Permanent magnetic synchronous motor for starting escalator or moving pavement
A permanent magnet synchronous and escalator technology, applied to synchronous motors with stationary armatures and rotating magnets, electric components, electrical components, etc., can solve the inconvenience of operation, space constraints of personnel conveyors, and lack of manual turning devices and other issues to achieve the effect of easy implementation and satisfactory installation and maintenance
Inactive Publication Date: 2004-02-25
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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Problems solved by technology
Although the driving device has the advantages of short axial dimension and compact structure, it has the following defects: Since the stator of the motor with this structure is also used as the magnetic circuit of the rotating magnetic poles, certain measures are required to prevent the stator / rotor from being opposite to each other under the action of electromagnetic force. In addition, due to the approximate proportional relationship between motor power and volume at a certain speed and electromagnetic load, increasing the power in this structure will inevitably increase the radial dimension, which is constrained by the space of the personnel conveyor; moreover, This structure does not have a manual turning device. When the driving device is used in an escalator, it will cause inconvenience to the operation when installing or removing steps.
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[0008] The present invention will be further described in detail through a specific embodiment below. Such as figure 1 As shown, the present invention is used for the permanent magnet synchronous motor of escalator or moving sidewalk, comprises the stator 1 that has cavity in it, and the stator core 9 that is embedded with winding is assembled on the stator 1; The yoke of cup-shaped outer rotor 2 It is located between the stator 1 and the stator core 9, and there is an appropriate air gap at the interval; the inner surface of the yoke of the outer rotor 2 is equipped with high-performance permanent magnet steel, and the end 7 of the outer surface of the yoke of the outer rotor 2 is used for the brake fixed on the stator 1 (not shown in the figure) friction effect; the outer rotor 2 is connected with the main shaft 8 through a key, and a bearing is installed between the main shaft 8 and the inner cavity of the stator 1, and the main shaft 8 is equipped with a sprocket 6, and th...
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The present invention relates to a PM synchronous motor used in automatic escalator or moving pavement. The motor includes stator and rotor, the stator is equipped with stator iron core with imbeddedwinding, and the yoke portion of the described rotor is equipped with PM steel, and has a certain radial gap between it and stator iron core. The rotor is fixedly connected with the main shaft, and the stator is connected with main shaft by means of bearing, and one side of the main shaft is connected with a chain wheel.
Description
technical field [0001] The invention relates to a permanent magnet synchronous motor, in particular to a low-speed, high-torque gearless permanent magnet synchronous motor used for escalators or moving sidewalks. Background technique [0002] The existing escalator driving device is usually composed of asynchronous motor, reducer, brake and other components, and the manufacturing and assembly workload is relatively large. However, the direct drive of the permanent magnet motor is used because the reducer is omitted. Compared with the current escalator driving device Not only the assembly workload is small, but also the noise is low and the efficiency is high, so it has received widespread attention. [0003] In the prior art, there are also people conveyors that use a disk-type permanent magnet synchronous motor with an axial magnetic field as a driving device. Although the driving device has the advantages of short axial dimension and compact structure, it has the followin...
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IPC IPC(8): H02K1/27H02K7/102H02K7/14H02K21/12
Inventor 方凯
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD