Construction hoist transmission mechanism double brake power unit

Abstract

The invention discloses a double-brake power unit of a drive mechanism of a building hoist. The double-brake power unit comprises a motor special for the building hoist. The motor drives a speed reducer of various types. A linkage disc is arranged between the motor and the speed reducer. A set of spring-weighted electromagnetic brakes with the safety protective function are additionally arranged on one side of a coupler installed in the linkage disc. The output power of the motor is transmitted to the speed reducer through the coupler and the spring-weighted electromagnetic brakes with the safety protective function, so that the power unit formed by combining a driver, the two independent brakes and the speed reducer is formed, namely the double-brake power unit is formed. The double-brake power unit not only achieves safety of the building hoist, but also improves operating stability and comfort. By means of the innovative structural design, the universal aim of safety of an energy-saving and efficient dual-drive mechanism is effectively achieved, safety of a single-drive transmission mechanism of the building hoist is achieved at the same time, and the whole double-brake power unit is high in universality, wide in application range, safe, reliable and low in cost.

Description

technical field [0001] The invention relates to a construction elevator transmission mechanism, in particular to a construction elevator transmission mechanism double braking power unit. Background technique [0002] At present, the construction elevator transmission mechanism generally adopts the single brake power unit mode. This single braking power unit method is relatively simple and convenient in structure, but there are many disadvantages: [0003] ① poor safety and reliability. The single-braking power unit has only one set of electromagnetic brakes. When the brakes fail, the entire power unit cannot work normally: if there is a release failure, the output power of the power unit will be blocked, which will increase the mechanical load of the running resistance and cause the reduction of transmission efficiency. Running with brakes for a long time will not only increase the additional wear of these parts and aggravate the failure, but also cause difficulty in start...

AI Technical Summary

Problems solved by technology

[0003] ① poor safety and reliability

The single-brake power unit has only one set of electromagnetic brakes. When the brake fails, the entire power unit cannot work normally: if there is a release failure, the output power of the power unit will be blocked, which will increase the mechanical load and reduce the transmission efficiency.

Running with brakes for a long time will not only increase the additional wear of these parts and aggravate the failure, but also cause difficulty in starting, damage to electrical appliances, and even burn out the brake coil and even the motor coil

The transmission mechanism cannot work normally; if there is a brake failure, it will not be able to brake or position accurately in time according to the control requirements. More cause impact deformation and damage, and may lead to safety accidents

[0004] ②Traditional single-brake power unit mode without fault detection and control protection

Due to the traditional single-brake power unit electromagnetic brake with gap automatic tracking compensation device, it is impossible to configure fault detection and control protection

[0005] ③ Poor running comfort

The start-stop impact of the construction elevator is the most direct cause of the wear and tear of the transmission parts of the construction elevator, aggravated failure, and frequent failures, and has a greater impact on the comfort of the occupants.

The single braking power unit lacks flexible and effective technical measures to solve the comfort due to its single braking

[0006] ④ With the development of construction elevators in the direction of energy saving, high efficiency and cost reduction, a large number of two-drive transmission mechanisms composed of two sets of power units are used in the market. If there is a fault, the entire transmission mechanism cannot operate safely under the condition of a set of power units. Even if the output power can meet the load requirements at light loads, the single braking of a single set of power units cannot meet the safety requirements;

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