Abstract: An information generating device includes a control unit for causing a motor to rotate a pinion gear meshing with a ring gear while a predetermined braking force is applied to brake rotation of a turnable part of a wind turbine, thereby causing a fastening part to deform, where the fastening part is provided to fixedly attach the motor to a target part, a deformation amount obtaining unit for obtaining an amount of deformation experienced by the fastening part, and an information generating unit for generating correlation information indicating a correspondence between a driving torque of the motor and the amount of deformation experienced when the driving torque is used to rotate the motor.
Abstract: A rotation mechanism according to the disclosure includes: an output portion for outputting, to a mating member, rotation of a drive source producing a rotational force; a coupling member for coupling the mating member and the output portion by elastic deformation; and an anti-rotation portion for preventing relative rotation between the mating member and the output portion.
Abstract: If irregular movement is detected in a given one of left and right spoilers, a spoiler control device outputs a retracting signal for the given one of the spoilers and refrains from outputting the retracting signal for the other of the left and right spoilers, and if the difference between the angles of the left and right spoilers becomes equal to or less than a specified value, the spoiler control device outputs the retracting signal for the other of the left and right spoilers.
Abstract: A speed reducer according to one aspect of the present disclosure includes an input rotating body, a speed reducing mechanism unit, and a tubular case. The speed reducer is rotatable when acted upon by power fed from a drive device. The speed reducing mechanism unit reduces a speed of rotation of the input rotating body. The tubular case covers an outer surface of the speed reducing mechanism unit and rotates when acted upon by speed-reduced power from the speed reducing mechanism unit. An output arm is formed integrally with the tubular case, the output arm extending radially outward from an outer peripheral surface of the tubular case and configured to transmit a manipulating force to an outside.
Abstract: For each of actuators, the partial load ratio is output. An output device for a drive device of a wind turbine includes an obtaining unit for obtaining information relating to a load applied to each of a plurality of actuators, where the actuators are included in the drive device of the wind turbine and configured to cooperate with each other, a processing unit for, based on the information obtained by the obtaining unit, calculating a partial load ratio, where the partial load ratio represents a ratio of a load on each of the actuators to a total load and the total load is a sum of the loads on the respective actuators, and an output unit for outputting the partial load ratio.
Abstract: A wind turbine system includes: a ring gear; a yaw drive unit including a pinion gear meshing with the ring gear, the yaw drive unit being configured to rotate the pinion gear; a yaw brake unit configured to generate a braking force for inhibiting rotation of the ring gear; a load information acquiring unit configured to acquire an external load applied to the ring gear; and a control unit configured to release the braking force of the yaw brake unit when a rotational torque generated on the ring gear by the yaw drive unit has been larger than the external load acquired by the load information acquiring unit, in switching the ring gear from a stationary state to a rotating state.
Abstract: A speed reducer includes an input rotating body, a base block, a speed reducing mechanism unit and a tubular case. The input rotating body is rotatable when acted upon by power from a drive device. The base block supports the input rotating body rotatably. The speed reducing mechanism unit reduces a speed of rotation of the input rotating body. The tubular case externally covers the speed reducing mechanism unit and the base block. The tubular case is assembled onto the base block such that they are rotatable relative to each other. The speed-reduced rotation from the speed reducing mechanism unit is output from one of the tubular case and the base block. The base block has a fixture flange integrally formed therewith. The flange extends from a radially inner region within the tubular case radially outward beyond an outer peripheral surface of the tubular case.
Abstract: A container includes a pouch formed of a film material and in which a lubricant composition with a worked penetration of 300 to 450 is filled and sealed, and a spout fixed to the pouch.
Abstract: An aspect of the present invention provides a speed reducer including a supporting block, an input gear rotatably supported on the supporting block, an intermediate gear meshing with the input gear, an output gear meshing with the intermediate gear, and a gear position changing mechanism configured to change a position of the intermediate gear relative to the input and output gears.
Type:
Grant
Filed:
March 25, 2020
Date of Patent:
December 26, 2023
Assignee:
Nabtesco Corporation
Inventors:
Koji Nakamura, Yuta Nagaya, Mitsuru Shimamoto, Takayuki Okimura
Abstract: A sensor relating to one aspect of the present invention includes a first electrode, a second electrode arranged relative to the first electrode with a gap being provided therebetween, a sensor body having the first and second electrodes arranged therein, and a catching portion arranged in the gap and having an outer peripheral surface made of an insulating material. Electric connection is established along the outer peripheral surface via conductive particles gathering to the catching portion.
Abstract: A sensor device is attached to, for example, a mechanical component. The sensor device includes a sensor unit, an output unit, and an energy harvesting unit. The sensor unit measures a condition related to the mechanical component. The output unit outputs information that is based on the measurement result from the sensor unit to the outside. The energy harvesting unit converts energy that exists in an external environment into electric power and supplies an electric power for operating at least one of the sensor unit and the output unit.
Abstract: A speed reducer according to the invention includes: a main speed reduction unit decelerating rotation from an input side and transmitting decelerated rotation to an output side; a fixed block coupled to the main speed reduction unit and rotatably supporting an input gear coupled to a rotary drive source; an output gear transmitting rotation of the input gear to an input side of the main speed reduction unit; and an intermediate gear meshing with the input gear and the output gear and rotatably supported by the fixed block.
Abstract: A drive unit includes an actuator from which an output rod protrudes at one end of a cylinder and being coupled to a flap of an aircraft, an attachment disposed on the other side of the cylinder, a reaction link coupled to the flap at one end and to the attachment at the other end, and a connection-disconnection section allowing the cylinder and the attachment to be coupled to and separated from each other.
Abstract: A shaft retention mechanism of the present invention includes: a casing forming a housing space containing a lubricant; an input shaft penetrating a through-hole formed in the casing, the input shaft extending through the casing; a sealing ring encircling the input shaft in the through-hole, the sealing ring sealing between the input shaft and the casing; and a bearing disposed on an opposite side of the sealing ring to the housing space, the bearing rotatably supporting the input shaft in the through-hole.
Abstract: The present disclosure relates to a manufacturing method of a speed reducer. The speed reducer includes an outer tube, a shaft portion, an input shaft, a first bearing, a speed reducing portion, and an attachment member. The shaft portion has a first receiving surface and a shaft end surface. The outer tube has a second receiving surface. The first bearing has a first inner ring and a first outer ring. The first receiving surface contacts the first inner ring. The second receiving surface contacts the first outer ring. A first machining accuracy is obtained based on a first parallelism between the first receiving surface and the shaft end surface. A second machining accuracy is obtained based on a second parallelism between the second receiving surface and the flange mounting surface. The manufacturing method includes performing machining such that the first machining accuracy becomes higher than the second machining accuracy.
Abstract: One aspect of the present invention provides a method for manufacturing a strain wave gear device. The method includes steps of measuring a between pin diameter of an internal gear, measuring an over pin diameter of an external gear, where the external gear is to be placed radially inside the internal gear, configured to mesh with the internal gear, and flexible, measuring a dimension of a bearing, where the bearing is to be placed radially inside the external gear, and flexible, and machining an elliptical cam, where the elliptical cam is to be placed radially inside the bearing, and configured to flex the external gear in a non-circular manner. The elliptical cam is machined based on the measured dimensions of the internal gear, external gear and bearing such that the internal and external gears mesh with each other at a constant position.
Abstract: A steering device includes: a steering unit steered by a driver; a drive unit rotating for imparting an auxiliary force to the steering unit; a first control unit calculating a load torque that corresponds to a reaction force from a road surface and is estimated based on a value measured in the steering unit and the drive unit, the first control unit also calculating a target steering torque for the steering unit based on the calculated load torque; and a second control unit calculating the auxiliary force of the drive unit to achieve the target steering torque calculated by the first control unit.
Abstract: A speed reducer with a falling-off prevention feature according to an aspect of the disclosure includes: a speed reducer for decelerating rotation from a drive source that generates a rotational force and outputting the decelerated rotation, the speed reducer being mounted to a robot; and a coupling member for coupling the speed reducer to the robot. The coupling member maintains coupling between the speed reducer and the robot irrespective of displacement of the speed reducer relative to the robot.