Non-return type hoister descending continuous speed regulation brake

Abstract

The invention belongs to a mechanical brake system of hoisting equipment, particularly relates to a downstream stepless speed regulating brake of backstop type hoists, comprising a single-directional self-locking type worm and gear speed reducer and a frequency-conversion brake motor (1). The single-directional self-locking type worm and gear speed reducer consists of a body (2), an output coupling (3), front and back end covers (5) and (17) of an output shaft, and a worm end cover (26). The downstream stepless speed regulating brake of the backstop type hoists is characterized in that: a worm (24) is arranged in the axially middle of the upper end in the body (2); a groove is arranged at the center of the left end of the worm (24) and connected with the output shaft of the frequency-conversion brake motor (1); and a keyway (24-1) is arranged in the groove and fixed by a key (1-1) arranged on the output shaft of the motor. With simple operation and accurate control, the downstream stepless speed regulating brake of the backstop type hoists can greatly save electric energy while realizing intelligent control such as failure alarming and automatic stop and the like, reducing heat of equipment, improving operating stability of the equipment and prolonging the service life of the equipment.

Description

technical field [0001] The invention belongs to the mechanical braking system of hoisting and hoisting equipment, in particular to a backstop type stepless speed-regulating brake for the downward movement of a hoist. Background technique [0002] The traditional mechanical braking system of the hoisting motor used in ports and mines directly relies on friction to offset the pulling force of the motor and the gravity of the object when the heavy object is descending. The mechanical friction braking system needs to generate long-term and huge friction to control the downward speed of the lifting motor. Even so, it is difficult to achieve a relatively stable speed control, and the long-term and huge friction will increase the heat of the system. The mechanical wear is serious and the damage is frequent, causing losses such as production stoppage to the enterprise. More advanced energy-consuming brakes, magnetic powder brakes, frequency conversion speed regulation and other con...

AI Technical Summary

Problems solved by technology

[0002]The traditional harbor and mining hoist motor mechanical braking system, when the heavy object goes down, because it directly relies on friction to offset the pulling force of the motor and the gravity of the object, When the cargo is heavy or needs variable speed, constant speed, and low speed down, the traditional mechanical friction braking system needs to generate a long time and huge friction to control the down speed of the hoisting motor. Even so, it is difficult to achieve a more stable speed control , and long-term, huge friction will increase the heat of the system, cause serious mechanical wear, frequent damage, and cause losses such as production stoppage to the enterprise

More advanced energy-consuming brakes, magnetic powder brakes, frequency conversion speed regulation and other controls, because the electric energy directly passes through the load or the motor to generate a braking magnetic field, frequent use for a long time will not only cause overheating of the motor or equipment, increase power consumption, and shorten life. At the same time, there are safety hazards such as momentary power failure and brake failure.

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