Permanent magnet motor stator mounting device and mounting method

Abstract

The application relates to a permanent magnet motor stator mounting device and a mounting method. The method process is as follows: after the bottom plate is connected with the four support columns, the bottom plate is placed on a horizontal table top; the motor front end cover is positioned and fixed on the upper end of the bottom plate, and a bearing is placed in the bearing hole of the front end cover; one end of a rotor shaft is passed through the inner ring of the bearing and the center hole of the bottom plate, and an open end sleeve is fastened on the lower end of the rotor shaft located on the bottom plate, the open end sleeve is fixedly connected with the lower end of the bottom plate, and the rotor shaft is fixed; the lower end of a guide sleeve is positioned and fixed with the other end of the rotor shaft; the lower end surface of a stator adapter plate is fixedly connected with the stator, and the upper end surface of the stator adapter plate is fixedly connected with the flange part of a sleeve-shaped nut; the lower end surface of a screw rod is vertically placed on the uppermost part of the guide sleeve; after the stator of the motor is slowly sleeved downward on the screw rod, the upper threaded center hole of the sleeve-shaped nut is threadedly connected with the screw rod; the upper end of the screw rod is fixed, the sleeve-shaped nut is rotated, and the stator of the motor is lowered to be in contact with the front end cover until the stator is mounted in place. The application improves the mounting precision and the mounting efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of permanent magnet motor installation, and particularly relates to a permanent magnet motor stator installation device and installation method. BACKGROUND

[0002] As an important executive component in dynamic system, the motor is widely used in various transmission systems. According to the application environment of different systems, the installation mode of the motor on the system is also different. Therefore, the motor can be divided into integral type motor with shaft system and split type motor without shaft system and directly driving the shaft system of the system.

[0003] For general integral type permanent magnet motor, the rotor and the motor shaft are integrated structure, and the stator and the rotor are connected through two bearings. During the motor assembly, due to the existence of permanent magnet and the fact that the stator and the rotor are made of magnetic material,

[0004] If the position is slightly deviated during installation, the stator and the rotor will be attracted together at once, causing damage to the motor parts, thereby leading to unstable motor performance. For general split type permanent magnet motor, the installation during testing will also have the above problems. The traditional assembly mode is low in efficiency and cannot meet the needs of mass production.

[0005] SUMMARY

[0006] The application aims at the deficiencies of the prior art, and provides a permanent magnet motor stator installation device and installation method which can avoid bumping and damaging the bearing during installation, improve installation precision and installation efficiency.

[0007] One of the above purposes of the application is achieved by the following technical scheme:

[0008] A permanent magnet motor stator installation device comprises a bottom plate, a support column, an open sleeve, a screw rod, a sleeve nut, a guide sleeve and a stator adapter plate.

[0009] The support column is a plurality of support columns which are vertically connected to the lower end of the bottom plate, so that the bottom plate is supported at a certain height from the installation table surface.

[0010] The center of the bottom plate is provided with a center hole through which one end of the rotor shaft of the motor passes and realizes axial and radial positioning; the upper end of the bottom plate is provided with a positioning hole into which the outer end of the front end cover is inserted, and the positioning hole is coaxially arranged with the center hole; an inner and outer thread hole is arranged around the center hole, the inner thread hole is used for fixed installation of the open sleeve, and the outer thread hole is used for fixed installation of the motor front end cover.

[0011] The opening sleeve is arranged at the center of the lower end of the bottom plate, and the opening sleeve is tightly held on the shaft end of the rotor shaft extending from the lower end of the bottom plate through the central hole, so that the rotor shaft is vertically fixed on the bottom plate; the screw through hole corresponding to the threaded hole on the inner ring of the bottom plate is arranged on the opening sleeve, and the opening sleeve is fixed on the bottom plate through the connecting locking screw;

[0012] The lower end of the guide sleeve is positioned and fixedly connected with the other end of the rotor shaft located at the upper portion;

[0013] The screw rod is composed of a threaded rod body part and a disc-shaped rod head part connected to the lower end of the rod body part, the screw rod is coaxially supported on the upper end of the guide sleeve through the disc-shaped rod head part, and the upper end of the screw rod is a clamping fixed end;

[0014] The sleeve nut is composed of a sleeve body part, a sleeve bottom part connected to the upper end of the sleeve body part, and a flange part connected to the lower end of the sleeve body part; the threaded central hole is arranged on the sleeve bottom part, and the threaded central hole is threadedly connected with the rod body part of the screw rod;

[0015] The stator adapter plate adopts a disc structure with a boss arranged at the lower end; the inner ring threaded hole and the outer ring screw through hole are arranged on the stator adapter plate, the inner ring threaded hole corresponds to the screw through hole on the flange part of the sleeve nut, the upper end of the stator adapter plate is fixedly connected with the flange part of the sleeve nut through the screw connected in the inner ring threaded hole, and the lower end of the stator adapter plate is fixedly connected with the motor stator to be installed through the screw installed in the outer ring threaded hole;

[0016] During the installation of the stator, the sleeve body part of the sleeve nut is arranged outside the disc-shaped rod head part of the guide sleeve and the screw rod in a clearance fit manner.

[0017] Moreover, the material of the opening sleeve is brass H62.

[0018] Moreover, the upper end of the screw rod adopts a cubic column structure.

[0019] The second purpose of the present application is achieved by the following technical scheme:

[0020] A method for installing a stator by using the above-mentioned permanent magnet motor stator installation device comprises the following steps:

[0021] Step 1, connect the bottom plate with the four supports and place it on a horizontal table top;

[0022] Step 2, insert the outer end of the motor front end cover into the positioning hole at the upper end of the bottom plate, fix the motor front end cover on the bottom plate by using a screw, and put a bearing into the bearing hole of the front end cover;

[0023] Step 3, the rotor shaft is vertically arranged on the center of the bottom plate through the bearing inner ring and the bottom plate center hole, and the rotor shaft is fixed by sleeving and fastening the upper opening sleeve on the lower end of the bottom plate, and the upper opening sleeve is fixedly connected with the lower end of the bottom plate through threads, so that the rotor shaft is fixed;

[0024] Step 4, the lower end of the guide sleeve is sleeved and matched with the upper end of the rotor shaft, and the screw is used for fixing;

[0025] Step 5, the lower end surface of the stator adapter plate is connected with the stator of the motor through the screw, and the upper end surface of the stator adapter plate is connected with the flange part of the sleeve nut through the screw;

[0026] Step 6, the lower end surface of the screw is vertically arranged on the uppermost of the guide sleeve;

[0027] Step 7, the stator of the motor is slowly sleeved downward through the screw, so that the upper threaded center hole of the sleeve nut is threadedly connected with the screw, then the upper end of the screw is fixed, the sleeve nut is gradually rotated, the stator of the motor is gradually lowered in the rotating process, and the stator of the motor is in contact with the front end cover, so that the stator is installed in place.

[0028] The application has the advantages and positive effects that:

[0029] 1, the motor front end cover and the rotor shaft matched with the motor stator are positioned and fixed through the bottom plate, the support and the opening sleeve, the motor stator is gradually rotated and lowered along the vertical direction for installation through the cooperation of the screw, the sleeve nut, the guide sleeve and the stator adapter plate, the gap between the stator and the rotor shaft is ensured during the installation process through the guide sleeve, the assembly offset is far lower than the gap between the stator and the rotor, so that the bearing is prevented from being damaged due to collision during the installation process, the installation precision and efficiency are improved, and the application is especially suitable for the rapid assembly of small and medium-sized permanent magnet motors.

[0030] 2, the device has the advantages of simple structure, low part processing cost, small occupied space, strong operability and high assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a schematic diagram of the motor stator installation of the application. DETAILED DESCRIPTION

[0032] The structure of the application will be further described below in combination with the drawings and through embodiments. It should be noted that the embodiments are descriptive rather than limiting.

[0033] A permanent magnet motor stator installation device, please refer to Figure 1The function is: the motor stator one end inserted into the motor front end cover on the set position, and in the process of installation, keep the distance between the rotor of the motor. Mainly includes: base plate 6, support 7, open sleeve 8, screw 1, sleeve nut 2, guide sleeve 3, stator adapter plate 4. The base plate, support and open sleeve for the realization of the motor front end cover and rotor shaft positioning and fixing. The screw, sleeve nut, guide sleeve and stator adapter plate for the realization of the motor stator guide installation.

[0034] The center of the base plate is provided with a center hole for the end of the motor rotor shaft to pass through and realize axial and radial positioning, which is a stepped hole with large upper end and small lower end. The upper end of the base plate is provided with a positioning hole for the outer end of the front end cover to be inserted, and the positioning hole is coaxially arranged with the center hole. A peripheral of the center hole is provided with inner and outer two circle threaded holes, the inner circle threaded hole is used to realize the fixed installation of the open sleeve, and the outer circle threaded hole is used to realize the fixation of the motor front end cover.

[0035] The open sleeve is arranged at the center position of the lower end of the base plate, and the open sleeve is tightly held on the shaft end of the rotor shaft extending from the lower end of the base plate through the center hole, so as to realize the axial and radial locking and fixation of the rotor shaft. The open sleeve is provided with a screw through hole corresponding to the threaded hole on the inner circle of the base plate, and the open sleeve is fixed on the base plate by connecting the locking screw.

[0036] The support is a plurality of supports, and the plurality of supports are vertically connected to the lower end of the base plate, so as to make the base plate stand on the installation table surface at a certain height, and provide enough space for the downward extension of the rotor shaft.

[0037] The guide sleeve is the guide basis for the installation of the motor stator, the outer diameter of the guide sleeve matches the inner hole diameter of the stator and the inner cylinder diameter of the sleeve nut, and the lower end of the guide sleeve is positioned and fixedly connected with the other end of the rotor shaft. Specifically, a positioning hole matched in shape with the other end of the rotor shaft is arranged at the lower end of the lower end of the guide sleeve, and a screw through hole is arranged at the upper part of the positioning hole, and a corresponding threaded hole is arranged at the other end of the rotor shaft. The positioning hole of the guide is inserted and matched with the other end of the rotor shaft, and is fixedly connected through the threads in the threaded through hole and the threaded hole.

[0038] The sleeve nut is composed of a sleeve body part, a sleeve bottom part connected to the upper end of the sleeve body part, and a flange part connected to the lower end of the sleeve body part. A threaded center hole is arranged on the sleeve bottom part. The inner hole diameter of the sleeve body part matches the outer diameter gap of the guide sleeve part.

[0039] The stator adapter plate adopts a disc structure with a boss at the lower end. The boss plays a central positioning role for the motor stator. An inner circle threaded hole and an outer circle screw through hole are arranged on the stator adapter plate. The inner circle threaded hole corresponds to a screw through hole on the flange part of the sleeve nut, and is used to realize the fixed connection of the sleeve nut and the stator adapter plate. The outer circle screw through hole corresponds to a threaded hole arranged at the end of the motor stator, and is used to realize the fixed connection of the stator adapter plate and the motor stator 5.

[0040] The screw rod is composed of a threaded rod body part and a disc-shaped rod head part connected to the lower end of the rod body part. The outer diameter of the rod head part is slightly larger than the inner hole diameter of the sleeve part, and the upper end of the screw rod is a clamping fixed end.

[0041] In the above device, according to the diameter of the motor shaft, an open sleeve of different sizes can be selected for adaptation. At the same time, in order to prevent damage to the motor shaft, the material of the open sleeve can be selected as brass H62.

[0042] In the above device, the connecting screw between the adapter plate and the sleeve nut can be selected as an internal hexagonal screw to avoid interference with the parts when tightening.

[0043] In the above device, according to the axial length of the motor, a support of different lengths can be selected. At the same time, the connection between the support and the bottom plate can be designed as a threaded connection, which is more convenient for installation.

[0044] In the above device, the upper end of the screw rod can be machined into a hexagonal shape, i.e. a hexagonal column structure. When tightening the sleeve nut, the screw rod is fixed using a wrench, which is more efficient.

[0045] In the above device, an arc-shaped groove is left on the stator adapter plate, and the stator lead-out wire is passed through the arc-shaped groove. In this way, during installation, the stator lead-out wire can be prevented from being excessively bent and damaged.

[0046] The method for installing the stator using the above permanent magnet motor stator installation device is as follows:

[0047] First, the base plate is connected with a plurality of pillars (preferably 4 in the present application) and placed on a horizontal table; then the outer end of the motor front end cover 10 is inserted into the positioning hole at the upper end of the base plate, and the front end cover of the motor is fixed on the base plate using screws; then the bearing is placed in the bearing hole of the front end cover; then the rotor shaft 9 is inserted through the inner ring of the bearing and the center hole of the base plate and stands vertically in the center of the base plate, and the open end sleeve is fitted and fastened on the lower end of the rotor shaft, and the open end sleeve is fixedly connected with the lower end of the base plate through threads, so that the rotor shaft is fixed and prevented from deviating to one side and damaging the bearing; then the lower end of the guide sleeve is fitted and matched with the other end of the upper part of the rotor shaft, and fixed using screws; then the lower end surface of the stator adapter plate is connected with the stator 5 of the motor using screws, and the upper end surface of the stator adapter plate is connected with the flange part of the sleeve nut using screws; then the lower end surface of the screw rod is vertically placed at the uppermost part of the guide sleeve; then the stator of the motor is slowly sleeved downward vertically, and the upper threaded center hole of the sleeve nut is threadedly connected with the screw rod; then the upper end of the screw rod is fixed, the sleeve nut is gradually rotated, the stator of the motor is gradually lowered in the rotating process, and the stator of the motor is in contact with the front end cover, so that the stator is installed in place.

[0048] Although the embodiments of the present application and the drawings are disclosed for the purpose of illustration, those skilled in the art can understand that various substitutions, changes and modifications are possible without departing from the spirit of the present application and the appended claims, therefore, the scope of the present application is not limited to the disclosed content of the embodiments and the drawings.

Claims

1. A permanent magnet motor stator mounting device, characterized by: The bottom plate, the plurality of pillars, the open sleeve, the screw rod, the sleeve nut, the guide sleeve and the stator adapter plate are provided. The plurality of pillars are vertically connected to the lower end of the bottom plate, so that the bottom plate is separated from the installation table surface by a certain height. The center of the bottom plate is provided with a central hole through which one end of the rotor shaft of the motor passes and axial and radial positioning is achieved. The outer end of the front end cover is inserted into the positioning hole on the upper end of the bottom plate. The open sleeve is provided at the central position of the lower end of the bottom plate. The lower end of the guide sleeve is positioned and fixedly connected with the other end of the upper portion of the rotor shaft. The screw rod is composed of a threaded rod body portion and a disc-shaped rod head portion connected to the lower end of the rod body portion. The sleeve nut is composed of a sleeve body portion, a sleeve bottom portion connected to the upper end of the sleeve body portion and a flange portion connected to the lower end of the sleeve body portion. The stator adapter plate adopts a disc structure provided with a boss at the lower end.

2. A permanent magnet motor stator mounting arrangement according to claim 1, characterised in that: The sleeve body portion of the sleeve nut is externally sleeved on the guide sleeve and the disc-shaped rod head portion of the screw rod in a clearance fit manner.

3. The permanent magnet motor stator mounting device of claim 1, wherein: The material of the open sleeve is brass H62. The upper end of the screw rod adopts a cubic column structure.

4. A method for installing a stator by using the permanent magnet motor stator installation device according to any one of claims 1-3, comprising the following steps: Step 1: connecting the bottom plate with the plurality of pillars and placing them on a horizontal table surface; Step 2: inserting the outer end of the motor front end cover into the positioning hole on the upper end of the bottom plate, fixing the front end cover of the motor on the bottom plate by using a screw and placing a bearing in the bearing hole of the front end cover; Step 3: vertically placing one end of the rotor shaft through the inner ring of the bearing and the central hole of the bottom plate on the central hole of the bottom plate, sleeving and fastening the open sleeve on the lower end of the rotor shaft, and fixing the rotor shaft by thread connection between the open sleeve and the lower end of the bottom plate; Step 4: sleeving and fitting the lower end of the guide sleeve with the other end of the upper portion of the rotor shaft, and fixing by using a screw; Step 5: placing the stator adapter plate on the upper end of the guide sleeve, and fixing the stator adapter plate on the flange portion of the sleeve nut by using a screw; Step 5, the lower end surface of the stator adapter plate is connected with the stator of the motor by screws, and the upper end surface of the stator adapter plate is connected with the flange of the sleeve nut by screws; Step 6, the lower end surface of the screw rod is vertically placed at the uppermost of the guide sleeve; Step 7, the stator of the motor is slowly sleeved downward, and then the upper threaded hole of the sleeve nut is threadedly connected with the screw rod; the upper end of the screw rod is fixed, the sleeve nut is rotated, the stator of the motor is gradually lowered in the rotating process, and the stator of the motor is in contact with the front end cover, so that the stator is installed in place.

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