CN2908449Y

CN2908449Y - Permanent synchronous tractor

Info

Publication number: CN2908449Y
Application number: CN 200620000039
Authority: CN
Inventors: 石正铎; 路俊秀; 刘金忠; 蔺乐; 刘贵民; 白晓东; 陈新喜; 李国军; 林万里
Original assignee: XUCHANG BOMA TRACTION MACHINE CO Ltd
Current assignee: Xuchang BOMA Traction Machine Co., Ltd.; XJ Elevator Co Ltd
Priority date: 2006-01-04
Filing date: 2006-01-04
Publication date: 2007-06-06
Anticipated expiration: 2016-01-04

Abstract

The device is a synchronous dray machine with the permanent magnet; the machine seat includes a stator support and a bearing support integrated into one body; the through key and the pressure plate are fixed on the stator support; the permanent magnet with the radial magnet is pasted on the inner wall of the outer circle of the rotor in the circular direction with the equivalent radius; the rotor is installed on the bearing support of the axis of the stator support through the two deep-groove ball bearings with two sealed sides; the deep-groove ball bearings are arranged parallel with a separating ring between; the outer ring of the deep-groove ball bearings with two sealed sides is installed at the rotor end; the central shaft is connected with the back rotary encoder through the central hole of the stator; the bearing installed in the rear bearing chamber supports the shaft; the dray wheel is installed on the table shoulder of the rotor end. The utility model is a non-gear dray machine with the permanent magnet, which is high in intensity, low in noise, smooth in operation, maintenance-free, and reliable in use; the structure is compact; the size is small; the processing technology is good; the maintenance and assembly is convenient; thus the utility model can meet the requirements of saving energy, protecting environment and being highly reliable in the construction industry.

Description

A kind of permanent magnetic synchronous traction machine

Technical field

This novel towing machine that uses on a kind of elevator that relates to, particularly a kind of gearless permanent-magnet synchronous traction machine.

Background technology

Development along with the modern architecture industry, design and use to elevator require more and more higher, traditional towing machine can not satisfy people's operating needs, thereby gearless permanent-magnet synchronous traction machine, little with its volume, efficient is high, and the improvement aspect drive abilities such as vibration, noise, will progressively replace traditional towing machine, for example the patent No. is 02109831.The X name is called " gearless permanent-magnet towing machine ", although this mechanism has overcome the shortcoming of towing machine in many prior arts, but still has following shortcoming:

1, main shaft plays carrying moment of flexure and drive and revolves and compile the rotation double action, and the flexural deformation meeting of main shaft drives rotor and the stator core axis produces angle, increases the degree of irregularity of air gap between rotor permanent magnet and the stator core.Rear bearings plays auxiliary carrying effect in addition, and for satisfying the design life requirement, so select dimensions bigger, cost increases, and has installed the bearing carrier ring complex structure of carrying effect additional, and fabrication properties is bad;

2, when system weight is delivered on the rotor by traction sheave, because rotor is a cantilever design, the distortion of rotor itself can increase the degree of irregularity of air gap between rotor permanent magnet and the stator core, increases and rotates torsional oscillation, thereby reduced the elevator ride comfort;

3, support aspect, the outside race that plays main carrying effect is packed in sole plate supports and puts, and the support sleeve internal diameter is increased, and its version has reduced the support load-bearing rigidity;

4, the braking driving surface of rotor exposes, and does not have suitable safeguard procedures, is vulnerable to the influence of extraneous adverse environment;

5, the effect purpose of rotor design support sleeve is that the force-bearing situation that improves complete machine structure increases the load-carrying capacity of main shaft simultaneously, but can not fundamentally eliminate the suffered moment of flexure of main shaft, and makes rotor design complex structure fabrication properties bad.

Summary of the invention

The objective of the invention is to: design a kind of efficient, reliable, low noise, non-maintaining permanent magnetic synchronous traction machine, to satisfy the requirement of growing building industry.

The following structure of this novel employing realizes above-mentioned purpose: towing machine comprises: rotor, stator, rotary encoder, support, brake equipment, support comprises stator support and bearings, and be structure as a whole, by key and pressing plate fixed stator on stator support, rotor cylindrical inwall circumferencial direction paste and with radius such as pressing plate and screw retention towards the magnetic permanent magnet, rotor is installed on the bearings of stator support by two bilateral seal deep groove ball bearings that separate with ring in the middle of installing side by side, bilateral seal deep groove ball bearing outer ring is installed in rotor tip, and it is compressed with roller bearing end cap, the centre hole that passes bearings with the integrally welded center shaft of this roller bearing end cap is connected with the rear portion rotary encoder, and this axle of bearings by being installed on the rear bearings chamber, traction sheave is installed on the rotor tip shoulder.

This novel employing said structure, overcome the shortcoming of prior art, this structure design makes elevator device weight pass through traction sheave-rotor-bearing supporting role on the bearings of support stator support, so rising and carrying the axle of doing usefulness is support itself, and the support strength and stiffness are good, thereby improved the safety of load bearing system greatly.Because elevator device weight is by the centre of two bearings, axle is not subjected to moment of flexure, and shaft strength reduces, and the life-span increases.Rotor does not adopt cantilever design, and adopts more simple ladder void column body structure, the distortion that air gap changes between rotor permanent magnet and the stator core that can not exert an influence after the carrying, and its fabrication properties simple in structure is good.Adopt the double containment ball-bearing casing, the running precision height operates steadily, noise is low, and need not refuel, and is non-maintaining, do not have fuel loading system, and support and roller bearing end cap are simple in structure.It is totally-enclosed that drg is contained in the brake wheel circumference of complete machine midway location and rotor one, and the rotor excircle that plays brake action is protected by the support actv., makes its influence that is not subjected to extraneous unfavorable factor, and is reliable, and the outward appearance one integrated mass, elegant in appearance.Bearing chamber and roller bearing end cap are installed in the stator support of towing machine back, can be selected the version of bearing chamber and roller bearing end cap, increased the optional space of rotary encoder according to different types of rotary encoder.

This novel is a kind of high strength, low noise, operate steadily, non-maintaining, service-strong permanent magnetic synchronous traction machine, its compact conformation, volume is little, and fabrication properties is good, keep in repair easy to assemblyly, satisfy building industry its energy-saving and environmental protection, highly reliable, the minimum requirement that takes up room.

This novel small room and machine-roomless lift of being specially adapted to.

Description of drawings:

Fig. 1 is a front view of the present invention.

Fig. 2 is the concrete structure scheme drawing.

Fig. 3 is the prior art scheme drawing.

Fig. 4 is the lateral plan of Fig. 3.

The specific embodiment

As shown, the structure of this towing machine comprises support, stator, rotor, drg and turning gear (not shown), wherein support 10 and stator support 102, bearings 104 casts solid, by key 2 and pressing plate 1 fixed stator 5 on stator support 102, rotor 3 cylindrical inwalls 101 circumferencial directions paste and with radius such as pressing plate and screw retention towards magnetic permanent magnet 4, rotor draws up installation by two and the centre is installed on the bearings 104 of stator support 102 with the ring 12 bilateral seal deep groove ball bearings 14 that separate the 115mm distance, outside race is installed in rotor 3 ends, and it is compressed with roller bearing end cap 13, the centre hole that passes bearings 104 with the integrally welded center shaft 103 of this roller bearing end cap 13 is connected with rear portion rotary encoder 9, and bearing 7 these axles of support by being installed on rear bearings chamber 6, traction sheave 15 is installed on the rotor 3 end shoulders 105.Bearing chamber and roller bearing end cap can be installed in the stator support of support back.Brake control lever 8 is fixed on the support 10 by bearing pin 11, and the friction shoe on it is by acting on the excircle 106 of rotor 3 in the hole of opening on support two Side.

This later-model specific embodiment is: towing machine rated load 1000Kg, specified linear speed 2.5m/s, hang 2: 1.Its main passive two bearings 3mm that spaces out in this example, the operation noise is little, and the complete machine temperature rise is low, the bearing capacity height.This is novel numerous embodiments, narration no longer one by one.

Claims

1. permanent magnetic synchronous traction machine, comprise: rotor, stator, rotary encoder, support, brake equipment, it is characterized in that: support comprises stator support and bearings, and be structure as a whole, by key and pressing plate fixed stator on stator support, rotor cylindrical inwall circumferencial direction paste and with radius such as pressing plate and screw retention towards the magnetic permanent magnet, rotor is installed on the bearings of stator support by two bilateral seal deep groove ball bearings that separate with ring in the middle of installing side by side, bilateral seal deep groove ball bearing outer ring is installed in rotor tip, and it is compressed with roller bearing end cap, the centre hole that passes bearings with the integrally welded center shaft of this roller bearing end cap connects the rear portion rotary encoder mutually, and this axle of bearings by being installed on the rear bearings chamber, traction sheave is installed on the rotor tip shoulder, drg is contained in the complete machine midway location, and the support both sides have the hole that the friction shoe on the drg is passed.