CN217362799U

CN217362799U - Generator rotor shaft and generator rotor shaft assembly

Info

Publication number: CN217362799U
Application number: CN202123420941.5U
Authority: CN
Inventors: 柯昌平; 孙林; 柯沛; 卓成义; 彭刚
Original assignee: Chongqing Haofan Machinery Co ltd
Current assignee: Chongqing Haofan Machinery Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-09-02
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses a generator rotor shaft and generator rotor shaft subassembly, this rotor shaft include solid axis body, are equipped with the rotor installation section that is used for the rotor to install in the middle part of solid axis body, be equipped with the axle journal section that is used for the bearing installation on one end of solid axis body, processing threaded connection hole on the terminal surface of the other end of solid axis body, threaded connection hole and solid axis body are coaxial, processing has the assembly section that is used for the assembly on the solid axis body of threaded connection hole one end, the assembly section is the step shaft structure; the connecting mode that the traditional generator rotor shaft is provided with a through hole in the center of the shaft body is changed; the assembling section is arranged at one end of the rotor shaft, and the connecting part is assembled through the assembling section by the aid of the assembling section, so that strength of the whole shaft and strength of torsional force are guaranteed.

Description

Generator rotor shaft and generator rotor shaft assembly

Technical Field

The utility model relates to a rotor shaft technical field, concretely relates to generator rotor shaft and generator rotor shaft subassembly.

Background

A shaft is a common component in the mechanical field, and is usually a cylindrical workpiece. The shaft is used for supporting the rotating parts and realizing simultaneous rotation to transmit power, so that when the shaft type parts work, the shaft type parts need to bear torque or bending moment.

The generator rotor shaft is formed by arranging a rotor core and a rotor winding in a rotor, and the generator rotor shaft generates electricity by cutting magnetic induction lines through the rotation of the generator rotor, and the generator rotor is usually connected to a power source to drive the generator rotor to rotate. From the above, it can be seen that if the torque resistance of the rotor shaft and the stability of the power connection can be improved, the performance of the generator will be improved.

The existing generator rotor shaft and the power output end are generally connected in a taper fit manner, a middle through hole penetrates through a screw rod for fastening, and the problems of slipping, heating, conical surface strain and the like of the connection part can be caused under the inertia effect of the rotor after long-time frequent starting and stopping; the through hole in the center of the shaft reduces the wall thickness of the shaft body, the self torsion bearing is seriously folded, and the service life of the generator is seriously influenced.

Disclosure of Invention

To the defect among the prior art, the utility model provides a generator rotor shaft and rotor shaft subassembly to improve the life of rotor shaft, promote the work efficiency of generator.

In order to achieve the above object, the utility model provides a generator rotor shaft, this rotor shaft include solid axis body, are equipped with the rotor installation section that is used for the rotor installation at the middle part of solid axis body, one of solid axis body serves and is equipped with the axle journal section that is used for the bearing installation, it has threaded connection hole to process on the terminal surface of the other end of solid axis body, threaded connection hole is coaxial with solid axis body, in threaded connection hole one end processing has the assembly section that is used for the assembly on the solid axis body, the assembly section is the step shaft structure.

According to the generator rotor shaft, the whole rotor shaft is of a solid structure, so that the connection mode of the traditional generator rotor shaft by processing a through hole in the center of a shaft body is changed; the assembling section is arranged at one end of the rotor shaft, and the connecting part is assembled through the assembling section by the aid of the assembling section, so that strength of the whole shaft and strength of torsional force are guaranteed.

An advantageous feature of the rotor shaft according to the above is: the stepped shaft structure of the assembling section is at least provided with two steps. Wherein the step shaft if exceed the two-stage ladder, alright more actual need processing sets up to the two-stage ladder in this embodiment, through the setting of two-stage ladder for the location shoulder when the shaft shoulder in the two-stage ladder can regard as the assembly uses, and joint strength when promoting the assembly judges the condition that the mounted position targets in place through the shoulder, promotes assembly efficiency and assembly quality.

An advantageous feature of the rotor shaft according to the above is: the rotor mounting section is provided with a plurality of anti-skidding grooves along the length direction of the rotor mounting section, and the anti-skidding grooves are uniformly distributed in the whole rotor mounting section. The arrangement of the anti-skidding grooves enables the rotor core and the rotor winding to be more stable in installation, and stability of the motor rotor is improved.

Another advantageous embodiment of the present application: a generator rotor shaft assembly comprises the generator rotor shaft, wherein a flange plate is installed on the assembling section of a solid shaft body through a hot-fitting method, the flange plate is in interference fit with the solid shaft body, and a spigot is arranged at the front end, far away from the solid shaft, of the flange plate; when the flange plate is installed, the tail end of the flange plate extends out of the solid shaft body, so that when the flange plate is connected with the power shaft in a matched mode, the flange plate is meshed with the power output end in a sliding mode, the coaxiality of the rotor after being connected with the power output end is guaranteed, and the whole motor is stable in operation.

The utility model discloses following beneficial effect has at least: the traditional one end through setting up the through-hole with the axle center has been changed and has been connected to power on, but sets up a connecting part through at solid axis body, is connected through connecting part and power take off end, has avoided the junction to skid, generate heat and produce the influence to the axle body, and no central through-hole equivalence has increased the wall thickness of axle body, has promoted overall structure intensity, has promoted the antitorque force performance of rotor shaft.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a front view of a rotor shaft of a generator according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the generator rotor shaft shown in FIG. 1;

FIG. 3 is a schematic structural view of the generator rotor shaft assembly shown in FIG. 1.

In the drawing, a solid shaft body 1, a rotor mounting section 11, an assembling section 12, a shaft neck section 13, an anti-skidding groove 14, a threaded connecting hole 15, a flange plate 2, a spigot 21 and a threaded hole 22.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1-2, one embodiment of the present application is: a rotor shaft of a generator comprises a solid shaft body 1, wherein a rotor mounting section 11 for mounting a rotor is arranged in the middle of the solid shaft body 1, a shaft neck section 13 for mounting a bearing is arranged at one end of the solid shaft body 1, a threaded connecting hole 15 is processed on the end surface of the other end of the solid shaft body 1, the threaded connecting hole 15 is coaxial with the solid shaft body 1, an assembling section 12 for assembling is processed on the solid shaft body 1 at one end of the threaded connecting hole 15, and the assembling section 12 is of a stepped shaft structure; the stepped shaft structure of the assembling section 12 is at least provided with two steps; a plurality of anti-skid grooves 14 are formed in the rotor mounting section 11 along the length direction of the rotor mounting section, and the anti-skid grooves 14 are uniformly distributed in the whole rotor mounting section 11; the journal section 13 is of a three-section type three-step shaft structure, and shaft shoulders of the three-step shaft structure are provided with chamfers; the section of the antiskid groove 14 is in a V-shaped structure.

As shown in fig. 3, the method further includes that a flange plate 2 is mounted on the mounting section 12 of the solid shaft body 1, the flange plate 2 is provided with a spigot 21, six threaded holes 22 are uniformly arranged on the flange plate 2, and the flange is connected with the power output end through the threaded holes 22. The flange is tightly connected with the crankshaft body by adopting a flange hot-mounting method on the outer circle of the solid shaft and the power connecting end, 6M 10 threaded holes 22 are uniformly distributed on the flange plate 2 so as to be convenient for being connected with the power output end flange, the shaft body adopts a solid structure, and the torque strength of the shaft body is enhanced. The front end of the flange is provided with a spigot 21 which is in sliding fit and occlusion with the power output end, and the coaxiality of the rotor after being connected with the power output end is ensured, so that the whole motor is more stable in operation. Through the flange type connection, the power is more effectively transmitted to the rotor of the generator, so that the working efficiency of the generator is higher; the flange plate 2 is connected by 6M 10 screws, so that slipping and pulling damage caused by frequent starting and stopping of the generator and inertia are avoided, and the service life of the generator is prolonged. The spigot 21 is arranged for sliding fit installation, so that the coaxiality of the generator and the power output end is better during working, and the running is more stable.

The flange 2 is assembled by a hot-fitting method: firstly preparing materials, ensuring the tidiness of the materials, then heating the central hole of the flange plate 2 through a heating device to enable the flange plate to expand, then brushing a layer of lubricating oil on the assembling section 12 of the solid shaft body 1, and then pressing the heated flange plate 2 into the assembling section 12 of the rotor shaft through press-fitting equipment to complete assembling.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. A generator rotor shaft, characterized by: the assembly structure comprises a solid shaft body, wherein a rotor installation section for installing a rotor is arranged in the middle of the solid shaft body, one end of the solid shaft body is provided with a shaft neck section for installing a bearing, a threaded connection hole is processed in the end face of the other end of the solid shaft body, the threaded connection hole is coaxial with the solid shaft body, an assembly section for assembling is processed in one end of the threaded connection hole in the solid shaft body, and the assembly section is of a stepped shaft structure.

2. A generator rotor shaft according to claim 1, characterised in that: the stepped shaft structure of the assembling section is at least provided with two steps.

3. A generator rotor shaft according to claim 1, characterised in that: the rotor mounting section is provided with a plurality of anti-skidding grooves along the length direction of the rotor mounting section, and the anti-skidding grooves are uniformly distributed in the whole rotor mounting section.

4. A generator rotor shaft according to claim 1, characterised in that: the journal section is the three-step shaft structure of syllogic, and the shaft shoulder of three-step shaft structure all is equipped with the chamfer.

5. A generator rotor shaft according to claim 3, characterised in that: the section of the anti-skid groove is of a V-shaped structure.

6. A generator rotor shaft assembly characterized by: the generator rotor shaft of any one of claims 1-5, wherein a flange is mounted on the assembling section by a hot-fitting method, and the flange is in interference fit with the solid shaft body.

7. A generator rotor shaft assembly according to claim 6, wherein: and a spigot is arranged at the front end of the flange plate far away from the solid shaft.

8. A generator rotor shaft assembly according to claim 6, wherein: and a plurality of threaded holes are processed on the flange plate.