CN101814809A

CN101814809A - Air gap adjusting device for permanent-magnetic direct-drive wind generator

Info

Publication number: CN101814809A
Application number: CN 201010136706
Authority: CN
Inventors: 陈习坤; 尹耀安; 贺建湘; 刘亚
Original assignee: XEMC Windpower Co Ltd
Current assignee: XEMC Windpower Co Ltd
Priority date: 2010-03-31
Filing date: 2010-03-31
Publication date: 2010-08-25
Anticipated expiration: 2030-03-31
Also published as: CN101814809B

Abstract

The invention discloses an air gap adjusting device for a permanent-magnetic direct-drive wind generator, which comprises a conical support with a step shaft, a hydraulic brake, an outer flange I, an outer flange II, an inner flange and a brake ring, wherein the inner flange is fixedly connected with the end face of the step shaft of the conical support; at least three lug bosses are arranged nearby the large end of the conical support along the circumferential direction; the hydraulic brake is arranged in a hole on the lug boss and fastened on the lug boss through bolts; a hydraulic cylinder is arranged in the hydraulic brake, the top of the hydraulic brake is provided with an oil hole communicated with the hydraulic cylinder, a piston is arranged in the hydraulic cylinder, and the end part of the piston is provided with a friction plate; the friction end face of the friction plate is a circular surface, and the arc radius of the friction end face of the friction plate is in accordance with the inside diameter of the brake ring; and the hydraulic brake and the brake ring are at the same axial position. The air gap adjusting device has simple operation, and is favorable for lightening the labor intensity of workers and improving the production efficiency.

Description

A kind of air gap adjusting device for permanent-magnetic direct-drive wind generator

Technical field

The present invention relates to a kind of wind-driven generator, more particularly, relate to a kind of air gap adjusting device for permanent-magnetic direct-drive wind generator.

Technical background

For permanent magnet direct-driving aerogenerator, very important step when the adjusting of air gap is the assembling permanent magnet direct-driving aerogenerator between stator and the rotor, but during assembling, must be earlier with stator, rotor fastening good after, the just uniformity of air gap between energy measurement stator and rotor, and disposable assembling, the air gap uniformity often can not meet design requirement, usually need repeatedly to adjust, during each the adjustment, all want earlier all fastening bolts to be unclamped, adjust the relative position between stator and rotor again, tight a bolt again, air gap uniformity up between stator and rotor adheres to specification, whole adjustment process, troublesome poeration, consuming time many, labour intensity is big.

Summary of the invention

The objective of the invention is to overcome the above-mentioned defective that prior art exists, a kind of air gap adjusting device for permanent-magnetic direct-drive wind generator simple to operate is provided.

The present invention realizes by following technical proposals: it comprises the taper support of being with multidiameter, hydraulic brake, the outward flange I, the outward flange II, inner flange, braking ring, the multidiameter end face that inner flange and taper are supported is connected, along the circumferential direction be provided with at least three boss near the big end that taper is supported, hydraulic brake is installed in the hole on the boss, and by bolted on boss, be provided with hydraulic cylinder in the hydraulic brake, the hydraulic brake top has the oilhole that communicates with hydraulic cylinder, piston is housed in the hydraulic cylinder, pistons end is equipped with friction plate, the abrasive end face of described friction plate is an arc surface, the arc radius of friction plate abrasive end face is consistent with the braking ring internal diameter, and hydraulic brake and braking ring are at identical axial location.

The base bearing inner ring of generator is installed on the multidiameter of taper support, outward flange I, outward flange II and base bearing outer ring connect firmly, outward flange II and generator amature left end connect firmly by bolt, and the generator amature right-hand member links to each other with braking ring, and the right-hand member that big end and generator unit stator are supported in taper is connected.

During assembling, unclamp the bolt that works the effect of connecting firmly between outward flange II and the generator amature left end, work as generator unit stator, between the generator amature along the air gap value in circumferential position somewhere when excessive, hydraulic brake is started working, hydraulic oil injects hydraulic cylinder by oilhole, under the effect of oil pressure, piston is extrapolated, because piston and brake(-holder) block are connected, when piston outwards moves, friction plate will outwards be promoted by piston and contact with the braking ring inner surface, and friction plate and braking ring effect produce braking moment, give radially outside power of braking ring, again since generator amature and braking ring be connected, braking ring pushing generator rotor outwards moves, and generator unit stator is fixed on taper and supports big end and can not relatively move, and therefore can reduce the air gap at this place; When if the air gap value in somewhere is too small, locating corresponding 180 degree position air gaps just greatly, on 180 degree positions of correspondence, repeat above-mentioned steps so with this, can reduce the air gap of 180 corresponding degree positions, thereby make the air gap at this place increase; When everywhere air gap between generator unit stator and the generator amature adjust to meet design requirement after, again the bolt that works the effect of connecting firmly between outward flange II and the generator amature left end is tightened.

The invention has the beneficial effects as follows: because air gap is regulated by hydraulic means, before air gap mixes up, hydraulic means applies outside power to generator amature always, so under the state that the bolt that works the effect of connecting firmly between outward flange II and the generator amature left end is not tightened, also can measure the size of air gap everywhere easily and regulate, like this, help alleviating working strength of workers, enhance productivity.

Description of drawings

Fig. 1 is the embodiment of the invention and base bearing inner ring, base bearing outer ring, generator unit stator, generator amature assembly structure schematic diagram;

Fig. 2 is a hydraulic brake structural representation embodiment illustrated in fig. 1;

Fig. 3 is a hydraulic brake cutaway view shown in Figure 2.

Embodiment

Below in conjunction with drawings and Examples the present invention is further described.

With reference to accompanying drawing, present embodiment comprises the taper support 9 of being with multidiameter, outward flange I 10, outward flange II 4, inner flange 16, hydraulic brake 8, braking ring 6, inner flange 16 is connected with the multidiameter end face of taper support 9, along the circumferential direction be provided with 3 boss 5 near the big end of taper support 9, hydraulic brake 8 is installed in the hole 7 on the boss 5, and be fastened on the boss 5 by bolt 12, be provided with hydraulic cylinder 13 in the hydraulic brake 8, hydraulic brake 8 tops have the oilhole 14 that communicates with hydraulic cylinder 13, piston 15 is housed in the hydraulic cylinder 13, piston 15 ends are equipped with friction plate 11, the abrasive end face of described friction plate 11 is an arc surface, the arc radius of friction plate 11 abrasive end faces is consistent with braking ring 6 internal diameters, and hydraulic brake 8 and braking ring 6 are on identical axial location.

The base bearing inner ring 18 of generator is installed on the multidiameter of taper support 9, and outward flange I 10, outward flange II 4 connect firmly with base bearing outer ring 17; Outward flange II 4 is connected by bolt I 3 with generator amature 2 left ends, and generator amature 2 right-hand members link to each other with braking ring 6, and the right-hand member that 9 big ends and generator unit stator 1 are supported in taper is connected.

During assembling, unclamp bolt I 3, when generator unit stator 1, between the generator amature 2 along the air gap value in circumferential position somewhere when excessive, hydraulic brake 8 is started working, hydraulic oil injects hydraulic cylinder 13 by oilhole 14, under the effect of oil pressure, piston 15 is extrapolated, because piston 15 is connected with friction plate 11, when piston 15 outwards moves, friction plate 11 will outwards be promoted by piston 15 and contact with braking ring 6 inner surfaces, and friction plate 11 produces braking moment with braking ring 6 effects, gives 6 one radially outside power of braking ring, again owing to generator amature 2 and braking ring 6 are connected, braking ring 6 pushing generator rotors 2 outwards move, and generator unit stator 1 is fixed on taper and supports 9 big ends and can not relatively move, so can reduce the air gap at this place; When if the air gap value in somewhere is too small, locating corresponding 180 degree position air gaps just greatly, on 180 degree positions of correspondence, repeat above-mentioned steps so with this, can reduce the air gap of 180 corresponding degree positions, thereby make the air gap at this place increase; By aforesaid operations, everywhere air gap between generator unit stator 1 and the generator amature 2 can be adjusted to and meet design requirement, after adjusting, again bolt I 3 is tightened.

Claims

1. air gap adjusting device for permanent-magnetic direct-drive wind generator, it is characterized in that, comprise the taper support of being with multidiameter, hydraulic brake, the outward flange I, the outward flange II, inner flange, braking ring, the multidiameter end face that inner flange and taper are supported is connected, along the circumferential direction be provided with at least three boss near the big end that taper is supported, hydraulic brake is installed in the hole on the boss, and by bolted on boss, be provided with hydraulic cylinder in the hydraulic brake, the hydraulic brake top has the oilhole that communicates with hydraulic cylinder, piston is housed in the hydraulic cylinder, pistons end is equipped with friction plate, the abrasive end face of described friction plate is an arc surface, and the arc radius of friction plate abrasive end face is consistent with the braking ring internal diameter, and hydraulic brake and braking ring are at identical axial location.