Double main unit driven escalator or walkway

A technology for escalators and sidewalks, which is applied in the energy efficiency of escalators and escalators, sustainable buildings, etc., can solve the problems of low efficiency and power factor of the main motor, insufficient effective utilization, and poor energy saving effect, so as to improve efficiency. and power factor, improve work efficiency and power factor, prolong service life
CN101298308BInactive Publication Date: 2011-06-08HITACHI ELEVATOR GUANGZHOU ESCALATOR
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HITACHI ELEVATOR GUANGZHOU ESCALATOR
Publication Date
2011-06-08
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an automatic escalator or a sidewalk that is driven by a double main machine, which includes a drive device, a first main machine and a second main machine that are connected in parallel, a control device and a load detection device, wherein, the load detection device is utilized to detect a load state signal of the escalator or the sidewalk and output the signal to the control device; the control device is utilized to judge the load state and control the drive unit to drive the first main machine to work independently or drive the first main machine and the second main machine to work at the same time. The automatic escalator or the sidewalk has the advantages that the escalator or the sidewalk is controlled by a double main machine independently, and the power ofthe main machines can be combined conveniently; the main machine can have different running states that can be adjusted according to the load state so that the two main machines can work at the powernearest to their rated load, so the working efficiency and the power factor of the main machine can be improved, the service life can be prolonged; meanwhile, the invention can save energy and the operation is safe and reliable.
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Description

Technical field

[0001] The invention relates to an escalator or a sidewalk, in particular to an escalator or a sidewalk driven by a dual main engine. Background technique

[0002] At present, escalators or sidewalks are mostly driven by dual hosts. The two main motors drive the sprocket on the left and right sides through a coupling or directly to realize the transportation of people or objects. The two main motors adopt a unified control method, that is, two The main motors run at the same time or stop at the same time. Such as figure 1 Shown is the working characteristic diagram of the asynchronous motor, the efficiency η and power factor of the motor There is a corresponding relationship with the output power P2 of the motor. When the motor is unloaded, the efficiency of the motor is 0, and the power factor is also very low, about 0.1 to 0.2. As the load increases, the efficiency and power factor of the motor increase rapidly. But when the load exceeds the rated load of the ...

Claims

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