A testing apparatus includes a base structure and a supporting structure rotatably coupled to the base structure. The supporting structure includes an engaging portion configured to engage a liquid-retaining article. A load cell assembly connects the base structure to the supporting structure. The load cell assembly includes a load cell configured to measure a reaction force present between the base structure and the supporting structure resulting from an imbalance of the supporting structure about an axis of rotation thereof. The reaction force corresponds to a weight of liquid that has accumulated on the liquid-retaining article following a balancing of the supporting structure about the axis of rotation thereof.

A testing apparatus includes a base structure and a supporting structure rotatably coupled to the base structure. The supporting structure includes an engaging portion configured to engage a liquid-retaining article. A load cell assembly connects the base structure to the supporting structure. The load cell assembly includes a load cell configured to measure a reaction force present between the base structure and the supporting structure resulting from an imbalance of the supporting structure about an axis of rotation thereof. The reaction force corresponds to a weight of liquid that has accumulated on the liquid-retaining article following a balancing of the supporting structure about the axis of rotation thereof.

An apparatus for applying weight material onto a wheel may include a conveyor assembly, upper and lower severing-head assemblies, and upper and lower control arms. The severing-head assemblies may be mounted above and below the conveyor assembly and may include a housing, a severing device and a dispensing mechanism. The dispensing mechanism may position the weight material from a source relative to the severing device. The severing device may separate a predetermined amount of weight material from a source. The control arms may be movably mounted above and below the conveyor assembly and have weight-application tools configured to transfer the predetermined amounts of weight material from the severing-head assemblies to locations on the wheel.

An apparatus for applying weight material onto a wheel may include a conveyor assembly, upper and lower severing-head assemblies, and upper and lower control arms. The severing-head assemblies may be mounted above and below the conveyor assembly and may include a housing, a severing device and a dispensing mechanism. The dispensing mechanism may position the weight material from a source relative to the severing device. The severing device may separate a predetermined amount of weight material from a source. The control arms may be movably mounted above and below the conveyor assembly and have weight-application tools configured to transfer the predetermined amounts of weight material from the severing-head assemblies to locations on the wheel.

Provided is a method to acquire the unbalance of a rotor and a balancing machine, in which, the method to acquire the unbalance of a rotor includes the following procedures: install angle sensor at first position on balancing machine, measure the unbalance of rotor, first unbalance in measuring plane 1 and first unbalance in measuring plane 2 can be measured. Move angle sensor on balancing machine from first position to second position, measure the unbalance of the rotor again, second unbalance in measuring plane 1 and second unbalance in measuring plane 2 can be measured. In the above mentioned two measurements, the unbalance amount of rotor has no change, but the unbalance angle relative to angle reference point on rotor is changed by an angle which equals the angle of the sensor being moved.

A device (1) for receiving and clamping a rotor bearing (6) is provided with at least one bearing block (2) lying transversely to a bearing axis of the rotor bearing (6), a bearing element (4) designed to receive the rotor bearing (6), a clamping arm (12), and a locking device (9). The clamping arm (12) has an engagement element (8) by means of which it can be brought into engagement with the rotor bearing (6). The locking device (9) also comprises at least two engagement elements (8) which are radially movable in the bearing element (4) and can be introduced into radial receptacles (14) in the rotor bearing (6) by actuating the locking device (9), such that a rotor bearing (6) which can be received by the bearing element (4) can be clamped by the engagement elements (8) of the clamping arm (12) and the locking device (9).

A device (1) for receiving and clamping a rotor bearing (6) is provided with at least one bearing block (2) lying transversely to a bearing axis of the rotor bearing (6), a bearing element (4) designed to receive the rotor bearing (6), a clamping arm (12), and a locking device (9). The clamping arm (12) has an engagement element (8) by means of which it can be brought into engagement with the rotor bearing (6). The locking device (9) also comprises at least two engagement elements (8) which are radially movable in the bearing element (4) and can be introduced into radial receptacles (14) in the rotor bearing (6) by actuating the locking device (9), such that a rotor bearing (6) which can be received by the bearing element (4) can be clamped by the engagement elements (8) of the clamping arm (12) and the locking device (9).

A simply-supported fixture for a circular plate, including: an opening end cover, circular sleeve, base, and semicircular-ring convex platform. The base has a positioning step for guidance, the circular sleeve is concentrically installed on the step of the base, and the opening end cover is concentrically installed on the circular sleeve and connects to the base through a reaming hole bolt. A circular plate disposed between the opening end cover and base, and opposite sides of the opening end cover and base are provided with concave platforms. Two semicircular-ring convex platforms of the same diameter are concentrically installed on the concave platforms, the reaming hole bolt is tightened with force, and the circular plate is supported and fixed on the fixture. The circular plate and the semicircular-ring convex platform on the opening end cover and base, are in line contact wherein lines are parallel and concentric having the same radius.

A simply-supported fixture for a circular plate, including: an opening end cover, circular sleeve, base, and semicircular-ring convex platform. The base has a positioning step for guidance, the circular sleeve is concentrically installed on the step of the base, and the opening end cover is concentrically installed on the circular sleeve and connects to the base through a reaming hole bolt. A circular plate disposed between the opening end cover and base, and opposite sides of the opening end cover and base are provided with concave platforms. Two semicircular-ring convex platforms of the same diameter are concentrically installed on the concave platforms, the reaming hole bolt is tightened with force, and the circular plate is supported and fixed on the fixture. The circular plate and the semicircular-ring convex platform on the opening end cover and base, are in line contact wherein lines are parallel and concentric having the same radius.

Provided is a balancing device for a rotating body including at least one unbalance detector to measure the unbalance of the rotating body; two balancing masses to be handled along a handling circumference so as to cancel the unbalance; a position sensor to detect the mutual position of the balancing masses; and a motor to independently handle each of the balancing masses as a function of their mutual position and unbalance.