Abstract:
A bearing for refrigerating machine compressor and a compressor having the bearing, wherein the bearing (1) comprises a porous bronze (1b) and resin (1c) impregnated into pores provided on the porous bronze (1b) which are formed on a back metal (1a), the porous bronze (1b) and resin (1c) are exposed sparsely on the surfaces in contact with a crank shaft (5), the rate of the exposed area of the porous bronze (1b) on the contact surface (1d) is 5 % or over to 60 % or less, whereby a seizure resistance at the time of boundary lubrication of the bearing for refrigerating machine compressor can be increased and the amount of wear due to sliding of the bearing can be decreased.
Abstract:
Die Erfindung betrifft eine Lageranordnung zur Lagerung einer Welle einer Einrichtung zur Energiegewinnung aus einer Wasserströmung, wobei die Lageranordnung wenigstens ein Radialgleitlager und wenigstens ein Axialgleitlager aufweist und wobei die Lageranordnung durch von außen eindringendes Wasser schmierbar ist.
Abstract:
An improved axial-piston energy converting device is provided by utilizing a thin ceramic wear plate insert, having a typical thickness of only about .005 to .040 inches in thickness, as a cam surface secured by atmospheric pressure to an underlying support surface of a steel cam plate support structure. Attachment of the wear plate to the cam plate supporting surface is accomplished by polishing both a supporting surface of the cam plate, and a mating surface of the wear plate to a very smooth finish, and wiping a thin film of a fluid such as oil onto one of the polished surfaces prior to placing the wear plate onto the supporting surface. The highly polished surface, together with the light film of oil, results in a joint that is essentially air tight. Atmospheric pressure acting on the cam surface of the wear plate serves to hold the wear plate tightly in place on the support surface in the same manner that a pair of Johansson blocks are held together if their highly polished surfaces are mated.
Abstract:
The invention relates to a bearing arrangement (10) for supporting a shaft (16) of a device for extracting energy from a water current (14), wherein the bearing arrangement comprises at least one radial sliding bearing (18) and at least one axial sliding bearing (20, 22), and wherein the bearing arrangement can be lubricated by water penetrating from the outside.
Abstract:
The invention relates to a method for producing a ball-and socket joint (1) between a slipper (3) and a piston (2) of a piston engine, comprising the following steps: configuring the slipper (3) with a joint ball (4) at the end opposite the bottom surface (21); configuring the piston (2) with an overmeasure (x) on its lateral surface (2c) and a hemispherical joint recess (5) with a recess edge (7) that protrudes beyond the equator (6) of the joint recess (5), for the joint ball (4) at a front end of the piston (2); bringing together the joint recess (5) and the joint ball (4); beading the recess edge (7) into a form in which it grips the joint ball (4) from behind; and finishing the lateral surface (2c) of the piston (2). The following steps are also provided for the purpose of simplifying and improving the production process: bringing together the joint recess (5) and the joint ball (4) after finishing the lateral surface (2c) of the piston (2); locally heating the recess edge (7) to a temperature that reduces its hardness; and beading the recess edge (7).
Abstract:
An engine/pump having a crank shaft (1) with a shaft axis (1A) and a crank axis (2A) oblique to the shaft axis (1A) which intersect with each other at X, piston/cylinder assemblies (6, 12) to rotate about the shaft axis (1A) and having a reciprocal axis between its top dead centre and bottom dead centre, the reciprocal axis midway between TDC and BDC being normal to a line projected from X, piston control means (3) to rotate about said crank axis (2A), connection means for each piston (6) from said piston control means (3), to allow reciprocal movement of the pistons (6) within the cylinders (12) as the assemblies (6, 12) rotate about the shaft axis (1A), cylinder head (5) which holds the cylinders (12) in an array, the head (5) including at least one port per cylinder, and ported means (13) relative to which said cylinder head (5) moves sealably to allow timed to the reciprocal movement of each piston (6) in its cylinder (12) and the rotational position, the opening and closing of each cylinder (12). Each cylinder (12) is indexed at a predetermined rate to the relative rotation of the crankshaft (1) through gearing (10). An alternative embodiment of the invention is also disclosed as shown in the figures.
Abstract:
PURPOSE: To improve the reliability of a bearing by working the surface of the bearing in such a manner that both a composite material and a porous bronze- group alloy are previously exposed on the surface of the bearing. CONSTITUTION: On the surface of a bearing, a porous alloy 16 is exposed, so that even if a crankshaft 4 slides, a surface layer is not stripped, and a bearing clearance is not enlarged. As the surface of the bearing is formed of a composite material 17 composed of the porous alloy 16, plastic resin having a self-lubricating property and a lubricating material, even if oil supply temporarily goes wrong and the boundary lubricating state occurs, hesitation of slide due to seizure will hardly take place. A refrigerant is mixed in lubricating oil in an oil sump of a general compressor for a refrigerator. When such lubricating oil is supplied, the mixed refrigerant is caused to boil by sliding heat in the bearing, so that the boundary lubricating state is easy to happen at the bearing portion. Therefore, the operation can be conducted with high reliability by providing the above bearing. COPYRIGHT: (C)1984,JPO&Japio