between the connecting shaft and the cylindrical pin in an embodiment of this utility model. Detailed Implementation

[0029] 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.

[0030] As shown in the figure, this utility model discloses a motor testing fixture, including a test motor 1, a support base 2, and a static torque sensor 3. The top of the test motor 1 is mounted on the bottom of the support base 2. The connection between the output end 101 of the test motor 1 and the connecting shaft 4 is located inside the support base 2. The other end of the connecting shaft 4 is connected to the output shaft 51 of the motor under test 5. A bearing outer ring support 6 is mounted on the upper end of the support base 2. The connecting shaft 4 passes through the support base 2 and the bearing outer ring support 6. A bearing inner ring rotating seat 7 is mounted at the top center of the bearing outer ring support 6. The top of the static torque sensor 3 is connected to the bearing inner ring rotating seat 7, and the bottom of the static torque sensor 3 is connected to an internal threaded pin 8. The bottom of the internal threaded pin 8 is connected to the support base 2. Here, the test motor 1 is the load.

[0031] The utility model discloses a static torque sensor 3 tests the torque constant and torque fluctuation of the motor 5, and the static torque sensor 3 adopts floating connection (namely the upper end of static torque sensor 3 is fixed with bearing inner ring rotating seat 7 through internal hexagon screw, and the lower end is floatingly connected with support seat 2 through internal thread pin 8), and because of adopting floating connection, the motor 5, connecting shaft 4 and the motor 1 will not be pressed tightly, and the static torque sensor 3 will not receive axial tension and pressure, and the connecting mode transmits axial force to support seat 2, avoids the static torque sensor 3 axial compression, and improves the accuracy of torque value measurement.

[0032] If pressed tightly, the static torque sensor 3 will receive non-axial force, and the accuracy of torque value measurement will be affected.

[0033] In the embodiment of the utility model, the motor 5 is connected with the bearing inner ring rotating seat 7 through the motor mounting seat 9. The connecting structure of the motor mounting seat 9 and the motor 5 is determined according to the model of the motor 5.

[0034] In the embodiment of the utility model, the bottom of the motor 5 is provided with a plurality of clamping grooves 52, the motor mounting seat 9 is provided with clamping block 91 matched with the clamping groove 52, the clamping block 91 is connected with the clamping groove 52 in plug-in mode, the clamping block 91 is located at the clamping groove 52, the other side of the motor mounting seat is provided with clamping groove 92 in the middle, the bearing inner ring rotating seat 7 is provided with clamping block 71, and the clamping block 71 is located at the clamping groove 92. The clamping groove 92 is connected with the clamping block 71 in plug-in mode, and the motor mounting seat is convenient to install.

[0035] In the embodiment of the utility model, the bearing inner ring rotating seat 7 and the bearing outer ring support seat 6 are connected through the deep groove ball bearing 10, and the connecting shaft 4 and the bearing inner ring rotating seat 7 are connected through the deep groove ball bearing 11.

[0036] The utility model is vertically assembled, the connecting shaft 4 and the bearing inner ring rotating seat 7 are matched through the deep groove ball bearing 11, and the bearing inner ring rotating seat is matched with the bearing outer ring support seat through the deep groove ball bearing 10, the motor can be automatically adjusted to the center after installation, thereby avoiding the measurement of the torque value from appearing the card stagnation phenomenon.

[0037] In the embodiment of the utility model, the top middle part of the connecting shaft 4 is provided with the motor connecting groove 41, the output shaft 51 of the motor 5 is located in the motor connecting groove 41, the bottom middle part of the connecting shaft 4 is provided with the installation clamping groove 42, the installation clamping groove 42 is clamped on the cylindrical pin 12, the cylindrical pin 12 is installed on the shaft connecting block 13, and the shaft connecting block 13 is installed on the output end 101 of the motor 1.

[0038] In the embodiment of the utility model, the connecting place of the output shaft 51 of the motor to be measured 5 and the connecting shaft 4 is located in the motor mounting seat 9, the upper end and the lower end of the deep groove ball bearing two 11 are respectively equipped with the shaft clamp spring 14 and the hole clamp spring 15, the shaft clamp spring 14 is installed on the connecting shaft 4, the hole clamp spring 15 is installed at the bearing inner ring rotating seat 7, and the hole clamp spring 15 is sleeved on the connecting shaft 4. The utility model can adapt to multiple motors, is convenient to install, the motor to be measured 5, the motor mounting seat 9 and the bearing inner ring rotating seat 7 all adopt plug-in connection, when using, only need to insert the motor mounting seat 9 into the motor shell, then insert the whole into the bearing inner ring rotating seat 7, for different models of motor, only need to make a motor mounting seat matched with it.

[0039] The connecting shaft 4 can be directly pulled out in the axial direction, and when replacing the static torque sensor 3, only the shaft clamp spring 14, the hole clamp spring 15 and the fastener need to be removed.

[0040] In the embodiment of the utility model, the connecting head of the bottom of the internal thread pin 8 is equipped with a threaded pin installation groove 81, the threaded pin installation groove 81 is equipped with an internal thread, the internal thread pin 8 is in threaded connection with the head of the screw 16, the screw 16 is installed on the support seat 2, and the bottom of the static torque sensor 3 is equipped with a plug-in groove 31 corresponding to the internal thread pin 8. The internal thread pin 8 is in clearance fit with the plug-in groove 31.

[0041] The utility model works as follows: when the motor to be measured 5 drives the motor to be measured 1 to rotate through the shaft connecting block 13, the cylindrical pin 12 and the connecting shaft 4, the torque generated by the motor to be measured 5 is transmitted to the static torque sensor 3 through the shell of the motor to be measured, the motor mounting seat 9 and the bearing inner ring rotating seat 7, when the motor tooth slot torque and friction torque are tested, the motor to be measured 5 does not move, and the motor to be measured 1 rotates, at this time, the value measured by the static torque sensor 3 is the tooth slot torque and friction torque of the motor to be measured 1; when the motor torque constant and torque fluctuation are measured, the motor to be measured 5 is applied with an electric current value opposite to the rotating direction, at this time, the output torque value of the motor to be measured 5 corresponding to the electric current is measured by the static torque sensor 3.

[0042] The above content is only an example and description of the structure of the utility model, and the skilled in the art can make various modifications or supplements or adopt similar ways to replace the described specific embodiments, as long as the structure of the utility model is not deviated or the range defined by the patent claim is not exceeded, which shall belong to the protection range of the utility model.

Claims

1. An electrical machine test fixture, characterized by: The application relates to a static torque sensor for a motor, which comprises a test motor, a support base and a static torque sensor, wherein the top of the test motor is installed at the bottom of the support base, the output end of the test motor is connected with the connecting shaft, the other end of the connecting shaft is connected with the output shaft of the motor to be tested, the upper end of the support base is installed with a bearing outer ring support base, the connecting shaft passes through the support base and the bearing outer ring support base, the top of the bearing outer ring support base is installed with a bearing inner ring rotating base, the top of the static torque sensor is connected with the bearing inner ring rotating base, the bottom of the static torque sensor is connected with an internal thread pin, and the bottom of the internal thread pin is connected with the support base.

2. The motor test fixture of claim 1, wherein: The motor to be tested is connected with the bearing inner ring rotating base through a motor mounting base.

3. The motor testing fixture of claim 2, wherein: The bottom of the motor to be tested is provided with a plurality of clamping grooves I, the motor mounting base is provided with clamping blocks I which are located in the clamping grooves I, the other side of the motor mounting base is provided with a clamping groove II, the bearing inner ring rotating base is provided with clamping blocks II which are located in the clamping groove II.

4. The motor test fixture of claim 2, wherein: The bearing inner ring rotating base and the bearing outer ring support base are connected through deep groove ball bearings I, and the connecting shaft and the bearing inner ring rotating base are connected through deep groove ball bearings II.

5. The motor testing tooling of claim 4, wherein: The top of the connecting shaft is provided with a motor to be tested connecting groove, the output shaft of the motor to be tested is located in the motor to be tested connecting groove, the bottom of the connecting shaft is provided with an installation clamping groove, the installation clamping groove is clamped on a cylindrical pin, the cylindrical pin is installed on a shaft connecting block, and the shaft connecting block is installed on the output end of the test motor.

6. The motor test fixture of claim 5, wherein: The output shaft of the motor to be tested is connected with the connecting shaft and located in the motor mounting base, the upper end and the lower end of the deep groove ball bearings II are respectively provided with shaft clamping springs and hole clamping springs, the shaft clamping springs are installed on the connecting shaft, the hole clamping springs are installed at the bearing inner ring rotating base, and the hole clamping springs are sleeved on the connecting shaft.

7. The motor testing tooling of claim 1, wherein: The bottom of the internal thread pin is provided with a threaded pin mounting groove, the threaded pin mounting groove is provided with an internal thread, the internal thread pin is threadedly connected with the head of a screw, the screw is installed on the support base, and the bottom of the static torque sensor is provided with a plug-in groove corresponding to the internal thread pin.

8. The motor testing tooling of claim 7, wherein: The internal thread pin and the plug-in groove are gap matched.

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