A method and apparatus for aligning an input shaft of a wind turbine generator with an output shaft of a wind turbine are disclosed. Preferably, the method includes placing a push plate of a wind turbine alignment tool into pressing contact with a selected support flange of a wind turbine generator identified by a misalignment measurement device. With the push plate positioned, an indexing means of the wind turbine alignment tool is advanced along an adjustment link member of the wind turbine alignment tool to impart an alignment force onto the selected support flange to align the input shaft of the wind turbine generator with the output shaft of the wind turbine. The method preferably concludes by rechecking the alignment of the input shaft of the wind turbine generator with the output shaft of the wind turbine.

A utility retractor having a utility adaptor, and having a retractable tether comprised of Ultra High Molecular Weight Polyethylene (UHMWPE) material. The UHMWPE exhibits many important qualities suitable in a utility retractor, including abrasion resistance, the ability to be knotted without tangling, and it is very slippery to achieve a significant useful life. The retractor may also include an energy absorber disposed on the tether configured to prevent the danger of the utility adapter flailing indiscriminately during retraction. The energy absorber can be selectively positioned.

A method for controlling a torque output of a DC electric tool, includes presetting torque levels and voltage ranges corresponding to the torque levels, detecting the current output voltage of a battery and determining the voltage range in which the current output voltage is located, determining whether or not the current voltage range matches the preset torque level or not, and if the current voltage range does not match the preset torque level providing a warning that the torque output cannot reach the preset torque level and calculating and displaying a maximum torque level corresponding to the actual torque output value and, if the current voltage range does match the preset torque level, calculating the current actual torque output value and keeping a PWM modulation value constant if the torque output value conforms to the preset torque level or increasing the PWM modulation value for compensation if the torque output value does not conform to the preset torque level.

A tool for torquing guidance of mating surfaces and related methods are disclosed. The tool includes a plurality of arms, each arm having a proximal end joined at a center pivot point, and a distal end comprising a pointer. The plurality of arms are equidistantly spaced apart radially and may be extendable. The arms and pointers may be locked in an extended position by locking fasteners. Number markings are placed on each arm to indicate a torquing sequence order for proper torquing of a set of fasteners. The tool may be rotated as needed to subsequent sets of fasteners which may be torqued and the process continued until all fasteners of a pair of mating flanges have been torqued and fastened. A percentage dial may indicate the amount of completion of the torquing sequence order. The torquing sequence order may be based on, for example, a quadrant pattern cross-sequence.

A tool for torquing guidance of mating surfaces and related methods are disclosed. The tool includes a plurality of arms, each arm having a proximal end joined at a center pivot point, and a distal end comprising a pointer. The plurality of arms are equidistantly spaced apart radially and may be extendable. The arms and pointers may be locked in an extended position by locking fasteners. Number markings are placed on each arm to indicate a torquing sequence order for proper torquing of a set of fasteners. The tool may be rotated as needed to subsequent sets of fasteners which may be torqued and the process continued until all fasteners of a pair of mating flanges have been torqued and fastened. A percentage dial may indicate the amount of completion of the torquing sequence order. The torquing sequence order may be based on, for example, a quadrant pattern cross-sequence.

A power tool is configured such that at least one accessory is mountable in a detachable manner. The power tool includes at least one camera and a determining part. The at least one accessory may be an auxiliary handle and/or a cover, which at least partially covers a tool accessory mounted on the power tool in a detachable manner. The determining part is configured to perform image processing on image data output from the at least one camera and to determine whether the state of the at least one accessory is normal based on at least whether the at least one accessory is mounted on the power tool.

A power tool is configured such that at least one accessory is mountable in a detachable manner. The power tool includes at least one camera and a determining part. The at least one accessory may be an auxiliary handle and/or a cover, which at least partially covers a tool accessory mounted on the power tool in a detachable manner. The determining part is configured to perform image processing on image data output from the at least one camera and to determine whether the state of the at least one accessory is normal based on at least whether the at least one accessory is mounted on the power tool.

An electric tool system includes an electric tool device and a camera device. The electric tool device has a drive unit and an electric tool communication unit. The drive unit performs tightening work of tightening a tightening component to a work target. The electric tool communication unit performs communication with outside. The camera device has a fixing unit, an image capturing unit, and a camera communication unit. The fixing unit is removably attached to the electric tool device. The image capturing unit captures an image of at least the work target. The camera communication unit performs communication with the outside.

An electric tool system includes an electric tool device and a camera device. The electric tool device has a drive unit and an electric tool communication unit. The drive unit performs tightening work of tightening a tightening component to a work target. The electric tool communication unit performs communication with outside. The camera device has a fixing unit, an image capturing unit, and a camera communication unit. The fixing unit is removably attached to the electric tool device. The image capturing unit captures an image of at least the work target. The camera communication unit performs communication with the outside.