A brake static plate assembly, a brake and an elevator system. The brake static plate assembly includes a first static plate and a second static plate. The first static plate includes a first outer edge and a second outer edge which are adjacent to each other; a first inner edge provided with a first shaft mounting notch thereon; a first set of coils disposed on a braking surface of the first static plate. The second static plate includes: a third outer edge and a fourth outer edge which are adjacent to each other; the second inner edge which is matched with the first inner edge and is provided with a second shaft mounting notch which forms a shaft mounting hole of the drive shaft together with the first shaft mounting notch; the second set of coils are disposed on the braking surface of the second static plate.

A system arrangement for the drive train of lifting mechanisms, such as crane lifting mechanisms, is disclosed. The system arrangement includes at least one drive motor (1, 1′), at least one cable drum (2, 2′) connected thereto, a reduction transmission (3) arranged between the drive motor (1, 1′) and the cable drum (2, 2′), an automatic overrun shutdown freewheel (6), and at least one safety brake (4, 4′). To optimize such a drive train, at least one active motor locking assembly (5, 5′) is utilized to hold the load when the drive motor (1, 1′) is decelerated electrically to a rotary speed of zero. The active motor locking assembly is utilized instead of at least one passive operating brake.

A system arrangement for the drive train of lifting mechanisms, such as crane lifting mechanisms, is disclosed. The system arrangement includes at least one drive motor (1, 1′), at least one cable drum (2, 2′) connected thereto, a reduction transmission (3) arranged between the drive motor (1, 1′) and the cable drum (2, 2′), an automatic overrun shutdown freewheel (6), and at least one safety brake (4, 4′). To optimize such a drive train, at least one active motor locking assembly (5, 5′) is utilized to hold the load when the drive motor (1, 1′) is decelerated electrically to a rotary speed of zero. The active motor locking assembly is utilized instead of at least one passive operating brake.

An overhead lift includes a lift strap, a motor, an electromagnetic brake, and a release assembly. The motor includes a rotatable shaft coupled to the lift strap. The electromagnetic brake is coupled to the rotatable shaft and has an engaged state and a disengaged state. The release assembly is engaged with the electromagnetic brake. The release assembly incudes a release lever engaged with the electromagnetic brake and a release strap. The release lever is moveable between a first position and a second position, wherein the release lever switches the electromagnetic brake to the disengaged state when in the second position. The release strap is coupled to the release lever. Tensioning of the release strap moves the release lever from the first position to the second position thereby switching the electromagnetic brake to the disengaged state.

A brake device and a winch having the same are provided. The brake device includes a brake sleeve, a torsion spring, a sealing member and a braking assembly. The torsion spring is fitted over the braking assembly, and the brake sleeve is fitted over the torsion spring. The braking assembly is configured to drive the torsion spring to move between an expanded position and a retracted position, so as to lock and release the brake sleeve. The sealing member is arranged between the brake sleeve and the braking assembly, so that a sealing cavity is defined between the brake sleeve and the braking assembly.

A brake device for a winch and a winch are provided. The winch includes a rope drum, and the brake device includes a brake sleeve, an elastic ring, a torsion spring and a braking assembly. The torsion spring is fitted over the braking assembly, and the brake sleeve is fitted over the torsion spring. The braking assembly is configured to drive the torsion spring to move between an extended position and a retracted position, so as to lock and release the brake sleeve. The elastic ring is fitted over the brake sleeve and configured to abut with an inner wall of the rope drum.

A brake device for a winch and a winch are provided. The winch includes a rope drum, and the brake device includes a brake sleeve, an elastic ring, a torsion spring and a braking assembly. The torsion spring is fitted over the braking assembly, and the brake sleeve is fitted over the torsion spring. The braking assembly is configured to drive the torsion spring to move between an extended position and a retracted position, so as to lock and release the brake sleeve. The elastic ring is fitted over the brake sleeve and configured to abut with an inner wall of the rope drum.

A winch brake device that is used for a work machine and generates a braking force on the basis of a brake manipulation, includes a pressing member that brings braking members into pressure contact with each other to generate the braking force, a first brake cylinder that applies a first pressing force for bringing the braking members into pressure contact with each other to the pressing member, and a second brake cylinder that applies a second pressing force different from the first pressing force to the pressing member. The first brake cylinder and the second brake cylinder are capable of applying the first pressing force or the second pressing force independently of each other.

A winch includes a rotary drum, a cable which can be wound on the drum in multiple layers, and a brake for braking the rotation of the drum, the brake being calibrated to permit the rotation of the drum beyond a variable torque which decreases as the length of the cable wound on the drum increases.

A winch includes a rotary drum, a cable which can be wound on the drum in multiple layers, and a brake for braking the rotation of the drum, the brake being calibrated to permit the rotation of the drum beyond a variable torque which decreases as the length of the cable wound on the drum increases.