63results about "Shaft repair/replacement" patented technology

An insertion tool is provided. The tool includes a flexible section comprising a plurality of rigidizable links, an end effector actuator, and an end effector coupled to the flexible section. A flexible is shaft inserted through the flexible section, wherein torque is transferred from the end effector actuator to the distal end via the flexible shaft to cause a rotation of the end effector. A tool may include a tool-less disconnect interface between the end effector and the flexible shaft.

A fluid film bearing for a rotor hub of a wind turbine includes a first part and a second part rotatably coupled to each other about a longitudinal axis. The first part includes an annular first sliding surface extending in the circumferential direction of the fluid film bearing along the first part. In addition, the second part includes a support structure and a first group of bearing pads coupled to the support structure and having a bearing pad sliding surface configured to slide on the first sliding surface. In addition, the fluid film bearing further includes a seal arranged between the first part and the second part.

Hydrodynamic rotor shaft plain bearing for a rotor shaft (8), in particular of a wind turbine, comprising at least one axial bearing (1) with an axial bearing housing (2) and a plurality of axial bearing segments (5) arranged therein, wherein the axial bearing housing (2) is fastened to a carrier (25), wherein the axial bearing housing (2) has a housing body (2a) with a plurality of radial openings (4), wherein an axial bearing segment (5) is inserted into each opening (4), which axial bearing segment can be inserted and removed from the radial outside, and in that two laterally radially projecting fastening flanges (3) are provided on the housing body (2a), which fastening flanges are supported on support cuts (26) projecting from the carrier (25) and are fastened thereto in such a way that all axial bearing segments (5) are freely accessible from the radial outside.

A drive shaft has a central tubular portion formed of a polymer composite with imbedded fibers. It extends between a first end and a second end. The central tubular portion has an outer peripheral surface. There is at least one ring on the outer peripheral surface of the central tubular portion. A method of repairing a composite material tube includes the steps of (a) identifying a damaged area on a composite tube, and (b) placing a patch on a surface of the tube and over the damaged area.

The application provides a full-roller bearing of a special strip holder of a continuous casting machine and a machining process and equipment, and relates to the field of special bearings of continuous casting machines. The full-roller bearing of the special strip holder of the continuous casting machine comprises a bearing inner ring and a bearing outer ring, the bearing outer ring is composed of two annular rings and the two annular rings are mutually staggered and matched at the joint and riveted by a plurality of rivets, a bearing retainer is arranged between the bearing inner ring and the bearing outer ring, bearing rollers are arranged on both sides of the bearing retainer, the bearing rollers are all rollingly arranged between the bearing inner ring and the bearing outer ring, a V-shaped outwardly opening elastic holder is arranged on the outer periphery of the bearing retainer, and a raceway assembly is axially arranged on one side of the bearing outer ring close to the bearing inner ring. The bearing retainer is provided with the elastic holder, so that the bearing rollers are always close to the bearing outer ring, the accelerated wear is avoided, the raceway body is replaced and ground at the same time, the bearing can continue to be used, and the maintenance and replacement cost is low.

The present invention relates to a mounting arrangement for the articulated mounting of an actuator (10) in a positioning device (9). In order to enable a simpler production and mounting process and in particular to facilitate an exchange of actuators in an existing construction or installation of the positioning device, the mounting arrangement comprises a joint device (8), a bearing (2) supporting a part or an element of the joint device (8), and a bearing seat (1) detachably connected to the bearing (2). Further aspects of the invention relate to a positioning device having such a mounting arrangement and to a device for producing such a mounting arrangement.

The present invention relates to a bearing assembly for supporting a rotor shaft of a wind power generation device. The bearing assembly has an outer housing and a bearing. The bearing has a plurality of sliding bearing segments. The bearing has two annular support bodies, and each support body has a spherical receiving surface. The receiving surface is provided on the outer housing. The sliding bearing segments abut against the receiving surface with spherical abutting surfaces. And one of the two annular support bodies is arranged such that it can be removed in the axial direction with respect to the longitudinal direction of the rotor shaft to be supported in the bearing assembly without having to remove the rotor shaft from the bearing assembly.

The present invention relates to a barrel-type bearing which uses water lubrication, which supports a propulsion shaft of a marine vessel, and in which a plurality of arc pieces are held and retained at the inner circumferential surface of the bearing. A bearing according to the present invention has, at the inner circumferential surface of a cylindrical shell that supports a propulsion shaft of a marine vessel, a pair of positioning plates which are fixed opposite each other on the horizontal axis of the shell, a key member which is fixed to the bottom point Pb part of the shell, a bottom arc piece which engages with the key member, arc pieces which are provided to an upper part of the positioning plates, and arc pieces which are provided to a lower part. The horizontal axis is orthogonal to the center-of-gravity line of the propulsion shaft in a transverse section of the shell. This bearing makes it possible to easily hold and retain arc pieces at the inner circumferential surface of the bearing, and makes it possible to transfer arc pieces that are worn and arc pieces that are not worn to easily restore the bearing.

A system and method for replacing bearings is disclosed. The system and method uses a mount and cover to hold bearings in place.

The present invention relates to a barrel-type bearing which uses water lubrication, which supports a propulsion shaft of a marine vessel, and in which a plurality of arc pieces are held and retained at the inner circumferential surface of the bearing. A bearing according to the present invention has, at the inner circumferential surface of a cylindrical shell that supports a propulsion shaft of a marine vessel, a pair of positioning plates which are fixed opposite each other on the horizontal axis of the shell of the shell, a key member which is fixed to the bottom point Pb part of the shell, a bottom arc piece which engages with the key member, arc pieces which are provided to an upper part of the positioning plates, and arc pieces which are provided to a lower part. the horizontal axis is orthogonal to the center-of-gravity line of the propulsion shaft in the transverse section of the shell. this bearing makes it possible to easily hold and retain arc pieces at the inner not worn to easily restore the bearing.

Disclosed is a method for manufacturing a hybrid rolling bearing (1), wherein the hybrid rolling bearing (1) comprises at least one set (6) of ceramic rolling elements (4), at least one inner ring (10) made from bearing steel, and at least one outer ring (10) made from bearing steel, wherein the method comprises the following steps disassembling (S3) a used hybrid bearing (1) having at least one set (6) of ceramic rolling elements (4), at least one inner ring (8), and at least one outer ring (8), collecting at least one ceramic rolling element (4) from the set (6) of ceramic rolling elements (4), cleaning (S4) the collected ceramic rolling elements (4), providing at least one mint inner ring (10) made from bearing steel and / or at least one outer ring made from bearing steel (10), selecting (S6) at least one ceramic rolling element (4) of the cleaned ceramic rolling elements (4), assembling (S7) a new hybrid rolling bearing (1) using the at least one selected ceramic rolling element (4), and the at least one mint inner ring (10) made from bearing steel and / or the at least one outer ring (10) made from bearing steel.

A track guide assembly for a tracked vehicle, the track guide assembly having a base member adapted to support a track roller, and a shaft member releasably attached or attachable to the base member, the shaft member including a flange portion.

Hydrodynamic rotor shaft plain bearing for a rotor shaft (10), in particular of a wind turbine, comprising a first and a second radial bearing (2, 3) and an axial bearing (12), wherein the first radial bearing (2) has a first radial bearing housing (4) and the second radial bearing (3) has a second radial bearing housing (5), in each of which a plurality of radial bearing segments (6, 7) are provided, and the axial bearing (12) has a separate axial bearing housing (13) with a plurality of axial bearing segments (15) accommodated therein, wherein the axial bearing (12) is arranged between the two radial bearings (2, 3) and the axial bearing housing (13) consists of a plurality of separate housing segments (14, 14a), on which the axial bearing segments (15, 15a) are arranged, wherein each housing segment (14, 14a) is provided on the first and the second radial bearing housing (4, 5), connecting, is fastened and after releasing the fastening from a working position,in which the axial bearing segment(s) (15, 15a) provided thereon are positioned in a working position on the rotor shaft (10), can be brought into a non-working position in which the axial bearing segments (15, 15a) are spaced apart from the rotor shaft (10).

An insertion tool is provided. The tool includes a flexible section (106) comprising a plurality of rigidizable links (102), an end effector actuator (604), and an end effector (108) coupled to the flexible section (106). A flexible is shaft (207) inserted through the flexible section (106), wherein torque is transferred from the end effector actuator (604) to the distal end (110) via the flexible shaft (207) to cause a rotation (502) of the end effector (108). A tool may include a tool-less disconnect interface (720) between the end effector (108) and the flexible shaft (207).

The invention concerns a method for operating a wind turbine (110), the wind turbine (110) comprising at least a roller bearing (114) for supporting the rotor shaft (160), wherein the roller bearing (114) comprises a bearing inner ring (118), a bearing outer ring (120) and a plurality of rolling elements (122, 124) being arranged between the bearing outer ring (120) and the bearing inner ring (118), the method comprising the following steps: - detecting, during operation of the wind turbine (110), a damaged rolling element (134) of the plurality of rolling elements (122, 124), - removing the damaged rolling element (134) from the rotor bearing (114), - operating the wind turbine (110) with the roller bearing (114) comprising the remaining rolling elements (122, 124).

A method for manufacturing a hybrid rolling bearing (1) is disclosed, where the hybrid rolling bearing (1) comprises at least one set (6) of ceramic rolling elements (4), at least one inner ring (10) made of bearing steel and at least one outer ring (10) made of bearing steel, where the method comprises the following steps: detaching (S3) the used hybrid bearing (1), the invention relates to a used hybrid bearing (1) having at least one group (6) of ceramic rolling elements (4), at least one inner ring (8) and at least one outer ring (8), collecting at least one ceramic rolling element (4) from the group (6) of ceramic rolling elements (4), cleaning (S4) the collected ceramic rolling elements (4), providing at least one cast inner ring (10) made of bearing steel and / or at least one outer ring made of bearing steel (10), selecting (S6) at least one of the cleaned ceramic rolling elements (4), assembling (S7) a new hybrid rolling bearing (1) using the selected at least one ceramic rolling element (4) and the at least one cast inner ring (10) made of bearing steel and / or the at least one outer ring (10) made of bearing steel.

Provided is a disassembly-free motor bearing disassembly and assembly method, which comprises: inserting a mounting rod (5) on the end face of an end cap, and sequentially mounting a clamping positioning member (4) and an abutment positioning member (3); pressing the outer end face of a rotor shaft (1) through the abutment positioning member for positioning, and pulling out an old bearing assembly in an axial direction; adjusting the clamping positioning member to clamp the rotor shaft for positioning while adjusting the abutment positioning member so as not to press the rotor shaft, and then pulling out the old bearing assembly in the axial direction from the outer end of the rotor shaft; and sliding a new bearing assembly (b) in the axial direction to the mounting position on the rotor shaft. The method can realize the disassembly-free disassembly and replacement of the motor bearing, thereby improving the disassembling and replacement efficiency, and avoiding the rotor displacement in the disassembly and replacement process.

A mounting assembly is provided for the articulated mounting of an actuator in a positioning device. In order to enable a simpler manufacturing and mounting process and in particular to facilitate the exchange of actuators in an existing structure or installation of the positioning device, the mounting assembly comprises a joint device, a bearing supporting a part or an element of the joint device, and a bearing seat connected to the bearing in a detachable manner. A positioning device with such a mounting assembly and a device for producing such a mounting assembly are also provided.

The invention relates to a method of prolonging pitch bearing lifetime for a wind turbine as well as the pitch bearing itself. The method comprises the steps of: - stopping the rotor (4) from rotating; - removing a plurality of first fastening means used for mounting the blade (5) to the outer bearing ring (24); - mounting a strengthening arc structure (10) on said outer bearing ring (24), opposite the blade (5); - installing a plurality of second fastening means, thereby connecting said blade (5) and said strengthening arc structure (10) to said outer bearing ring (24).

The invention relates to a fluid film bearing (2) for a rotor hub (3) of a wind turbine (1) comprising a first part (10) and a second part (11) rotatably coupled to each other about a longitudinal axis. According to the invention, the first part (10) comprises an annular first sliding surface (14) extending in the circumferential direction of said fluid film bearing (2) along the first part (10). In addition, the second part (11) comprises a support structure (18) and a first group of bearing pads (12, 13) coupled to the support structure (18) and having a bearing pad sliding surface (17) configured to slide on the first sliding surface (14). In addition, the support structure (18) comprises a plurality of openings (20) for replacing the bearing pads (12, 13).

A die apparatus includes a stationary die including a guide bushing, a movable die including a guide post that reciprocates inside the guide bushing, a ball retainer disposed between an inner surface of the guide bushing and an outer surface of the guide post to guide reciprocation of the guide post, and a restriction member coupled to the guide post. The restriction member faces the ball retainer in an axial direction of the ball retainer to restrict separation of the ball retainer from the guide bushing. A distance between the guide bushing and the restriction member in the axial direction when the movable die is located at a top dead center is shorter than a length of the ball retainer in the axial direction.

The present invention permits the repair of rolling contact bearings through a unique combination of material selection and repair process. Bearing raceways may become damaged during their service life. Once damage has occurred, the bearing may need to be replaced. Repairing damaged raceways has not been a viable option due to the combination of high carbon content found in the traditional material alloys along with the application of heat needed to fuse the repair material to the existing raceway. This combination can lead to exceedingly high stresses and brittle microstructure in the attempted repair location. The present invention overcomes the repair issues through the unique selection of an alloy steel capable of providing sufficient hardness while decreasing the resulting thermoelastic stress that occurs during the transformation from austenite to martensite at the repair location thereby reducing the chance of cracking following the repair.

A method for performing uptower maintenance of a wind turbine in order to replace the main bearing on the turbine shaft is disclosed. Embodiments of this method to perform maintenance may include installing a rotor lock to resist rotation of the main shaft during maintenance, providing a lifting device in order to elevate the main shaft, removing the main bearing from its main bearing housing, and installing a replacement split main bearing. A crane may also be installed uptower to assist in the maintenance.

A motor (10) includes a stator (12), a rotor (14), and a bearing assembly (16). The stator (12) includes a bearing shield assembly (24), the bearing shield assembly including a bearing shield (26) and a fixed labyrinth seal ring (28), the fixed labyrinth seal ring having a tortuous labyrinth surface. The rotor (14) includes a rotor shaft (32) and a rotatable labyrinth seal ring (34), the rotatable labyrinth seal ring having a tortuous labyrinth surface, the tortuous labyrinth surface of the rotatable labyrinth seal ring facing the tortuous labyrinth surface of the fixed labyrinth seal ring (28) at a first axial distance (D1). The bearing shield assembly (24) is provided with a fixed contact surface (40), and the rotor (14) further includes a relative contact surface (42), the relative contact surface axially facing the fixed contact surface (40) of the bearing shield assembly (24) at a second axial distance (D2), the second axial distance being shorter than the first axial distance (D1).