JP2005086951A - Stator-holding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stator-holding device which can prevent a stator core or a coil from being damaged. <P>SOLUTION: The stator-holding device having the stator core 1, formed by laminating a plurality of stator core thin plates includes at least two arcuate bases 2 having an arcuate sectional bottom 24 which has a predetermined width opposed to an outer peripheral surface 10 of the stator core 1 inserted and held by the outer peripheral edge of the stator core 1, and an arcuate-holding groove 20 formed of two sidewall faces 25 opposed to the peripheral edge of the stator core 1 at the axial side face rising from the bottom 24; a connection means 3 connecting openably one end of the one arcuate base 2 in the circumferential direction and the other end of the other arcuate base 2, in a direction such that the holding grooves 20 are separating and forming a cylindrical holding groove 20 for holding the outer peripheral edge of the stator core 1 in the circumferential direction in the holding groove 20; and an opening and closing means 4 for opening and closing both the ends of the connected arc-like base 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a holding device that holds a stator core composed of a plurality of laminated stator core thin plates among stator cores used in a motor.

  Generally, a motor is composed of two parts: a stator (stator) and a rotor (rotor). The motor generates a rotating magnetic field by switching a current applied to a coil wound around a stator core of the stator, and rotates the rotor with the rotating magnetic field. In order to improve the performance of the coil, a magnetic path is formed by using a magnetic material having a high magnetic permeability as the stator core, and a rotating magnetic field is effectively generated.

  Furthermore, in order to reduce iron loss, a stator core having a structure in which a plurality of thin magnetic material plates are stacked is used. Therefore, a general ring-shaped stator core has a laminated structure, and is formed by partially joining a plurality of thin plates by welding or the like.

  At the time of production, after inserting the coil into the stator core, the operator lifts and reverses the stator by himself and then moves the stator core to the next routing step. This moving / reversing operation is difficult because the size of the motor is increased and the stator core is also increased in size.

  In addition, the stator core having a laminated structure is likely to be damaged during movement and reversal, for example, a thin plate is peeled off from the surface of the stator core, particularly the axial end portions of the outer peripheral surface, due to dropping or impact. Further, the end portion of the coil wound around the stator core protrudes in the axial direction from the stator core. In particular, before the coil is reinforced, the end portion of the coil is deformed or insulation failure is liable to occur due to breakage of the coil. Therefore, care must be taken when moving and reversing the stator. Therefore, a stator holding device that can be handled so that the stator core and the coil do not come into contact with other members is required.

By the way, as an apparatus for holding the stator core, for example, there is a rotation support apparatus described in Patent Document 1. The rotation support device includes a plurality of receiving rollers arranged in an arc shape so as to be fitted to the outer periphery of the stator core, a rotation head having a rotation shaft that is rotated by a rotation driving unit, and fitted in a groove on the inner periphery of the stator core. Have. However, the rotation support device of Patent Document 1 is intended to perform operations such as coil racing while rotating, and is not a holding device intended to hold the stator core when it is moved or reversed.
JP-A-9-74723

  An object of this invention is to provide the stator holding | maintenance apparatus which can prevent damage to a stator core or a coil. It is another object of the present invention to provide a stator holding device that can easily move and reverse the stator core.

  The stator holding device of the present invention is a stator holding device having a stator core formed by stacking a plurality of thin stator core plates, and has a predetermined width facing the outer peripheral surface of the stator core into which the outer peripheral edge of the stator core is inserted and held. At least two arcuate bases having an arcuate holding groove formed by a cross-section arc-shaped bottom surface having two and two side wall surfaces rising from the bottom surface and facing the peripheral edge of each axial side surface of the stator core; One end of one arcuate base portion in the circumferential direction and the other end of the other arcuate base portion are connected so as to be openable and closable at least in the direction in which the respective holding grooves move away, and the respective holding grooves are arranged in the circumferential direction. It has a connection means for forming a cylindrical holding groove for holding the outer peripheral edge, and an opening / closing means for opening and closing both ends of the connected arcuate base.

  In the stator holding device of the present invention, both end portions of the bottom surface defining the holding groove close to the side wall surface are deep bottom surfaces having a larger inner peripheral diameter than the center side portion thereof, and the holding bottom is the stator core. It is preferable that the axial end ends of the outer peripheral surface cannot be contacted.

  The stator core thin plate has at least two protrusions that protrude toward the outer peripheral surface and have bolt insertion openings that are inserted in the axial direction, and the stator core has at least two protrusions stacked in the axial direction. Preferably, the arcuate base has at least two deep grooves extending in the thickness direction for accommodating the protrusion. At this time, it is preferable that one of the deep grooves is formed at the ends of two adjacent arcuate bases connected by the connecting means. Furthermore, the groove surface that divides the deep groove formed at the ends of the two arcuate bases, both end portions in the extending direction of the deep groove are deep groove surfaces that are deeper than the central portion, It is preferable that the deep groove surface of the deep groove cannot be brought into contact with both end portions in the axial direction of the outer peripheral surface of the protrusion of the stator core.

  Moreover, it is preferable that at least a portion of the arc-shaped base portion that comes into contact with the stator core is made of a synthetic resin.

  It is desirable to have a pair of engaging pins projecting in the outer circumferential direction at the back-facing portions of the arc-shaped base portion closed in a ring shape. At this time, it is desirable that the pair of engaging pins be in a coaxial position with a line passing through the center of gravity while holding the stator core. Further, it is desirable that the set of engagement pins is detachable from the arcuate base, and at least two types of pins having different lengths are prepared. It is desirable to provide elevating means having a pair of hooks respectively engaged with the pair of engaging pins. At this time, it is desirable that the set of hooks is suspended by a bendable suspension member. Furthermore, the suspension member is preferably linear.

  According to the stator holding device of the present invention, the outer peripheral edge of the stator core is held by the side wall surface of the holding groove in the axial direction and the bottom surface of the holding groove in the radial direction by inserting and holding the outer peripheral edge portion of the stator core in the holding groove. be able to. Therefore, the outer peripheral surface of the stator core can be protected. As a result, the impact applied to the stator core is reduced and damage to the stator core can be prevented.

  Furthermore, by holding the stator core in the stator holding device of the present invention, the operator can easily move and reverse the stator, and the working time can be shortened. In addition, since the stator can be easily moved / reversed, the stator core can be prevented from dropping or colliding during the move / reverse operation, and damage to the stator core or coil can be prevented.

  In addition, by disabling the stator holder in contact with both end portions in the axial direction of the outer peripheral surface of the stator core, damage to both end portions in the axial direction of the outer peripheral surface of the stator core, in particular, where the stator core thin plate is easily peeled off can be reduced.

  The stator holding device of the present invention is a stator holding device having a stator core formed by stacking a plurality of stator core thin plates. The stator holding device of the present invention includes at least two arc-shaped bases, connecting means for connecting the arc-shaped bases, and opening / closing means for opening and closing the connected arc-shaped bases. In the following, embodiments of the stator holding device of the present invention will be described in detail.

  In the stator holding device of the present invention, the stator to be held is not particularly limited as long as it has a stator core formed by stacking a plurality of stator core thin plates. The stator core thin plate may be bound by a normal method such as welding by laser or crimping by caulking after lamination. The stator core thin plate is preferably in a ring shape having a large number of slots on the inner peripheral side. Further, the stator core thin plate has at least two protrusions that protrude toward the outer peripheral surface and have bolt insertion openings that are inserted in the axial direction. The stator core has at least two protrusions that are stacked in the axial direction. It is preferable to have a form having a strip.

  In the stator holding device of the present invention, the arc-shaped base portion has a cross-section arc-shaped bottom surface having a predetermined width facing the outer peripheral surface of the stator core, and two sides facing the peripheral edge portions of the respective axial side surfaces of the stator core rising from the bottom surface. And an arcuate holding groove formed by the wall surface. The outer peripheral edge of the stator core is inserted and held in this holding groove.

  The holding groove may have any shape that allows the outer peripheral edge of the stator core to be inserted. The holding groove includes a bottom surface that partitions the holding groove and two side wall surfaces that rise from the bottom surface. The bottom surface holds the stator core from the outer circumferential direction side, but the side wall surface is held from the axial direction side.

  Although there is no particular limitation on the shape of the bottom surface, it is preferable to have a deep bottom surface having a larger inner peripheral diameter than the central portion at both ends of the bottom surface close to the side wall surface. Both end portions of the bottom face the axial end portions of the outer peripheral surface of the stator core when holding the stator. The axially opposite end portions of the stator core are portions that are easily bent to the end side and easily damaged because there are few stacked stator core thin plates as compared to the central portion. For this reason, the deep bottom surface is formed on the bottom surface so that it cannot be brought into contact with both end portions in the axial direction of the stator core, so that damage to both end portions in the axial direction can be reduced. The shape of the deep bottom surface is not particularly limited as long as it is a shape that does not come into contact with both axial end portions of the stator core.

  Further, the shape of the arcuate base portion is not particularly limited, but if the outer peripheral edge portion of the stator core has a holding groove to be inserted and held, the overall shape is preferably cylindrical.

  In the stator holding device of the present invention, the connecting means connects one end in the circumferential direction of one arcuate base and the other end of the other arcuate base so as to be openable and closable at least in the direction in which each holding groove moves away, The holding grooves are arranged in the circumferential direction to form a cylindrical holding groove that holds the outer peripheral edge of the stator core.

  Although there is no particular limitation on the form of the connecting means, it is preferable that the connecting means is composed of a hinge mechanism that can be opened / closed in a direction in which the holding groove moves away / closes. For example, it may be possible to open and close by pivotally supporting the ends of two arcuate bases or using a hinge of another member. In addition, since the stator holding device of the present invention includes two or more arc-shaped bases, for example, in the case of three arc-shaped bases, the ends of the other two arc-shaped bases are provided at both ends of one arc-shaped base. Two connection means for connection are required. The remaining two arcuate base portions are connected to each other by an opening / closing means so as to be opened and closed.

  Further, if the stator core has a shape having at least two protrusions as described above, the arcuate base portion preferably has a deep groove extending in the thickness direction for accommodating the protrusion. The deep groove may be formed so as not to contact the protrusions of the stator core, but one of the deep grooves is preferably formed at the ends of two adjacent arcuate bases connected by the connecting means. . At this time, if the deep groove is formed so that the protrusion is sandwiched by the deep groove, it plays a role of positioning in the circumferential direction when the stator is held in the stator device. However, as described above, the protrusion of the stator core originally protrudes from the ring-shaped main body portion and is more easily damaged than the main body portion, so it is better not to contact the stator holding device. Therefore, as for the groove surface which divides the deep groove, both end portions in the extending direction of the deep groove become deep deep groove surfaces as compared with the central portion thereof, and the deep groove surfaces are both end portions in the axial direction of the outer peripheral surface of the protrusion of the stator core. It is preferable that the contact is impossible.

  In the stator holding device of the present invention, the opening / closing means opens and closes both ends of the connected arcuate base. The opening / closing means is not particularly limited as long as it is formed at both ends of the connected arcuate base, and may be formed on at least one of the outer peripheral surface and the axial side surface of the arcuate base. What is necessary is just to select various clasps according to intensity | strength for the form of an opening-and-closing means.

  Further, when the closed state is set, positioning means may be provided at both ends in order to prevent the shift at both ends. For example, positioning in the thickness direction and / or the radial direction can be performed by the concave portion and the convex portion that are fitted or engaged with each other.

  In the stator holding device of the present invention, it is preferable that at least a portion in contact with the stator core is formed of a material softer than the material of the stator core, such as a synthetic resin. The connecting means and the opening / closing means are not particularly limited in material as long as they are arranged so as not to contact the stator core, and may be made of metal or the like.

  In addition, the stator holding device of the present invention preferably has an engaging means. For example, the operator can easily move the stator by engaging a handle or the like with the engaging means. In addition, it is desirable to have a pair of engaging pins that protrude in the outer circumferential direction at portions facing away from each other in the arcuate base portion closed in a ring shape. Furthermore, if the engagement pin is positioned coaxially with the line passing through the center of gravity while holding the stator core, the engagement pin can be rotated as a fulcrum, and the stator can be easily reversed.

  The shape of the engagement pin is not particularly limited, and for example, a rod shape having a predetermined length having an engagement portion at the tip is desirable. The shape of the engaging portion is not particularly limited. Moreover, it is desirable that the engaging pin is detachable from the arcuate base. If various types of engagement pins with different lengths and shapes are prepared, they can be replaced according to the application. For example, even if the size of the arcuate base is changed with the change in the size of the stator core, by appropriately selecting the length of the engagement pin, the position of the engagement portion (for example, from one engagement portion to the other engagement portion). The length to the joint part) can be made constant. Thereby, versatility can be given, without changing partner members, such as a raising / lowering means mentioned later. Further, a plurality of engaging portions may be provided on the rod-shaped engaging pin, and the engaging position can be changed according to the mating member. In addition, when the engaging pin is unnecessary, such as when storing without performing reversing / moving work, the engaging pin may be removed and used.

  In the stator holding device of the present invention, the outer peripheral portion of the stator is held by the holding groove, so that the outer peripheral surface or side surface of the stator holding device is left down or the central portion of the outer peripheral surface of the stator is supported. It may be placed in a state where it is placed on a support base, but it may also be provided with lifting means having a pair of hooks respectively engaged with the engaging pins. At this time, it is desirable that each of the pair of hooks is suspended by a bendable suspension member. If the suspension member can be bent, it is easy to engage the engagement pin and the hook. In addition, the stator holding device can be opened and closed with the engagement pin and the hook engaged. The suspension member is preferably a linear shape such as a wire.

  Hereinafter, embodiments of the stator holding device of the present invention will be described with reference to the drawings.

(Example 1)
The stator holding device of this embodiment holds the stator core 1 shown in FIG. A stator core 1 in FIG. 1 is formed by laminating a plurality of stator core thin plates 101 made of silicon steel plates and binding them by welding.

  The stator core thin plate 101 is ring-shaped and has a large number of slots 111 on the inner peripheral side. In addition, the stator core thin plate 101 has three protruding portions 113 protruding at the outer peripheral side and having openings 115 at equal intervals.

  The stator core 1 has a slot portion 11 in which the slots 111 are laminated in the axial direction, and a protrusion 13 and a bolt insertion hole 15 in which the protrusions 113 and the openings 115 are laminated in the axial direction. The protrusion 13 protrudes from the outer peripheral surface 10 of the stator core 1 to the outer peripheral side. A coil that is a bundle of magnet wires is inserted into the slot portion 11. In addition, although the coil is not illustrated in the drawing for the sake of explanation, the insertion state of the coil is the same as that of a general stator.

  FIG. 2 is a plan view of a stator holding device that holds the stator core 1. Then, sectional views taken along lines A-A ', B-B', and C-C 'in FIG. 2 are shown in FIGS. FIG. 6 is a partial perspective view of the stator holding device of this embodiment.

  The stator holding device of the present embodiment has two arcuate base portions 2 having the same shape. The arcuate base 2 is made of nylon and consists of two arcuate members 22. Each arcuate member 22 has a semicircular arc shape. The arc-shaped member 22 has an L-shaped surface composed of a bottom surface 24 having an arcuate cross section and a side wall surface 25 rising from the bottom surface 24. In addition, a deep bottom surface 26 having a U-shaped cross section is provided at both end portions of the bottom surface 24 near the side wall surface 25.

  And the arc-shaped member 22 is connected via the connection base 30 of the connection part 3 mentioned later, the opening-and-closing base 40 of the opening-and-closing part 4, and the engagement base 50 of the engagement part 5 so that the side wall surfaces 25 face each other. It becomes the arcuate base 2. At this time, a holding groove 20 having a U-shaped cross section defined by a bottom surface 24 on the same surface and two side wall surfaces 25 facing each other is formed.

  The arc-shaped base portion 2 is connected to each other at one end in the circumferential direction by the connection portion 3 and the opening / closing portion 4 so that the holding grooves 20 face each other. Two arcuate bases 2 made of arcuate members 22 that are semicircular arcs are connected to form a cylindrical shape. The holding groove 20 is also cylindrical. That is, the two arc-shaped bases 2 are generally cylindrical, and have a holding groove 20 having a U-shaped cross section on the inner peripheral surface thereof, and the holding grooves 20 are provided at both axial ends on the bottom surface 24 of the holding groove 20. A deep bottom surface 26 having a larger inner peripheral diameter.

  The arcuate base 2 has a deep groove extending in the thickness direction (axial direction) on the inner peripheral surface side. This deep groove accommodates the three protrusions 13 of the stator core 1. Two of the three protrusions are accommodated in deep grooves 21 formed in each of the two arcuate bases 2. The deep groove 21 has an asymmetrical left and right groove surface 211 having a U-shaped cross section larger than the outer shape of the ridge 13. The other deep grooves 29 are formed at the ends of the two adjacent arc-shaped bases 2. The deep groove 29 has a groove surface 291 having a U-shaped cross section, and both end portions in the extending direction of the deep groove 29 are deep groove surfaces 292 deeper than other portions (FIGS. 5 and 6). The deep groove 29 is sufficiently deeper than the protrusion of the protrusion 13. In addition, the corner of the groove opening of the deep groove 29 is partially removed to form a slope 294.

  The connecting portion 3 that connects the ends of the two arc-shaped base portions 2 so as to be openable and closable includes a metal connecting base portion 30 and a hinge member 31. The connection base 30 made of a metal block is sandwiched between the ends of the arcuate member 22 (FIG. 5), and is fixed by screws 33 in the axial direction from both arcuate members 22 side. Note that the end surface of the connection base portion 30 is disposed on the outer peripheral side of the holding groove 20 and the deep groove 29. A hinge member 31 is fixed to the connection base 30 by a screw 36 from the outer peripheral surface side of the arc-shaped base 2.

  The opening / closing part 4 that opens and closes the other ends of the two arcuate bases 2 includes a metal opening / closing base 40 and a clasp 41. The opening / closing base 40 made of a metal block is sandwiched between the ends of the arc-shaped member 22 and is fixed by screws 43 in the axial direction from both arc-shaped members 22 side. Note that the end face of the opening / closing base 40 is disposed on the outer peripheral side of the holding groove 20. A clasp 41 is fixed to the opening / closing base 40 from the outer peripheral surface side of the arcuate base 22.

  Further, the stator holding device of the present embodiment has an engaging portion 5 that engages with a hook of a stator elevator 60 described later. The engagement portion 5 includes a metal engagement base portion 50 and an engagement pin 51. The engagement base portion 50 made of a metal block is sandwiched between the center portions in the circumferential direction of the arc-shaped member 22 and is fixed by screws 53 in the axial direction from both arc-shaped member 22 sides. Note that the end surface of the engagement base 50 is disposed on the outer peripheral side of the holding groove 20 and the deep groove 21. Further, the engagement base 50 has a through hole whose inner diameter is substantially equal to the outer diameter of the engagement pin. The engagement pin 51 has a rod shape, and has a flange 511 at one end and an engagement recess 512 recessed in the circumferential direction at the other end. The engagement pin 51 inserts the engagement recess 512 side into the through hole of the engagement base 50 from the inner peripheral surface side of the arcuate base 2. The flange 511 and the engagement base 50 are fixed by a screw 56. That is, the engagement pin 51 protrudes from the outer peripheral surface of the arcuate base 2 toward the outer peripheral side. In addition, the engaging part 5 is provided in the mutually facing part of the arcuate base part, and the engaging pin 51 is provided at a position coaxial with a line passing through the center of gravity of the stator holding device.

  A procedure for holding the stator in the stator holding device of this embodiment will be described below.

  The stator holding device unlocks the clasp 41 of the opening / closing part 4 and opens it with the hinge member 31 of the connection part 3 as a fulcrum in a direction in which the holding grooves 20 move away from each other as shown in FIG. By this, it is set to an open state.

  Next, the stator holding device is arranged so that the groove surface 291 of the deep groove 29 abuts one of the three protrusions 13 of the stator core 1. At this time, the both ends in the axial direction of the outer peripheral surface 10 of the stator core 1 are arranged so as not to contact the groove surface 291. In addition, since the inclined surface 294 is formed in the groove opening of the deep groove 29, the protrusion 13 can be easily disposed in the deep groove 29 without causing the groove opening of the deep groove 29 to collide with the protrusion.

  Then, with the hinge member 31 as a fulcrum, the arcuate base portion 2 is moved in a direction in which the holding grooves 20 approach each other to be in a closed state. At this time, the outer peripheral surface 10 of the stator core 1 is inserted into the holding groove 20. Finally, if the clasp 41 is locked, the stator core 1 is held by the stator holding device.

  In this state, both end portions in the axial direction of the outer peripheral surface 10 of the stator core 1 cannot be brought into contact with the stator holding device by the deep bottom surface 26 of the holding groove 20 and the deep groove surface 292 of the deep groove 29. And the protrusion 13 of the stator core 1 is located in the deep groove 21 in the state which does not contact | abut with the groove surface 211 of the deep groove 21. FIG. Further, since the end surfaces of the metal connection base 30, the opening / closing base 40, and the engagement base 50 are arranged on the outer peripheral side with respect to the holding grooves 20 and the deep grooves 21 and 29, they contact the outer peripheral surface 10 of the stator core 1. There is nothing. Further, since the deep groove 21 has a U-shaped cross-section that is asymmetrical with the groove surface 211 having a wider groove opening on the opening / closing portion 4 side, even when the stator holding device is opened / closed, the deep groove 21 collides with the protrusion 13 of the stator core 1. There is no.

  When removing the stator from the stator holding device, the above procedure is reversed.

  The stator holding device holding the stator can be moved and reversed by the stator elevator 60 shown in FIG. The stator elevator 60 is configured to be able to move a bar 62 arranged in an arbitrary shape in the arrow direction (← →). The bar 62 is inserted into the ring 63, and the ring 63 is slidable in the axial direction. One end of an extendable telescopic rod 64 is fixed to the ring 63, and the other end of the telescopic rod 64 is connected to the center of gravity of the support rod 66 via a connecting portion 65 that can rotate about the axis. A wire 61 is fixed to both ends of the support rod 66, and a hook that engages with the engagement recess 512 of the engagement pin 51 is attached to one end of the wire 61.

  The stator holding device holding the stator is engaged with the stator elevator by the engaging pin 51. Since the engaging pin 51 is provided at a position coaxial with the line passing through the center of gravity of the stator holding device, the stator can be easily reversed. Further, when it is desired to move the inverted stator in the vertical direction, the stator can be easily moved by expanding and contracting the telescopic rod 64 of the stator elevator 60. Furthermore, if the ring 63 is slid along the bar 62, the ring 63 can be moved within the range where the bar 62 is disposed.

  FIG. 7 is a diagram schematically showing an operation of inverting the stator held by the stator holding device and moving it downward. Note that the end of the coil is shown in FIG.

(Example 2)
In the stator holding device of the present embodiment, the holding groove 20 of the stator holding device of the first embodiment is changed to a holding groove 220 shown in FIG.

  The holding groove 220 has an L-shaped surface including a bottom surface 224 having an arcuate cross section and a side wall surface 225 rising from the bottom surface 224. Further, a deep bottom surface 226 is provided at both end portions of the bottom surface 224 near the side wall surface 225. The deep bottom surface 226 has a triangular cross section, and the surface extending to the bottom surface 224 is a curved surface.

  A holding groove 220 having a U-shaped cross section defined by a bottom surface 224 on the same surface and two side wall surfaces 225 facing each other is formed.

(Example 3)
In the stator holding device of this embodiment, the opening / closing portion 4 of the stator holding device of Embodiment 1 is an opening / closing portion 34 shown in FIG. In the first embodiment, the stator core 1 is reversed and moved by the stator holding device, but in this embodiment, the axial direction of the stator core 1 is substantially parallel to the horizontal plane (laterally) by the stator holding device. The stator core 1 is rotated and moved. After the movement, the stator holding device of the present embodiment is supported sideways by the stator support base 70 shown in FIG.

  The opening / closing part 34 has two clasps 341 respectively formed on both side surfaces of the arcuate base 2. Further, at the end of the arcuate member 22 of the arcuate base 2, a projecting part 323 and a recessed part 324 that are fitted to each other are formed at a part that abuts when the opening / closing member 34 is closed.

  And when making a stator holding | maintenance device a closed state, the convex part 323 and the recessed part 324 are fitted previously, and the clasp 341 is locked after that. When the stator holding device is opened, the reverse operation may be performed.

  The stator support base 70 includes a pedestal 71 and two plate-like support plates 72. One end of the support plate 72 is fixed to the pedestal 71 in parallel to each other. The other end of the support plate 72 has a curved surface with the same curvature as that of the outer peripheral surface 10 of the stator core 1 in the thickness direction at the tip. The stator holding device is placed on the stator support base 70 so that the outer peripheral surface 10 of the stator core 1 contacts the curved surface of the support plate 72. At this time, the engaging portion 5 is placed in the left-right direction, the connecting portion 3 is located on the upper side, and the opening / closing portion 34 is located on the lower side (FIG. 10). The opening / closing operation of the stator holding device may be performed while the stator core 1 is placed on the support base 70.

  With the above configuration, even if the stator support base 70 is a support base in which the support plate 72 and the stator core 1 abut and support the stator core 1 sideways, the opening / closing portion 34 does not interfere with the support plate 72 and the stator holding The device can be opened and closed.

It is a figure which shows the stator core and stator core thin plate which are used for the Example of the stator holding | maintenance apparatus of this invention. It is a top view of the stator holding device of Example 1. FIG. 3 is a cross-sectional view of the stator holding device according to Embodiment 1 and is a cross-sectional view taken along line A-A ′ of FIG. 2. FIG. 3 is a cross-sectional view of the stator holding device according to Embodiment 1 and is a cross-sectional view taken along B-B ′ of FIG. 2. FIG. 3 is a cross-sectional view of the stator holding device according to the first embodiment, and is a cross-sectional view taken along C-C ′ of FIG. 2. It is a stator holding | maintenance apparatus of Example 1, Comprising: It is a perspective view of the connection part at the time of setting it as an open state. It is a stator holding | maintenance apparatus of Example 1, Comprising: It is a schematic diagram at the time of equip | installing in a stator elevator. It is sectional drawing of the stator holding | maintenance apparatus of Example 2. FIG. It is the top view (upper figure) and side view (lower figure) of the stator holding | maintenance apparatus of Example 3, Comprising: It is the elements on larger scale of an opening-and-closing part. FIG. 4 is a schematic diagram when the stator holding device of Example 3 is placed on a stator support, where the left diagram is a front view and the right diagram is a side view.

Explanation of symbols

1: Stator core 2: Arc-shaped base portion 20, 220: Holding groove 24, 224: Bottom surface 25, 225: Side wall surface 26, 226: Deep groove surface 21, 29: Deep groove 3: Connection portion (connection means)
4, 34: Opening / closing part (opening / closing means)
5: Engagement part (engagement means)
51: Engagement pin 60: Stator elevator 70: Stator support

Claims (12)

A stator holding device having a stator core formed by stacking a plurality of stator core thin plates,
A cross-section arc-shaped bottom surface having a predetermined width facing the outer peripheral surface of the stator core into which the outer peripheral edge portion of the stator core is inserted and held, and two sides rising from the bottom surface and facing the peripheral edge portions of the respective axial side surfaces of the stator core At least two arcuate bases with arcuate retaining grooves formed by the wall surfaces;
One end of one arcuate base portion in the circumferential direction and the other end of the other arcuate base portion are connected so as to be openable and closable at least in the direction in which the respective holding grooves move away, and the respective holding grooves are arranged in the circumferential direction. Connection means for forming a cylindrical holding groove for holding the outer peripheral edge,
Opening and closing means for opening and closing both ends of the connected arcuate base;
A stator holding device comprising:   Both end portions of the bottom surface that define the holding groove near the side wall surface are deep bottom surfaces having a larger inner peripheral diameter than the central portion, and the holding bottoms are axial end portions of the outer peripheral surface of the stator core. The stator holding device according to claim 1, wherein the stator holding device cannot be brought into contact with the stator. The stator core thin plate has at least two protrusions that protrude toward the outer peripheral surface and have bolt insertion openings that are inserted in the axial direction. The stator core has at least two protrusions that are stacked in the axial direction. Have a strip,
The stator holding device according to claim 1, wherein the arcuate base portion has at least two deep grooves extending in a thickness direction for accommodating the protrusion.   4. The stator holding device according to claim 3, wherein one of the deep grooves is formed at an end of two adjacent arcuate bases connected by the connecting means. 5.   The groove surfaces that define the deep grooves formed at the ends of the two arcuate bases are deeper groove surfaces at both ends in the extending direction of the deep grooves than the central portion, and 5. The stator holding device according to claim 4, wherein the deep groove surface cannot be brought into contact with both end portions in the axial direction of the outer peripheral surface of the protrusion of the stator core.   The stator holding device according to claim 1, wherein at least a portion of the arcuate base that is in contact with the stator core is formed of a synthetic resin.   The stator holding device according to claim 1, wherein the arcuate base portion closed in a ring shape has a pair of engaging pins projecting in the outer circumferential direction at mutually facing portions.   The stator holding device according to claim 7, wherein the pair of engaging pins are coaxial with a line passing through the center of gravity while holding the stator core.   The stator holding device according to claim 7, wherein the set of engaging pins is detachable from the arcuate base, and at least two types of pins having different lengths are prepared.   The stator holding device according to claim 7, further comprising lifting means having a pair of hooks respectively engaged with the pair of engaging pins.   The stator holding device according to claim 10, wherein each of the pair of hooks is suspended by a bendable suspension member.   The stator holding device according to claim 11, wherein the suspension member is linear.

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