CN209800354U

CN209800354U - Impeller connecting shaft knot

Info

Publication number: CN209800354U
Application number: CN201920053264.1U
Authority: CN
Inventors: 于培勇
Original assignee: Dongguan Jinguangheng Environmental Protection And Energy Saving Technology Co Ltd
Current assignee: Dongguan Jinguangheng Environmental Protection And Energy Saving Technology Co Ltd
Priority date: 2019-01-14
Filing date: 2019-01-14
Publication date: 2019-12-17
Anticipated expiration: 2029-01-14

Abstract

The utility model provides an impeller is axle knot even belongs to even axle knot technical field, including impeller, axle sleeve and connecting axle, impeller fixed connection is at the axle sleeve outer periphery, and the axle sleeve inside wall is provided with a plurality of first keyways, and the connecting axle assembly is inside the axle sleeve, and corresponds the position with first keyway on the connecting axle and still be provided with a plurality of second keyways, still be provided with a plurality of round holes along axle sleeve axial distribution in the axle sleeve, the trompil that the connecting rod of being convenient for runs through is seted up to one side pore wall department that the round hole is close to the axle sleeve inside, connecting rod one end is located the round hole, and fixed connection to cardboard after the other end. The utility model discloses reduce the machining precision and the assembly precision of axle sleeve and connecting axle, can guarantee the normal work of impeller, simple structure, simple to operate under lower precision.

Description

Impeller connecting shaft knot

Technical Field

The utility model relates to a link knot specifically is an impeller links knot.

Background

The impeller refers to a disk provided with moving blades, is a component of an impulse turbine rotor, and can also be a general name of the disk and the rotating blades arranged on the disk. The impellers can be classified according to shape and opening and closing conditions.

With the development of society and the continuous progress of aerodynamics, the development of impellers of various fans adopts more novel designs to obtain higher efficiency. The existing impeller is fixed on a shaft sleeve, and then the shaft sleeve and a rotating shaft are assembled, so that the transmission of torque is realized. In the process of impeller rotation, because the effect of centrifugal force, the axle sleeve can carry out radial jump along the pivot, influences the normal work of impeller, and for solving this problem, the machining precision and the assembly precision of axle sleeve and pivot all require highly, however, this again increases equipment cost.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the to-be-solved technical problem of the utility model is to provide an impeller links hub knot.

In order to solve the technical problem, the utility model provides a following technical scheme:

An impeller connecting shaft junction comprises an impeller, a shaft sleeve and a connecting shaft, wherein the impeller is fixedly connected to the outer circumferential surface of the shaft sleeve, a plurality of first key grooves are formed in the inner side wall of the shaft sleeve, the connecting shaft is assembled in the shaft sleeve, and a plurality of second key grooves are formed in the connecting shaft at positions corresponding to the first key grooves;

A plurality of round holes distributed along the axial direction of the shaft sleeve are also arranged in the shaft sleeve; the hole wall of one side of the round hole, which is close to the inside of the shaft sleeve, is provided with an opening through which the connecting rod can conveniently penetrate; one end of the connecting rod is located in the round hole, and the other end of the connecting rod penetrates through the hole and then is fixedly connected to the clamping plate.

As a further improvement of the utility model: the first key grooves are distributed on the inner wall of the shaft sleeve in an annular array.

as a further improvement of the utility model: and four second key grooves are distributed on the outer circumferential surface of the connecting shaft in an annular array.

As a further improvement of the utility model: the circular holes are four in the shaft sleeve and distributed in an annular array.

As a further improvement of the present invention: the connecting rod is connected with the clamping plate through welding.

as a further improvement of the present invention: the cardboard is the aluminum alloy material.

As a further improvement of the present invention: the inner wall of the shaft sleeve is provided with a clamping plate accommodating groove at a position corresponding to the clamping plate.

As a further improvement of the present invention: the size of the clamping plate accommodating groove is the same as that of the clamping plate.

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

the utility model discloses reduce the machining precision and the assembly precision of axle sleeve and connecting axle, can guarantee the normal work of impeller, simple structure, simple to operate under lower precision.

Drawings

FIG. 1 is a schematic structural view of an impeller coupling;

FIG. 2 is an enlarged view of the structure at A in an impeller coupling;

In the figure: the device comprises an impeller 1, a shaft sleeve 2, a connecting shaft 3, a first key groove 4, a second key groove 5, a flat key 6, a clamping plate 7, a clamping plate accommodating groove 8, a connecting rod 9, a circular hole 10 and a pin 11.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1-2, the present embodiment provides an impeller coupling shaft, which includes an impeller 1, a shaft sleeve 2 and a coupling shaft 3; the impeller 1 is fixedly connected to the outer circumferential surface of the shaft sleeve 2; a plurality of first key grooves 4 are formed in the inner side wall of the shaft sleeve 2; the connecting shaft 3 is assembled inside the shaft sleeve 2, and a plurality of second key grooves 5 are further formed in the connecting shaft 2 at positions corresponding to the first key grooves 4; the number of the first key grooves 4 and the second key grooves 5 is not limited, in this embodiment, preferably, four first key grooves 4 are distributed on the inner wall of the shaft sleeve 2 in an annular array, and four second key grooves 5 are distributed on the outer circumferential surface of the connecting shaft 3 in an annular array;

A plurality of round holes 10 distributed along the axial direction of the shaft sleeve 2 are also arranged in the shaft sleeve 2; the number of the circular holes 10 is not limited, and in this embodiment, preferably, four circular holes 10 are distributed in the shaft sleeve 2 in an annular array; the hole wall of one side of the round hole 10 close to the inside of the shaft sleeve 2 is provided with an opening through which the connecting rod 9 can conveniently penetrate; one end of the connecting rod 9 is positioned in the round hole 10, and the other end of the connecting rod passes through the opening and is fixedly connected to the clamping plate 7; the fixing mode of the connecting rod 9 and the clamping plate 7 is not limited, and in the embodiment, preferably, the connecting rod 9 and the clamping plate 7 are connected by welding; the material of the clamping plate 7 is not limited, and in this embodiment, preferably, the clamping plate 7 is made of an aluminum alloy;

The shaft sleeve 2 is sleeved into the connecting shaft 3, the first key groove 4 is aligned with the second key groove 5, and the first key groove 4 and the second key groove 5 are limited through the flat key 6, so that the transmission of torque is realized; the pin 11 is then used for being pinned into each round hole 10, so that the connecting rod 9 is extruded, the clamping plates 7 in the round holes 10 are driven to clamp the connecting shaft 3 from the side, and the phenomenon that when the connecting shaft 3 drives the shaft sleeve 2 to rotate, the shaft sleeve 2 is radially jumped due to insufficient machining precision of the shaft sleeve 2 and the connecting shaft 3, and normal work of the impeller is influenced is prevented;

example 2

Referring to fig. 2, in this embodiment, compared with embodiment 1, the inner wall of the shaft sleeve 2 and the position corresponding to the snap-gauge plate 7 are further provided with snap-gauge plate receiving grooves 8; the size of the clamping plate accommodating groove 8 is the same as that of the clamping plate 7, and the clamping plate 7 is positioned in the clamping plate accommodating groove 8 before the shaft sleeve 2 and the connecting shaft 3 are assembled.

The utility model discloses a theory of operation is: the shaft sleeve 2 is sleeved into the connecting shaft 3, the first key groove 4 is aligned with the second key groove 5, and the first key groove 4 and the second key groove 5 are limited through the flat key 6, so that the transmission of torque is realized; reuse pin 11 round pins go into in each round hole 10 to extrusion connecting rod 9 orders about cardboard 7 edgeways of each round hole 10 inside and carries out the chucking to connecting axle 3, prevents to drive the rotatory while of axle sleeve 2 at connecting axle 3, because of the machining precision of axle sleeve 2 and connecting axle 3 is not enough, leads to axle sleeve 2 to take place the runout, thereby influences the normal work of impeller.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. An impeller connecting shaft junction comprises an impeller (1), a shaft sleeve (2) and a connecting shaft (3), wherein the impeller (1) is fixedly connected to the outer circumferential surface of the shaft sleeve (2), a plurality of first key slots (4) are formed in the inner side wall of the shaft sleeve (2), the connecting shaft (3) is assembled inside the shaft sleeve (2), a plurality of second key slots (5) are formed in the connecting shaft (3) in positions corresponding to the first key slots (4), and the impeller connecting shaft junction is characterized in that,

A plurality of round holes (10) which are distributed along the axial direction of the shaft sleeve (2) are also arranged in the shaft sleeve (2); the hole wall of one side of the round hole (10) close to the inside of the shaft sleeve (2) is provided with a hole through which the connecting rod (9) can conveniently penetrate; one end of the connecting rod (9) is positioned in the round hole (10), and the other end of the connecting rod penetrates through the hole and then is fixedly connected to the clamping plate (7).

2. an impeller coupling according to claim 1, wherein four first keyways (4) are arranged in an annular array on the inner wall of the sleeve (2).

3. An impeller coupling according to claim 2, wherein four second keyways (5) are arranged in an annular array around the outer circumference of the coupling shaft (3).

4. An impeller coupling according to claim 3, characterized in that four of said circular holes (10) are arranged in an annular array inside the sleeve (2).

5. an impeller coupling according to any of claims 1-4, characterized in that the connecting rod (9) is connected to the clamping plate (7) by welding.

6. An impeller coupling according to claim 5, wherein the clamping plate (7) is made of an aluminum alloy.

7. An impeller coupling according to claim 1, wherein the inner wall of the sleeve (2) is further provided with a clamping plate receiving groove (8) at a position corresponding to the clamping plate (7).

8. An impeller coupling according to claim 7, wherein the size of the card receiving groove (8) is the same as that of the card (7).