CN219302616U

CN219302616U - Electric automobile motor locked rotor test fixture

Info

Publication number: CN219302616U
Application number: CN202220448231.9U
Authority: CN
Inventors: 杨本超; 颜宇杰; 罗平亮; 于志飞
Original assignee: Chuangqu Shanghai New Energy Technology Co ltd
Current assignee: Chuangqu Shanghai New Energy Technology Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2023-07-04
Anticipated expiration: 2032-03-03

Abstract

The utility model discloses a motor locked rotor testing tool for an electric automobile, which comprises a fixed flange plate and a tail support plate, wherein a plurality of double-headed screws and locknuts which are connected are arranged at the lower end between the fixed flange plate and the tail support plate, one side of the fixed flange plate is provided with a mounting hole, the other side of the fixed flange plate is provided with a driving motor, and the driving end of the driving motor is correspondingly arranged with the mounting hole. The utility model has the beneficial effects that: the testing process is convenient and flexible, the operation is simple, the motors are not required to be repeatedly disassembled from different testing angles, the compatibility is strong, different motors can be adapted, the locked rotor is realized in a simple mode, complex disassembly and installation are not required, the safety is good, the structural positioning precision is high, and high-precision testing data can be obtained.

Description

Electric automobile motor locked rotor test fixture

Technical Field

The utility model relates to the technical field of driving motor testing tools, in particular to an electric automobile motor locked rotor testing tool.

Background

The motor still outputs a state of torque at zero rotation speed, namely, the motor is blocked. Motor stalling is generally caused by mechanical damage, excessive load, and the like. The current during the blocking can reach 5-12 times of the rated current, so that the motor can be burnt out after the blocking time is slightly long. In order to prevent damage caused by locked rotor, the motor should generally be provided with an overcurrent protection device to protect the motor from overheating. The current setting needs to be completed by means of testing, so that the locked rotor testing is particularly important for the motor research and development stage.

At present, a locked rotor test is carried out after a motor rotating shaft is fixed by a locked rotor rod, and the locked rotor test is easy to loose and influences a measurement result. The end face of the motor rotating shaft is provided with the fixing plate and is connected with the test bed through the fixing bolt, but the locked-rotor test method has low test efficiency and is complex to assemble and disassemble, and the test result of the method is inaccurate because of no positioning.

Disclosure of Invention

The utility model aims to provide a locked rotor testing tool for an electric automobile motor, which aims to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an electric automobile motor locked rotor test fixture, includes mounting flange and afterbody backup pad, the lower extreme is equipped with a plurality of double-end screw rods and the locknut that are connected between mounting flange and the afterbody backup pad, the mounting hole has been seted up to mounting flange one side, driving motor has been placed to the mounting flange opposite side, the driving motor drive end with the mounting hole corresponds the setting.

Preferably, a plurality of mounting holes are formed in the circumference direction around the mounting hole.

Preferably, a positioning disc connected with the fixed flange is arranged on the other side of the fixed flange, which is far away from the driving motor.

Preferably, a plurality of radial holes are symmetrically arranged around the positioning disc respectively.

Preferably, a boss switching shaft matched and corresponding to the driving end of the driving motor is arranged in the mounting hole, and one end of the boss switching shaft is provided with an external spline and is matched with an internal spline of the output shaft end of the driving motor.

Preferably, auxiliary positioning rods and locking positioning rods are respectively inserted into a plurality of radial holes symmetrically arranged around the positioning disc.

Preferably, arrow marks are arranged on the periphery of the positioning disc and the boss switching shaft.

Advantageous effects

The electric automobile motor locked rotor test tool provided by the utility model has the advantages of convenience and flexibility in test process, simplicity in operation, strong compatibility, suitability for different motors, simplicity in locked rotor realization mode, no need of complex disassembly and installation, good safety, high structural positioning precision and capability of obtaining high-precision test data, and is unnecessary to repeatedly disassemble the motor at different test angles.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure of the fixing flange and the tail support plate of the present utility model;

FIG. 3 is a schematic view of an alternative angle between the mounting flange and the tail support plate of the present utility model.

Reference numerals

The device comprises a 1-boss switching shaft, a 2-auxiliary positioning rod, a 3-locking positioning rod, a 4-fixed flange, a 5-double-head screw, a 6-locknut, a 7-tail support plate and an 8-driving motor.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Examples

As shown in fig. 1-3, an electric automobile motor locked rotor test fixture comprises a fixed flange 4 and a tail support plate 7, wherein a plurality of double-headed screws 5 and locknuts 6 connected with each other are arranged at the lower end between the fixed flange 4 and the tail support plate 7, one side of the fixed flange 4 is provided with a mounting hole, the other side of the fixed flange 4 is provided with a driving motor 8, and the driving end of the driving motor 8 is correspondingly arranged with the mounting hole.

Preferably, a plurality of mounting holes are formed around the mounting hole in the circumferential direction.

Preferably, the other side of the fixed flange 4 remote from the drive motor 8 is provided with a positioning disk connected thereto.

Preferably, the mounting hole is internally provided with a boss switching shaft 1 matched and corresponding to the driving end of the driving motor 8, and one end of the boss switching shaft 1 is provided with an external spline and is matched with an internal spline of the output shaft end of the driving motor 8.

Preferably, the auxiliary positioning rod 2 and the locking positioning rod 3 are respectively inserted into a plurality of radial holes symmetrically arranged around the positioning disc.

Preferably, the periphery of the positioning disk and the boss switching shaft 1 are provided with arrow marks.

Electric automobile motor locked rotor test fixture includes base subassembly and fixed subassembly, and base subassembly includes: fixed flange, double-end screw rod, locknut, afterbody backup pad, fixed subassembly includes: boss adapter shaft, auxiliary positioning rod, locking locating lever.

According to the hole position of the front end cover of the motor and the size of the spigot, the opposite spigot and the corresponding mounting hole position are added on the fixed flange plate, and redundant hole positions are reserved so as to be compatible with the mounting connection of different motor products on the same platform.

Radial hole sites connected with the boss switching shaft are added on the fixed flange plate, and arrow marks are respectively added, so that the initial fixed position and the relative fixed position can be better distinguished.

The relative positions of the fixed flange plate and the tail support plate are adjusted through the double-headed screw rod and the locknut, so that stable placement and reliable installation of the motor are ensured.

After the driving motor is mounted on the fixed flange, the driving motor is directly mounted on the boss switching shaft, and the front end of the boss switching shaft is provided with an external spline which is matched with an internal spline of the output shaft end of the motor. And then the auxiliary positioning rod and the locking positioning rod are respectively inserted into radial hole positions corresponding to the fixed flange and the boss switching shaft. This allows easy connection by fine-tuning the auxiliary positioning rod in the axial direction of the boss adapter shaft.

When the angle of the motor shaft is required to be adjusted, the auxiliary positioning rod and the locking positioning rod which are radially installed are detached, and the rotary boss is connected with the auxiliary positioning rod in the axial direction of the shaft to the next corresponding arrow mark.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the summary of the present utility model within the scope of the present utility model.

Claims

1. The utility model provides an electric automobile motor locked rotor test fixture, includes mounting flange (4) and afterbody backup pad (7), its characterized in that: the lower extreme is equipped with a plurality of double-end screw rods (5) and locknut (6) that are connected between mounting flange dish (4) and afterbody backup pad (7), the mounting hole has been seted up to mounting flange dish (4) one side, driving motor (8) have been placed to mounting flange dish (4) opposite side, driving motor (8) drive end with the mounting hole corresponds the setting.

2. The electric automobile motor stalling test fixture of claim 1, wherein: a plurality of mounting hole sites are arranged around the mounting hole in the circumferential direction.

3. The electric automobile motor stalling test fixture of claim 1, wherein: the other side of the fixed flange plate (4) far away from the driving motor (8) is provided with a positioning plate connected with the driving motor.

4. The electric automobile motor stalling test fixture of claim 3, wherein: and a plurality of radial holes are symmetrically arranged around the positioning disk respectively.

5. The electric automobile motor stalling test fixture of claim 3, wherein: the mounting hole is internally provided with a boss switching shaft (1) matched and corresponding to the driving end of the driving motor (8), and one end of the boss switching shaft (1) is provided with an external spline and is matched with an internal spline of the output shaft end of the driving motor (8).

6. The electric automobile motor stalling test fixture of claim 4, wherein: auxiliary positioning rods (2) and locking positioning rods (3) are respectively inserted into a plurality of radial holes symmetrically arranged around the positioning disc.

7. The electric automobile motor stalling test fixture of claim 5, wherein: the periphery of the positioning disk and the boss switching shaft (1) are provided with arrow marks.