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Port gantry crane low-noise lifting motor

An electric motor and gantry technology, applied in the field of electric motors, can solve problems such as high motor noise, reduce electromagnetic vibration and electromagnetic noise, meet the requirements of low noise and environmental protection, and reduce the effect of amplitude

Active Publication Date: 2011-02-02
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problem of high noise of the lifting motor of the existing port machine gantry crane, and provides a low-noise lifting motor of the port machine gantry crane

Method used

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  • Port gantry crane low-noise lifting motor
  • Port gantry crane low-noise lifting motor

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Embodiment Construction

[0030] The low-noise hoisting motor of the port machine gantry crane includes a machine base 7 and a stator core 11; the stator core 11 is formed by laminating stator punching sheets, and a stator coil 15 is arranged inside the stator core 11, and the two ends of the machine base 7 are respectively fixed with front, Rear end cover 16, 6, front and rear end cover are supported with rotating shaft 1 through bearing, and rotor iron core 29 is arranged on rotating shaft 1, and rotor iron core 29 is formed by lamination of rotor punching sheet, and guide bar 28 is housed in the groove of rotor iron core 29, The two ends are welded with the end ring 27 into one squirrel cage; the number of punching slots in the stator is 54, and the number of punching slots in the rotor is 66; the stator coil uses formed windings, which are wound with a pitch of 7 and a winding short distance ratio β of 7 / 9.

[0031] Furthermore, the electromagnetic design reduces the air gap magnetic density to belo...

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Abstract

The invention relates to a motor, in particular to a port gantry crane low-noise lifting motor which solves the problem of great noise of the traditional port gantry crane low-noise lifting motor. The port gantry crane low-noise lifting motor comprises a base and a stator core, wherein the stator core is formed by laminating stator sheets, and a stator coil is arranged in the stator core; a frontend cover and a back end cover are respectively fixed at the two ends of the base, and a rotating shaft is supported on the front end cover and the back end cover through a bearing; a rotor core is arranged on the rotating shaft, the rotor core is formed by laminating rotor sheets, a conducting bar passes through rotor core slots, and both ends of the conducting bar and an end ring are welded into an integral mouse cage; the number of stator core slots is 54, and the number of rotor core slots is 66; and the stator coil is a preformed winding and is wound according to pitch 7 and winding short pitch ratio beta 7 / 9. Furthermore, the air-gap magnetic density in electromagnetic design is reduced to be lower than 0.9T. The motor meets the requirements of low noise and environmental protectionof port environment, and various performance indexes achieve the level of similar imported products.

Description

technical field [0001] The invention relates to a motor, in particular to a low-noise lifting motor for a port machine gantry crane. Background technique [0002] The tire-type container gantry crane (abbreviation: gantry crane) is a special equipment for yard operations behind the container terminal, and the lifting motor that is matched with it usually adopts a frequency conversion speed regulation asynchronous motor. The gantry crane requires the hoisting motor to have a high overload capacity. During the design, the magnetic load of the hoisting motor is usually increased and the leakage reactance is reduced to meet the requirements of the high overload capacity of the gantry crane. Therefore, it is easy to cause high-frequency electromagnetic noise of the motor. The existing gantry crane hoisting motor adopts the design method of ordinary variable frequency speed regulation asynchronous motor for electromagnetic calculation and mechanical structure design. After the pro...

Claims

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Application Information

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IPC IPC(8): H02K3/04H02K17/14
Inventor 李广李彩霞钟幼康孙涛连鑫李卯生
Owner CRRC YONGJI ELECTRIC CO LTD
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