| 摘要 |
1341434 Centring rotors in stators DANFOSS AS 4 Jan 1971 [13 Jan 1970] 244/71 Heading G1M Electric motor stator laminations in a stack 4, Fig. 1, are arranged to enclose a rotor 1 supported by its shaft 2. In some small motors e. g. in refrigerators, the rotor has to be centralized with respect to the laminations 4, and apparatus to enable this to be done comprises jaws 8, 9 carried by arms 10, 12 pivoted together at 13 for angular movement together and independently about a fixed fulcrum 11, a double acting actuator 15 operating the jaws, a second double acting actuator 16 which may be used to pivot the stator as a whole about 11, and an arm 14, extending from the arm 12 and movable between slidable but lockable blocks 18, 19 connected by links 24, 25 to a datum block 26. In operation the actuator 16 is operated to move the stator to contact the rotor at the point a; the arm 14 moving the block 19 downwardly to a limiting position where it is locked by 23. The stator is then moved to abut the rotor at point b, the arm 14 moving the block 18 to a position where it is locked by 22. The actuator 16, Fig. 2, is then operated to abut the end 17 of the arm 14 with a surface 27 of the block 26 which has been moved inwardly to a mid block position by the links 24, 25, and in this position the rotor is centralized in the stator in a vertical direction. The rotor is then centralized in a horizontal direction through the points c and d by repositioning the stator so that its other pair of opposite sides is gripped by the jaws 8, 9. The actuators 15 and 16 are powerful enough to reposition displaced laminations of the stator, and the rotor may be centralized in more than two directions. |
