A clamping arrangement for the force-fit connection of an outer component to an inner component including an inner conical ring and an outer conical ring wherein one of the rings has leadthrough bores clamping screws and the other ring has threaded bores for the clamping screws to brace the rings against one another via the conical peripheral surfaces, and against the inner and outer component arrangement. At least one leadthrough bore having an ejector thread for an ejector screw and the diameter of the ejector thread being greater than the diameter of the clamping screw. The arrangement including an ejector ring with an ejector bore for the leadthrough of the ejector screw which can be screwed into the ejector thread and an ejector surface for engaging a clamping screw head that is incompletely screwed into the corresponding threaded bore for the transmission of an ejector force onto the clamping screw.

A hub joint assembly for frictionally connecting a shaft to a connector is provided. The hub joint assembly includes a coupling hub including a collar portion and a flange portion. The collar portion includes a bore having an inner surface that is configured to be positioned adjacent to the outer surface of the shaft. The collar portion further includes an outer surface that may be conical. The flange portion extends from the collar portion and is configured to be coupled with the connector. The hub joint assembly further includes a clamp ring including a bore having an inner surface. The inner surface may be conical and configured to mate with the outer surface of the coupling hub. A passage is defined in the clamp ring and extends from an outer surface of the clamp ring to the inner surface of the clamp ring.

In one example in accordance with the present disclosure an apparatus for attaching to a shaft using a wedge is described. The apparatus includes a disc having a longitudinal axis. At least a portion of the disc is insertable into a shaft and is expandable against an inside diameter of the shaft. The disc has a recess at the longitudinal axis. A wedge to be inserted into the recess pushes the portion of the disc that is insertable into the shaft against an inside diameter of the shaft.

In one example in accordance with the present disclosure an apparatus for attaching to a shaft using a wedge is described. The apparatus includes a disc having a longitudinal axis. At least a portion of the disc is insertable into a shaft and is expandable against an inside diameter of the shaft. The disc has a recess at the longitudinal axis. A wedge to be inserted into the recess pushes the portion of the disc that is insertable into the shaft against an inside diameter of the shaft.

A jack assembly and a system for supporting a partially submerged structure. The jack assembly may include a fluid jack including a cylinder and a ram, the cylinder having at least one fluid chamber configured to receive a pressurized fluid to move the ram; and a valve housing removably coupled to the fluid jack for providing fluid communication between the fluid jack and at least one fluid conduit, the valve housing including a link movable from a first position toward a second position, the valve housing being secured to the jack while the link is in the first position, the valve assembly being disconnectable from the jack while the link is in the second position.

A method for checking the design of locking assemblies is provided. A pressure on each contact surface and a torque that can be transferred by a spindle and a bushing after locking assemblies are locked are calculated. The calculated torque is compared with the designed maximum transferable torque to calculate a torque safety coefficient. Based on a minimum fit clearance, a resultant stress of components is calculated and is compared with a yield strength of the material of the components to calculate a strength safety coefficient of the components. A pre-tightening force of the bolts is obtained according to a given pre-tightening moment of the bolts. A maximum equivalent stress of the bolts is calculated to obtain a safety coefficient of the bolts. This method is able to be applied to the manufacturing of the locking assemblies.

The present invention discloses a method for checking the design of locking assemblies, comprising: calculating a pressure on each contact surface and a torque that can be transferred by a spindle and a bushing after locking assemblies are locked, and comparing the calculated torque with the designed maximum transferable torque to calculate a torque safety coefficient; with a minimum fit clearance, calculating a resultant stress of components, and comparing the resultant stress with a yield strength of the material of the components to calculate a strength safety coefficient of the components; and obtaining a pre-tightening force of the bolts according to a given pre-tightening moment of the bolts, calculating a maximum equivalent stress of the bolts, and obtaining a safety coefficient of the bolts. This method in the present invention can effectively verify the rationality of design of locking assemblies, reduce the manufacture risk and increase the yield of products.

A devices for coupling or mounting machine elements with a minimized coefficient of friction, as well as methods of minimizing the coefficient of friction in said devices are described herein. The device includes reciprocal inclined surfaces with a liner for minimizing friction therebetween. The liner, or liners, include an anti-friction fabric for reducing friction between the inclined surfaces.

Fletching wear caused by elastic deformation in the axial direction of an input-side disk 2c due to thrust force of a pressure device is prevented. A female-spline section 13a formed around the middle section in the axial direction of the inner-circumferential surface of a center hole 19 in the input-side disk 2c and a male-spline section 12a formed around the outer-circumferential surface of one end section in the axial direction of an input rotating shaft 1b engage with a spline engagement. A disk-side fitting surface section 22 formed around a portion of the inner-circumferential surface of the center hole 19 in the input-side disk 2c that is adjacent to the other end side of the female-spline section 13a and a shaft-side fitting surface section 23 formed around a portion of the outer-circumferential surface of the input rotating shaft 1b that is adjacent to the other end side of the male spline section 12a are fitted together with an interference fit.

Fletching wear caused by elastic deformation in the axial direction of an input-side disk 2c due to thrust force of a pressure device is prevented. A female-spline section 13a formed around the middle section in the axial direction of the inner-circumferential surface of a center hole 19 in the input-side disk 2c and a male-spline section 12a formed around the outer-circumferential surface of one end section in the axial direction of an input rotating shaft 1b engage with a spline engagement. A disk-side fitting surface section 22 formed around a portion of the inner-circumferential surface of the center hole 19 in the input-side disk 2c that is adjacent to the other end side of the female-spline section 13a and a shaft-side fitting surface section 23 formed around a portion of the outer-circumferential surface of the input rotating shaft 1b that is adjacent to the other end side of the male spline section 12a are fitted together with an interference fit.