摘要:
A variable coaxial shaft for a hydraulic unit includes a shaft body having a variable input shaft interface to drive rotation of a variable input shaft of the hydraulic unit. The variable coaxial shaft also includes a differential assembly interface having a first sealing interface, a second sealing interface, and one or more lubrication ports between the first sealing interface and the second sealing interface. The differential assembly interface is configured to be driven by a differential assembly. The one or more lubrication ports provide a lubrication path to the differential assembly. A shaft length is defined between a first end of the variable input shaft interface and a second end of the differential assembly interface. A ratio of the shaft length to a shaft diameter of the shaft body is between 18.65 and 19.12.
摘要:
A vehicle drive axle half shaft, which belongs to a half shaft used for a vehicle drive axle with an oil-lubricated structure, includes a shaft body (41) and bonding portions located at both ends of the shaft body (41), or includes a shaft body (41), a bonding portion located at one end of the shaft body (41) and a flange (43) located at the other end of the shaft body (41); a helical structure (8) is provided on an outer surface of the shaft body (41), and when the shaft body (41) rotates for driving a wheel hub (7) and a vehicle to move forward, a direction in which the helical structure (8) conveys lubricating liquid is toward one side of a main speed reducer (1). It has a simple structure and a novel design, and is conveniently manufactured, and may keep the amount of oil in various cavities stable, so as to ensure adequate lubrication of various components. Particularly, it has good effects on oil gas exhaustion and cooling of the wheel end mechanism (2), and effectively extends the service life of the drive axle system, thus being suitable for all oil-lubricated vehicle drive axle.
摘要:
A driveshaft for an aircraft ram air turbine, the driveshaft including a cylindrical body having an outer surface, an inner surface, a longitudinal axis, a first end section, a second end section opposite the first end section, and an elongated intermediate section connecting the first end section and the second end section. The outer surfaces of the elongated intermediate section includes at least three separate grooves initiating at a location proximate to the first end section and extending parallel to the longitudinal axis across the outer surface to a location proximate to the second end section, the grooves being separated equidistantly around a circumference of the outer surface. The grooves provide a high lateral bending stiffness and low torsional stiffness such that a drivetrain operates at a frequency below an operating range frequency and the driveshaft at a critical speed above an operating speed.
摘要:
A prop-shaft assembly comprises a hollow shaft having an axially extending inner chamber. A first liner comprises an axially extending, hollow tubular member having a resilient damping member fixed to, and extending outwardly from, the outer surface. A second liner comprises an axially extending, hollow tubular member having a resilient damping member, fixed to and extending outwardly from, the outer surface and having an outer diameter, including the resilient damping member, that is slightly less than an inner diameter of the hollow tubular member of the first liner to facilitate its insertion into the hollow tubular member of the first liner. The hollow shaft is configured to receive the first liner and the second liner, disposed in the first liner, in the axially extending inner chamber wherein the first and second liners operate to attenuate a first frequency and a second frequency during rotation of the prop-shaft.
摘要:
A halfshaft assembly in a vehicle is disclosed. The halfshaft assembly includes a hub and a mating universal joint, such as a constant-velocity joint. The hub has a plurality of hub-teeth arranged annularly about an axis. The constant-velocity joint has a plurality of joint-teeth arranged annularly about the axis and engaged with the hub-teeth. Between each joint-tooth is a joint-root. The top, outermost surface of each tooth facing away from adjacent roots extends at a first angle with respect to the central axis. The root extends at a second angle with respect to the central axis. The angles are different such that the height of the tooth varies along the same tooth along the length of the tooth. Each tooth has involute side surfaces. The joint-teeth form a conical or inverse-conical shape.
摘要:
A hydroformed driveshaft tube formed using a hydroforming process is provided. The hydroformed driveshaft tube comprises a first end portion, a second end portion, and a middle portion. The middle portion is at least partially defined by a circular arc shaped surface of revolution. At least a portion of the middle portion has a diameter greater than a diameter of the first end portion and the second end portion. The middle portion comprises a first distension, a constriction, and a second distension and is formed between the first end portion and the second end portion. The constriction is formed between the first distension and the second distension and the middle portion affects a critical speed and a breathing mode frequency of the hydroformed driveshaft tube. The hydroformed driveshaft tube reduces a cost of a driveshaft assembly.
摘要:
A fan shaft for an air cycle machine. The fan shaft includes a body having an axis passing therethrough and a pilot at one end of the body, the body having a first axial length, the pilot having a second axial length, and the pilot defining an inner diameter with respect to the axis and an outer diameter with respect to the axis, wherein the first axial length is 4.215±0.005 inches (10.706±0.013 cm).
摘要:
A method of lubricating a coupling shaft of a gear pump includes communicating lubricant from a first gear stage along a first splined end section of the coupling shaft and through a first slot in a first radial shoulder of the coupling shaft, and also communicating lubricant from a second gear stage along a second splined end section of the coupling shaft and through a second slot in a second radial shoulder of the coupling shaft. The first radial shoulder is axially spaced from the second radial shoulder by an axial distance SA along an axis of rotation of the coupling shaft. The first and second slots each define a lowermost radial dimension SR from the axis of rotation, with a ratio SR/SA of 0.25-0.77.
摘要:
An agricultural harvester includes an unloading auger carried by a chassis and supplied with cleaned crop material that has passed through a cleaning system. The unloading auger includes a drive auger assembly having a drive coupling and a driven auger assembly. The driven auger assembly includes a hollow tube having an inner surface; an inner rod journaled within the hollow tube and defining a first end and a second end; a coupler attached to the first end of the inner rod that is configured to couple to the drive coupling; and a tube connector rotatably coupling the inner rod to the inner surface of the hollow tube adjacent to the second end of the inner rod. The inner rod is only rotatably coupled to the hollow tube adjacent to the second end of the inner rod.
摘要:
Aspects of the disclosure are directed to a shaft configured with a first hole, a bearing race coupled to the shaft and configured with a second hole and a third hole, and an oil scoop configured to receive oil and provide the oil to the shaft, where the first and second holes are oriented axially with respect to the shaft, and where the third hole is oriented radially with respect to the shaft. In some embodiments, a second oil scoop is configured to receive oil and provide the oil to the shall. The oil scoop and the second oil scoop may be concentric with respect to one another.