CN218733655U

CN218733655U - Motor drive shaft with location structure

Info

Publication number: CN218733655U
Application number: CN202222922002.9U
Authority: CN
Inventors: 怀国荣
Original assignee: Kunshan Huaishi Machinery Co ltd
Current assignee: Kunshan Huaishi Machinery Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-03-24
Anticipated expiration: 2032-11-03

Abstract

The utility model belongs to the technical field of motors, in particular to a motor driving shaft with a positioning structure, which comprises a spline shaft, wherein the left side of the spline shaft is connected with a transmission main shaft, the right side of the spline shaft is connected with a transmission auxiliary shaft, the outer side of the spline shaft is movably sleeved with a rotor mounting shaft, the inner side of the body of the rotor mounting shaft is provided with a spline groove matched with the spline shaft, and the outer side of the rotor mounting shaft is sleeved with a switching disc; the switching dish includes the internal fixation cover that links firmly with rotor installation axle, the outside cover of internal fixation cover is equipped with support bearing, support bearing's outside cover is equipped with external fixation cover, the cantilever of external fixation cover and the cantilever centre gripping of internal fixation cover are in support bearing's the side of controlling, and electric motor rotor in this device can slide to when making electric motor stator when the installation, need not consider its and electric motor rotor's positional relation, and then can make things convenient for electric motor stator's installation.

Description

Motor drive shaft with location structure

Technical Field

The utility model relates to the technical field of motors, specifically be a motor drive shaft with location structure.

Background

The motor is an electromagnetic device which realizes electric energy conversion or transmission according to the electromagnetic induction law. When the motor transmits kinetic energy, the motor stator pushes the motor rotor to rotate through magnetic force, the motor rotor drives the motor driving shaft to rotate, and then the external rotating shaft is driven to rotate through the motor driving shaft, so that the kinetic energy is transmitted. A shaft shoulder is arranged on the body of the motor driving shaft, a bearing is sleeved on the outer side of the motor driving shaft, and then the bearing is clamped by utilizing the outer side of the motor and the shaft shoulder of the motor driving shaft, so that the motor driving shaft and the bearing are fixed in the axial direction; meanwhile, the motor outer side and the motor driving shaft can be connected through the bearing, so that the motor driving shaft is radially supported through the bearing, and the motor driving shaft is prevented from shaking in rotation.

In the motor, a motor rotor is arranged on the outer side of a motor driving shaft, a motor stator is arranged on the inner side of a motor shell, and when the motor driving shaft is arranged, the motor driving shaft and the motor rotor are required to be axially positioned, so that the motor rotor corresponds to the motor stator; however, in the existing motor, the motor driving shaft and the motor rotor are integrated, and when the motor driving shaft is axially positioned, the axial position of the motor rotor is also fixed, so that when the motor stator in the motor housing is installed, the installation position of the motor stator needs to be measured to ensure that the position of the motor stator can correspond to the position of the motor rotor, but in actual installation, the motor rotor and the motor stator cannot completely correspond due to the processing error of the length of the motor rotor and the installation position error of the motor stator; there is therefore a need for a motor drive shaft that can adjust the position of the motor rotor so that the motor rotor can be aligned with the motor stator in different positions (axial positions).

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motor drive axle with location structure to solve the problem that the electric motor rotor in the current motor drive axle that proposes among the above-mentioned background art can not axial displacement.

In order to achieve the above object, the utility model provides a following technical scheme: a motor driving shaft with a positioning structure comprises a spline shaft, wherein the left side of the spline shaft is connected with a transmission main shaft, the right side of the spline shaft is connected with a transmission auxiliary shaft, the outer side of the spline shaft is movably sleeved with a rotor mounting shaft, the inner side of the body of the rotor mounting shaft is provided with a spline groove matched with the spline shaft, and the outer side of the rotor mounting shaft is sleeved with a switching disc;

the switching dish includes the interior fixed cover that links firmly with rotor installation axle, the outside cover of interior fixed cover is equipped with support bearing, support bearing's outside cover is equipped with outer fixed cover, outer fixed cover and interior fixed cover all set up and are the L type, the cantilever of outer fixed cover and the cantilever centre gripping of interior fixed cover are on support bearing's left and right sides, the outside of outer fixed cover is provided with anti-skidding line.

Preferably, the transmission auxiliary shaft comprises a limiting shaft, the left side and the right side of the limiting shaft are both provided with a supporting shaft and two sides, the outer side of the supporting shaft is both provided with a limiting bearing in a sleeved mode, the outer side of the limiting bearing is provided with a limiting ring in a sleeved mode, and the outer side of the limiting ring is provided with a limiting protrusion.

Preferably, the transmission main shaft comprises a threaded shaft, a stepped shaft is arranged on the left side of the threaded shaft, and a key groove is formed in the left end of the outer side of the stepped shaft.

Preferably, the outer diameter of the transmission auxiliary shaft is larger than the diameter of the spline shaft, and the outer side of the threaded shaft is in threaded connection with a limiting baffle.

Compared with the prior art, the beneficial effects of the utility model are that:

1) The device is characterized in that a motor rotor is arranged on the outer side of a rotor mounting shaft, the rotor mounting shaft is sleeved on the outer side of a spline shaft, the rotor mounting shaft can slide along the axial direction of the spline shaft, so that the position of the motor rotor can be adjusted in the axial direction, and then the motor rotor can be completely aligned with a motor stator when being fixed through a switching disc and a motor shell;

2) The motor rotor in the device can slide, so that the motor stator does not need to be considered in the position relation with the motor rotor when being installed, and the installation of the motor stator can be facilitated.

Drawings

FIG. 1 is a schematic sectional view of the front view of the utility model after installation;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a schematic sectional structural view of the adapter plate of the present invention;

fig. 4 is a schematic view of the sectional structure of the main view of the transmission auxiliary shaft of the present invention.

In the figure: spline shaft 1, transmission main shaft 2, threaded shaft 21, stepped shaft 22, key groove 23, limit baffle 24, auxiliary transmission shaft 3, limit shaft 31, support shaft 32, limit bearing 33, limit ring 34, limit bulge 35, rotor mounting shaft 4, adapter disc 5, inner fixing sleeve 51, outer fixing sleeve 52, support bearing 53 and anti-skid thread 54.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The embodiment is as follows:

referring to fig. 1-4, the present invention provides a technical solution: a motor driving shaft with a positioning structure comprises a spline shaft 1, wherein the left side of the spline shaft 1 is connected with a transmission main shaft 2, the right side of the spline shaft 1 is connected with a transmission auxiliary shaft 3, the left end of the transmission main shaft 2 penetrates through a motor shell 6 after the device is installed, the transmission auxiliary shaft 3 and the transmission auxiliary shaft 3 are both connected with the motor shell 6 through bearings, the transmission auxiliary shaft 3 and the transmission auxiliary shaft 3 are radially supported through the motor shell 6, so that the transmission auxiliary shaft 3 and the transmission auxiliary shaft 3 are prevented from jumping in rotation, a rotor installing shaft 4 is movably sleeved on the outer side of the spline shaft 1, a motor rotor 8 is installed on the outer side of the rotor installing shaft 4, a spline groove matched with the spline shaft 1 is formed in the inner side of the body of the rotor installing shaft 4, the rotor installing shaft 4 can slide left and right along the spline shaft 1 through the matching of the spline groove and the spline shaft 1, and then the motor rotor 8 is driven to slide left and right, the outer side of the rotor mounting shaft 4 is sleeved with a switching disc 5, a motor stator 7 is mounted in an inner cavity of a motor shell 6, the left end and the right end of the motor stator 7 are provided with positioning clamping grooves matched with the switching disc 5, after the device is mounted, the switching disc 5 is fixed in the radial direction through the positioning clamping grooves in the inner cavity of the motor shell 6 matched with the switching disc 5, namely, the motor rotor 8 is fixed in the radial direction, and as the positioning clamping grooves are arranged at the left end and the right end of the motor stator 7, the motor rotor 8 is automatically aligned with the motor stator 7 when the motor rotor 8 is fixed, the alignment of the motor rotor 8 depends on the switching disc 5 as a reference surface, and the switching disc 5 serves as a slidable structure, so that the position of the motor stator 7 does not need to be measured, the position of the motor stator 7 does not need to be fixed, and the reference surface of a motor driving shaft can be reduced, thereby facilitating the processing of the motor driving shaft;

the adapter plate 5 comprises an inner fixing sleeve 51 fixedly connected with the rotor mounting shaft 4, namely the inner fixing sleeve 51 can synchronously rotate along with the rotor mounting shaft 4, the outer side of the inner fixing sleeve 51 is sleeved with a supporting bearing 53, the outer side of the supporting bearing 53 is sleeved with an outer fixing sleeve 52, because the device is installed, in order to reduce abrasion caused by friction, the rotating part of a motor driving shaft is required to be prevented from directly contacting with a motor shell 6, therefore, the motor shell 6 is required to be used for clamping the adapter plate 5 at this time, the outer side of the outer fixing sleeve 52 is provided with anti-skidding threads 54, the inner side of a positioning clamping groove is provided with anti-skidding grooves corresponding to the anti-skidding threads 54, the outer fixing sleeve 52 is fixed through the anti-skidding grooves, so that the outer fixing sleeve 52 cannot rotate along with the rotation of the inner fixing sleeve 51, in addition, the inner fixing sleeve 51 is connected with the supporting bearing 53 through the anti-skidding grooves, the abrasion caused when the inner fixing sleeve 51 rotates can be reduced, the outer fixing sleeve 52 and the inner fixing sleeve 51 are both arranged in an L shape, the cantilever of the outer fixing sleeve 52 and the inner fixing sleeve 51 are clamped on the left side and the right side of the supporting bearing 53, when the device is installed, the cantilever of the outer fixing sleeve 52, the cantilever of the cantilever fixing sleeve 52, and the cantilever fixing sleeve 53, and the cantilever of the cantilever fixing sleeve, and the cantilever fixing sleeve 51, and the cantilever are prevented from axially supported by the cantilever 53, and the cantilever.

Shaft 3 is assisted in transmission includes spacing axle 31, the side all is provided with back shaft 32 about spacing axle 31, the outside of both sides back shaft 32 all overlaps and is equipped with spacing bearing 33, the spacing bearing 33 of both sides all laminates with spacing axle 31, the outside cover of spacing bearing 33 is equipped with spacing ring 34, the outside of spacing ring 34 is provided with spacing arch 35, be provided with the spacing groove corresponding with spacing ring 34 and spacing arch 35 in motor housing 6's the inner chamber, it can't produce the removal in the axial to make shaft 3 be assisted in transmission through the spacing groove, and then restrict this device, make motor drive shaft can't produce the removal in the axial.

The transmission main shaft 2 comprises a threaded shaft 21, a stepped shaft 22 is arranged on the left side of the threaded shaft 21, and a key groove 23 is formed in the left end of the outer side of the stepped shaft 22.

The external diameter of axle 3 is assisted in the transmission is greater than the diameter of integral key shaft 1, and the outside spiro union of threaded shaft 21 has limit baffle 24, and before this device was not installed, through limit baffle 24 and transmission assistance axle 3 stop, can avoid rotor installation axle 4 from the landing on integral key shaft 1, when installing this device, need now demolish limit baffle 24.

The working principle is as follows: when the device is installed, the limiting baffle plate 24 is firstly screwed off, then the rotor installation shaft 4 is slid, the switching disc 5 is driven to slide through the rotor installation shaft 4, the switching disc 5 is aligned with the positioning clamping groove of the motor shell 6, meanwhile, the auxiliary transmission shaft 3 is aligned with the limiting groove of the motor shell 6, then the switching disc 5 is aligned with the positioning clamping groove of the motor shell 6, the auxiliary transmission shaft 3 is aligned with the limiting groove of the motor shell 6, and then the device is fixed through the motor shell 6;

this device is at the rotation in-process, and switching dish 5 can fix rotor installation axle 4 in the axial, and switching dish 5 can also radially support rotor installation axle 4, and transmission auxiliary shaft 3 can be fixed transmission main shaft 2 in the axial, and transmission auxiliary shaft 3 can also radially support transmission main shaft 2.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, it will be obvious to those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a motor drive axle with location structure, includes integral key shaft (1), its characterized in that: the left side of the spline shaft (1) is connected with a transmission main shaft (2), the right side of the spline shaft (1) is connected with a transmission auxiliary shaft (3), the outer side of the spline shaft (1) is movably sleeved with a rotor mounting shaft (4), the inner side of the body of the rotor mounting shaft (4) is provided with a spline groove matched with the spline shaft (1), and the outer side of the rotor mounting shaft (4) is sleeved with a switching disc (5);

switching dish (5) include interior fixed cover (51) that links firmly with rotor installation axle (4), the outside cover of interior fixed cover (51) is equipped with support bearing (53), the outside cover of support bearing (53) is equipped with outer fixed cover (52), outer fixed cover (52) and interior fixed cover (51) all set up and are the L type, the cantilever of outer fixed cover (52) and the cantilever centre gripping of interior fixed cover (51) are on the left and right sides of support bearing (53), the outside of outer fixed cover (52) is provided with anti-skidding line (54).

2. A motor drive shaft having a positioning structure according to claim 1, wherein: the transmission auxiliary shaft (3) comprises a limiting shaft (31), a supporting shaft (32) and two sides are arranged on the left side and the right side of the limiting shaft (31), a limiting bearing (33) is sleeved on the outer side of the supporting shaft (32), a limiting ring (34) is sleeved on the outer side of the limiting bearing (33), and a limiting bulge (35) is arranged on the outer side of the limiting ring (34).

3. A motor drive shaft having a positioning structure according to claim 1, wherein: the transmission main shaft (2) comprises a threaded shaft (21), a stepped shaft (22) is arranged on the left side of the threaded shaft (21), and a key groove (23) is formed in the left end of the outer side of the stepped shaft (22).

4. A motor drive shaft having a positioning structure according to claim 3, wherein: the outer diameter of the transmission auxiliary shaft (3) is larger than the diameter of the spline shaft (1), and the outer side of the threaded shaft (21) is connected with a limiting baffle (24) in a threaded mode.