Abstract:
La presente invención es un dispositivo para el equilibrado de una rueda caracterizado por una construcción sencilla pero con un grado de precisión muy elevado. La invención, de acuerdo a diversos modos de realización, permite una construcción muy sencilla y versátil que puede ser configurada como un kit instalable en soportes para ruedas ya preexistentes. También caracteriza la invención un método de equilibrado basado en el dispositivo.
Abstract:
In summary the invention relates to method and apparatus for estimating electromagnetic forces active in an electric ma- chine. The method comprises the steps of: Measuring (S1) at least one first operation parameter (Y tot ) of the electric machine (20) while the electric machine (20) is operated under at least one operational condition, and Estimating (S2) electromagnetic forces (F tot ) active in an electric machine (20) during operation of the electric ma- chine (20) by multiplying the measured at least one first op- eration parameter (Y tot ) and a respective second operation pa- rameter provided by a stored structural/vibro-acoustic model (M). Due to the present invention, electromagnetic forces within an electric machine, in particular in the air gaps between the stator and rotor of the electric machine can be measured and disturbing noises and/or vibration resulting from the electromagnetic forces can be identified as well as eliminated.
Abstract:
The balancing machine (1) for the balancing of vehicle wheels comprises: - a base frame (2); a balancing shaft (3) substantially horizontal on which can be fixed a vehicle wheel (R) to be balanced; a rotoidal resting unit (6, 7, 8) supporting the balancing shaft (3) in a rotatable way around its own axis; - motor means (9) for placing in rotation the balancing shaft (3) around its own axis; a bending-torsional structure (12, 13, 14) having a first plate (12), a second plate (13) and a third plate (14) arranged in a U-shape, wherein the first plate (12) is associated with the base frame (2) and connects the second plate (13) to the third plate (14) and wherein the second plate (13) and the third plate (14) support substantially opposite sides.of the rotoidal resting unit (6, 7, 8) and are subject to a bending-torsional condition due to the effect of the unbalance of the wheel (R) in rotation on the balancing shaft (3); - sensor means (20, 21) associated with at least one between the second plate (13) and the third plate (14) and suitable for detecting the bending-torsional condition; and a processing and control unit (22) operatively associated with the sensor means (20, 21) and suitable for determining the unbalance of the wheel (R) starting from the bending-torsional condition.
Abstract:
A rotational element monitoring process (700) utilizing a machine condition indicating sensor and monitoring device (100) adapted to a rotating machine (410). The process (700) monitors at least one operating characteristic of a rotating element of a rotating machine. The operating characteristics can include velocity (500), acceleration (500), temperature (600), etc. The process (700) establishes a baseline value (524, 624) for each operating characteristic. An alarm threshold (530, 630) is determined by either a predetermined percentage difference (540) or a predetermined quantified delta (640). The device establishes a measurement schedule (740) retaining the device in a sleep mode (740) and pulsing a condition investigation in accordance with a frequency. The frequency increases (742) when approaching or exceeding an alarm condition. The device (100) indicates an alarm condition by illuminating an alarm indicating light (220, 222, 224).
Abstract:
Ein Rührgerät (1) mit einem in eine zu rührende Masse oder Flüssigkeit einbringbaren Rührwerkzeug, mit einem das Rührwerkzeug antreibenden Antriebsmotor (4), mit einem den Antriebsmotor (4) umschließenden Gehäuse (5) und mit einer Befestigungsstelle (6) zum Festlegen des Rührgeräts (1) in Gebrauchsstellung weist wenigstens einen auf Unwucht ansprechenden Sensor (11) auf, der bevorzugt mit der Steuerung oder der Regelung des Antriebsmotors (4) verbunden oder verschaltet ist und bei unerwünschten oder gefährlichen Schwingungen oder Vibrationen den Antriebsmotor (4) ausschalten oder seine Drehzahl verändern kann.
Abstract:
Turbocharger operational condition is monitored using vibration and temperature sensors to project probable bearing failure. Baseline or nominal vibration levels and heat generation are established under conditions when bearing condition can be taken with confidence to be close to nominal. Departure in operating temperature and vibration at a threshold level from baseline operational condition is taken as an indication of probable failure.
Abstract:
Eine Vorrichtung zum dynamischen Messen der Unwucht des Rotors (6) einer Turbolader-Rumpfgruppe (4), bei welcher der Rotor (6) ein Turbinenrad (7), ein Verdichterrad (8) und eine Welle aufweist, die in einem Mittelgehäuse (5) der Turbolader-Rumpfgruppe (4) gelagert ist, umfasst ein zur Aufnahme des Verdichterrads (8) ausgebildetes Verdichtergehäuse (2) und ein zur Aufnahme des Turbinenrads (7) ausgebildetes Turbinengehäuse (1). Das Verdichtergehäuse (2) ist mittels weicher Federn in wenigstens zwei Raumrichtungen bewegbar an einem Maschinenbett (3) gelagert und weist eine Spannvorrichtung (23) zum Festspannen des Mittelgehäuses (5) auf. Das Turbinengehäuse (1) ist an der Turbinenseite des Mittelgehäuses (5) in einem Bewegungen des Mittelgehäuses (5) und des Turbinenrads (7) in den wenigstens zwei Raumrichtungen zulassenden Abstand von diesen am Maschinenbett (3) lösbar befestigt und zum Beschleunigen des Rotors (6) durch Antreiben des Turbinenrads (7) mittels Druckluft mit einer Druckluftquelle verbindbar ist.
Abstract:
A balancing system and method for reducing imbalance in a rotatable member of a machine is provided. The system includes a plurality of vibration sensors positioned about a stationary portion of the machine, a controller assembly communitively coupled to the plurality of vibration sensors, and a balancing assembly coupled to the rotatable member, said balancing assembly configured to wirelessly communicate with said controller assembly, said balancing assembly configured to modify the weight distribution of the rotatable member in response to a command wirelessly transmitted from the controller assembly. The controller assembly is configured to receive data from the plurality of vibration sensors and determine an imbalance in the rotatable member using the received data.
Abstract:
In this system an unbalancing force, as set by an unbalance load injection device (42) integrated into a work piece balancing machine (10) and its balance computer (60), is injected into an injection plane (IP) through an operating portion of the machine (10). This injected load is in effect transferred by computation to a calibrating plane of a known standard or a masterwork part loaded into and rotatably driven by the balancing machine (10). The values of the unbalancing force as generated by the unbalance injecting device (42) and by calculation into the rotating master are sensed by synchronizer and vibration pick-ups (62). Data reflective of the injected imbalance are furnished to the balance computer (60) for the calibration thereof. The principle of this self-calibration is to use a workpiece drive spindle (16) and unbalance injector device (42) to inject a predetermined load at a known angle into the master to effect master unbalance. This induced unbalance is picked up by synchronizer units (62) and used as the parameters in the calibration process of the balance compute. This allows the machine (10) to accurately determining the imbalance in other work pieces (12). Subsequently conventional unbalanced work parts processed by the calibrated machine can be balanced by the machine with a higher-level of accuracy in accordance with balancing data of the calibrated balance computer.