A drive sub-assembly includes a hub extending from a first end face to a second end face along a longitudinal axis. The hub may have an outer circumferential surface arranged to engage a first bearing assembly and an inner circumferential surface arranged to engage an output shaft. The drive sub-assembly further includes a gear attached to the second end face of the hub. The gear may have a second inner circumferential surface that is arranged to directly engage a second bearing assembly.

The present invention discloses a semi-trailer-loaded turbine fracturing equipment, which adopts a linear connection of the whole equipment and a special chassis design, so that the center of gravity is double lowered to guarantee its stability and safety, the structure is simpler, the investment and operation costs are decreased, the risk of total breakdown of the fracturing site is reduced, and the equipment has a good transmission performance and is suitable for continuous operation conditions with long time and heavy load. The plunger pump is improved in that the distance between the center of rotation of the bellcrank and the center of rotation of the crankshaft is optimized so that the rated input power is increased to 5000-7000 hp, the transmission ratio of the reduction gearbox integrated on the plunger pump is optimized so that the maximum input speed can reach 16000 rpm, the superhigh speed allows the reduction gearbox to be connected directly to the turbine engine to address the problem that the turbine fracturing equipment is decelerated through two reduction gearboxes, thus decreasing the weight of the vehicle and reducing the overall size of the equipment.

An engine synchronisation arrangement of an internal combustion engine having a crank-shaft and a camshaft geared together with a fixed rotation ratio includes a crank-shaft wheel cooperating with a first sensor and, a camshaft wheel cooperating with a second sensor, both wheels being provided with peripheral features. Both sensors detect the features and communicate to an ECU binary signals. The features of the crank-shaft wheel are arranged in a sequential pattern, and a sliding window of a specific width covers a unique set of features corresponding to a unique string of consecutive bits mapping to a unique angular position of the crank-shaft.

Disclosed is a power generating apparatus using a hammer comprising: a main body including a base body in which an operating fluid is stored, a first inner connecting rod provided to be movable to one side of the base body, and a spring provided at the other side of the base body; a hammer portion of which one side is rotatably coupled to the main body to hit the first inner connecting rod and the other side is connected to the spring; a hammer driving portion which hits the first inner connecting rod by the hammer portion to supply power; a crankshaft portion which rotates by receiving a force for hitting the hammer portion by the hammer driving portion; and a power transmission portion which is connected to the crankshaft portion to rotate together with the crankshaft and connected to a power generator.

Disclosed is a power generating apparatus using a hammer comprising: a main body including a base body in which an operating fluid is stored, a first inner connecting rod provided to be movable to one side of the base body, and a spring provided at the other side of the base body; a hammer portion of which one side is rotatably coupled to the main body to hit the first inner connecting rod and the other side is connected to the spring; a hammer driving portion which hits the first inner connecting rod by the hammer portion to supply power; a crankshaft portion which rotates by receiving a force for hitting the hammer portion by the hammer driving portion; and a power transmission portion which is connected to the crankshaft portion to rotate together with the crankshaft and connected to a power generator.

A slide member is provided with a base material and a slide layer. The slide layer is disposed on at least a portion of the base material. The slide layer contains a solid lubricant and a plurality of hard particles, the hard particles being harder than the solid lubricant.

A slide member is provided with a base material and a slide layer. The slide layer is disposed on at least a portion of the base material. The slide layer contains a solid lubricant and a plurality of hard particles, the hard particles being harder than the solid lubricant.

An azimuth thruster system includes a pod configured to rotate relative the hull of the ship about an azimuthal axis of the pod, a propeller shaft extending from the pod and being configured to rotate relative to the pod about a central axis of the propeller shaft, an outer shaft disposed at least partially in the pod and configured to be driven by a first primary prime mover, an inner shaft disposed at least partially within the outer shaft and configured to be driven by a second primary prime mover, and a pod gear unit disposed within the pod and coupled to the outer shaft, the inner shaft, and the propeller shaft. The outer and inner shafts are configured to rotate at least one of the pod and the propeller shaft based on directions and magnitudes of the torques generated by the first and second primary prime movers.

A gas turbine engine comprises a gearbox comprising a sun gear, an annulus gear, a plurality of planet gears and a carrier. The carrier comprises a primary structure and at least one reinforcing structure. The primary structure comprises a first material and the at least one reinforcing structure comprises a second material. The primary structure includes a first ring, a second ring spaced axially from the first ring and a plurality of circumferentially spaced axles extending axially between the first ring and the second ring. Each planet gear is rotatably mounted on a respective one of the axles by a bearing. The reinforcing structure is secured to the primary structure and the reinforcing structure comprises a particulate reinforced material or a fiber reinforced material. The reinforcing structure increases the stiffness of the carrier and reduces the weight of the carrier.

A gas turbine engine comprises a gearbox comprising a sun gear, an annulus gear, a plurality of planet gears and a carrier. The carrier comprises a primary structure and at least one reinforcing structure. The primary structure comprises a first material and the at least one reinforcing structure comprises a second material. The primary structure includes a first ring, a second ring spaced axially from the first ring and a plurality of circumferentially spaced axles extending axially between the first ring and the second ring. Each planet gear is rotatably mounted on a respective one of the axles by a bearing. The reinforcing structure is secured to the primary structure and the reinforcing structure comprises a particulate reinforced material or a fiber reinforced material. The reinforcing structure increases the stiffness of the carrier and reduces the weight of the carrier.