摘要:
The invention relates to a plain bearing composite material comprising a steel carrier layer and a bearing coating which is applied to the carrier layer in such a way that it cannot be removed and consists of lead-free aluminium bearing alloy consisting of between 4.4 and 6 wt. % of zinc, between 2.5 and 6 wt % of bismuth, between 1 and 2 wt. % of silicon, between 0.8 and 1.2 wt. % of copper and between 0.2 and 0.8 wt. % of magnesium, optionally a maximum of 0.2 wt. % each of titanium, nickel, manganese, and tin, optionally a maximum of 0.6 wt. % of iron, and also optionally respectively a maximum of 0.1 wt. % of impurity related additives, the total quantity thereof not amounting to more than 1 wt. % of the sum of the constituents. The aluminium bearing alloy forms an aluminium solid solution supersaturated with zinc, said zinc being finely distributed by solution annealing and subsequent chilling.
摘要:
The invention relates to a slide bearing material comprising a metallic supporting layer and a metallic lead-free porous carrier layer which is sintered on the supporting layer and used to receive a sliding layer material based on a polymer, said carrier layer consisting of a tin bronze with bismuth additives. The aim of the invention is to achieve a higher scoring resistance. To this end, the carrier layer consists of a sintering powder consisting of powder particles containing between 9.5 and 11 wt. % of tin and between 7 and 13 wt. % of bismuth and copper, and the powder particles have a bulbous shape deviating from the regular spherical shape but without edges and undercuts.
摘要:
A coupling mechanism for selectively coupling an equipment rack to a stationary receptacle unit and to a mobile equipment cart, the coupling mechanism includes a suspension mount disposed on the equipment rack, a first receptacle element, and a second receptacle element. The first receptacle element is disposed on the stationary receptacle unit and configured to receive the suspension mount of the equipment rack to support the equipment rack on the stationary receptacle unit. The second receptacle element disposed on the mobile equipment cart and configured to receive the suspension mount of the equipment rack to support the equipment rack on the equipment cart. The second receptacle element is movable along a column of the equipment cart.
摘要:
The invention relates to a connecting rod bearing shell or bushing for internal combustion engines or to a main bearing shell for crankshaft mounting in internal combustion engines, made of a sliding bearing composite material having a metal, preferably steel support layer and a metal sliding layer applied thereto. The sliding bearing composite material is suitable for all applications cited and the sliding layer is made up of a copper zinc alloy with 10-25 wt. % Zn. 1-3 wt. % Mn. 1-3 wt. % Ni. 2-6 wt. % Fe: the remainder being copper, and impurity elements, respectively accounting for a maximum of 0.1%, corresponding to a maximum overall sum of 1 wt. % and the sliding layer is exclusively crystallised in the α-phase.
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 assembled flange-bearing shell including a half-shell shaped radial bearing part and an axial bearing part which can be fixed on one side in the area of the axial front face of the radial bearing part, or partial ring-wheel shaped axial bearing parts which can be fixed on both sides. Each axial bearing part has inward projecting retaining tongues located around its radius. The retaining tongues can be engaged in retaining recesses in the area of an axial rim section of the radial bearing part. The flange-bearing shell has two retaining tongues on both sides of the vertex which form an undercut. The undercut is engaged from below by a clip of the radial bearing part which lies axially adjacent to each respective open-edged retaining recess. The clip is curved inward in an axial direction from its extension along the periphery into the retaining recess in order to secure the axial bearing part against detachment.
摘要:
The invention relates to a sliding bearing composite material with a hard metal support layer and a metallic sliding coating which is roll-bonded onto said support layer. The inventive sliding bearing composite is made of an aluminum alloy with tin comprising 10 to 20 percent by mass and with additions of copper and nickel. The sliding layer is in direct contact with the sliding mate. The sliding bearing composite material is thus improved with respect to the loading capacity and plasticity in that the aluminum alloy is comprised of tin, copper, nickel and remaining aluminum, the copper and nickel each have a percentage by mass of 0.2 to 2, and the ratio of percentage by mass of copper to the percentage by mass of nickel is between 0.6 and 1.5.
摘要:
A wrapped slide bearing bushing consists of a composite bushing material including a metal bearing layer, a porous support layer sintered thereon, and a PTFE-based sliding layer, forming the sliding surface of an associated sliding member, said sliding layer also filling the pores of said support layer, and including at least 60 vol % of PTFE, 15-25 volume percent of a metal filler, preferably lead, and optionally 8-12 volume percent of PVDF. To obtain a low coefficient of friction, only varying in a narrow range over a long time period, said slide bearing bushing is formed such that the sliding layer includes 1-3 volume percent of carbon fibers, said carbon fibers being oriented substantially in a preferred direction relative to said composite bushing material, while the relative movement of said bearing bushing and said associated sliding member is substantially transverse to said preferred direction.
摘要:
An external axial rotary piston blower having a housing including a casing part and two side parts of which the casing part encompasses a cylindrical runway surfacing which is formed by two cylinders intersecting each other in a region of an inlet and an outlet and in which two identical pistons having at least one wing portion rotate among each other, such pistons having starting surfaces with a large radius running against a casing runway surfacing and respectively another piston having a starting surface with a small radius running correspondingly against a casing runway surfacing. Shafts of the pistons are offset or shifted in cold condition in a direction of a short housing axis toward the outlet and the housing on the side of the outlet is shorter in axial direction in cold condition than on the side of the inlet.
摘要:
A device for introducing medical instruments into hollow organs, canals, or vessels of a human or animal body, has a tip which is provided with an indentation. At least a first nozzle, aimed rearwardly with respect to the tip and connected to an inner chamber of the tip, extends through the wall of the indentation and is connected to a source of pressurized fluid. The pressurized fluid escaping from the nozzle exerts a force on the tip to advance it into the body, and a instrument coupled to the nozzle tip is thereby transported through the body.