摘要:
Ein handgeführtes Arbeitsgerät mit einem Werkzeug besitzt eine Bremseinrichtung (10) für das Werkzeug, die ein Bremsband (13) umfasst, das eine Bremstrommel (12) umschlingt. Das Bremsband (13) und die Bremstrommel (12) bilden Reibpartner, die beim Bremsen zusammenwirken. Um eine sehr gute Bremsleistung zu erzielen, ist vorgesehen, dass ein erster Reibpartner ein austenitischer Stahl, ein Duplexstahl, Superduplexstahl, eine Nickelbasislegierung oder eine Kobaltbasislegierung ist, und dass der erste Reibpartner einen Grundkörper (20) und eine Randschicht (21) besitzt, wobei die Härte der Randschicht (21) etwa 150% bis etwa 600% der Härte des Grundkörpers (20) beträgt und wobei der Carbidanteil in der Randschicht (21) weniger als etwa 0,5 Gew.-% beträgt. Zur Herstellung einer Bremseinrichtung (10) eines handgeführten Arbeitsgeräts ist vorgesehen, in eine Randschicht (21) des ersten Reibpartners Kohlenstoff und/oder Stickstoff bei einer Temperatur von weniger als 500°C einzudiffundieren.
摘要:
An electromagnetic brake system and brake for controlling motion between a first machine body (32) and a second machine body (34) is provided. The electromagnetic brake system and brake include an interior core member (36), the interior core member coupling with the first body (32). The electromagnetic brake includes an outer exterior member (38), the outer exterior member enclosing the interior core member, the outer exterior member coupling with the second body. The electromagnetic brake includes a resilient spring brake lock member (40) having a brake torque stiffness, the resilient spring brake lock member (40) between the interior core member (36) and the outer exterior member (38), the resilient spring brake lock member (40) engaging the interior core member (36) wherein the resilient spring brake lock member inhibits rotation between the outer exterior member and the interior core member, and an electromagnetic field applied by an electromagnetic unlocking member disengages the resilient spring brake lock member from engaging the interior core member and provides for rotation between the outer exterior member and the interior core member.
摘要:
The invention essentially relates to a cinematic chain for an electric traction vehicle, the traction of the vehicle being provided by at least one rotating electric machine (3) acting on at least one wheel (2) of the vehicle through reduction means (5), said cinematic chain comprising a parking brake (6), characterised in that the parking brake acts between the rotor (9) and the stator of the electric machine.
摘要:
A system that includes a magnetically actuated rotary motion control device comprising a first housing member (183) defining a cavity (184) and including a movable circular band (187). A second movable member (181) is located within the cavity (184) and is movable relative to the housing (183). A magnetic field generator causes the movable circular band to press against the movable member to develop a friction force.
摘要:
The invention relates to a friction brake (10) for a motor vehicle. The friction brake (10) comprises, for example, a disc brake (12), which can be actuated by means of an actuating device provided, for example, in the form of a ball-and-screw spindle drive (22). The invention provides that the friction brake (10) is to be configured with a band brake (34) whose band (36) is placed on the periphery of a nut (26) of the ball-and-screw spindle (22). When the brake band (36) is placed under tensile stress in order to actuate the band brake (34), the brake band (36) turns the nut (26) of the ball-and-screw spindle drive (22) in a brake application direction thereby actuating the disc brake (12). The invention is advantageous in that the friction brake (10) has a high degree of braking assistance, therefore requiring a low level of actuation energy. The friction brake is thus suited for being configured as an electromechanical friction brake (10) with an electric motor (56) for the actuation thereof.
摘要:
A system that includes a magnetically actuated rotary motion control device comprising a first housing member (183) defining a cavity (184) and including a movable circular band (187). A second movable member (181) is located within the cavity (184) and is movable relative to the housing (183). A magnetic field generator causes the movable circular band to press against the movable member to develop a friction force.
摘要:
A device (10) allows forward (clockwise) rotation of a shaft (12) but prevents reverse rotation unless disengaged. A loop (20) is attached at one end to a slide shoe (16), passes round a drum (14) on the shaft (12), around a pin (24) and a pin (26), to an arm (28). The arm (28) can move clockwise to slacken the loop (20) to disengage the device (10) and allow rotation of the shaft (12) in either sense. A mechanism for controlling the arm (12) and for self-tightening the loop (20) are described.
摘要:
A band brake assembly comprises a barrel (10), a band (12) wrapping around the periphery of the barrel and carrying a friction material (14). Means (28) serve to anchor one end of the band with a limited force of which the value can be preset and second means (26) anchor the band at the other end to which an actuator (44) is connected for applying braking pressure to the band.