Abstract: A dynamometer device (1) is equipped at a tip end part of a dynamometer (3) with a cover (5) that covers the periphery of a torque meter (14). The cover (5) is formed on its side surface with an opening section (41) that is equipped with a door (42), and a rotation shaft is locked by inserting a locking plate (52) through this opening section (41). The locking plate (52) is slidably guided by a guide rail section. A part of an outer peripheral surface of the rotation shaft is provided with a surface to be locked that is along the tangential direction, and the rotation shaft is locked by engaging the locking surface (64) of the locking plate (52).

Abstract: A heat insulation plate (25) is interposed between a coupling (21) and an adapter flange (22) in a main shaft (6) of a dynamometer (3). A torque meter (24) is disposed between a coupling flange (23) that serves as a test-piece connection surface (56) and the adapter flange (22). To surround a periphery of these, a cover (7) is provided. An air conditioner utilizing a refrigeration cycle supplies a cold wind to an inside space of the cover (7). The heat insulation plate (25) suppresses heat transmission from an electric motor of the dynamometer (3) to the torque meter (24). Therefore, the torque meter (24) is effectively cooled by the cold wind.

Abstract: A dynamometer device (1) is equipped at a tip end part of a dynamometer (3) with a cover (5) that covers the periphery of a torque meter (14). The cover (5) is formed on its side surface with an opening section (41) that is equipped with a door (42), and a rotation shaft is locked by inserting a locking plate (52) through this opening section (41). The locking plate (52) is slidably guided by a guide rail section. A part of an outer peripheral surface of the rotation shaft is provided with a surface to be locked that is along the tangential direction, and the rotation shaft is locked by engaging the locking surface (64) of the locking plate (52).

Abstract: A heat insulation plate (25) is interposed between a coupling (21) and an adapter flange (22) in a main shaft (6) of a dynamometer (3). A torque meter (24) is disposed between a coupling flange (23) that serves as a test-piece connection surface (56) and the adapter flange (22). To surround a periphery of these, a cover (7) is provided. An air conditioner utilizing a refrigeration cycle supplies a cold wind to an inside space of the cover (7). The heat insulation plate (25) suppresses heat transmission from an electric motor of the dynamometer (3) to the torque meter (24). Therefore, the torque meter (24) is effectively cooled by the cold wind.