Drag for service elevator

Abstract

The present invention relates to elevator drag, is especially one kind of drag for service elevator, and belongs to the field of elevator driver. With the technological progress, gear worm transmission is replaced by permanent magnetic no-gear drag and high efficiency and great torque reducer box. The drag for service elevator of the present invention has permanent magnetic synchro motor and bevel gear transmission box with high transmission efficiency, and features the output shaft of the reducer box with unloading flange and drag wheel supported with bearing and to transmit torque while eliminating gear meshing deformation caused by radial force. The drag for service elevator of the present invention has the features of compact structure, high transmission efficiency, low cost and excellent energy saving effect.

Description

technical field

[0001] The invention relates to an elevator traction machine, in particular to a freight elevator traction machine, which belongs to an elevator lifting drive device. Background technique

[0002] At present, the traction machine, the driving equipment for freight elevators commonly used at home and abroad, is generally a reduction box with worm gear transmission, and the power motor used is a three-phase asynchronous motor. The disadvantages of this kind of traction machine are: complex structure, many parts involved, large volume, heavy weight, complicated processing, high cost, low mechanical transmission efficiency, and high requirements for the power capacity of the motor. The biggest disadvantage is the worm gear. The frictional resistance of the worm is large, the transmission efficiency is low, and the power factor of the asynchronous motor generated by the power is also low. The low efficiency also causes a great waste of power resources. Therefore,...

Examples

Embodiment Construction

[0015] Symbols represent among the figure: 1, unloading flange, 2, shaft end cap 2,3, output shaft, 4, bearing, 5, traction sheave, 6, bearing cover, 7, gear reduction box, 8, electric motor.

[0016] The technical contents and implementation methods of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] Accompanying drawing 2 is a preferred embodiment of the present invention, and the elevator traction machine of the present invention comprises motor 8 and reduction box 7, and wherein: reduction box 7 is the helical gear transmission reduction box with high transmission efficiency, and output shaft 3 wherein To transmit torque, an unloading flange 1 is installed on the casing at the output end of the output shaft 3, that is, the unloading flange 1 is connected to the gear reduction box 7; the unloading flange 1 and the traction wheel 5 are supported by the bearing 4, That is to say, there is a bearing 4 between the tra...

technical field

[0001] The invention relates to an elevator traction machine, in particular to a freight elevator traction machine, which belongs to an elevator lifting drive device. Background technique

[0002] At present, the traction machine, the driving equipment for freight elevators commonly used at home and abroad, is generally a reduction box with worm gear transmission, and the power motor used is a three-phase asynchronous motor. The disadvantages of this kind of traction machine are: complex structure, many parts involved, large volume, heavy weight, complicated processing, high cost, low mechanical transmission efficiency, and high requirements for the power capacity of the motor. The biggest disadvantage is the worm gear. The frictional resistance of the worm is large, the transmission efficiency is low, and the power factor of the asynchronous motor generated by the power is also low. The low efficiency also causes a great waste of power resources. Therefore,...

Examples

Embodiment Construction

[0015] Symbols represent among the figure: 1, unloading flange, 2, shaft end cap 2,3, output shaft, 4, bearing, 5, traction sheave, 6, bearing cover, 7, gear reduction box, 8, electric motor.

[0016] The technical contents and implementation methods of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] Accompanying drawing 2 is a preferred embodiment of the present invention, and the elevator traction machine of the present invention comprises motor 8 and reduction box 7, and wherein: reduction box 7 is the helical gear transmission reduction box with high transmission efficiency, and output shaft 3 wherein To transmit torque, an unloading flange 1 is installed on the casing at the output end of the output shaft 3, that is, the unloading flange 1 is connected to the gear reduction box 7; the unloading flange 1 and the traction wheel 5 are supported by the bearing 4, That is to say, there is a bearing 4 between the tra...

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