CN210033933U

CN210033933U - Connecting structure of rotating shaft and fan blade

Info

Publication number: CN210033933U
Application number: CN201920711845.XU
Authority: CN
Inventors: 郭瑞; 朱悦; 邹晓颖; 雷英鹏; 唐周红
Original assignee: Baizhong Fasteners (shanghai) Co Ltd
Current assignee: Baizhong Fasteners (shanghai) Co Ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-02-07
Anticipated expiration: 2029-05-17

Abstract

The utility model relates to a draw bail of pivot and flabellum, annular groove (101) have been seted up on pivot (1), and elasticity anticreep ring (2) have been arranged in recess (101), arch (201) have been arranged to elasticity anticreep ring (2) surface, and pivot (1) of arranging elasticity anticreep ring (2) realize the hookup of pivot (1) and flabellum (3) in inserting pivot jack (302) of flabellum (3). Compared with the prior art, the utility model adopts the elastic anti-drop ring to increase the friction force, the bulge on the elastic anti-drop ring can prevent the rotating shaft from loosening, and meanwhile, the elastic compensation can be increased because the elastic anti-drop ring has certain elasticity; the fixing block is arranged to lock the rotating shaft and the fan blades together, so that the rotating shaft and the fan blades can rotate at the same speed.

Description

Connecting structure of rotating shaft and fan blade

Technical Field

The utility model relates to a draw bail especially relates to a draw bail of pivot and flabellum.

Background

The connection of the rotating shaft and the fan blades in the speed reducer influences the rotation of the fan blades, so that the operation of the speed reducer is directly influenced. Generally, the fan blades and the rotating shaft are sleeved by a common ring, so that the fan blades are easy to loosen, the speed reducer is unsmooth in operation, and even the fan blades and the speed reducer are damaged.

SUMMERY OF THE UTILITY MODEL

The present invention aims to overcome the above-mentioned drawbacks of the prior art and provide a connecting structure for connecting a rotating shaft and a fan blade.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a draw bail of pivot and flabellum, set up annular groove in the pivot, arranged elasticity anticreep ring in the recess, elasticity anticreep ring surface has arranged the arch, and the pivot of arranging elasticity anticreep ring inserts in the pivot jack of flabellum, realizes the hookup of pivot and flabellum.

Further, the cross-sectional shape of the protrusion is semicircular or trapezoidal.

Furthermore, the axial dimension of the groove is consistent with that of the elastic anti-slip ring, and the elastic anti-slip ring is clamped into the groove.

Furthermore, the end part of the rotating shaft is conical, and the included angle between the conical bus and the axis is 20 degrees, so that the rotating shaft can be conveniently inserted into the rotating shaft insertion hole.

Furthermore, the rotating shaft head is further provided with a fixed block, one side of each fan blade is provided with a connecting sheet matched with the fixed block, and a through hole matched with the fixed block is formed in the middle of each connecting sheet.

Furthermore, the section of the fixed block is rectangular, and the length of a diagonal line of the fixed block is smaller than the diameter of the end part of the rotating shaft.

Furthermore, the connecting sheet is fixedly connected with the fan blade, and the through hole of the connecting sheet is concentric with the rotating shaft jack of the fan blade.

When the rotating shaft is connected with the fan blades, the elastic anti-drop ring is firstly sleeved on the rotating shaft and is arranged in the groove of the rotating shaft, and then the rotating shaft is inserted into the rotating shaft jack of the fan blade, so that the fixing block at the end part of the rotating shaft is matched and locked with the through hole on the fan blade connecting sheet.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the elastic anti-drop ring is adopted to increase the friction force, the protrusion on the elastic anti-drop ring can prevent the rotating shaft from loosening, and meanwhile, the elastic compensation can be increased because the elastic anti-drop ring has certain elasticity;

2. the fixing block is arranged to lock the rotating shaft and the fan blades together, so that the rotating shaft and the fan blades can rotate at the same speed.

Drawings

FIG. 1 is a schematic structural view of the elastic anti-drop ring of the present invention;

FIG. 2 is a schematic structural view of the elastic anti-drop ring of the present invention;

FIG. 3 is a schematic view of an assembly structure of the middle shaft, the elastic anti-slip ring and the fan blade of the present invention;

FIG. 4 is a schematic structural view of the middle shaft of the present invention;

FIG. 5 is a schematic structural view of the middle connecting piece of the present invention;

fig. 6 is a schematic structural view of the fan blade of the present invention.

The reference numbers in the figures indicate:

1. the hinge comprises a rotating shaft, 101, a groove, 102, a fixing block, 2, an elastic anti-drop ring, 201, a protrusion, 3, fan blades, 301, a connecting sheet, 302, a rotating shaft jack, 303 and a through hole.

Detailed Description

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

Examples

A connecting structure of a rotating shaft and fan blades is characterized in that as shown in fig. 3, an annular groove 101 is formed in a rotating shaft 1, an elastic anti-falling ring 2 is arranged in the groove 101, a protrusion 201 is arranged on the outer surface of the elastic anti-falling ring 2, the rotating shaft 1 with the elastic anti-falling ring 2 is inserted into a rotating shaft inserting hole 302 of the fan blade 3, and the connecting of the rotating shaft 1 and the fan blade 3 is achieved. The cross-sectional shape of the protrusion 201 is semicircular (fig. 2) or trapezoidal (fig. 1). The axial dimension of the groove 101 corresponds to the axial dimension of the elastic anti-slip ring 2, snapping the elastic anti-slip ring 2 into the groove 101. The end of the rotating shaft 1 is conical, and the included angle between the conical generatrix and the axis is 20 degrees, so that the rotating shaft 1 can be conveniently inserted into the rotating shaft insertion hole 302. As shown in fig. 4, the head of the rotating shaft 1 is further provided with a fixing block 102, one side of the fan blade 3 is provided with a connecting piece 301 (fig. 5) matched with the fixing block 102, and the middle of the connecting piece 301 is provided with a through hole 303 matched with the fixing block 102. The section of the fixed block 102 is rectangular, and the length of the diagonal line of the fixed block 102 is smaller than the diameter of the end of the rotating shaft 1. The connecting piece 301 is fixedly connected with the fan blade 3, and the through hole 303 of the connecting piece 301 is concentric with the rotating shaft inserting hole 302 of the fan blade 3 (fig. 6).

When the rotating shaft 1 is connected with the fan blade 3, the elastic anti-drop ring 2 is firstly sleeved on the rotating shaft 1 and is arranged in the groove 101 of the rotating shaft 1, and then the rotating shaft 1 is inserted into the rotating shaft insertion hole 302 of the fan blade 3, so that the fixing block 102 at the end part of the rotating shaft 1 is matched and locked with the through hole 303 on the connecting piece 301 of the fan blade 3.

The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.

Claims

1. The utility model provides a draw bail of pivot and flabellum, its characterized in that, annular groove (101) have been seted up on pivot (1), elastic anticreep ring (2) have been arranged in recess (101), arch (201) have been arranged to elastic anticreep ring (2) surface, and pivot (1) of arranging elastic anticreep ring (2) inserts in pivot jack (302) of flabellum (3), realizes the hookup of pivot (1) and flabellum (3).

2. A coupling structure of a rotating shaft and a fan blade according to claim 1, wherein the cross-sectional shape of the protrusion (201) is semicircular or trapezoidal.

3. A coupling structure of a shaft and a fan blade according to claim 1, wherein the axial dimension of the groove (101) is consistent with the axial dimension of the elastic anti-slip ring (2).

4. A shaft and blade connection according to claim 1, wherein the end of the shaft (1) is conical, and the included angle between the generatrix of the conical shape and the axial line is 20 °.

5. A connecting structure of a rotating shaft and fan blades as claimed in claim 1, wherein the head of the rotating shaft (1) is further provided with a fixing block (102), one side of the fan blades (3) is provided with a connecting piece (301) matched with the fixing block (102), and the middle of the connecting piece (301) is provided with a through hole (303) matched with the fixing block (102).

6. A connecting structure of a rotating shaft and fan blades as claimed in claim 5, wherein the cross section of the fixing block (102) is rectangular, and the length of the diagonal line of the fixing block (102) is smaller than the diameter of the end part of the rotating shaft (1).

7. A rotating shaft and fan blade connecting structure according to claim 5, wherein the connecting piece (301) is fixedly connected with the fan blade (3), and the through hole (303) of the connecting piece (301) is concentric with the rotating shaft insertion hole (302) of the fan blade (3).