Patent application number | Description | Published |
20120039552 | SINTERED METAL BEARING, SHAFT MEMBER FOR A PLAIN BEARING UNIT, AND PLAIN BEARING UNIT PROVIDED WITH SAID SHAFT MEMBER - A sintered metal bearing includes: a sintered-metal bearing body formed of a metal different from a metal of a shaft and including a large number of inner pores; and a resin film formed on predetermined parts of a surface of the sintered-metal bearing body and forming a sliding surface. The resin film is formed so that surface openings communicating to the inner pores are kept opened, and resin-film parts adhere to a surface of the shaft. Further, a shaft member used for a sliding bearing unit is incorporated in a sintered-metal sliding bearing including copper mainly or copper and iron, the shaft member including a sliding surface. The shaft member includes: a metal shaft body; and a resin film formed on predetermined parts of a surface of the metal shaft body and forming the sliding surface. The resin film is made of a resin excellent in adhering properties. | 02-16-2012 |
20120283965 | TORQUE CALCULATION METHOD, CALCULATION DEVICE, AND CALCULATION PROGRAM FOR FOUR-POINT CONTACT BALL BEARING - The method for calculating rotational torque between inner and outer rings of a four point contact ball bearing assembly includes an individual torque calculation step for calculating the rotational torque for each of rolling elements and a total sum calculation step for determining the rotational torque. In the individual torque calculation step, data on a contact condition representative of the extent of approximation to the two point contact state or four point contact state is used. For the contact condition data, the four point contact ratio C | 11-08-2012 |
20130006540 | ABNORMALITY DIAGNOSTIC DEVICE FOR ROLLING BEARING, WIND TURBINE GENERATION APPARATUS AND ABNORMALITY DIAGNOSTIC SYSTEM - An effective value operation unit calculates an effective value of a vibration waveform of a hearing, the vibration waveform being measured by using a vibration sensor. An envelope processing unit performs envelope processing on the vibration waveform measured by using the vibration sensor, thereby generating an envelope waveform of the vibration waveform. An effective value operation unit calculates an effective value of an AC component of the envelope waveform generated by the envelope processing unit. A diagnostic unit diagnoses an abnormality of the bearing based on the effective value of the vibration waveform calculated by the effective value operation unit and the effective value of the AC component of the envelope waveform calculated by the effective value operation unit. | 01-03-2013 |
20130008242 | ABRASION SENSING DEVICE, WIND TURBINE GENERATION APPARATUS INCLUDING THE SAME, AND ABRASION SENSING METHOD - When it is determined that a blade is rotating, a control device operates a braking device, and acquires a rotation angle (first rotation angle) from a rotation angle sensor. Then, the control device reverses a nacelle and acquires again a rotation angle (second rotation angle) from the rotation angle sensor. Then, the control device determines whether or not the difference between the first rotation angle and the second rotation angle is greater than a threshold value. When it is determined that the rotation angle difference is greater than the threshold value, the control device determines that a gear or a bearing of a gearbox is worn out. | 01-10-2013 |
20130078098 | ROLLER BEARING, RETAINER SEGMENT, SPACER AND MAIN SHAFT SUPPORT STRUCTURE OF WIND-POWER GENERATOR - A roller bearing comprises an outer ring, an inner ring, a plurality of rollers arranged between the outer ring and the inner ring, and a plurality of retainer segments having a plurality of column parts extending in a direction along a shaft so as to form a pocket for holding the roller, and connection parts and extending in a circumferential direction to connect the plurality of column parts, and continuously lined with each other in the circumferential direction between the outer ring and the inner ring. The column part is positioned at an circumferential end of the retainer segment. Here, a circumferential outer side end face of the column part positioned at the end is flat, and a circumferential inner side end face of the column part positioned at said end is provided with a recess recessed in the circumferential direction to reduce the thickness of the column part. | 03-28-2013 |
20140007657 | STATUS MONITORING SYSTEM AND STATUS MONITORING METHOD FOR ROLLING DEVICE - In order to provide a status monitoring system for accurately determining the contaminant water concentration in a lubricant oil used in a rolling device, the provision is made of a contaminant water concentration monitoring device ( | 01-09-2014 |
20140248018 | ROLLER BEARING, RETAINER SEGMENT OF ROLLER BEARING FOR SUPPORTING MAIN SHAFT OF WIND-POWER GENERATOR, AND MAIN SHAFT SUPPORT STRUCTURE OF WIND-POWER GENERATOR - A tapered roller bearing ( | 09-04-2014 |
20150056079 | ROLLER BEARING, RETAINER SEGMENT, SPACER AND MAIN SHAFT SUPPORT STRUCTURE OF WIND-POWER GENERATOR - A roller bearing comprises an outer ring, an inner ring, a plurality of rollers arranged between the outer ring and the inner ring, and a plurality of retainer segments having a plurality of column parts extending in a direction along a shaft so as to form a pocket for holding the roller, and connection parts and extending in a circumferential direction to connect the plurality of column parts, and continuously lined with each other in the circumferential direction between the outer ring and the inner ring. The column part is positioned at an circumferential end of the retainer segment. Here, a circumferential outer side end face of the column part positioned at the end is flat, and a circumferential inner side end face of the column part positioned at said end is provided with a recess recessed in the circumferential direction to reduce the thickness of the column part. | 02-26-2015 |