Electrical motor having rotor support shield

Details Electrical motor having rotor support shield Electrical motor having rotor support shield

B - Operations, Transporting

25

B

B25B 27/00 (2006.01) H02K 5/173 (2006.01) H02K 15/00 (2006.01)

Patent

CA 2747952

A bearing change in an electrical motor and in particular a generator having permanent magnetic excitation should be able to be carried out safely. To this end, the invention relates to an electrical motor having a shaft (2) on which a rotor is mounted and a bearing unit (5) by means of which the shaft (2) is rotatably mounted. In addition, the electrical motor has a rotor support shield (1) to which the bearing unit (5) is fastened. Furthermore, the rotor support shield (1) is sized so as to be capable of supporting the shaft (2) when the bearing unit (5) is removed and seals a grease chamber (8) of the bearing unit (5) opposite the shaft (2). With the rotor support shield, a permanent magnet-equipped rotor can in particular be prevented from coming into contact with the stator when the bearing is removed.

Un changement de roulement d'une machine électrique et, en particulier, d'une génératrice à excitation magnétique permanente, doit être effectué de manière sûre. A cet effet, l'invention concerne une machine électrique comprenant un arbre (2) sur lequel un rotor est monté, et une unité de roulement (5) au moyen de laquelle l'arbre (2) est monté en rotation. En outre, la machine électrique possède un bouclier d'appui de rotor (1) sur lequel l'unité de roulement est fixée. En outre, le bouclier d'appui de rotor (1) est dimensionné de façon qu'il puisse supporter l'arbre (2) lorsque l'unité de roulement (5) se trouve à distance, et qu'une chambre à graisse (8) de l'unité de roulement (5) demeure étanche par rapport à l'arbre (2). Le bouclier d'appui de rotor permet d'empêcher en particulier qu'un rotor équipé d'un aimant permanent vienne en contact avec le stator lorsqu'un roulement est démonté.

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