CN86100702A

CN86100702A - Motor

Info

Publication number: CN86100702A
Application number: CN 86100702
Authority: CN
Inventors: 格特·尼尔
Original assignee: Eastway Holdings Ltd
Current assignee: Eastway Holdings Ltd
Priority date: 1986-01-24
Filing date: 1986-01-24
Publication date: 1987-08-05

Abstract

The invention provides a kind of method at motor internal fixation stator.Motor comprises that a casing, one are contained in that rotor in the casing can endwisely slip for casing with one and relative rotor is made coaxial mounted stator, this method comprises: the annular chamfer surface that utilizes coordinative role on each end of stator on the installation site, and forces together stator clamp to guarantee that stator is fastened on the position with casing and stator module.

Description

Motor

The method that the present invention relates to a kind of method of its stator of casing internal fixation at motor and utilize method of the present invention that existing motor is rebuild again.

By example, the present invention is described with reference to heavy electric machinery.This motor usually will bear extremely disadvantageous condition of work, and in addition, mechanically be coupled with employed plant equipment usually, thereby motor can not be in stand-by state at the scene as early as possible.When this motor is malfunctioning, usually need from driven equipment, as the wiring that removes mechanical couplings and pull down the motor power supply with motor on the mechanical lathe tool in pump or the mining.Remove mechanical couplings and pull down power line and coupling or reclosing power line again, must be finished and whole motor need remove and deliver to that repair shop repairs or maintenance by those skilled in the art, it causes the serious waste of production time.

In the practice, have been found that fault that motor stator produces represented the failure cause of most motors, and purpose of the present invention is exactly to reduce and the relevant problem of generation stator failure.

A kind of method that is used at motor internal fixation stator, this motor comprises a casing, the rotor and the relative rotor that are loaded in the casing are done coaxial mounted, the stator that slides vertically of casing relatively, the step that this method comprises is: the coordinative role of the face by the endless belt chamfering on each end of stator puts the stator wedging in place, and casing and stator module are pressurizeed together to guarantee that stator is pressed onto on its position that should locate.

This method may comprise following concrete steps: that extend at assembling circumferential direction on the stator, that the assembling circumferential direction extends towards outer contact-making surface with in casing, be in the inside locating surface of coaxial arrangement relation, insert contact-making surface between the locating surface and by using an end plate that stator is pressed on the installation site, when fixing this end of casing, vertically contact-making surface and locating surface are forced together, and end plates can be pulled down to allow to unclamp chamfer surface and take out stator vertically from casing.

A locating surface can determine that this sleeve inserts casing by this way by the end face of a cannulated sleeve, that is: make contact-making surface utilize one to add the end plate that is pressed in the sleeve other end and tightly be inserted between the locating surface and the locating surface on the cannulated sleeve in the casing.

The present invention includes a kind of method of rebuilding motor, this motor comprises a casing, a rotor and a stator of installing with rotor coaxial that is installed in the casing, this method may further comprise the steps: unload stator in casing, the outside contact-making surface that circumferential direction extends is installed on stator, in casing, inwardly ring-type locating surface is set, and utilizes to be clipped in contact-making surface in the middle of the locating surface and to apply one and stator is fixed in the casing stator module and the coarctate clamp pressure of casing by coaxial arrangement relation.

This method may comprise following concrete steps: locating surface inside in the end is set in the casing and forms the locating surface of a vicinity on a cannulated sleeve, the configuration of the end face of this sleeve has been determined contiguous locating surface, and utilize the clamp pressure that end plate applied that is pressed in the sleeve other end, these contact-making surfaces are clamped between far and near two locating surfaces inwardly.

The present invention is further described with reference to the accompanying drawings, wherein:

Fig. 1 is the end view that the simple partial cross section of motor, part are decomposed, and the stator of this motor can the method according to this invention be fixed; And

Fig. 2 is with last similar, the method according to this invention, the end view of the motor of the prior art in rebuilding.

In Fig. 1, the motor with casing 10 comprises one first end plate 12, and its rotor 14 is installed with cooperating of bearing assembly by means of the axle journal of armature spindle 16, and above-mentioned bearing assembly is by bearing housing 18, and roller bearing 20 and bearing housing cover plate 22 are formed.Armature spindle 16 is supporting a rotating blading 24, and it is fixed on the armature spindle 16 with key or other mode.One second end plate 30 usefulness motor screws 32 are fixed on the casing, and this end plate is supporting a roller bearing 34 in bearing housing 36, and the outer race of its middle (center) bearing 34 is for being slidingly matched.The end of armature spindle 16 is connected with bearing 34 with axle journal, thus armature spindle 16 by end plate 12 and 30 at the two ends of casing 10 supported firmly.

6 rod members 26 are fixed in the casing 10, by motor screw 28 rod member 26 1 ends are fixed on first end plate 12, by screw 32 rod member is fixed in another end plate 30 to guarantee suitable spatial joint clearance, rod member 26 utilizes a grinding machine attrition process after being installed in the casing 10, like this, the interval of the inner surface 26.1 of rod member 26 equals to be fixed on the external diameter of the measured stator 38 of a pair of retainer ring 40 on the stator.

The outer surface of retainer ring 40 cuts into chamfering at 40.1 places, and rod member 26 also is cut into chamfering 26.2, reducing between the rod member effectively spaced radial, thereby has prevented that stator 38 from sliding and depart from its service position along rod member 26.

Can prevent that by a right circular cylinder shape cannulated sleeve 42 stator 38 from oppositely moving, an end face of axle sleeve 42 is cut into chamfering at 40.1 places.Chamfering complementation on rod member 26, retainer ring 40 and the sleeve 42.When the size of sleeve 42 is made and is suitable for end plate 30 and is fixed on the casing, end plate 30 can clamp sleeve 42 and retainer ring 40 is imposed clamp pressure, thereby the chamfer surface 40.1 that constitutes contact-making surface is sandwiched between the chamfer surface 42.1 formed inside locating surfaces by chamfer surface on the rod member 26 26.2 and sleeve 42.

For stator 38 is fixed in the motor, on rod member 26, slip into stator 38 in the casing 10 vertically, utilize then the chamfering contact-making surface 40.1 on the retainer ring 40 by wedging between the chamfering locating surface that constitutes by the chamfer surface 42.1 on chamfer surface on the rod member 26 26.2 and the sleeve 42 respectively, thereby, make stator be pressed in the casing on the fixed position, begin since end plate 30 is fixed on the casing 10, at this moment casing and stator module just have been pressed together.

Desire unloads stator 38, only need be reversed said procedure.Remove end plate 30 and can unload lower sleeve 42, unload lower sleeve 42 and can move down stator.Only stator 38 need be slided stator 38 can be unloaded from casing 10 along rod member 26 and maintain or repair.

The end bearing 34 that is fixed on the end plate 30 in the bearing cartridge 36 has an outer race, it utilizes the effect of the clamp power of axle box cover plate 44 to be fixed on the end plate 30, and this clamp power is formed by the pressing of a chamfering of mending mutually on whole pressure ring 44.1 and bearing 34 outer races of chamfering inwardly.Motor screw 46 is used for cover plate 44 is fixed on the bearing housing 36.Armature spindle 16 has a fillet surface 16.1 outwardly, it with the inside race of bearing 34 on a complementation chamfering mutually pressing prevent from when making bearing 34 extruding chamferings 16.1 owing to the action that end plate 30 is fixed on casing 10, to rotate with fixing inside race relative to armature spindle 16.Bearing 34 be fully with fillet surface 44.1 and 16.1 with the bearing inner and outer race on the pressing of corresponding complementary fillet surface produce to fix, rather than utilize bearing 34 and the axle 16, or the pressure fitted between bearing 34 and the bearing housing 36 is fixing, is to be slidingly matched between this bearing 34 and above-mentioned two parts.This will be of value to end plate and bearing assembly unloads from axle 16, also is of value to bearing 34 and unloads from bearing housing 36.

Motor has two air circulation fan 24 and 48.Fan 48 is easy to pull down, and it utilizes a center spiral cover 50 to be fixed on its service position, and this spiral cover is screwed in the mantle fiber hole 52 of armature spindle 16 ends.Fan 48 is slidingly matched with the end of armature spindle 16, and utilizes the pressing of formation between fillet surface 16.2 on the axle 16 and the complementary inclination angle face 48.1 in fan 48 installing holes to be fixed, and rotates with respect to axle to prevent fan.When spiral cover 50 is screwed into when making the fan fix in position in the mantle fiber hole 52, fillet surface 16.2 and 48.1 is done the friction pressings, to fix fan 48, prevents that it from rotating with respect to armature spindle 16.

Casing cover 54 is fixed on the casing 10 and by 56 sealings of a porose casing cover plate, this cover plate 56 utilizes screw 59 to be fixed on the casing cover 54.

In the zone of terminal box 60, stator 38 has convex connector lug (not shown), and casing has complementary spill connector lug (not shown).When stator slided to the right, convex and spill connector lug will be thrown off, thereby did not need to pull down power supply wiring when unloading the maintenance of stator do or repairing again.

A motor of the prior art can be rebuild or reequip and make the stator of the prior art motor can utilize method of the present invention, and is fixed on its casing.This prior art motor comprises a casing 100 as shown in Figure 2, and wherein hold-down support 102 is used for fixing the stator 104 of motor.Stator 104, such as having a pair of annulus 106, the column part of bearing 102 can be by being fixed on this annulus as welding.Bearing 102 shown in the figure is by the bearing of burning torch with itself and annulus 106 after separatings, thus on annulus 106 residue 102.1 of remaining bearing 102 dentations only.Be appreciated that to exist many kinds of methods, and the example here only is in order to illustrate at casing inner fixed stator.In principle, stator all must unload from casing in each case, existing stator accessory also must unload, and comprises that the stator assembly parts of chamfering locating surface and chamfering contact-making surface must correspondingly be fixed on casing and the stator, so that stator can the method according to this invention be fixed in the casing.

In case stator 104 unloads, annulus 106 can together unload or only unload the profile of tooth residue 102.1 of undersetting 102.In addition, the bearing residue unloads from the inside of casing 100, and casing prepare to insert the rod member 108 of several assembling usefulness, they can be fixed on casing 100 inner surfaces around on.Then, two ends and the casing 100 that a pair of mounting ring 110 is fixed on stator 104 prepares to lay a cannulated sleeve 112.In case rod member 108 has been fixed in the casing 100, its inner surface 108.1 just is ground to required spaced radial distance, and the stator 104 that then has chamfering mounting ring 110 to be fixed thereon can insert casing and slide up to its inboard going up or the mounting ring of vicinity and chamfering locating surface 108.2 pressings on the rod member 108 along rod member.Sleeve 112 can slip into casing on the inner surface on the rod member 108 108.1 then, up to the chamfering contact-making surface pressing of the chamfering end face 112.1 of sleeve 112 and outermost or contiguous mounting ring 110.

The size of sleeve 112 should be adapted to prior motor end face (not shown), so that the contact-making surface that chamfering constituted on the mounting ring 110 is clipped in by respectively between the locating surface that the fillet surface 108.2 and 112.1 on rod member 108 and the sleeve 112 constitutes.Perhaps also can prepare a special end plate and be used for guaranteeing that contact-making surface is clipped between the locating surface in good condition.

In order to finish repacking, what make the bearing that the axle journal of armature spindle 114 is connected with the motor end plate and be installed in electric motor fan on the armature spindle 114 fixingly should prepare to prevent that it is respectively with respect to the rotation of axle and end plate, by means of said method, promptly, make chamfering on bearing fan and the end plate respectively and realize at axle 114.In addition, stator 104 also can have push-in type convex connector lug (not shown), and it is used for when stator 104 slips into casing 100 and complementary female connector lug (not shown) wedging mutually.

Stator can unload in this way and re-assembly with reference to Fig. 1.

Claims

1, a kind of stator is fixed on method in the motor, motor comprises a casing, the stator that rotor that is installed in the casing can endwisely slip with a relative casing and install with respect to rotor coaxial, the step that this method comprises is characterized in that: utilize the annular chamfer face of coordinative role on each end of stator that the stator wedge is clipped on its position, and casing and stator module are forced together to guarantee that the stator clamping is on its position.

2, comprise the following steps: to be provided with that on the stator circumferential direction stretches according to a kind of method of claim 1, outside contact-making surface, and the locating surface inwardly that axial arranged circumferential direction stretches in casing, contact-making surface is inserted between the locating surface also by an end plate, with the stator clamping on its position, when this end plate is fixed on casing terminal, be used for axially contact-making surface and locating surface being clipped together and fixed stator, this end plate can be pulled down to allow fillet surface to unclamp and stator axially unloads from the casing upper edge from casing.

3, a kind of method according to claim 2 comprises a cannulated sleeve, the shape of one end determine end plate that a locating surface and utilization be pressed in this sleeve other end with these contact-making surface clamps in the middle of the locating surface of locating surface on the casing and cannulated sleeve one end.

4, a kind of method of rebuilding motor, its motor comprises a casing, a rotor and a stator of installing at rotor coaxial that is installed in the casing, the step that this method comprises, it is characterized in that: unload stator from casing, the contact-making surface outwardly that circumferential direction stretches is set on stator, and in casing, be provided with axial arranged inwardly, the locating surface of annular utilizes the contact-making surface clamp in the middle of locating surface and apply casing and the coarctate pressure of stator module are fixed to stator in the casing.

5, according to a kind of method of claim 4, comprise the steps: that end at casing is provided with an inside locating surface and makes a positioned adjacent face and make a positioned adjacent face in the casing end on a cannulated sleeve, the configuration of the end face of this sleeve has just been determined the locating surface of this vicinity, and utilizes and to be pressed in the clamp pressure that an end plate on the sleeve other end applies two contact-making surfaces are clamped in the middle of inside far away, nearly two locating surfaces.