Permanent magnet synchronous motor test box with high NVH performance

Abstract

The utility model discloses a high NVH performance permanent magnet synchronous motor test box, a permanent magnet synchronous motor is provided with a rotary transformer, the permanent magnet synchronous motor test box comprises a front end cover and a rear end cover, the front end cover and the rear end cover are detachably connected to the front and the rear of the permanent magnet synchronous motor respectively, and the rear end cover is provided with a transparent peep window. And a rotary transformer winding outgoing line is led out from the rear end cover, so that the operation condition of the stator and the rotor of the permanent magnet synchronous motor can be clearly observed by naked eyes.

Description

Technical Field

[0001] The utility model relates to the technical field of motor testing equipment, in particular to a high NVH performance permanent magnet synchronous motor test box. Background Art

[0002] At present, the testing of finished motors on the market often requires the use of a lot of complex equipment, which is too expensive. In fact, many problems do not require large and complex equipment to be tested, which is a bit of a waste of equipment. In fact, many times simple visual observation is sufficient. Utility Model Content

[0003] The utility model aims to provide a permanent magnet synchronous motor test box with high NVH performance, which can clearly observe the operation of the stator and rotor of the permanent magnet synchronous motor with the naked eye.

[0004] According to a high NVH performance permanent magnet synchronous motor test box provided by the utility model, a rotating transformer is installed on the permanent magnet synchronous motor, including a front cover and a rear cover which are detachably connected to the front and rear of the permanent magnet synchronous motor respectively, and a transparent peep window is installed on the rear cover, and the rotating transformer winding lead wire is led out of the rear cover.

[0005] Furthermore, bearings adapted to the motor shaft of the permanent magnet synchronous motor are installed on the opposite sides of the front cover and the rear cover.

[0006] Furthermore, a bearing sleeve is installed on the bearing.

[0007] Furthermore, the bearing cylinder sleeve is made of No. 45 steel.

[0008] Furthermore, the front end cover and the housing of the permanent magnet synchronous motor are threadedly connected, and the rear end cover and the housing of the permanent magnet synchronous motor are all provided with screw holes for threaded connection.

[0009] Furthermore, the front end cover is provided with a spare NTC sensor external interface.

[0010] Furthermore, an oil seal is sleeved on the motor shaft of the permanent magnet synchronous motor.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The operation of the stator and rotor of the permanent magnet synchronous motor can be clearly observed with the naked eye;

[0013] 2. The front cover and rear cover can be replaced in time;

[0014] 3. The bearing cylinder sleeve is made of 45# steel, which can improve the overall strength of the test box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a high NVH performance permanent magnet synchronous motor test box according to an embodiment of the utility model;

[0016] Figure 2 This is a structural cross-sectional view of the high NVH performance permanent magnet synchronous motor test box described in an embodiment of the utility model.

[0017] In the figure, 1-rotating transformer; 2-front cover; 3-rear cover; 4-transparent peep window; 5-bearing; 6-bearing cylinder sleeve; 7-oil seal. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0019] Combination Figure 1 , showing a high NVH performance permanent magnet synchronous motor test box of the utility model, a rotary transformer 1 is installed on the permanent magnet synchronous motor, including a front cover 2 and a rear cover 3 which are detachably connected to the front and rear of the permanent magnet synchronous motor respectively, a transparent peep window 4 is installed on the rear cover 3, and the lead wires of the rotary transformer 1 winding are led out from the rear cover 3.

[0020] Bearings 5 ​​adapted to the motor shaft of the permanent magnet synchronous motor are installed on the opposite sides of the front cover 2 and the rear cover 3 .

[0021] A bearing sleeve 6 is mounted on the bearing 5 .

[0022] The bearing cylinder sleeve 6 is made of 45# steel.

[0023] The front end cover 2 and the housing of the permanent magnet synchronous motor are threadedly connected, and the rear end cover 3 and the housing of the permanent magnet synchronous motor are threadedly connected. Screw holes for threaded connection are provided on the front end cover 2, the rear end cover 3 and the housing of the permanent magnet synchronous motor.

[0024] The front end cover 2 is provided with an external interface of a spare NTC sensor.

[0025] An oil seal 7 is sleeved on the motor shaft of the permanent magnet synchronous motor.

[0026] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A high NVH performance permanent magnet synchronous motor test box, wherein a rotary transformer is installed on the permanent magnet synchronous motor, characterized in that: It comprises a front cover and a rear cover which are respectively detachably connected to the front and rear of the permanent magnet synchronous motor, a transparent peep window is installed on the rear cover, and the lead wires of the rotary transformer winding are led out of the rear cover.

2. The high NVH performance permanent magnet synchronous motor test box according to claim 1, characterized in that: Bearings adapted to the motor shaft of the permanent magnet synchronous motor are installed on the facing sides of the front end cover and the rear end cover.

3. The high NVH performance permanent magnet synchronous motor test box according to claim 2 is characterized in that: A bearing cylinder sleeve is installed on the bearing.

4. The high NVH performance permanent magnet synchronous motor test box according to claim 3 is characterized in that: The bearing cylinder sleeve is made of 45# steel.

5. The high NVH performance permanent magnet synchronous motor test box according to claim 1, characterized in that: The front end cover and the housing of the permanent magnet synchronous motor are threadedly connected, and the rear end cover and the housing of the permanent magnet synchronous motor are threadedly connected. The front end cover, the rear end cover and the housing of the permanent magnet synchronous motor are all provided with screw holes for threaded connection.

6. The high NVH performance permanent magnet synchronous motor test box according to claim 1, characterized in that: The front end cover is provided with a spare NTC sensor external interface.

7. The high NVH performance permanent magnet synchronous motor test box according to claim 1, characterized in that: An oil seal is sleeved on the motor shaft of the permanent magnet synchronous motor.

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