The invention relates to a method for preventive function control in an electromagnetic spring pressure brake for a simpler and more accurate determination of the critical operating state. The spring pressure brake comprises at least one coil, and an armature disk, a coil carrier having compression springs distributed thereon, a control module, and a monitoring module having at least one semiconductor component, a current measuring device, and a voltage measuring device, wherein the method comprises the following steps: Initially, the spring pressure brake is controlled by the control module by means of a voltage. Next, the state variables current (I) and voltage (U) at the electromagnetic spring pressure brake are measured by the monitoring module. Subsequently, a determination variable (T; F) of the electromagnetic spring pressure brake is determined by the monitoring module. Said determination variable (T; F) is summed over a range (a), which extends from the starting point of the actuation to a point (W), at which the armature disk begins to move. At the point (W), a current value is detected, at which the movement of the armature disk begins. The determination variable (T; F) is additionally summed over a range (b), which extends from the point of actuation, when the current (I) again reaches the value detected above, up to the point, at which a constant current is reached. Subsequently, a ratio (X) is calculated from the sum of the determination variable over the range (a) to the sum of the determination variable over the ranges (a) and (b). Upon reaching or exceeding a predetermined value (Y) by the value of the ratio (X), a state signal relating to the spring pressure brake is output.

A brake and method of assembly are provided. The brake includes a friction plate configured for coupling to a rotatable body for rotation with the rotatable body about an axis of rotation, a pressure plate disposed about the axis on a first side of the friction plate and fixed against rotation, and an armature plate disposed about the axis on a second side of the friction plate. An electromagnet is disposed about the axis on an opposite side of the armature plate relative to the friction plate. A spring biases the armature plate in a first axial direction towards the friction plate and away from the electromagnet to engage the brake. A fastener couples the pressure plate to the electromagnet. The fastener conforms to a space between opposed surfaces of the pressure plate and the electromagnet and, upon hardening, bonds the pressure plate to the electromagnet.

A lifting device includes a base part, a connecting part, and at least one shackle drop brake. The base part attaches to an object, such as a loading platform or a load. The connecting part serves to attach a sling, lifting, lashing or tensioning means and is pivotable about a swivel axis relative to the base part. The base part also has a bearing surface which defines an assembly plane. The shackle drop brake acts between the base part and the connecting part. The shackle drop brake has at least one holding point configured to hold a weight of the connecting part when the connecting part is in a swivel position that is angled with respect to a vertical axis extending from the assembly plane.

A lifting device includes a base part, a connecting part, and at least one shackle drop brake. The base part attaches to an object, such as a loading platform or a load. The connecting part serves to attach a sling, lifting, lashing or tensioning means and is pivotable about a swivel axis relative to the base part. The base part also has a bearing surface which defines an assembly plane. The shackle drop brake acts between the base part and the connecting part. The shackle drop brake has at least one holding point configured to hold a weight of the connecting part when the connecting part is in a swivel position that is angled with respect to a vertical axis extending from the assembly plane.

Described herein are eddy current brakes and associated methods of their use, particularly configurations that have a kinematic relationship with at least two rotational degrees of freedom used to tune operation of the brake or apparatus in which the brake is located.

Described herein are eddy current brakes and associated methods of their use, particularly configurations that have a kinematic relationship with at least two rotational degrees of freedom used to tune operation of the brake or apparatus in which the brake is located.

Aspects of the technology relate to a braking assembly for a lateral propulsion system of a high altitude platform (HAP) configured to operate in the stratosphere. Power is supplied to a propeller assembly as needed during lateral propulsion so that the HAP can move to a desired location or remain on station. When lateral propulsion is not needed, power is no longer supplied to the propeller assembly and it may slowly cease rotating. However, in certain situations, it may be necessary to cause the propeller assembly to stop rotating as soon as possible. This can include an unplanned descent. Rapid braking can avoid the propeller blades from entangling in the envelope, parachute or other parts of the HAP. A reusable brake is employed to prevent uncontrolled rotation of the propeller on descent, or otherwise to prevent the propeller from spinning freely when not being used to propel the HAP laterally.

The invention relates to a bearing arrangement (10) having at least one first bearing element (12) and one second bearing element (14), which are connected to each other rotatably relative to each other along a common longitudinal axis (16), wherein the bearing element (10) comprises a braking device (24) which inhibits the relative rotation of the two bearing elements (12, 14) to each other, wherein the braking device (24) comprises a brake element (26) connected to the first bearing element (12), a counter surface (34) connected to the second bearing element (14), and at least one spring element (44) which presses the brake element (26) against the counter surface (34) using the spring force for generating a frictional engagement, and an actuable adjustment device (42), by means of which a contact force by which the brake element (26) is pressed against the counter surface (34) may be reduced, wherein the counter surface (34) is arranged on an extension (38) of the second bearing element (14), which is oriented transversely, in particular perpendicular, to the effective direction of the contact force, wherein said extension (38) is formed integrally with the second bearing element (14).

The invention relates to a bearing arrangement (10) having at least one first bearing element (12) and one second bearing element (14), which are connected to each other rotatably relative to each other along a common longitudinal axis (16), wherein the bearing element (10) comprises a braking device (24) which inhibits the relative rotation of the two bearing elements (12, 14) to each other, wherein the braking device (24) comprises a brake element (26) connected to the first bearing element (12), a counter surface (34) connected to the second bearing element (14), and at least one spring element (44) which presses the brake element (26) against the counter surface (34) using the spring force for generating a frictional engagement, and an actuable adjustment device (42), by means of which a contact force by which the brake element (26) is pressed against the counter surface (34) may be reduced, wherein the counter surface (34) is arranged on an extension (38) of the second bearing element (14), which is oriented transversely, in particular perpendicular, to the effective direction of the contact force, wherein said extension (38) is formed integrally with the second bearing element (14).

A brake assembly includes a brake disc in rotational engagement with a wheel of a vehicle, a brake pad which frictionally engages the brake disc in a dynamic braking operation and a parking brake operation, a dynamic actuator adapted to bring the brake pad and brake disc into the frictional engagement in the dynamic braking operation, and a parking brake actuator associated with the dynamic actuator such that, in the parking brake operation, the frictional engagement of the brake disc and brake pad is maintained.