CN216462887U - Assembling device for synchronous motor bearing - Google Patents

Abstract

The utility model discloses an assembling device of a synchronous motor bearing, which comprises a motor rotor positioning module and a motor bearing positioning and pressing module; the motor rotor positioning module comprises a rotor positioning seat; the top of the rotor positioning seat is provided with a rotor positioning groove; the left side and the right side of the rotor positioning groove are respectively provided with a rotor positioning sheet; the rotor positioning groove is used for placing the lower part of the motor rotor; a rotor shaft transversely penetrates through the center of the motor rotor; a bearing needing to be pressed is respectively arranged on the outer walls of the left end and the right end of the rotor shaft; a first hydraulic cylinder is arranged right above the motor rotor; a motor rotor fixing cylinder is arranged at the lower part of the first hydraulic cylinder; the first hydraulic cylinder is used for driving the motor rotor fixing cylinder to be in abutting contact with the upper part of the motor rotor; and the motor bearing positioning and press-fitting module is used for press-fitting the two bearings to the left side and the right side of the motor rotor. The utility model can safely and reliably carry out press mounting and dismounting operations on the bearing, ensure the working quality and improve the working efficiency.

Description

Assembling device for synchronous motor bearing

Technical Field

The utility model relates to the technical field of machining, in particular to an assembling device for a synchronous motor bearing.

Background

At present, when the existing special equipment for the pre-curing furnace works, a synchronous motor on the special equipment performs uniform-speed rotation motion at a constant speed. In order to ensure that the rotor of the solidified specific part can uniformly and stably rotate, the synchronous motor needs to be ensured to uniformly and stably rotate, and the problems of bearing blocking, uneven rotation and the like of the synchronous motor cannot occur.

In the use, because synchronous machine bearing can appear wearing and tearing to can lead to the motor card to die or rotatory uneven, make specific part rotor solidification inhomogeneous, influence the quality of product, therefore need in time change synchronous machine bearing.

At present, the synchronous motor bearing is usually disassembled and pressed in a manual mode, the mode is time-consuming and labor-consuming (generally, the time-consuming time is about 20 minutes), the working efficiency is low, and in the disassembling and pressing process, a rotor shaft and a bearing of the synchronous motor are sometimes damaged due to uneven stress.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an assembling device of a synchronous motor bearing, aiming at the technical defects in the prior art.

Therefore, the utility model provides an assembling device of a synchronous motor bearing, which comprises a motor rotor positioning module and a motor bearing positioning and press-mounting module;

the motor rotor positioning module comprises a rotor positioning seat;

rotor positioning grooves which are transversely distributed are arranged at the top of the rotor positioning seat;

the left side and the right side of the rotor positioning groove are respectively provided with a rotor positioning sheet which is vertically distributed;

the rotor positioning groove is used for placing the lower part of the motor rotor which is transversely distributed;

a rotor shaft transversely penetrates through the center of the motor rotor;

the outer walls of the left end and the right end of the rotor shaft are respectively provided with a bearing to be pressed;

a first hydraulic cylinder which is vertically distributed is arranged right above the motor rotor;

a motor rotor fixing cylinder is arranged on a piston rod arranged at the lower part of the first hydraulic cylinder;

the lower part of the motor rotor fixing cylinder is provided with rotor positioning grooves distributed in an arc shape;

the first hydraulic cylinder is used for driving the motor rotor fixing cylinder to vertically move downwards, so that a rotor positioning groove of the motor rotor fixing cylinder is tightly propped against the upper part of the motor rotor, and the positioning constraint of the motor rotor in the vertical direction is realized;

and the motor bearing positioning and press-fitting module is used for pushing the two bearings positioned at the left end and the right end of the rotor shaft towards the direction of the motor rotor so that the two bearings are pressed and fitted to the left side and the right side of the motor rotor.

Preferably, the motor bearing positioning and press-fitting module specifically comprises: the second hydraulic cylinder and the third hydraulic cylinder are symmetrically distributed at left and right;

the second hydraulic cylinder and the third hydraulic cylinder are respectively positioned on the right left side and the right side of the rotor positioning seat;

a bearing press-fitting block is respectively arranged on the piston rods at the opposite sides of the second hydraulic cylinder and the third hydraulic cylinder;

one side of each of the two bearing press-fitting blocks, which is opposite to the other side, is provided with a bearing accommodating groove;

the bearing accommodating groove is used for accommodating the radial peripheral outer wall of the bearing in a semi-embedded manner;

the center of each bearing press-mounting block is provided with a rotor shaft insertion through hole which is transversely distributed;

the rotor shaft is inserted into the through hole and communicated with the bearing accommodating groove;

and the two bearing press-fitting blocks are respectively used for relatively moving under the driving of the second hydraulic cylinder and the third hydraulic cylinder, and pushing the two bearings positioned at the left end and the right end of the rotor shaft towards the direction of the motor rotor so that the two bearings are pressed and fitted to the left side and the right side of the motor rotor.

Preferably, the rotor positioning seat is positioned in the transverse middle position of the second hydraulic cylinder and the third hydraulic cylinder;

for the motor rotor positioning module, the rotor positioning groove is a groove with a U-shaped longitudinal section.

Preferably, the outer side end of each bearing press-fitting block is respectively provided with a threaded connecting hole of a piston rod of a hydraulic cylinder;

the two hydraulic cylinder piston rod threaded connecting holes are respectively in threaded connection with the piston rods of the second hydraulic cylinder and the third hydraulic cylinder;

the central axis of the threaded connection hole of the piston rod of the hydraulic cylinder, the central axis of the rotor shaft insertion through hole and the central axis of the bearing accommodating groove are positioned on the same straight line.

Preferably, when it is required to disassemble the bearings which have been press-fitted to the left and right ends of the rotor shaft, the present invention further comprises: two bearing disassembly modules;

each bearing disassembling module adopts a detachable structure and is used for being simultaneously arranged on the radial peripheral outer wall of one bearing which is subjected to press mounting operation and the radial peripheral outer wall of one bearing press mounting block in the motor bearing positioning press mounting module;

the two bearing disassembling modules are distributed in bilateral symmetry.

Preferably, for the motor bearing positioning and press-mounting module, the two bearing press-mounting blocks are provided with a limiting ring and a disassembling module limiting groove at opposite sides in a surrounding manner;

the bearing accommodating groove is positioned in the center of the limiting ring;

the disassembly module limiting groove is positioned on the outer side of the limiting ring;

in each bearing disassembling module, a limiting butt joint groove, a limiting ring accommodating groove, a bearing butt joint limiting groove and a rotor shaft through hole which are communicated with each other are sequentially arranged from outside to inside;

when the bearing disassembly module is arranged on the radial peripheral outer walls of the bearing press-fitting block and the bearing, the limiting butt-joint groove is used for butt-joint the disassembly module limiting groove in the bearing press-fitting block, the limiting ring accommodating groove is used for accommodating the limiting ring, the bearing butt-joint limiting groove is used for accommodating the radial peripheral outer wall of the bearing in a semi-embedded mode, and the rotor shaft through hole is used for penetrating through the rotor shaft.

Preferably, the diameter of the bearing butt joint limiting groove is larger than that of the through hole of the rotor shaft and smaller than that of the limiting ring accommodating groove;

the caliber of the through hole of the rotor shaft is smaller than the outer diameter of the bearing inner ring in the bearing and larger than the inner diameter of the bearing inner ring in the bearing.

Preferably, the limiting butt-joint groove, the limiting ring accommodating groove, the bearing butt-joint limiting groove and the rotor shaft through hole are located on the same central axis.

Preferably, the bearing disassembling module comprises two parts, namely a first sub disassembling module and a second sub disassembling module;

the first sub-disassembly module and the second sub-disassembly module are the same in shape and size;

the two ends of one side, opposite to the first sub-disassembly module and the second sub-disassembly module, are respectively connected through a fixing bolt.

Preferably, the rotor positioning seat in the motor rotor positioning module is positioned at the top of one main body frame;

the motor bearing positioning and press-mounting module is positioned at the top of the main body frame;

the left end and the right end of the top of the main body frame are also connected with the lower parts of the left end and the right end of an auxiliary frame;

the first hydraulic cylinder is arranged at the transverse middle position of the auxiliary frame;

the top of the auxiliary frame is provided with transversely distributed gaps;

a piston rod at the lower part of the first hydraulic cylinder vertically penetrates through the gap;

and the cylinder body of the first hydraulic cylinder is arranged at the transverse middle position of the auxiliary frame.

Compared with the prior art, the assembling device for the synchronous motor bearing provided by the utility model has the advantages that the structural design is scientific, the press-fitting operation can be safely and reliably carried out on the synchronous motor bearing, the working quality of the press-fitting of the synchronous motor bearing is ensured, the press-fitting efficiency is improved, the labor intensity of workers is reduced, and the assembling device has great practical significance.

In addition, the utility model can also conveniently and reliably disassemble the synchronous motor bearing, improve the press mounting efficiency and further reduce the labor intensity of workers.

Drawings

Fig. 1 is a schematic perspective view of an assembling apparatus for a synchronous motor bearing according to the present invention;

fig. 2a is a schematic structural diagram of a bearing and a motor rotor which need to be pressed or disassembled according to the assembling device for a synchronous motor bearing provided by the utility model;

FIG. 2b is a schematic structural diagram of a synchronous motor bearing assembling apparatus according to the present invention, illustrating a bearing to be assembled or disassembled;

FIG. 2c is a schematic structural view of a synchronous motor bearing assembling apparatus of the present invention, in which a bearing to be press-fitted or disassembled is removed from a bearing holder;

fig. 3a is a schematic perspective view of a rotor positioning seat in a motor rotor positioning module in the assembling device for a synchronous motor bearing according to the present invention;

fig. 3b is a schematic view of a three-dimensional structure of a motor rotor placed on a rotor positioning seat in a motor rotor positioning module in the assembling device for a synchronous motor bearing according to the present invention;

fig. 4a is a schematic diagram of a position relationship between a first hydraulic cylinder located right above a rotor positioning seat in a motor rotor positioning module and a motor rotor fixing cylinder and the rotor positioning seat in the assembling device for a synchronous motor bearing provided by the utility model;

fig. 4b is a schematic cross-sectional structural view of a motor rotor fixing cylinder connected to a first hydraulic cylinder located right above a rotor positioning seat in a motor rotor positioning module in the assembling device for a synchronous motor bearing according to the present invention;

fig. 5 is a schematic perspective view of a motor bearing positioning and press-fitting module including a second hydraulic cylinder, a third hydraulic cylinder and a bearing press-fitting block in the assembling apparatus for a synchronous motor bearing according to the present invention;

fig. 6a is a schematic perspective view of a left bearing press-fitting block in a motor bearing positioning press-fitting module in the apparatus for assembling a synchronous motor bearing according to the present invention; the bearing press-mounting blocks on the left side and the right side have the same shape and structure and are only distributed in a left-right symmetrical manner;

fig. 6b is a schematic axial sectional structure diagram of a left bearing press-fitting block in a motor bearing positioning press-fitting module in the assembling device for a synchronous motor bearing provided by the present invention; the bearing press-mounting blocks on the left side and the right side have the same shape and structure and are only distributed in a bilateral symmetry way

Fig. 7a is a schematic perspective view of a first sub-disassembly module in a left bearing disassembly module in the assembly apparatus for a synchronous motor bearing provided by the present invention; the first sub-disassembly module and the second sub-disassembly module in the bearing disassembly module have the same shape and structure and are only distributed in a front-back symmetrical mode;

FIG. 7b is a right side view of a bearing removing module positioned on the left side in the assembling apparatus for a synchronous motor bearing according to the present invention; the bearing disassembling modules on the left side and the right side have the same structure and are only symmetrically distributed;

fig. 7c is a schematic structural diagram of a front end surface of a first sub-disassembly module located at a rear side position in a left bearing disassembly module in the assembling device of a synchronous motor bearing provided by the utility model; the first sub-disassembly module and the second sub-disassembly module have the same structure and are only symmetrically distributed;

FIG. 8 is a schematic diagram of the position relationship between the motor bearing positioning and press-fitting module including the second hydraulic cylinder, the third hydraulic cylinder and the bearing press-fitting block, and the motor rotor positioning module of the assembling apparatus for the synchronous motor bearing according to the present invention

Fig. 9 is a schematic perspective view of the assembling apparatus for a synchronous motor bearing according to the present invention, when the motor bearing positioning and press-fitting module including the second hydraulic cylinder, the third hydraulic cylinder, and the bearing press-fitting block is installed with the bearing detaching module.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 9, the present invention provides an assembling device for a synchronous motor bearing, which is applied to a bearing disassembling and press-fitting process of a low-speed permanent magnet synchronous motor, and specifically comprises: the motor rotor positioning module 100 and the motor bearing positioning and press-fitting module 200;

the motor rotor positioning module 100 comprises a rotor positioning seat 101;

the top of the rotor positioning seat 101 is provided with rotor positioning grooves 102 which are transversely distributed;

the left side and the right side of the rotor positioning groove 102 are respectively provided with a rotor positioning sheet 103 which is vertically distributed;

a rotor positioning groove 102 for placing the lower part (specifically, the lower half part) of the motor rotor 2 (the outer contour of which is cylindrical) which is transversely distributed;

a rotor shaft 20 transversely penetrates through the center of the motor rotor 2;

the outer walls of the left end and the right end of the rotor shaft 20 are respectively provided with a bearing 1 to be pressed (at this time, the two bearings 1 are only sleeved at the end parts of the left end and the right end of the rotor shaft 20 by workers, and the two bearings 1 can be bearings with the same size or bearings with different sizes and specifications);

a first hydraulic cylinder 104 which is vertically distributed is arranged right above the motor rotor 2;

a motor rotor fixing cylinder 105 (for example, a screw connection) is provided on a piston rod provided at a lower portion of the first hydraulic cylinder 104;

the lower part of the motor rotor fixing cylinder 105 is provided with a rotor positioning groove 1050 which is distributed in an arc shape;

the first hydraulic cylinder 104 is configured to drive the motor rotor fixing cylinder 105 to move vertically downward, so that the rotor positioning groove 1050 of the motor rotor fixing cylinder 105 is in abutting contact with the upper portion of the motor rotor 2 (which is cylindrical as a whole), and positioning constraint on the motor rotor 2 in the vertical direction is achieved.

It should be noted that the shape and size of the rotor positioning groove 1050 are matched with the shape and size of the upper part of the motor rotor 2.

It should be noted that, after the motor rotor 2 is positioned in the rotor positioning groove 1050 (for example, a U-shaped groove), the motor rotor 2 is vertically fixed by the motor rotor fixing cylinder 105 in the vertical direction.

The motor bearing positioning and press-fitting module 200 is configured to push the two bearings 1 located at the left and right ends of the rotor shaft 20 toward the motor rotor 2, so that the two bearings 1 are press-fitted to the left and right sides of the motor rotor 2.

In the present invention, in a specific implementation, the motor bearing positioning and press-fitting module 200 specifically includes: a second hydraulic cylinder 201 and a third hydraulic cylinder 202 which are symmetrically distributed;

the second hydraulic cylinder 201 and the third hydraulic cylinder 202 are respectively positioned on the right left side and the right side of the rotor positioning seat 101;

a bearing press-fitting block 203 is respectively arranged on the piston rods (namely the output ends) at the opposite sides of the second hydraulic cylinder 201 and the third hydraulic cylinder 202;

the opposite sides (i.e., the sides facing the rotor) of the two bearing press-fitting blocks 203 are respectively provided with a bearing accommodating groove 2031;

it should be noted that the two bearing press-fitting blocks 203 have the same shape and structure, and are only distributed in a left-right symmetrical manner.

A bearing receiving groove 2031 for receiving a radially peripheral outer wall of the bearing 1 in a half-insertion manner (for example, only the bearing 1 inserted in a half);

it should be noted that the bearing 1 and the bearing receiving groove 2031 are in clearance fit, that is, the size of the outer bearing ring 2001 of the bearing 1 is slightly smaller than the size of the bearing receiving groove 2031.

A rotor shaft insertion through hole 2032 is formed in the center of each bearing press-fitting block 203 and distributed transversely;

the rotor shaft is inserted into the through hole 2032 and communicated with the bearing receiving groove 2031;

the two bearing press-fitting blocks 203 are respectively used for relatively moving under the driving of the second hydraulic cylinder 201 and the third hydraulic cylinder 202, and pushing the two bearings 1 located at the left and right ends of the rotor shaft 20 towards the direction (i.e. the inner side direction) of the motor rotor 2, so that the two bearings 1 are pressed to the left and right sides of the motor rotor 2, and the press-fitting operation is completed.

In the present invention, in a specific implementation, the rotor positioning seat 101 is located at a transverse middle position of the second hydraulic cylinder 201 and the third hydraulic cylinder 202;

in the utility model, in specific implementation, the outer end (i.e. the end far away from the motor rotor 2) of each bearing press-fitting block 203 is respectively provided with a hydraulic cylinder piston rod threaded connection hole 204;

the two cylinder rod threaded holes 2033 are respectively in threaded connection with the piston rods (with external threads) of the second hydraulic cylinder 201 and the third hydraulic cylinder 202.

In concrete implementation, the central axis of the threaded connection hole 2033 of the piston rod of the hydraulic cylinder is aligned with the central axis of the rotor shaft insertion through hole 2032 and the central axis of the bearing receiving groove 2031.

In the present invention, the shape of the longitudinal section of the motor rotor 2 is circular in a concrete implementation.

In the present invention, in a specific implementation, for the motor rotor positioning module 100, the rotor positioning slot 102 therein is a groove with a U-shaped longitudinal cross section.

The purpose of positioning the motor rotor 2 is to eliminate manual holding operation of the two bearings 1 during manual disassembly and assembly, so that the motor rotor and the two bearings are kept coaxial, and automatic operation of subsequent bearing disassembly and assembly is realized.

For the motor rotor 2, the outer contour of the motor rotor is cylindrical, and a U-shaped groove positioning method is selected in consideration of the factors that a positioning device of the motor rotor is required to be convenient to manufacture, convenient to operate and the like. Simultaneously, in order to increase the fixing effect on the motor rotor, two rotor positioning pieces are additionally arranged.

In the present invention, it should be noted that the bearing 1 includes a bearing outer ring 2001, a bearing inner ring 2002 and a bearing retainer 2003;

a bearing retainer 2003 is located at a position between the bearing outer ring 2001 and the bearing inner ring 2002.

It should be noted that the bearing 1 is an existing bearing, and the above structural design thereof is an existing conventional structural design, and will not be described herein again.

In the present invention, in concrete implementation, when it is required to disassemble the bearings 1 that have been press-fitted to the left and right ends of the rotor shaft 20, the present invention further includes: two bearing removal modules 300;

each bearing detaching module 300 is detachably mounted on (i.e., sleeved on) the radially peripheral outer wall of one bearing 1 which has completed the press-fitting operation, and the radially peripheral outer wall of one bearing press-fitting block 203 in the motor bearing positioning press-fitting module 200;

the two bearing detaching modules 300 are distributed symmetrically left and right. The two bearing detaching modules 300 have the same shape and structure, and are symmetrically distributed.

In particular, for the motor bearing positioning and press-fitting module 200, the two bearing press-fitting blocks 203 are provided with a limiting ring 2034 and a disassembling module limiting groove 2035 at opposite sides in a surrounding manner;

a bearing receiving groove 2031 located at the center of the stop collar 2034;

a disassembly module limiting groove 2035 located outside the limiting ring 2034 (i.e., on the side away from the motor rotor 2);

in each bearing dismounting module 300, a limiting butt-joint groove 301, a limiting ring accommodating groove 302, a bearing butt-joint limiting groove 303 and a rotor shaft through hole 304 which are communicated with each other are sequentially arranged from outside to inside (namely, the distance from the bearing dismounting module to the motor rotor 2 is from far to near);

when the bearing dismounting module 300 is installed on the bearing press-fitting block 203 and the radial peripheral outer wall of the bearing 1, the limiting butt-joint groove 301 is used for butt-joint with the dismounting module limiting groove 2035 in the bearing press-fitting block 203, the limiting ring accommodating groove 302 is used for accommodating the limiting ring 2034, the bearing butt-joint limiting groove 303 is used for semi-embedded accommodating the radial peripheral outer wall of the bearing 1 (namely, the bearing accommodating groove 2031 accommodates other parts which are not accommodated), and the rotor shaft through hole 304 is used for penetrating through the rotor shaft 20.

In a specific implementation, the diameter of the bearing butt joint limiting groove 303 is greater than the diameter of the rotor shaft through hole 304 and smaller than the diameter of the limiting ring accommodating groove 302, therefore, when half of the bearing 1 is located in the bearing butt joint limiting groove 303 in the bearing disassembling module 300 and the other half is located in the bearing accommodating groove 2031 in the bearing press-fitting block 203, two sides of the bearing 1 are limited to the position between the rotor shaft inserting through hole 2032 in the bearing press-fitting block 203 and the rotor shaft through hole 304 in the bearing disassembling module 300, therefore, when the bearing press-fitting block 203 and the bearing disassembling module 300 are driven by the second hydraulic cylinder or the third hydraulic cylinder to move in a direction (i.e., an outer direction and an opposite direction) away from the motor rotor, the bearing 1 can be driven together, so that the bearing 1 gradually moves in an outer direction on the rotor shaft 20, thereby realizing the disassembling function of the bearing 1.

In a specific implementation, the shape and size of the bearing butt joint limiting groove 303 are matched with the shape and size of the bearing outer ring 2001 in the bearing 1 correspondingly, for example, equal to or slightly larger than the shape and size of the bearing outer ring 2001 in the bearing 1.

Specifically, in order to apply a thrust to the inner side surface of the bearing inner ring 2002 of the bearing 1, so that the bearing inner ring 2002 is stressed, the caliber (diameter) of the rotor shaft through hole 304 is smaller than the outer diameter of the bearing inner ring 2002 and larger than the inner diameter of the bearing inner ring 2002, for example, equal to the inner diameter of bearing inner ring 200 and one-half the bearing inner ring thickness (i.e., one-half the annular arc spacing), and, therefore, the bearing 1 may be blocked from the inside direction, and when the bearing-detaching module 300 is moved away from the rotor of the motor (i.e., the outside direction), the inner side wall of the bearing butt joint limiting groove 303 can apply thrust to the inner side surface of the bearing inner ring 2002 of the bearing 1, and simultaneously, thrust is applied to the inner side surface of the bearing outer ring 2001 and the inner side surface of the bearing retainer 2003 in the bearing 1, so that the uniform stress of the bearing 1 is ensured, and the damage of the bearing due to uneven stress is effectively avoided.

In the present invention, since the contour thickness of the bearing inner ring is usually narrow (for example, only 3mm) and the bearing inner ring is forced when the bearing is disassembled and assembled, the bearing 1 is assembled and disassembled with the grooves (i.e., the bearing receiving groove 2031 and the bearing butt joint limiting groove 303) that are matched with the bearing inner ring, and the bearing is coaxially maintained with the rotor shaft during the assembling and disassembling process by adjusting the level and height of the second hydraulic cylinder and the third hydraulic cylinder for assembling and disassembling. Meanwhile, when the bearing is disassembled and assembled, the small distance (for example, only 12mm) between the bearing and the motor rotor is considered, so that after the positioning is finished, a moving mechanism is correspondingly designed through the second hydraulic cylinder and the third hydraulic cylinder, and the positioning tool (namely the bearing press-fitting block 203) is pressed or moved out, so that the press-fitting and the disassembly of the bearing are finished.

In specific implementation, the limit butting groove 301, the limit ring accommodating groove 302, the bearing butting limit groove 303 and the rotor shaft through hole 304 are located on the same central axis.

In a specific implementation, the bearing disassembly module 300 includes two parts, namely a first sub disassembly module 3001 and a second sub disassembly module 3002;

the first sub disassembly module 3001 and the second sub disassembly module 3002 have the same shape and size;

two ends of one side of the first sub-disassembly module 3001, which are opposite to the second sub-disassembly module 3002, are respectively connected through a fixing bolt;

it should be noted that the opposite sides of the first sub-disassembly module 3001 and the second sub-disassembly module 3002 are provided with screw coupling holes 3003 for screw coupling of the fixing bolts.

In the present invention, in a specific implementation, referring to fig. 1, a rotor positioning seat 101 in a motor rotor positioning module 100 is located at the top of a main frame 1000;

the motor bearing positioning and press-fitting module 200 is positioned at the top of the main body frame 1000;

the left and right ends of the top of the main body frame 1000 are connected to the lower parts of the left and right ends of an auxiliary frame 2000;

a first hydraulic cylinder 104 installed at a widthwise middle position of the auxiliary frame 2000;

the top of the auxiliary frame 2000 is provided with transversely distributed gaps;

the piston rod at the lower part of the first hydraulic cylinder 104 vertically penetrates through the gap.

In the present invention, the cylinder body of the first hydraulic cylinder 104 is installed at a laterally intermediate position of the auxiliary frame 2000.

It should be noted that, for the present invention, the main body frame 1000 has three supporting electrical control boxes and hydraulic oil circuit assemblies of the hydraulic cylinders at the position below the motor bearing positioning and press-fitting module 200, and the supporting electrical control boxes and hydraulic oil circuit assemblies of the existing common hydraulic cylinders can be adopted, which is a conventional technology and will not be described herein again.

In the present invention, for the motor bearing positioning and press-fitting module 200, the bearing accommodating grooves 2031 in the two bearing press-fitting blocks 203 are grooves with the same size as the outer diameter and the inner diameter of the bearing 1, so as to realize the positioning of the bearing 1 and the rotor shaft. The outer end of the bearing press-fitting block 203 is a threaded connection part (i.e., a threaded connection hole of a piston rod of the hydraulic cylinder) connected with the hydraulic cylinder, so as to realize the moving-out action of the hydraulic cylinder. When the inner ring of the bearing is contacted with the outer wall of the rotor shaft, the bearing can be pushed to move on the rotor shaft through the hydraulic cylinder, and therefore the press-fitting operation of the bearing is completed.

In the present invention, for the bearing detaching module 300, the inner side end facing the motor rotor is a groove (i.e. bearing butt joint limiting groove 303) butted with the bearing outer ring, and the outer side end far away from the motor rotor is installed in cooperation with the outer circular groove (i.e. detaching module limiting groove 2035 in the bearing press-fitting block 203) in the motor bearing positioning press-fitting module 200, and is installed by a fast-assembling fixing bolt. In order to facilitate the mounting of the bearing disassembly module 300 on the bearing, a manner in which the bearing disassembly module 300 is provided in half (including two parts of the first sub disassembly module 3001 and the second sub disassembly module 3002) is used. After the rotor shaft 20 is fixed, the hydraulic cylinder is moved to the dismounting position, the bearing dismounting module 300 is mounted to the position, and the hydraulic cylinder is controlled to be retracted, so that the bearings are dismounted at two ends of the rotor shaft simultaneously.

In the present invention, the motor bearing positioning and press-fitting module 200 (as a bearing press-fitting tool) can provide support for the bearing during press-fitting and perform press-fitting operation during bearing assembly.

It should be noted that the motor rotor is of a symmetrical structure, and when the two bearings are press-fitted, if the lengths of the rotor shaft 20 on the left and right sides of the motor rotor 2 are not the same, the second hydraulic cylinder and the third hydraulic cylinder can apply different pushing speeds (pushing speed in the direction close to the motor rotor 2) to the motor bearing positioning and press-fitting module 200 on the rotor shaft 20 and the bearings connected thereto, so that the two bearings can simultaneously complete the press-fitting operation on the left and right side walls of the motor rotor 2.

Similarly, when two bearings are disassembled, if the lengths of the rotor shaft 20 at the left and right sides of the motor rotor 2 are not the same, the second hydraulic cylinder and the third hydraulic cylinder can apply different pushing speeds (pushing speeds in the direction away from the motor rotor 2) to the motor bearing positioning and press-fitting module 200 on the rotor shaft 20 and the bearing and bearing disassembling module 300 connected thereto, so that the two bearings can be disassembled at the same time.

It should be noted that, for the present invention, the bearing dismounting and press mounting are in a left-right symmetrical layout. Mainly, the hydraulic cylinder adopts symmetrical layout. The front bearing and the rear bearing are symmetrically arranged left and right to be assembled, disassembled and pressed. The symmetrical structure effectively ensures the synchronization of the left and right dismounting strokes. Meanwhile, the stroke of the left hydraulic cylinder and the right hydraulic cylinder and the specific position of the limit switch are reasonably determined, and the bearing is guaranteed to be disassembled and pressed in place.

For the present invention, a hydraulic transmission structure is adopted. The hydraulic cylinders in the vertical direction are used for fixing the motor rotor, and the hydraulic cylinders arranged on the left side and the right side of the motor rotor are used for disassembling and press-fitting the bearing. The hydraulic transmission has the advantages of stability, higher precision and simple structure.

It should be noted that, for the present invention, it is applied to the bearing dismounting and press-fitting process of the low-speed permanent magnet synchronous motor, the working parts of the device are arranged in bilateral symmetry, and the special positioning, dismounting and mounting tools are designed and manufactured, the hydraulic cylinder is used as the executing element, the positioning of the motor rotor in the U-shaped groove can be realized through the hydraulic oil circuit and the electric control, and the bilateral synchronization in the dismounting and mounting processes of the two bearings can be realized, so that the automatic dismounting and mounting of the motor bearing can be realized.

In the concrete implementation of the utility model, the motor rotor is placed in the U-shaped groove for positioning, the two bearings are respectively placed on the bearing positioning shaft, and the starting button is pressed down, so that the device automatically presses and assembles the two bearings in place.

In order to more clearly understand the technical scheme of the utility model, the following describes the main operation process of the utility model:

firstly, putting a motor rotor 2 into a rotor positioning seat 101 in a motor rotor positioning module 100;

then, the first hydraulic cylinder 104 drives the motor rotor fixing cylinder 105 downwards, and the motor rotor fixing cylinder 105 tightly pushes and contacts the upper part of the motor rotor 2 (which is cylindrical as a whole), so that the positioning constraint of the motor rotor 2 in the vertical direction is realized;

then, the second hydraulic cylinder 201 and the third hydraulic cylinder 202 in the motor bearing positioning and press-fitting module 200 are started, and the two bearing press-fitting blocks 203 connected to the second hydraulic cylinder 201 and the third hydraulic cylinder 202 move relatively by controlling the strokes of the second hydraulic cylinder 201 and the third hydraulic cylinder 202, so that the two bearing press-fitting blocks 203 respectively push the bearings 1 on the left and right ends of the rotor shaft 20, and finally the bearings 1 are press-fitted to the left and right sides of the motor rotor 2.

When two bearings need to be disassembled, the bearing disassembling module 300 is installed outside the bearing press-fitting block 203 and the bearings, at this time, the second hydraulic cylinder 201 and the third hydraulic cylinder 202 drive the bearing disassembling module 300, and the bearing disassembling module 300 drives the bearings 1 to move towards the outer side direction far away from the motor rotor 2, so that the disassembling operation of the two bearings 1 can be completed.

Compared with the prior art, the assembling device for the synchronous motor bearing provided by the utility model has the advantages that the structural design is scientific, the press-fitting operation can be safely and reliably carried out on the synchronous motor bearing, the press-fitting working quality of the synchronous motor bearing is ensured, the press-fitting efficiency is improved, the labor intensity of workers is reduced, and the assembling device has great practical significance.

In addition, the utility model can also conveniently and reliably disassemble the synchronous motor bearing, improve the press mounting efficiency and further reduce the labor intensity of workers.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. The assembling device of the synchronous motor bearing is characterized by comprising a motor rotor positioning module (100) and a motor bearing positioning and press-mounting module (200);

the motor rotor positioning module (100) comprises a rotor positioning seat (101);

the top of the rotor positioning seat (101) is provided with rotor positioning grooves (102) which are transversely distributed;

the left side and the right side of the rotor positioning groove (102) are respectively provided with a rotor positioning sheet (103) which is vertically distributed;

the rotor positioning groove (102) is used for placing the lower part of the motor rotor (2) which is transversely distributed;

a rotor shaft (20) transversely penetrates through the center of the motor rotor (2);

the outer walls of the left end and the right end of the rotor shaft (20) are respectively provided with a bearing (1) to be pressed;

a first hydraulic cylinder (104) which is vertically distributed is arranged right above the motor rotor (2);

a motor rotor fixing cylinder (105) is arranged on a piston rod arranged at the lower part of the first hydraulic cylinder (104);

the lower part of the motor rotor fixing cylinder (105) is provided with rotor positioning grooves (1050) distributed in a circular arc shape;

the first hydraulic cylinder (104) is used for driving the motor rotor fixing cylinder (105) to vertically move downwards, so that the rotor positioning groove (1050) of the motor rotor fixing cylinder (105) is tightly propped and contacted with the upper part of the motor rotor (2), and the positioning constraint of the motor rotor (2) in the vertical direction is realized;

the motor bearing positioning and press-fitting module (200) is used for pushing the two bearings (1) positioned at the left end and the right end of the rotor shaft (20) towards the motor rotor (2) so that the two bearings (1) are pressed and fitted to the left side and the right side of the motor rotor (2).

2. The assembling apparatus of the synchronous motor bearing according to claim 1, wherein the motor bearing positioning press-fitting module (200) specifically comprises: the second hydraulic cylinder (201) and the third hydraulic cylinder (202) are distributed in bilateral symmetry;

the second hydraulic cylinder (201) and the third hydraulic cylinder (202) are respectively positioned on the right left side and the right side of the rotor positioning seat (101);

a bearing press-fitting block (203) is respectively arranged on the piston rods at the opposite sides of the second hydraulic cylinder (201) and the third hydraulic cylinder (202);

one side of each of the two bearing press-fitting blocks (203) opposite to each other is provided with a bearing accommodating groove (2031);

the bearing accommodating groove (2031) is used for accommodating the radial peripheral outer wall of the bearing (1) in a semi-embedded manner;

the center position of each bearing press-fitting block (203) is provided with a rotor shaft insertion through hole (2032) which is distributed transversely;

a rotor shaft insertion through hole (2032) communicating with the bearing accommodation groove (2031);

the two bearing press-fitting blocks (203) are respectively used for being driven by the second hydraulic cylinder (201) and the third hydraulic cylinder (202) to move relatively, and the two bearings (1) located at the left end and the right end of the rotor shaft (20) are pushed towards the direction of the motor rotor (2), so that the two bearings (1) are pressed and fitted to the left side and the right side of the motor rotor (2).

3. The assembling apparatus for a synchronous motor bearing according to claim 2, wherein the rotor positioning seat (101) is located at a position laterally intermediate the second hydraulic cylinder (201) and the third hydraulic cylinder (202);

for the motor rotor positioning module (100), the rotor positioning groove (102) is a groove with a U-shaped longitudinal section.

4. The assembling device for the synchronous motor bearing according to claim 2, wherein the outer side end of each bearing press-fitting block (203) is provided with a hydraulic cylinder piston rod screw-thread connecting hole (204), respectively;

two hydraulic cylinder piston rod threaded connection holes (2033) which are respectively in threaded connection with the piston rods of the second hydraulic cylinder (201) and the third hydraulic cylinder (202);

the central axis of the threaded connection hole (2033) of the piston rod of the hydraulic cylinder is positioned on the same straight line with the central axis of the rotor shaft insertion through hole (2032) and the central axis of the bearing accommodating groove (2031).

5. The assembling apparatus of synchronous motor bearings according to claim 2, wherein when it is required to disassemble the bearings (1) press-fitted to both left and right ends of the rotor shaft (20), the present invention further comprises: two bearing disassembly modules (300);

each bearing disassembling module (300) adopts a detachable structure and is used for being simultaneously arranged on the radial peripheral outer wall of one bearing (1) which is subjected to press mounting operation and the radial peripheral outer wall of one bearing press mounting block (203) in the motor bearing positioning press mounting module (200);

the two bearing disassembling modules (300) are distributed in bilateral symmetry.

6. An assembling device of a synchronous motor bearing according to claim 5, characterized in that for the motor bearing positioning press-fitting block (200), two bearing press-fitting blocks (203) are provided with a spacing ring (2034) and a disassembling block spacing groove (2035) circumferentially at opposite sides;

the bearing accommodating groove (2031) is positioned at the center of the limiting ring (2034);

the disassembly module limiting groove (2035) is positioned on the outer side of the limiting ring (2034);

in each bearing dismounting module (300), a limiting butt joint groove (301), a limiting ring accommodating groove (302), a bearing butt joint limiting groove (303) and a rotor shaft through hole (304) which are communicated with each other are sequentially arranged from outside to inside;

when the bearing disassembly module (300) is installed on the radial peripheral outer wall of the bearing press-fitting block (203) and the bearing (1), the limiting butt-joint groove (301) is used for butt-joint the disassembly module limiting groove (2035) in the bearing press-fitting block (203), the limiting ring accommodating groove (302) is used for accommodating the limiting ring (2034), the bearing butt-joint limiting groove (303) is used for semi-embedded radial peripheral outer wall accommodating the bearing (1), and the rotor shaft through hole (304) is used for penetrating through the rotor shaft (20).

7. The assembling device of the synchronous motor bearing according to claim 5, wherein the diameter of the bearing butt-joint limiting groove (303) is larger than the diameter of the rotor shaft through hole (304) and smaller than the diameter of the limiting ring receiving groove (302);

the caliber of the rotor shaft through hole (304) is smaller than the outer diameter of the bearing inner ring (2002) in the bearing (1) and larger than the inner diameter of the bearing inner ring (2002) in the bearing (1).

8. The assembling device of the synchronous motor bearing according to claim 5, wherein the limit butting groove (301), the limit ring receiving groove (302), the bearing butting limit groove (303) and the rotor shaft through hole (304) are located on the same central axis.

9. The assembling apparatus of the synchronous motor bearing according to claim 7, wherein the bearing disassembling module (300) comprises two parts of a first sub disassembling module (3001) and a second sub disassembling module (3002);

the first sub disassembly module (3001) and the second sub disassembly module (3002) are the same in shape and size;

two ends of one side, opposite to the first sub-disassembly module (3001) and the second sub-disassembly module (3002), are respectively connected through a fixing bolt.

10. The assembly device of the synchronous motor bearing according to any one of claims 1 to 9, wherein the rotor positioning socket (101) in the motor rotor positioning module (100) is located on top of one main body frame (1000);

the motor bearing positioning and press-fitting module (200) is positioned at the top of the main body frame (1000);

the left end and the right end of the top of the main body frame (1000) are also connected with the lower parts of the left end and the right end of an auxiliary frame (2000);

a first hydraulic cylinder (104) installed at a widthwise middle position of the auxiliary frame (2000);

the top of the auxiliary frame (2000) is provided with transversely distributed gaps;

a piston rod at the lower part of the first hydraulic cylinder (104) vertically penetrates through the gap;

the cylinder body of the first hydraulic cylinder (104) is installed at the lateral middle position of the auxiliary frame (2000).

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