CN1326312C

CN1326312C - Gearless permanent-magnet synchronous traction machine

Info

Publication number: CN1326312C
Application number: CNB02111952XA
Authority: CN
Inventors: 朱思中; 甘靖戈; 方凯
Original assignee: Shanghai Mitsubishi Elevator Co Ltd
Current assignee: Shanghai Mitsubishi Elevator Co Ltd
Priority date: 2002-06-04
Filing date: 2002-06-04
Publication date: 2007-07-11
Anticipated expiration: 2022-06-04
Also published as: CN1464623A

Abstract

The present invention relates to a gearless permanent-magnetic synchronous traction machine which has the structure that a bond 15 is sheathed on a bowl-shaped outer rotor 1 of a main shaft 13, wherein an empty cylinder 101 is arranged in the bowl-shaped outer rotor 1; a traction wheel 2 is fixed at the outer surface 100 of the outer rotor 1, and a braking surface 3 is arranged at the bowl-shaped opening of the outer rotor; a bearing 9 and a stator 5 are orderly sheathed on the outer circle surface of the empty cylinder 101 of the outer rotor 1, the stator 5 is in a swallow shape, the wings of the stator 5 are curved backward to form an opening annular groove 500, and a flange 501 is arranged in the inner hole of the stator 5; stator armature cores 7 wound with stator windings 6 are orderly arranged in the annular groove 500 of the stator 5, a magnet yoke 4 and permanent-magnet steel 14 abutted with the magnet yoke 4 are arranged on the outer rotor 1, the inner hole flange 501 of the stator 5 is connected to the bowl edge of a bowl-shaped piece 8 at the hole bottom, and a bearing 10 and the main shaft 13 are orderly connected to a bowl bottom hole.

Description

Gearless permanent-magnet synchronous traction machine

Technical field

The present invention relates to elevator traction machine, relate in particular to a kind of low speed high torque and gearless permanent-magnet synchronous traction machine with hand-barring.

Background technology

Along with the development need of modern architecture industry, elevator except that having proposed low noise, efficient, reliability, is also required small room or do not have the structure of machine room formula.

In the prior art, Chinese invention patent ublic specification of application CN1324139A as shown in Figure 2 (open day: November 28 calendar year 2001), disclosed name is called " directly driving synchronous dragger with Nd-Fe-B permanent magnetic rotor " (Fig. 3 is the end view of Fig. 2), adopts multipole outer-rotor structure and two layers of annular stator structure; The yoke 02 of external rotor 01 is both as the magnetic circuit that is configured to motor of salient pole magnet steel 03, also as the fixed support of traction sheave 04; Internal stator is made up of stator inner loop 05, stator core 07, armature winding 06 and stator outer shroud 09; Traction sheave 04 is fixed on the external rotor 01, stator and rotor support by bearing 08, adopt fabricated construction between stator inner loop 05 and the stator outer shroud 09, be fixed with brake arm 010 on the stator outer shroud 09, between brake arm 010 and the external rotor 01 brake strip 017 is arranged as braked wheel, electromagnet 014, compression spring 015 and screw rod 016 are installed in the top of stator outer shroud 09, brake arm 010 is installed in the moving fulcrum place of both sides, stator outer shroud 09 lower end, compression spring 015 is connected with brake arm 010, on the little axle 011 of motor photoelectric encoder is installed; The salient pole magnet steel 03 that external rotor 01 inner surface mounts adopts high performance Nd-Fe-Bo permanent magnet material; Armature winding 06 adopts the fractional slot winding structure; Stator core 07 adopts flume structure; The aperture of opening on the external rotor 01 012 both can be used as the water flowing heat transmission, can be used as the point of application of dependent manual operation elevator when sudden power again.Advantages such as though said structure is compact, torque is big, loss is little, noise is low, vibration is little, promote steadily and flat bed is accurate, but there is following defective in the structure of this traction machine: traction sheave need be pulled down rotor when changeing in the lump, then causes between stator and the rotor air gap inhomogeneous easily; Inner sealing formula Bearing Installation not only can't finely lubricate and reduce useful life again; This enclosed construction also is unfavorable for motor radiating.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of gearless permanent-magnet synchronous traction machine, is convenient to maintenance, and releasably connects as one with hand-barring.

For solving the problems of the technologies described above, gearless permanent-magnet synchronous traction machine of the present invention, comprise adopt key be set in main shaft in the bowl-type external rotor of free cylinder is arranged, this external rotor bowl-type edge butt joint yoke and on this yoke, be provided with permanent-magnet steel, fix a traction sheave in the outer surface of said external rotor and be provided with braking surface at its bowl-type mouth place, the periphery of the void column body of said external rotor successively bearing set and be swallow shape and wing crooked backward constitute comprise that open annular groove and endoporus have the stator of flange, the stator armature iron core that is wound with stator winding is set in this open annular groove, the yoke of said external rotor and permanent-magnet steel reach in the said open annular groove and said permanent-magnet steel is faced said stator armature iron core, the bowl edge of bowl connects the said flange of said stator at the bottom of the hole, the bowl bottom orifice of bowl connection bearing and main shaft successively at the bottom of this hole.

The present invention adopts open external rotor to be connected for the stator in hole with the inboard and is loaded on main shaft by bearing holder (housing, cover), and assembly precision of this structure is accurate, does not need dismounting when maintenance, has guaranteed that air gap is even between external rotor and the stator; One tank filler sleeve that leads in bearing is arranged on the external rotor,, guarantee the bearing good lubrication so that regularly bearing is refueled; Owing to adopt Open architecture, make the complete machine thermal diffusivity good; Traction sheave is loaded on the external rotor outer surface, and its compact conformation, volume are little; Main shaft stretches out and locates to connect the hand-barring of any structure, so not only keeps in repair safety, and is applicable to the installation of small room or machine-roomless lift.

Description of drawings

The present invention is further detailed explanation below in conjunction with accompanying drawing and embodiment:

Fig. 1 is the structural representation of gearless permanent-magnet synchronous traction machine of the present invention;

Fig. 2 is the structural representation of existing DC driven synchronous dragger with Nd-Fe-B permanent magnetic rotor;

Fig. 3 is the end view of Fig. 2.

Embodiment

As shown in Figure 1, the structure of gearless permanent-magnet synchronous traction machine of the present invention comprise adopt key 15 be set in main shaft 13 in the bowl-type external rotor 1 of free cylinder 101 is arranged, this external rotor 1 bowl-type edge butt joint yoke 4 and on this yoke 4, be provided with permanent-magnet steel 14.Fix a traction sheave 2 and be provided with braking surface 3 at its bowl-type mouth place at outer surface 100 places of this external rotor 1.The periphery of the void column body 101 of said external rotor 1 successively bearing set 9 and be the swallow shape and wing crooked backward constitute comprise that open annular groove 500 and endoporus have the stator 5 of flange 501.The stator armature iron core 7 that is wound with stator winding 6 is set in said open annular groove 500.The yoke 4 of said external rotor 1 and permanent-magnet steel 14 reach in the said open annular groove 500 and said permanent-magnet steel 14 is faced said stator armature iron core 7.The bowl edge of bowl 8 connects the said flange 501 of said stator 5 at the bottom of the hole, 8 bowls of bottom orifices of bowl connection bearing 10 and main shaft 13 successively at the bottom of this hole.

Be parallel in the void column body 101 of main shaft 13 and be provided with the tank filler sleeve 11 that communicates with said bearing 9.

Comprise also and the 8 parallel encoders 13 that are sleeved on main shaft 13 extensions of bowl at the bottom of the hole that this encoder both can be used as the dust-break piece of bearing 10, can make things convenient for the cleaning of bearing 10 lubricated again when pulling down.Said main shaft 13 is provided with the extension 131 that can connect hand-barring, so that when elevator cut off the power supply or sends out the dirt fault, with the extension 131 that hand-barring is inserted in main shaft 13, rotary handle was just finished the elevator lifting task safely.

Claims

1, a kind of gearless permanent-magnet synchronous traction machine, it is characterized in that: comprise adopt key (15) be set in main shaft (13) in the bowl-type external rotor (1) of free cylinder (101) is arranged, this external rotor (1) bowl-type edge butt joint yoke (4) and on this yoke (4), be provided with permanent-magnet steel (14), locate to fix a traction sheave (2) at the outer surface (100) of said external rotor (1) and be provided with braking surface (3) at its bowl-type mouth place, the periphery of the void column body (101) of said external rotor (1) successively bearing set (9) and be swallow shape and wing crooked backward constitute comprise that open annular groove (500) and endoporus have the stator (5) of flange (501), the stator armature iron core (7) that is wound with stator winding (6) is set in this open annular groove (500), the yoke (4) of said external rotor (1) and permanent-magnet steel (14) reach in the said open annular groove (500) and said permanent-magnet steel (14) is faced said stator armature iron core (7), the bowl edge of bowl at the bottom of the hole (8) connects the said flange (501) of said stator (5), and the bowl bottom orifice of bowl at the bottom of this hole (8) is connection bearing (10) and main shaft (13) successively.

2, gearless permanent-magnet synchronous traction machine as claimed in claim 1 is characterized in that: also comprise being provided with the tank filler sleeve (11) that communicates with said bearing (9) in the said void column body (101) that is parallel to said main shaft (13).

3, gearless permanent-magnet synchronous traction machine as claimed in claim 2 is characterized in that: also comprise and the parallel encoder (12) that is sleeved on said main shaft (13) extension of bowl (8) at the bottom of the said hole.

4, gearless permanent-magnet synchronous traction machine as claimed in claim 3 is characterized in that: the extension (131) that also comprises the said main shaft (13) that can connect hand-barring.