Multiple-disc combined type great-moment brake

Abstract

The invention discloses a multiple-disc combined type great-torque brake which mainly comprises a plurality of braking discs arranged in parallel. Both sides of each braking disc are provided with brake sheets, the brake sheets are supported by an elastic pressing plate, and the elastic pressing plate is in surface contact with a wedge-shaped thrust block. The multiple-disc combination structure reduces the moment of a single braking disc and realizes braking with great braking moment; meanwhile, the multiple-sheet structure increases the smoothness and the safety of the system and obviously reduces the size and the overall weight of the mechanical structure. The small-inclination surface between the wedge-shaped thrust block and the elastic pressing plate which are mutually matched realizes self locking on one hand and realizes the steering and the amplification of thrust on the other hand, and thus, the mechanical boosting design of a small oil cylinder with great thrust is realized. The elastic deformation of the elastic pressing plate is maintained during the operating period of the brake, so that the elastic deformation stored by bending the elastic pressing plate can keep the mechanical braking force of the brake unchanged under the condition that the brake is power off suddenly. Under the condition of sudden power off, a second energy accumulator is put into operation simultaneously, so that the persistence of the braking force of the brake is ensured. Power-off automatic protection, i.e. safe braking, is realized.

Description

technical field [0001] The invention relates to the braking field of heavy-duty hoisting machinery, in particular to a disc brake, which is especially suitable for the braking of bridge-type hoisting machinery such as railway freight stations and ports. Background technique [0002] At present, the "three-in-one" drive mode in which the motor, hub brake and reducer are combined into one is mostly used for port bridge cranes. Among them, the hub brake is used as the working brake, and the motor with strong magnet or the reducer with self-locking function is used to realize safe braking. For large bridge cranes, the huge reducer will make the lifting equipment bulky and heavy, and the transmission is complicated. , Low transmission efficiency and inconvenient maintenance. Hub type brake and reducer work safety with self-locking function are also not very reliable. In order to change the "three-in-one" drive mode in which the motor, hub brake and reducer are combined, the new...

AI Technical Summary

Problems solved by technology

Among them, the hub brake is used as the working brake, and the motor with strong magnet or the reducer with self-locking function is used to realize safe braking. For large bridge cranes, the huge reducer will make the lifting equipment bulky and heavy, and the transmission is complicated. , low transmission efficiency and inconvenient maintenance

The working safety of wheel hub brakes and reducers with self-locking function is not very reliable

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