摘要:
The invention relates to a plain bearing composite material comprising a steel carrier layer, a carrier layer which is cast, sintered or cladded thereon, the carrier layer being made of bronze or brass, and a bearing coating on the carrier layer or on an intermediate layer, the bearing coating being made of a bearing coating material based on aluminium/tin/copper, to increase load-bearing capacity and resistance to wear of the plain bearing composite material. According to the invention, the composition of the plain bearing materials is AlSn(22-30)Cu(2.3-2.8), optionally, comprising upto 2 wt. % Ni, Si, Mn and impurity related elements up to, respectively, 0.5 wt. %, the total quantity thereof not amounting to more than 1 wt. %, and the hardness of the bearing coating being between 110-150 HV 0.002.
摘要:
The invention relates to a plain bearing shell for supporting an engine crankshaft or camshaft, or as a connecting rod bearing shell of an engine, the plain bearing shell comprises a radially outward protruding holding projection in the region of the separating surface of the plain bearing shell. In order to simplify handling of the plain bearing shell during assembly, the bearing shell is formed in such a way that the holding projection merges continuously into one separating surface of the plain bearing shell, and is formed by a stamping tool from the outside of the plain bearing shell by an approach in which, in the region of the separating surface), the stamping tool compressively deforms the material on the outside of the plain bearing shell, essentially tangentially relative to the plain bearing shell and toward the separating surface, while a counter-holding mechanism is applied to the separating surface, to which mechanism the formed material of the holding projection extends.
摘要:
A bearing arrangement of an external axial rotary piston blower for gaseous medium having a housing which consists of an interior runaway surface and two side parts through which shafts project upon which pistons rotating therewith form working chambers. The shafts of these pistons have ball bearings with lip flap or face seals for sealing-off of gas pressure in the working chambers as well as externally of these bearings having transmission gears journalled with respect to the side parts. Bearing necks or collars are formed and provided with the ball bearings for the shafts of the pistons and these annular grooves are open extending radially outwardly. Groove walls on the transmission side along with inner edges of the gear rings of the gears of the transmission form an annular gap of closest narrow tolerance. A further annular gap can be provided between the bores for the shafts and the bearing necks and the hubs of the gears of the transmission. The annular gaps have a width in a range of a tenth to a twentieth of a millimeter of narrowest close tolerance. An annular chamber is arranged on a side of an end plate of shaft toward the side part. A passage communicates with gap chambers between one end plate of a shaft and an adjoining side part on the one hand. A check valve communicates via a bore in the side part on the other hand.This is a continuation of copending allowed parent application Ser. No. 058,922-Schubert filed June 5,1987, now U.S. Pat. No. 4,797,078-Schubert dated Jan. 10, 1989 and belonging to the assignee of the present invention.
摘要:
A bearing arrangement of an external axial rotary piston blower for gaseous medium having a housing which consists of an interior runway surface and two side parts through which shafts project upon which pistons rotating therewith form working chambers. The shafts of these pistons have ball bearings with lip, flap or face seals for sealing-off of gas pressure in the working chambers as well as externally of these bearings having transmission gears journalled with respect to the side parts. Bearing necks or collars are formed and provided with the ball bearings for the shafts of the pistons and these annular grooves are open extending radially outwardly. Groove walls on the transmission side along with inner edges of the gear rings of the gears of the transmission form an annular gap of closest narrow tolerance. A further annular gap can be provided between the bores for the shafts and the bearing necks and the hubs of the gears of the transmission. The annular gaps have a width in a range of a tenth to a twentieth of a millimeter of narrowest close tolerance. An annular chamber is arranged on a side of an end plate of shaft toward the side part. A passage communicates with gap chambers between one end plate of a shaft and an adjoining side part on the one hand. A check valve communicates via a bore in the side part on the other hand.
摘要:
In the operation of a fuel cell of a fuel cell system, water contained in the exhaust gas is stored in a water tank. The water tank has means for discharging the water in increments or portions. For example, the water can exit as droplets through the porous floor surface of the water tank, and be carried off by the driving wind while the vehicle is driving; or it can be collected at a wall of a water tank and fed into lines, returning it to the exhaust gas flow as droplets.
摘要:
The invention relates to a slide bearing composite material (2) comprising a metallic supporting layer (4), a metallic porous carrier layer (6) that is sintered or sprayed on the supporting layer and has a thickness of between 100 and 500 μm. especially between 200 and 350 μm. and a sliding layer (10) forming a sliding surface for a sliding partner and consisting of a sliding layer material (8) based on a polymer, which also fills the pores of the carrier layer (6) and optionally comprises fillers especially improving the tribological properties. The aim of the invention is to reduce the increase of the thickness of the wall as a result of the deformation. To this end, the porous carrier layer consists of spattered particles having a completely irregular, non-circular geometry, and has a pore volume of at least 40 vol. % before the deformation process.
摘要:
The invention relates to a big end bearing shell (4, 6) for a connecting rod (2), consisting of titanium or a titanium alloy. The shell comprises a support layer (8, 20) consisting of steel and an anti-friction layer (16, 26) for the crankshaft. According to the invention, the back of the support layer (8, 20) is clad with a layer (10, 22) of tin bronze material, with a thickness of 10-50 μm to prevent fretting corrosion and frictional abrasion.
摘要:
A manually operated press has an actuating member, the movement of which being translated into a stroke movement of a press ram. A stroke stop is provided for inhibiting an undesired stroke movement of the press ram. The stroke stop comprises a first sensor for detecting the stroke movement of the press ram as well as a clutch. The clutch is actuated under the control of signals of the first sensor and is adapted to inhibit a transmission of force between the actuating member and the press ram.
摘要:
An aluminum-based material for anti-friction bearings composed of an aluminum alloy with 10-25 wt % tin or 5-25 wt % lead, impurity-caused components characterized by 0.75-2.5 wt % iron and an alloy additive capable of forming an intermetallic compound having a spherical phase homogeneously distributed in the aluminum alloy. The alloy additive is one of: a) manganese and silicon, in which the weight percentage fractions of manganese and silicon are at least half the weight percentage fraction of the iron and for manganese, at most 3 wt %, and for silicon, at most 2 wt %; b) 0.1-0.5 wt % cobalt; and c) 0.1-0.5 wt % molybdenum.
摘要:
The invention relates to a rolled-up plain bearing bush made from a metal/plastic composite plain bearing material whose wall has a thickness of at least 0.75 mm and which can be pressed into an opening of said bearing to form a medium-force fit. The inventive bearing bush also comprises a metal supporting layer and a sliding layer. In order to reduce weight and corrosion, the plain bearing bush is characterized in that the metal supporting layer is made of an aluminum alloy and the sliding layer consists of an expanded aluminum metal alloy section and a mixture of plastic sliding material that is applied to the expanded metal section and in the openings thereof in addition to optionally containing fillers that improve caloric conductibility and tribiological properties and the supporting layer is glued using an additional PFA-layer arranged therebetween.