An elevator car (2, 2′), includes a first safety brake (8, 8′), including a first electronic safety actuator (512, 612), the first safety brake (8, 8′) positioned on a first side of the elevator car (2, 2′) at a first height (20, 20′); and a second safety brake (10, 10′), including a second electronic safety actuator (512, 612), the second safety brake (10, 10′) positioned on a second side of the elevator car (2, 2′) at a second height (22, 22′); the first height is different to the second height.

A hoist brake system is disclosed. The brake system incorporates an electro-mechanical device that acts as a fail-safe stopping mechanism for a hoist and has a default engaged. This allows the brake system to quickly and safely stop a device when power is lost, an emergency signal is provided or any other fault condition and be completely self-contained within the hoist itself.

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.

An elevator car (2, 2′), includes a first safety brake (8, 8′), including a first electronic safety actuator (512, 612), the first safety brake (8, 8′) positioned on a first side of the elevator car (2, 2′) at a first height (20, 20′); and a second safety brake (10, 10′), including a second electronic safety actuator (512, 612), the second safety brake (10, 10′) positioned on a second side of the elevator car (2, 2′) at a second height (22, 22′); the first height is different to the second height.

An elevator car (2, 2′), includes a first safety brake (8, 8′), including a first electronic safety actuator (512, 612), the first safety brake (8, 8′) positioned on a first side of the elevator car (2, 2′) at a first height (20, 20′); and a second safety brake (10, 10′), including a second electronic safety actuator (512, 612), the second safety brake (10, 10′) positioned on a second side of the elevator car (2, 2′) at a second height (22, 22′); the first height is different to the second height.

An interlock between a drawworks and a blowout preventer includes a sensor for sensing a position of the blowout preventer. An interlock signal is generated by the sensor, and the interlock signal is reflective of the position of the blowout preventer. A lock operably connected to the drawworks receives the interlock signal and disables operation of the drawworks if the interlock signal meets a predetermined criterion. A method for operating a drill rig includes operating a drawworks to raise and lower a drill string and operating a blowout preventer. The method further includes sensing a position of the blowout preventer and generating an interlock signal that reflects the position of the blowout preventer. The method further includes comparing the interlock signal to a predetermined criterion and disabling the drawworks if the interlock signal meets the predetermined criterion.

An interlock between a drawworks and a blowout preventer includes a sensor for sensing a position of the blowout preventer. An interlock signal is generated by the sensor, and the interlock signal is reflective of the position of the blowout preventer. A lock operably connected to the drawworks receives the interlock signal and disables operation of the drawworks if the interlock signal meets a predetermined criterion. A method for operating a drill rig includes operating a drawworks to raise and lower a drill string and operating a blowout preventer. The method further includes sensing a position of the blowout preventer and generating an interlock signal that reflects the position of the blowout preventer. The method further includes comparing the interlock signal to a predetermined criterion and disabling the drawworks if the interlock signal meets the predetermined criterion.

An electromagnetic brake with a housing body and a coil unit, wherein the coil unit has a positive connection to the housing body, wherein the coil unit is positively connected to the housing body by means of a snap-fit connection, wherein at least one snap hook of the coil unit is supported on a web of the housing body.