The present disclosure is directed to a system for monitoring wear on a gearbox of a wind turbine. A controller of the system is configured to determine a torque exerted on a rotor shaft of the wind turbine or a generator shaft of the wind turbine based on measurement signals received from a first sensor of the system. The controller is also configured to determine an accumulated wear value for the gearbox based on the torque.

Provided is a test apparatus for an actuator, which can easily switch whether to establish or undo the coupling between an actuator to be tested and a load part configured to apply load to the actuator. A test apparatus for an actuator includes a load part for outputting load to be applied to an actuator to be tested, first levers for swinging around a rotational shaft in connection with an output from the load part, an idler link coupled to the output from the actuator to be tested, a second lever coupled to the idler link in a swingable manner and for swinging around a rotational shaft that is arranged coaxially with the rotational shaft of the first levers, and a clutch mechanism for coupling together the first levers and the second lever and undoing the coupling.

Provided is a test apparatus for an actuator, which can easily switch whether to establish or undo the coupling between an actuator to be tested and a load part configured to apply load to the actuator. A test apparatus for an actuator includes a load part for outputting load to be applied to an actuator to be tested, first levers for swinging around a rotational shaft in connection with an output from the load part, an idler link coupled to the output from the actuator to be tested, a second lever coupled to the idler link in a swingable manner and for swinging around a rotational shaft that is arranged coaxially with the rotational shaft of the first levers, and a clutch mechanism for coupling together the first levers and the second lever and undoing the coupling.

A cone brake no-back includes an input no-back disk, an output no-back disk; and a no-back ball ramp mechanism operably connected to the input no-back disk and the output no back disk. An input no-back cone is operably connected to and supportive of the input no-back disk. The input no-back cone is axially loaded by an input no-back spring. An output no-back cone is operably connected to and supportive of the output no-back disk. The output no-back cone is axially loaded by an output no-back spring. A no-back input shaft is operably connected to the input no-back disk and the output no back disk, and a no-back output shaft is operably connected to the output no back disk.

A cone brake no-back includes an input no-back disk, an output no-back disk; and a no-back ball ramp mechanism operably connected to the input no-back disk and the output no back disk. An input no-back cone is operably connected to and supportive of the input no-back disk. The input no-back cone is axially loaded by an input no-back spring. An output no-back cone is operably connected to and supportive of the output no-back disk. The output no-back cone is axially loaded by an output no-back spring. A no-back input shaft is operably connected to the input no-back disk and the output no back disk, and a no-back output shaft is operably connected to the output no back disk.

A damper device includes a first rotary member to which a power of an engine is inputted. The second rotary member is disposed to be rotatable relatively to the first rotary member. The plurality of elastic members elastically couple the first rotary member and the second rotary member in a rotational direction. The seat member is disposed between at least one of the first and second rotary members and one of the plurality of elastic members, and is movable in the rotational direction in accordance with compression and extension of the one of the plurality of elastic members. The auxiliary compression mechanism changes a posture of the seat member so as to compress the one of the plurality of elastic members by a predetermined amount in transmitting the power between the first rotary member and the second rotary member.

A damper device includes a first rotary member to which a power of an engine is inputted. The second rotary member is disposed to be rotatable relatively to the first rotary member. The plurality of elastic members elastically couple the first rotary member and the second rotary member in a rotational direction. The seat member is disposed between at least one of the first and second rotary members and one of the plurality of elastic members, and is movable in the rotational direction in accordance with compression and extension of the one of the plurality of elastic members. The auxiliary compression mechanism changes a posture of the seat member so as to compress the one of the plurality of elastic members by a predetermined amount in transmitting the power between the first rotary member and the second rotary member.

A test system for repeatedly operating the opening/closing of a blind is disclosed. The test system for repeatedly operating the opening/closing of a blind, of the present invention, comprises: an operating device for operating a cord so as to repeatedly adjust the height of a blind; and a control device for controlling the operation of the operating device, wherein the height of the blind is repeatedly adjusted when the movement distance of the cord and a repeated adjustment cycle for the height of the blind are inputted in the control device. According to the present invention, provided is the test system for repeatedly operating the opening/closing of the blind, the system repeatedly simulating the opening/closing motions of the blind so as to evaluate the durability of a clutch and the cord.

A test system for repeatedly operating the opening/closing of a blind is disclosed. The test system for repeatedly operating the opening/closing of a blind, of the present invention, comprises: an operating device for operating a cord so as to repeatedly adjust the height of a blind; and a control device for controlling the operation of the operating device, wherein the height of the blind is repeatedly adjusted when the movement distance of the cord and a repeated adjustment cycle for the height of the blind are inputted in the control device. According to the present invention, provided is the test system for repeatedly operating the opening/closing of the blind, the system repeatedly simulating the opening/closing motions of the blind so as to evaluate the durability of a clutch and the cord.

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.