Planet gear speed change synchronous belt transmission symmetric driving gear rack elevator

Abstract

The invention discloses a planet gear speed change synchronous belt transmission symmetric driving gear rack elevator. A power transmission system includes a planet gear speed reducing system and a synchronous belt transmission system; a driving system is a gear rack symmetric driving system; an electric traction system includes a permanent magnetic direct-current motor system or a permanent magnetic alternating-current synchronous motor system; power sent by the electric traction system is decelerated through the planet gear speed reducing system; a double-surface gear synchronous belt power conversion transmission system converts the power in the rotating direction sent by the electric traction system to two types of power with the same speed and opposite directions; a synchronous belt power shunting system transfers the power to a symmetric driving system to drive a car to operate; a double-backup power losing brake is arranged on a brake wheel coaxial with a motor shaft; a power losing start connection unit circuit provided with electric interlocking and mechanical interlocking is arranged in an electric control system; and the elevator has the beneficial effects of self weight reduction, transport capacity improvement and energy saving.

Description

technical field [0001] The invention relates to the field of elevators, in particular to a rack and pinion elevator. Background technique [0002] The rack-and-pinion elevator has its advantages, but the problem that the transmission system is installed on the elevator car and increases the weight of the elevator car must be improved. Some existing solutions adopt single-sided drive, which can reduce some of the weight, but it is only suitable for light loads or It is a construction ladder or an indoor debris ladder. From the principle of safe and stable operation, most freight elevators and passenger elevators should adopt a balanced drive method, but this will easily increase the weight of the transmission system; in the existing scheme ( Including a part of the asymmetric drive scheme) transmission system, some include multi-stage transmission, and some have a crank (ie manual) device, including a handwheel or handle, a crank gear, a crank clutch, and a motor. The weight...

AI Technical Summary

Problems solved by technology

[0002] The rack-and-pinion elevator has its advantages, but the problem that the transmission system is installed on the elevator car and increases the weight of the elevator car must be improved. Some existing solutions adopt single-sided drive, which can reduce some of the weight, but it is only suitable for light loads or It is a construction ladder or an indoor debris ladder. From the principle of safe and stable operation, most freight elevators and passenger elevators should adopt a balanced drive method, but this will easily increase the weight of the transmission system; in the existing scheme ( Including a part of the asymmetric drive scheme) transmission system, some include multi-stage transmission, and some have a crank (ie manual) device, including a handwheel or handle, a crank gear, a crank clutch, and a motor. The weight of the entire power system is relatively large, which increases the load on the elevator car, increases energy consumption, and reduces the effective capacity of the elevator car; in actual use, some elevators, especially those with relatively large loads, do require a large transmission ratio In order to obtain sufficient driving torque, therefore, it is necessary to improve the weight of the elevator car while adopting a balanced drive and achieving a large transmission ratio, so as to increase the effective capacity and save energy.

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