Power-off braking mechanism for main brake of escalator

Abstract

The invention relates to a power-off braking mechanism for a main brake of an escalator. The mechanism comprises a braking wheel (12), a braking belt (11), a first braking belt traction part and a second braking belt traction part, wherein the first braking belt traction part is used for enabling the braking belt (11) to be apart from the braking wheel (12), the second braking belt traction part is used for enabling the braking belt (11) to abut against the braking wheel (12) tightly, a braking acting surface of the braking belt (11) and the peripheral surface of the braking wheel (12) are in clearance fit, and the braking wheel (12) and a rotating shaft of a main electrical motor of the escalator are in circumferential limiting fit. The mechanism is characterized in that the braking wheel (12) and the braking belt (11) are both installed inside an electrical motor base of the main electrical motor of the escalator. The power-off braking mechanism for the main brake of the escalator is simple in structure, low in manufacture cost and maintenance cost and convenient to install and maintain.

Description

technical field [0001] The invention relates to the technical field of escalator braking, in particular to a power-off braking mechanism used for the main brake of an escalator. Background technique [0002] In the field of escalator braking technology, Article 12.4 of the national standard GB 16899-1997 "Safety Code for Manufacture and Installation of Escalators and Moving Walks" stipulates that escalators should be equipped with a braking system. After the braking system is disconnected from the braking circuit, the brake should brake immediately. According to the national standard documents mentioned above, we know that in order to ensure the safety of passengers, the main brake used in the escalator must be equipped with a power-off braking mechanism. In the prior art, there are mainly two types of power-off braking mechanisms used for the main brake of an escalator: a belt-type power-off braking mechanism and a brake-type power-off braking mechanism. [0003] The band...

AI Technical Summary

Problems solved by technology

[0004] This belt-type power-off braking mechanism of the main brake outside the motor base of the non-shaft extension end 003 of the motor of the escalator has the following shortcomings in actual use: in order to control the weight and installation strength of the mechanism, the The supporting plate 004 and the fixing devices and connecting devices on the supporting plate involved in the braking mechanism described above are mostly sheet metal parts. At the same time, because it is installed on the non-shaft extension end 003 of the motor, there is also a flywheel 005 required by the motor behind it. When replacing the brake band 011, the flywheel 005 must be removed, so that the replacement of the brake band 011 The maintenance process is increased, and maintenance is inconvenient. In addition, there are many parts of the brake belt 011 and the brake wheel that are directly exposed outside,

Images