Shell-free motor testing device

Abstract

The utility model discloses a shell-free motor testing device, and relates to the technical field of mechanical testing. A shell-free motor testing device comprises a workbench, a torsion sensor is arranged on the workbench, a load device is arranged at one end of the torsion sensor, a fixing frame used for fixing a stator is arranged at the end, away from the load device, of the workbench, and the torsion sensor is coaxially connected with a rotor. The rotor is inserted into the stator and is kept coaxial with the stator, bearing seats are arranged at the two ends of the fixing frame, the bearing seats are fixedly connected with connecting rods, the connecting rods, the stator and the rotor are coaxially arranged, a guiding device is arranged on the workbench, the guiding device is connected with a sliding device, and the sliding device is fixedly connected with the fixing frame. The sliding device is fixedly connected to the fixing frame and the bottom of the bearing seat far away from the load device. Through fixation of the stator and relative coaxial arrangement of the rotor, the test of the shell-free motor can be carried out only by the stator and the rotor, and the waste of workload is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of motor testing, and in particular to a housingless motor testing device. Background Art

[0002] Motor testing is a crucial step in comprehensively evaluating motor assembly quality and technical performance, and is a crucial component of motor manufacturing and production. Once the stator and rotor are designed, the motor's performance is already determined. To preemptively test motor performance, testing is often performed without designing the motor housing. However, most current motor testing equipment can only test motors with housings and cannot test motors without them.

[0003] With respect to the above-mentioned related technologies, the inventors believe that if a motor with a designed housing is tested and the test results are not ideal, the housing of the motor needs to be redesigned, which wastes work. Utility Model Content

[0004] The purpose of this application is to provide a housing-less motor testing device to improve the problem of wasted work caused by the need to redesign the motor housing when the test results are not ideal.

[0005] This application provides a device for testing a housingless motor, which adopts the following technical solutions:

[0006] A housingless motor testing device includes a workbench, a torque sensor is provided on the workbench, one end of the torque sensor is connected to a load device, the load device is fixed to the workbench, and the workbench is provided with a fixing frame for fixing the stator at an end away from the load device. The torque sensor is coaxially connected to the rotor, and the rotor is inserted into the stator and remains coaxial.

[0007] By adopting the above technical solution, the fixing frame fixes the stator of the test motor, the torque sensor is coaxially connected to the rotor, so that the rotor can rotate coaxially inside the stator, and the load device provides load to the stator and rotor of the shell-less test motor, so that the torque sensor outputs a torque waveform diagram, which can be used to judge the performance of the shell-less test motor, so that the shell of the test motor does not need to be designed in advance, saving workload.

[0008] Optionally, bearing seats are provided at both ends of the fixed frame, the bearing seats are connected to the workbench, the bearing seats are fixedly connected to a connecting rod, the connecting rod is coaxially arranged with the stator and the rotor, the connecting rod is fixedly connected to both ends of the rotor, and the connecting rod is fixedly connected to the torque sensor at a position close to the torque sensor.

[0009] By adopting the above technical solution, the rotor and the stator are kept in a relatively coaxial position by using a connecting rod, thereby reducing the impact on the test results.

[0010] Optionally, an adjustably fixed adjustment plate is provided on the fixing frame, and the fixing plate is fixedly connected to the stator.

[0011] By adopting the above technical solution, the stator is fixed on the adjustment plate, and the position of the stator is set by the adjustment plate to ensure that the stator and the rotor are relatively coaxial, thereby reducing the impact on the test results.

[0012] Optionally, both ends of the torque sensor are fixedly connected with connecting pieces, wherein the connecting piece is fixedly connected to the load device at one end of the torque sensor, and is fixedly connected to a connecting rod connected to the rotor at the other end of the torque sensor.

[0013] By adopting the above technical solution, the load device and the torque sensor are connected by a connector, and the rotor is connected to the torque sensor through a connecting rod, so as to protect the torque sensor and prevent the starting force of the test motor from being too large to cause damage to the torque sensor.

[0014] Optionally, a protective device is provided on the side of the connecting member, and the protective device is fixedly connected to the workbench.

[0015] By adopting the above technical solution, the connection part of the torque sensor is protected by the protection device, thereby improving the accuracy of the torque sensor test data.

[0016] Optionally, the fixing frame is fixedly connected to a rib plate at one end away from the adjustment plate.

[0017] By adopting the above technical solution, the fixing frame is reinforced with ribs to prevent the fixing frame from shaking and affecting the test results.

[0018] Optionally, the workbench is provided with a guide device in the same axial direction as the stator, and the lower surface of the fixing frame and the lower surface of a bearing seat away from the load device are both provided with sliding devices, and the sliding device and the guide device are slidably connected.

[0019] By adopting the above technical solution, the guide device and the sliding device are used to move the fixing frame and the bearing seat away from the load device toward the end away from the torque sensor, thereby improving the efficiency of installing the stator and rotor of the test motor and improving the test efficiency.

[0020] Optionally, a clamping device is provided on the lower surface of the fixing frame and the lower surface of a bearing seat away from the load device.

[0021] By adopting the above technical solution, the guide device is clamped with a clamping device, thereby limiting the position of the fixing frame and the bearing seat away from the torque sensor, preventing the rotor from being disconnected from the connecting rods on both sides due to the change of position of the fixing frame during the test, thereby preventing the test from failing.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. Fix the stator of the test motor by a fixing frame, and fix the rotor connected to the connecting rods coaxially arranged with the stator on both sides of the fixing frame. Apply load to the stator and rotor of the test motor through the load device, so that the torque sensor outputs a torque waveform. This allows the performance of the test motor to be tested even when only the stator and rotor are present without an outer shell.

[0024] 2. The stator is fixed by the adjustment plate provided on the fixing frame so that the stator and the rotor are relatively coaxial. The load device and the torque sensor are fixedly connected by the connecting piece, and the torque sensor and the connecting rod connected to the rotor are fixedly connected by the connecting piece so that the rotor can drive the torque sensor to rotate axially, thereby reducing damage to the torque sensor caused by excessive starting force of the rotor of the test motor. The protective device provided on the side of the connecting piece reduces the influence of external factors on the connection parts on both sides of the torque sensor, thereby improving the accuracy of the torque sensor test data;

[0025] 3. A matching guide device and a sliding device are provided on the workbench to change the position of the fixing frame and the bearing seat away from the torque sensor, thereby improving the efficiency of installing the stator and rotor of the test motor and improving the test efficiency. Through the clamping devices provided on both sides of the guide device, after the stator and the rotor are installed, the fixing frame above the guide device and the bearing seat away from the torque sensor are fixed in appropriate positions to prevent the rotor from being disconnected from the connecting rods on both sides due to the change of position of the fixing frame at the beginning of the test, thereby making the test ineffective. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of a housingless motor testing device according to an embodiment of the present application.

[0027] Figure 2 It is a partial cross-sectional view of the embodiment.

[0028] Figure 3 yes Figure 2 A partial enlarged view of .

[0029] In the figure, 1. workbench; 2. torque sensor; 3. load device; 4. fixing frame; 5. stator; 6. rotor; 7. bearing seat; 8. connecting rod; 9. adjustment plate; 10. connecting part; 11. protective device; 12. rib plate; 13. guide device; 14. sliding device; 15. clamping device. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1 -Attached Figure 3 , further details of this application are given.

[0031] A housingless motor test device, referring to Figure 1 The workbench 1 includes a torque sensor 2 and a load device 3. The load device 3 and the torque sensor 2 are fixed to the workbench 1 by screws, wherein the load device 3 is a load motor. The workbench 1 is provided with a fixing frame 4, to which a stator 5 is fixedly connected. The torque sensor 2 is coaxially connected to a rotor 6. The fixing frame 4 is provided with bearing seats 7 at both ends. The bearing seats 7 are rotatably connected to connecting rods 8 via internal bearings. The connecting rods 8 and the rotor 6 are fixedly connected on the same axis. The stator 5 and the rotor 6 are relatively coaxially arranged. The bearing seat 7 near the torque sensor 2 is fixedly connected to the workbench 1.

[0032] Reference Figure 2 and Figure 3 The workbench 1 is provided with a guide device 13 in the same axial direction as the stator 5. The guide device 13 is a guide rail. A fixedly connected sliding device 14 is provided on the lower surface of the fixed frame 4 and the lower surface of a bearing seat 7 away from the load device 3. The sliding device 14 is a slider. The sliding device 14 and the guide device 13 are slidingly connected. The fixed frame 4 and the bottom of the bearing seat 7 away from the torque sensor 2 are fixedly connected to the sliding device 14. The fixed frame 4 and the lower surface of the bearing seat 7 away from the load device 3 are provided with a plurality of clamping devices 15. The clamping device 15 includes a handle and a bolt. The handle is fixedly connected to the bolt. Turning the handle causes the bolt to squeeze the guide device 13 to achieve clamping of the guide device 13.

[0033] refer to Figure 2 , the torque sensor 2 is provided with a fixedly connected connector 10 at both ends, and the connector 10 is a coupling. The connector 10 fixes the driving rod of the load device 3 and the torque sensor 2, as well as the connecting rod 8 on the same axis. The torque sensor 2 is provided with a protective device 11 at both ends to wrap the connector 10. The protective device 11 is fixedly connected to the workbench 1. The protective device 11 includes a protective cover and a base supporting the protective cover. The protective cover wraps the connector 10, and the protective cover is controlled to open and close with bolts. An adjusting plate 9 is provided on the fixing frame 4, and the adjusting plate 9 is adjusted and fixed to the fixing frame 4. The stator 5 is fixedly connected to the adjusting plate 9, and a rib plate 12 is welded and fixed to the fixing frame 4.

[0034] The implementation principle of the embodiment of this application is:

[0035] One end of the torque sensor 2 on the workbench 1 is connected to the driving rod of the load device 3 through the connecting piece 10, and the other end is fixed on the same axis with the connecting rod 8 of the bearing seat 7 through the connecting piece 10. When testing the performance of the housingless motor, the stator 5 of the test motor is first fixed to the fixed frame 4 through the adjusting plate 9, and then the rotor 6 of the test motor is fixed to the connecting rod 8 of the bearing seats 7 on both sides on the same axis, so that the load device 3, the connecting piece 10, the torque sensor 2, the bearing seat 7, the connecting rod 8, the stator 5, and the rotor 6 are located in a relatively coaxial position. Then, the fixed frame 4 and the bearing seat 7 away from the torque sensor 2 are moved to the appropriate position through the guide device 13 and the sliding device 14, and the guide device 13 is clamped with the clamping device 15 to limit the position of the fixed frame 4 and the bearing seat 7 away from the torque sensor 2. After the stator 5 is energized, the rotor 6 starts to rotate, and the load device 3 rotates in the opposite direction to simulate the load of the test motor, so that the torque sensor 2 generates a torque waveform diagram. The performance of the test motor is judged by the torque waveform diagram, which saves workload for subsequent design.

[0036] The examples of this specific embodiment are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, any equivalent changes made based on the structure, shape, and principle of this application should be included in the scope of protection of this application.

Claims

1. A housingless motor testing device, characterized in that: The invention comprises a workbench (1), wherein a torque sensor (2) is provided on the workbench (1), a load device (3) is provided at one end of the torque sensor (2), the load device (3) is fixedly connected to the workbench (1), and a fixing frame (4) for fixing a stator (5) is provided at an end of the workbench (1) away from the load device (3). The torque sensor (2) is coaxially connected to a rotor (6), and the rotor (6) is inserted into the stator (5) and maintained coaxially.

2. The housingless motor testing device according to claim 1, characterized in that: Bearing seats (7) are provided at both ends of the fixing frame (4), the bearing seats (7) are connected to the workbench (1), the bearing seats (7) are fixedly connected to a connecting rod (8), the connecting rod (8) is coaxially arranged with the stator (5) and the rotor (6), the connecting rod (8) is fixedly connected to both ends of the rotor (6), and the connecting rod (8) is fixedly connected to the torque sensor (2) at a position close to the torque sensor (2).

3. The housingless motor testing device according to claim 1, characterized in that: An adjustable and fixed adjustment plate (9) is provided on the fixing frame (4), and the adjustment plate (9) is fixedly connected to the stator (5).

4. The housingless motor testing device according to claim 1, characterized in that: Connecting pieces (10) are fixedly connected to both ends of the torque sensor (2), and the connecting pieces (10) are fixedly connected to the load device (3) and the connecting rod (8).

5. The housingless motor testing device according to claim 4, characterized in that: The connecting member (10) is coaxially provided with a protective device (11), and the protective device (11) is fixedly connected to the workbench (1).

6. The housingless motor testing device according to claim 1, characterized in that: The fixing frame (4) is fixedly connected to a rib plate (12) at one end away from the adjustment plate (9).

7. The housingless motor testing device according to claim 1, characterized in that: The workbench (1) is provided with a guide device (13) in the same axial direction as the stator (5), and a sliding device (14) is provided on the lower surface of the fixing frame (4) and the lower surface of a bearing seat (7) away from the load device (3). The sliding device (14) is slidably connected to the guide device (13).

8. The housingless motor testing device according to claim 7, characterized in that: The fixing frame (4) and a bearing seat (7) away from the load device (3) are both provided with a clamping device (15).

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