CN210490641U

CN210490641U - Fan blade limiting retainer ring on motor shaft

Info

Publication number: CN210490641U
Application number: CN201921201900.7U
Authority: CN
Inventors: 阮腾明
Original assignee: Zhuhai Tongde Electromotor Equipment Co ltd
Current assignee: Zhuhai Tongde Electromotor Equipment Co ltd
Priority date: 2019-07-29
Filing date: 2019-07-29
Publication date: 2020-05-08
Anticipated expiration: 2029-07-29

Abstract

The utility model belongs to the technical field of flabellum installation auxiliary component technique and specifically relates to a spacing rand of fan blade on motor shaft, including ring portion, ring portion offer with motor shaft draw-in groove assorted opening, ring portion is the platykurtic, the opening is including the first fitting surface that even as an organic whole, symmetry set up, the second fitting surface that the symmetry set up, first fitting surface is the plane corresponding with the motor shaft draw-in groove, the second fitting surface is circular-arc corresponding with the motor shaft external diameter, the opening links up the department with first fitting surface and is equipped with the bump that the symmetry set up. The quality hidden danger that the rotating shaft is broken or the check ring falls off is solved, and the product quality is improved; the problem of rand focus lead to motor vibration too big on rotatory focus is solved.

Description

Fan blade limiting retainer ring on motor shaft

Technical Field

The utility model relates to a flabellum installation auxiliary component technical field especially relates to a spacing rand of fan blade on motor shaft.

Background

The extension end of the motor shaft usually needs to increase a clamping ring and mill a flat position with a certain thickness to limit the fan blade fixed on the shaft, the clamping ring in the current market is a standard part of GB896-86 or a structural part with a similar shape, the clamping ring of the structure needs to cut a circular notch corresponding to the inner diameter of the clamping ring on the rotating shaft to fix the clamping ring, for a shaft phi 8 with a small shaft diameter, for example, a circular notch with the depth of phi 6 is cut at the extension end of the shaft, and then the fan blade is arranged at the extension end of the shaft, so that the hidden danger of the breakage of the rotating shaft can be brought, in order to solve the problem of the breakage of the rotating shaft, a non-standard clamping ring with the inner diameter of phi 7 is also used, and the clamping ring of the structure is easy to fall off when the rotating shaft rotates, and the gravity center of the clamping ring of the structure is: when the clamping ring is installed on a motor with qualified dynamic balance, the dynamic balance of parts is seriously influenced, so that the motor vibrates excessively. Therefore, there is a need for an improved axial blade retaining collar on the market today.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving prior art well rand structure unreasonable, influence motor life's shortcoming, and the spacing rand of fan blade on the motor shaft that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a spacing rand of fan blade on motor shaft, includes ring portion, ring portion offer with motor shaft draw-in groove assorted opening, ring portion is the platykurtic, the opening is including the first fitting surface that even as an organic whole, symmetry set up, the second fitting surface that the symmetry set up, first fitting surface is the plane corresponding with the motor shaft draw-in groove, the second fitting surface is circular-arcly corresponding with the motor shaft external diameter, the opening links up the department with first fitting surface and is equipped with the bump that the symmetry set up.

Preferably, one end of the opening part far away from the opening is provided with a notch.

Preferably, the ring portion is composed of a first cambered surface with a smaller outer diameter and a second cambered surface with a larger outer diameter, and the second cambered surface is arranged close to the opening.

Preferably, the width of the opening position is slightly larger than the width of the motor shaft clamping groove, the distance between the first matching surfaces which are symmetrically arranged is equal to the width of the motor shaft clamping groove, and the distance between the salient points which are symmetrically arranged is slightly smaller than the width of the motor shaft clamping groove.

The utility model provides a pair of spacing rand of fan blade on motor shaft, beneficial effect lies in:

1. the quality hidden danger that the rotating shaft is broken or the check ring falls off is solved, and the product quality is improved;

2. the problem of rand focus lead to motor vibration too big on rotatory focus is solved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a motor shaft slot structure of the present invention;

fig. 3 is the schematic diagram of the cross-sectional structure of the motor shaft slot of the present invention.

In the figure: the opening part 1, the first matching surface 11, the second matching surface 12, the opening 13, the salient point 14, the notch 15, the ring part 2, the first cambered surface 21, the second cambered surface 22, the center of gravity G and the rotation center line O.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Referring to fig. 1-3, a fan blade limiting retainer ring on motor shaft, including ring portion 2, ring portion 2 sets up opening 1 with motor shaft draw-in groove assorted, ring portion 2 is the platykurtic, opening 1 includes opening 13, the first fitting surface 11 that sets up of symmetry, the second fitting surface 12 that the symmetry set up that even is as an organic whole, first fitting surface 11 is the plane corresponding with motor shaft draw-in groove, second fitting surface 12 is the circular-arc corresponding with the motor shaft external diameter, opening 13 is equipped with the bump 14 that the symmetry set up with first fitting surface 11 linking department.

First fitting surface 11 is planar, just so can be better with the epaxial recess of pivot cooperate, in addition, planar first fitting surface 11 is processed more easily, has reduced manufacturing cost, and this planar structure with the pivot cooperation back, can not rotate on the pivot. The second mating surface is arc-shaped corresponding to the outer diameter of the rotating shaft, and the position of the retainer ring pressed into the rotating shaft is limited by the second mating surface.

The opening part is matched with the rotating shaft, only a groove with the size corresponding to the distance between the two first matching surfaces 11 is cut on two sides of the shaft, and only part of the outer peripheral surface of the rotating shaft on the same section is provided with the groove, namely, other parts of the outer peripheral surface of the rotating shaft on the same section are kept as the original shape. Because the range of the grooves on the peripheral surface of the rotating shaft on the same section is reduced, the mechanical strength of the rotating shaft at the position where the grooves are formed is improved, and the quality hidden trouble of the breakage of the rotating shaft is avoided.

The end of the opening part 1 far away from the opening 13 is provided with a notch 15, so that when the clamping ring is broken off, the clamping ring is not easy to damage and has larger deformation.

Ring portion 2 comprises the less first cambered surface 21 of external diameter, the great second cambered surface 22 of external diameter, and second cambered surface 22 is close to opening 13 position setting, and through the external diameter 22 that increases the bottom cambered surface, makes the holistic focus G of spacing rand and rotation center line O coincidence, and back on spacing rand assembles motor shaft like this, can not change the dynamic balance volume of rotor to can not increase the vibration when motor operation.

The width of the position of the opening 13 is slightly larger than the width of a clamping groove of a motor shaft, the distance between the first matching surfaces 11 which are symmetrically arranged is equal to the width of the clamping groove of the motor shaft, and the distance between the salient points 14 which are symmetrically arranged is slightly smaller than the width of the clamping groove of the motor shaft, so that the clamping ring can be conveniently placed on a groove on the rotating shaft, and the clamping ring can be favorably and smoothly pressed into the rotating shaft. Because the opening 13 is provided with two convex points 14 extending oppositely, the clamping ring is further prevented from falling off from the rotating shaft after being matched with the rotating shaft.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model thereof, the technical solution, concept and design obtained by equivalent replacement or change should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a spacing rand of fan blade on motor shaft, includes ring portion (2), ring portion (2) seted up with motor shaft draw-in groove assorted opening (1), a serial communication port, ring portion (2) are the platykurtic, opening (1) are including even first fitting surface (11), the second fitting surface (12) that the symmetry set up of opening (13), symmetry setting as an organic whole, first fitting surface (11) are the corresponding plane with the motor shaft draw-in groove, second fitting surface (12) are the circular-arc corresponding with the motor shaft external diameter, opening (13) are equipped with bump (14) that the symmetry set up with first fitting surface (11) linking department.

2. The retaining collar for the upper fan blade of a motor shaft as claimed in claim 1, wherein the opening (1) is provided with a notch (15) at an end thereof remote from the opening (13).

3. The motor shaft upper fan blade limit retainer ring according to claim 1, characterized in that the ring portion (2) is composed of a first arc surface (21) and a second arc surface (22), the outer diameter of the first arc surface (21) is smaller than the outer diameter of the second arc surface (22), and the second arc surface (22) is arranged near the opening (13).

4. The wind blade stop collar on motor shaft of claim 1, characterized in that the width of the position of said opening (13) is greater than the width of the motor shaft slot, the distance between said first fitting surfaces (11) symmetrically arranged is equal to the width of the motor shaft slot, and the distance between said salient points (14) symmetrically arranged is less than the width of the motor shaft slot.