摘要:
A bucket-wheel excavator has a frame provided with an unsplit-ring bearing that defines an axis for a shaft assembly. This assembly is formed by a solid core shaft extending along the axis through the bearing, an input-side tube shaft fitted over the core shaft to one side of the bearing and having one end turned away from the bearing and formed with an input flange, and an output-side tube shaft fitted over the core shaft to the opposite side of the bearing and having one end also turned away from the bearing and formed with an output flange. The opposite ends of these tube shafts are provided with angularly interengaging formations that rotationally couple them together and bolts press these formations axially into tight engagement with one another. A bucket wheel is carried on the output flange and a drive motor is connected to the input flange for rotating the shaft assembly and bucket wheel about the axis.
摘要:
The invention relates to a self-centering arrangement of microstructured elements, particularly of microoptical components on a substrate serving as carrier. To provide microoptical components with projections that fit into corresponding recesses is known in the art. The invention provides a way to improve the mutual alignment of components (K1, K2) in that a deformation occurs when projections (Z1, Z2) are inserted into the recesses (A). This deformation may concern the projections or the recesses themselves or a molding material introduced between the projections and the recesses. The deformation improves the self-centering properties; in addition, manufacturing tolerances are more easily compensated. If the element cannot be provided with a suitable projection, an intermediate carrier is used, which is, for example, a plastic element produced by a LIGA process.
摘要:
An optical switch has a substrate and a transparent material in which a three-dimensional diffraction pattern is recorded which is capable of diffracting light, the material having non-linear optical properties and extending in the form of a first layer above the substrate. At least one first electrode and at least one second electrode are provided for varying the diffraction pattern in accordance with applied voltages.
摘要:
A high-resolution position sensor utilizes a detector having at least one flat magnetic-field-dependent resistor, in stripe form, whose ends are connectable to an output voltage, and a magnetizable device which is moveable relative to the magnetic-field-dependent resistor and has portions transverse to the direction of movement which exhibit alternately different space permeabilities, with the magnetic-field-dependent resistor extending parallel to and at a distance from said portions by the magnetic-field-dependent resistor. The magnetic field dependent resistor displays anisotropy in the longitudinal direction of the stripes. At least in the area of the magnetic-field-dependent resistor the device is magnetized in or opposite the direction of movement.
摘要:
A magnetic field sensor is disclosed with which the direction of a magnetic field can be determined by using the planar Hall effect. An active layer of the sensor is made of a ferromagnetic amorphous metal which is magnetically isotropic. Thus, the magnetization in the active layer always has the direction of an external magnetic field. The developed planar Hall voltage is a measure of the direction of the magnetic field.
摘要:
An optical hybrid switch is indicated, which guides a voltage-controlled light flux supplied by an incoming passive optical waveguide (1), to at least one of two outgoing passive optical waveguides (1, 1a). The hybrid switch according to the invention preferably uses a NLO-polymer as the electro-optically active elements. The increased attenuation linked to the use of NLO-polymer is kept low by extending the incoming optical waveguide (1) without interruption as one of the outgoing optical waveguides. To steer the light flux to the other outgoing optical waveguide (1a), the light is coupled out from an electro-optically active waveguide structure (5) by an adjustable coupler (6), and coupled to the other outgoing passive waveguide (1a) through another fixed adjustment coupler (8).
摘要:
A transparent substrate is covered with a metal layer which serves as an etch mask for forming a groove, and from which regions are formed which constitute electrodes. At least the groove and the adjacent areas of the substrate are then covered with a layer of a material having electrooptical properties, the material in the groove forming an optical waveguide.
摘要:
A strain gauge comprised of a premagnetized ferromagnetic film wherein any change in length of the film is converted into a planar Hall voltage by employing the property of magnetostriction and the planar Hall effect. Alternately, a change in the length of the film can also be measured as a change in electric conductivity by employing the properties of magnetostriction and magnetoresistance. The strain gauge is deposited on a substrate by thin-film techniques and has a very high sensitivity.
摘要:
Electrical contacts to or mechanical connections between components and provided by using a thin layer of an alloy consisting of metals and metalloids. Such a layer shows excellent adhesion to glass or semiconductor substrates.
摘要:
A bucket wheel bearing assembly adapted to be attached to a bucket wheel support structure for rotationally supporting bucket wheel shaft to the support structure comprises bucket wheel bearing means to be disposed on the bucket wheel shaft, a bearing box situated outside the bucket wheel bearing means and having a central projection with slanted side faces at the entire outer surface thereof and two side walls, the slanted side faces extending radially outwardly toward the central projection from the both side walls, locking means to be disposed alongside of the central projection of the bearing box, and a plurality of fastening means for connecting the locking means around the bearing box, some of the fastening means connecting the locking means and the bearing box to the support structure. The bearing box includes at least a first bearing half and a second bearing half so that the first and second bearing halves, when assembled together, cover the bucket wheel bearing means entirely at the inside surface thereof. The locking means includes inner slanted faces to abut against the slanted side faces of the bearing box so that when the locking means is connected to the bearing box, the first and second bearing halves are tightly connected together with forces radially inwardly applied to the slanted side faces of the bearing box from the locking means.