A transmission wheel assembled of at least two segments (1) on a shaft (12), the inner arc surface (3) of which and the shaft (12) have essentially the same radius (R), and which segments' (1) outer surfaces (9) have profiled surfaces that transmit the power of the transmission wheel. Between the segments' (1) welded-together end faces (4) there are gaps on those sections of the end faces (4) that are not welded, which creates a press fit between the shaft (12) and the inner arc surface (3) of the transmission wheel. The weld connecting the transmission wheel segments' (1) end faces (4) may be incomplete, meaning that it does not reach the shaft (12).

A method for repairing a gear (2) having a number of damaged teeth (4, 4′, 4″), wherein the method comprises the step of removing material from the gear (2) hereby providing a pocket structure (28, 28′, 28″, 28′″), wherein said material includes at least one damaged tooth (4, 4′). Said method further comprises the step of providing a segment (12, 12′, 12″, 12′″) to be inserted into the pocket structure (28, 28′, 28″, 28′″), wherein the segment (12, 12′, 12″, 12′″) has a geometry that fits the geometry of the pocket structure (28, 28′, 28″, 28′″). The method comprises the step of radially inserting the segment (12, 12′, 12″, 12′″) into the pocket structure (28, 28′, 28″, 28′″) and attaching radially extending attachment structures (60, 60′) through at least a portion (18, 18′) of the segment (12, 12′, 12″, 12′″) and further into at least a portion (32, 32′) of the underlying structure (64) of the gear (2).

Pinion formed by two joinable parts mountable on a shaft includes a substantially semi-circular first portion of the pinion; a substantially semi-circular second portion of the pinion; the first portion has a first joining surface and a first portion of a hole concentric with the pinion; the second portion has a second joining surface and a second portion of a hole concentric with the pinion; the first joining surface is adapted to be joined to the second joining surface by means of connection means; characterized in that the connection means includes a first bushing and a second bushing; the first bushing is fixed onto said first portion and protrudes from the first joining surface; said second bushing is fixed onto the first or second portion and protrudes from the first or second joining surface.

A method for repairing a gear part (1) in a wind turbine, in particular repairing damaged teeth of a toothed rim (2). A repair cavity (10) is formed by removing material, including one or more damaged teeth, from the gear part (1) by drilling one or more holes through the gear part (1) along a direction which is substantially parallel to an axis of circular symmetry of the gear part (1). A repair segment (15) comprising one or more replacement gear teeth (16), and having a geometry which matches a geometry of the repair cavity (10), is arranged in the repair cavity (10), and attached to the gear part (1) by introducing one or more fasteners (17) into fastener openings (11, 13, 14) formed in the gear part (1).

Multipart sprocket wheel adapted to engage modular belt modules in a conveyor belt, where said multipart sprocket wheel comprises:—two or more periphery elements, each element having an outer and and inner edge, where sprocket teeth are provided on the outer edge, and where the inner edge has an engagement surface, and where each element has means for being fastened to and adjacent periphery element, such that the two or more periphery elements outer edges forms a full circle;—one or more adapter members where each of said adapter members has an outer and an inner face, said outer face suitable to firmly engage the inner edge of one or more periphery elements, and said inner face adapted to engage a conveyor drive axle.

A girth gear is provided, formed by a plurality of gear segments which are adapted to be secured together in an end to end arrangement to form the girth gear. Each gear segment includes a rim and a web extending from an underside of the rim. Each gear segment also includes at least one flange at each end of the gear segment for joining each gear segment together when the gear segments are in an end to end arrangement. The at least one flange has a side secured to one of the web or the rim.

Embodiments of the present disclosure provide a planetary gearbox. The planetary gearbox includes a housing extending along a first axis; a first coupling member arranged on an inner circumference of the housing; an input component operable to rotate about the first axis; at least one intermediate component, each intermediate component comprising a second coupling member and adapted to be driven by the input component to rotate about a second axis offset from the first axis with the second coupling member engaging with the first coupling member; and an output component coupled to the at least one intermediate component and operable to rotate about the first axis with rotation of the at least one intermediate component, wherein at least one of the first coupling member and the second coupling member comprises a synchronous belt.

A multipart sprocket wheel engages modular belt modules in a conveyor belt. Each multipart sprocket wheel has two or more periphery elements. Each element has an outer edge and an inner edge. Sprocket teeth are provided on the outer edge. The inner edge has an engagement surface. Each element has fasteners for being fastened to an adjacent periphery element. Two or more periphery elements' outer edges form a full circle. One or more adapter members are used. Each adapter member has an outer face and an inner face. The outer face firmly engages the inner edge of one or more periphery elements. The inner face engages a conveyor drive axle.

A transmission wheel assembled of at least two segments (1) on a shaft (12), the inner arc surface (3) of which and the shaft (12) have essentially the same radius (R), and which segments' (1) outer surfaces (9) have profiled surfaces that transmit the power of the transmission wheel. Between the segments' (1) welded-together end faces (4) there are gaps on those sections of the end faces (4) that are not welded, which creates a press fit between the shaft (12) and the inner arc surface (3) of the transmission wheel. The weld connecting the transmission wheel segments' (1) end faces (4) may be incomplete, meaning that it does not reach the shaft (12).

A method for repairing a gear (2) having a number of damaged teeth (4, 4, 4), wherein the method comprises the step of removing material from the gear (2) hereby providing a pocket structure (28, 28, 28, 28), wherein said material includes at least one damaged tooth (4, 4). Said method further comprises the step of providing a segment (12, 12, 12, 12) to be inserted into the pocket structure (28, 28, 28, 28), wherein the segment (12, 12, 12, 12) has a geometry that fits the geometry of the pocket structure (28, 28, 28, 28). The method comprises the step of radially inserting the segment (12, 12, 12, 12) into the pocket structure (28, 28, 28, 28) and attaching radially extending attachment structures (60, 60) through at least a portion (18, 18) of the segment (12, 12, 12, 12) and further into at least a portion (32, 32) of the underlying structure (64) of the gear (2).