CN216681995U

CN216681995U - Fan wheel extracting tool

Info

Publication number: CN216681995U
Application number: CN202121771211.7U
Authority: CN
Inventors: 李桥明; 刘宇辉; 文辉; 王红亮; 许杰伟; 张文军; 田雨升
Original assignee: Shaoguan Pingshi Power Plant Co ltd B Factory
Current assignee: Shaoguan Pingshi Power Plant Co ltd B Factory
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-06-07
Anticipated expiration: 2031-07-30

Abstract

The utility model relates to a fan impeller dismounting tool, which comprises a positioning piece and an ejector rod; the positioning piece comprises a first positioning piece and a second positioning piece matched with the first positioning piece; the end part of one end of the positioning piece is provided with a threaded hole; the ejector rod penetrates through the positioning piece through the threaded hole and is in threaded connection with the part in contact with the positioning piece; the cross section profile of the positioning piece is matched with the groove at the shaft head of the fan impeller. The first positioning piece comprises a first shell, a first positioning sleeve, a first positioning ring and a threaded hole piece. The second positioning part comprises a second shell, a second positioning ring and a second positioning sleeve. The disassembling tool can avoid equipment damage in the process of disassembling the fan impeller, reduce labor intensity and improve maintenance work efficiency; in addition, the disassembling tool is low in manufacturing cost, low in price and simple to use and operate.

Description

Fan wheel extracting tool

Technical Field

The utility model relates to the technical field of disassembling tools, in particular to a disassembling tool for a fan impeller.

Background

The fan is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. The blower is a Chinese habit abbreviation for gas compression and gas conveying machinery, and the blower generally comprises a ventilator, a blower and a wind driven generator.

The condition that the impeller needs to be disassembled is often met in the maintenance of the fan, and the condition that the maintenance time is prolonged because the impeller is difficult to disassemble often occurs, so that the normal use is influenced. When dismantling the impeller, according to impeller wheel hub's aperture size and fit tolerance, generally adopt three kinds of dismantlements modes: 1. heating method: the impeller hub is heated to generate a gap between the hub and the impeller shaft, so that the impeller is dismantled. 2. Pressing out by a press: in general, a blower user does not have a press machine, and the press machine needs to be transported and is not suitable for on-site first-aid repair; 3. two long bolts are screwed on the impeller hub at the dismounting holes, the tail ends of the two long bolts are connected with a jack base bracket and are ejected out by a jack: the method takes time for adjustment and assembly, once the length of the bolt is not well adjusted, the bolt can be inclined and/or bent and deformed, and even the hub assembling and disassembling hole is broken. In addition, when the diameter of the hub of the impeller is small, the jack cannot be used, the tail ends of the two long bolts can be connected with the top plate, the nuts are welded on the top plate, the bolts are used for jacking, the impeller and the shaft of the impeller can rotate along with each other due to the fact that the bolts need to be rotated, the bolt jacking is limited by equipment, the method of pinning the impeller is often adopted, the bolts jack in, and the impeller is damaged due to the fact that the impeller is pinned.

The methods have the defects of complicated disassembly process, complex structure of the disassembly tool and need of equipment such as a jack and the like.

Therefore, it is necessary to design a fan impeller dismounting tool with simple structure and convenient operation to solve the above defects and difficulties.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a fan impeller dismounting tool which is simple in structure and convenient to operate, can avoid equipment damage in the fan impeller dismounting process, reduces labor intensity and improves maintenance work efficiency.

The technical purpose of the utility model is realized by the following technical scheme: a fan impeller dismounting tool comprises a positioning piece and an ejector rod;

the positioning piece comprises a first positioning piece and a second positioning piece matched with the first positioning piece;

the end part of one end of the positioning piece is provided with a threaded hole, and an inner hole at the other end of the positioning piece extends inwards to form a positioning ring;

the ejector rod penetrates through the positioning piece through the threaded hole and is in threaded connection with the part in contact with the positioning piece;

the cross-sectional shape of the positioning piece is matched with the groove at the shaft head of the fan impeller.

In one embodiment, the first positioning element comprises a first shell, a first positioning sleeve fixed at one end of the inner wall of the first shell, and a threaded hole element fixed at the end part of the outer end of the first positioning sleeve, and a first positioning ring extends inwards from the port at the other end of the inner wall of the first shell.

In one embodiment, the second positioning element comprises a second shell and a second positioning sleeve fixed in the middle of the inner wall of the second shell, and a second positioning ring extends inwards from a port at one end of the inner wall of the second shell;

the retaining ring includes the first retaining ring and the second retaining ring.

In one embodiment, the first housing and the second housing are the same in shape and size.

In one embodiment, the end of the ejector rod far away from one end of the threaded hole piece is provided with a handle.

In one embodiment, the first positioning sleeve and the second positioning sleeve are the same in shape and size.

In one embodiment, the diameter of the shaft hole formed in the center of the first positioning sleeve and the diameter of the shaft hole formed in the center of the second positioning sleeve are both larger than the diameter of the ejector rod.

In conclusion, the utility model has the following beneficial effects:

the first positioning piece and the second positioning piece are installed at the groove of the shaft head of the fan impeller, the positioning piece is fixed on the impeller through the upper nut, and then the ejector rod penetrates through the positioning piece through the threaded hole to enable the ejector rod to be ejected to the shaft head of the fan impeller. Then, the ejector rod is utilized, the first positioning piece and the second positioning piece are installed at the groove of the shaft head of the fan impeller, the first positioning piece and the second positioning piece tightly hold the groove of the shaft head of the fan impeller, then the wrench is sleeved at the end part of the other end of the ejector rod by one person and rotates, the wrench is screwed to enable the ejector rod to move towards the shaft head of the fan impeller, the impeller and the shaft are loosened under the action of external force, the shaft moves towards the moving direction of the ejector rod, the shaft at the shaft head of the fan is ejected out little by little, and in the process, the wrench needs to be screwed continuously until the shaft is taken out of the fan impeller, and the purpose of detaching the middle shaft of the fan impeller is achieved. The disassembling tool can avoid equipment damage in the process of disassembling the fan impeller, reduce labor intensity and improve maintenance work efficiency; in addition, the disassembling tool is low in manufacturing cost, low in price and simple to use and operate.

Drawings

FIG. 1 is a schematic structural view of a fan wheel removal tool provided in the present invention;

FIG. 2 is a schematic structural view of a first positioning member provided in the present invention;

FIG. 3 is a schematic structural diagram of a second positioning element provided in the present invention;

FIG. 4 is a cross-sectional schematic view of a fan wheel removal tool provided by the present invention;

FIG. 5 is a schematic view of the present invention providing a shaft for use in a fan wheel using a removal tool.

In the figure: 1-a positioning element; 11-a first positioning member; 111-a first housing; 112-a first position sleeve; 113-threaded bore; 12-a second positioning element; 121-a second housing; 122-a second locating sleeve; 13-a threaded hole; 14-a positioning ring; 141-a first positioning ring; 142-a second positioning ring; 2-a top rod; 21-a handle; 3-a groove is formed in the shaft head of the fan impeller; 4-a shaft head.

Detailed Description

The utility model is described in detail below with reference to the figures and examples.

It should be noted that all the directional terms such as "upper" and "lower" referred to herein are used with respect to the view of the drawings, and are only for convenience of description, and should not be construed as limiting the technical solution.

See fig. 1 and 4

The utility model provides a fan impeller dismounting tool which comprises a positioning piece 1 and an ejector rod 2;

comprises a positioning piece 1 and a top rod 2; the positioning piece 1 comprises a first positioning piece 11 and a second positioning piece 12 matched with the first positioning piece 11; the end part of one end of the positioning piece 1 is provided with a threaded hole 13, and an inner hole of the other end of the positioning piece 1 extends inwards to form a positioning ring 14; the mandril 2 passes through the positioning piece 1 through the threaded hole 13 and is in threaded connection with the part contacted with the positioning piece 1; the cross-sectional shape of the positioning piece 1 is matched with the groove at the shaft head of the fan impeller. The positioning piece 1 is butted with a groove at the shaft head of the fan impeller, and the cross section of the positioning piece 1 is matched with the groove at the shaft head of the fan impeller. The first positioning piece 11 is matched with the second positioning piece 12 to form a shape matched with the groove at the shaft head of the fan impeller. The first positioning piece 11 and the second positioning piece 12 are clamped at a groove at the shaft head of the fan impeller, and after the positioning piece is installed, the ejector rod 2 penetrates through the positioning piece 1 through the threaded hole 13. The outer wall of the ejector rod 2 is provided with threads which are matched with the threaded holes 13. The disassembling tool can avoid equipment damage in the process of disassembling the fan impeller, reduce labor intensity and improve maintenance work efficiency; in addition, the disassembling tool is low in manufacturing cost, low in price and simple to use and operate.

See fig. 1 and 2

Preferably, the first positioning member 11 includes a first housing 111, a first positioning sleeve 112 fixed on one end of the inner wall of the first housing 111, and a threaded hole member 113 fixed on the outer end of the first positioning sleeve 112, wherein a first positioning ring 141 extends inwards from a port at the other end of the inner wall of the first housing 111. The first housing 111 has a semicircular ring shape. A hole for the ejector rod 2 to pass through is formed in the middle of the first positioning sleeve 112, and the first positioning sleeve 112 is fixed at one end of the inner wall of the first shell 111 through welding. The threaded bore member 113 is fixed at the end of the outer end of the first sleeve 112 by welding. The threaded hole member 113 is provided with a threaded hole 13 in the middle. The threaded hole at the threaded hole piece 113 is in fit connection with the thread at the outer wall of the mandril 2. When the ejector rod 2 passes through the first positioning sleeve 112 through the threaded hole 13, the first positioning sleeve 112 can play a positioning and guiding role for the ejector rod 2, so that the ejector rod 2 is prevented from deviating from a hole in the middle of the positioning piece 1 in the process of passing through the positioning piece 1.

See fig. 2 and 3

Preferably, the first housing 111 is semi-annular. The second positioning member 12 includes a second housing 121, and a second positioning sleeve 122 fixed at the middle portion of the inner wall of the second housing 121, wherein a second positioning ring 142 extends inwards from a port of an inner wall of the second housing 121; the positioning ring 14 includes a first positioning ring 141 and a second positioning ring 142. The first positioning ring 141 and the second positioning ring 142 are cut from the integrated positioning ring 14. During the disassembly process, the first positioning ring 141 and the second positioning ring 142 are integrated into a whole for disassembly. The first positioning ring 141 and the second positioning ring 142 are detachably and integrally connected. Similarly, the first positioning element 11 and the second positioning element 12 are also integrated into a whole for disassembly during the disassembly process.

The first casing 111 and the second casing 121 are combined to form a hollow circular cylinder which is matched with a groove at the position of the fan impeller. The positioning ring 14 is used for fixing the positioning piece 1 on the fan impeller, and the ejector rod 2 is screwed after the positioning piece is fixed, so that the shaft on the fan can be detached from the fan impeller, and the operation is simple and convenient.

Preferably, the first housing 111 and the second housing 121 are the same in shape and size, so that the manufacturing cost of a reinforcement tool can be reduced, the fitting is simpler and more convenient, and installation errors are not easy to occur.

Preferably, the end of the stem 2 remote from the threaded bore 113 is provided with a handle 21. The handle 21 makes it easier to rotate the carrier rod 2.

Preferably, the threaded bore member 113 is a nut. The threaded hole member 113 is engaged with a thread at the outer wall of the ram 2 for causing a forward or backward displacement of the ram 2. In the advancing process, the ejector rod 2 ejects the shaft at the shaft head of the fan impeller, so that the purpose of ejecting the shaft at the shaft head of the fan impeller is realized.

Preferably, the first and

second positioning sleeves

112, 122 are both the same size and shape. The outer profile of the first sleeve 112 may be one of circular or square. The outer profile of the second position sleeve 122 may be one of circular or square. The diameter of the shaft hole formed in the center of the first positioning sleeve 112 and the diameter of the shaft hole formed in the center of the second positioning sleeve 122 are both larger than the diameter of the push rod 2. The processing and manufacturing of the ring body are simple and convenient, and the cost is low. The rod 2 is a screw. The screw rod is a common part, so that the purchase is convenient, and the replacement is very simple and convenient.

The mounting process of the dismounting tool is as follows: the first positioning piece 11 and the second positioning piece 12 are arranged at the groove of the shaft head of the fan impeller, the positioning piece 1 is fixed on the impeller by the upper nut, and then the ejector rod 2 is arranged on the positioning piece 1 through the threaded hole 13, so that one end of the ejector rod 2 is abutted to the shaft head of the fan impeller. At this moment, the first positioning piece 11 and the second positioning piece 12 form a whole, the positioning piece 1 is tightly held in the groove at the shaft head of the fan impeller, and thus, the installation of the disassembling tool is completed.

See FIG. 5

The process of this extracting tool's dismantlement fan axle does:

the first positioning piece 11 and the second positioning piece 12 are installed at a groove of a shaft head of a fan impeller, then the positioning piece 1 is fixed on the impeller through nuts, and then the ejector rod 2 penetrates through the positioning piece 1 through the threaded hole 13, so that the ejector rod 2 is ejected to the shaft head of the fan impeller. Then, by using the ejector rod 2, the first positioning piece 11 and the second positioning piece 12 are installed at the groove of the shaft head of the fan impeller, the first positioning piece 11 and the second positioning piece 12 tightly hold the groove of the shaft head of the fan impeller, then the wrench is sleeved at the end part of the other end of the ejector rod 2 and rotates, the wrench is screwed to enable the ejector rod 2 to move towards the direction of the fan impeller, the impeller and the shaft are loosened under the action of external force, the shaft moves towards the moving direction of the ejector rod 2, the shaft at the shaft head of the fan is ejected out little by little, and in the process, the wrench needs to be screwed continuously until the shaft is taken out of the fan impeller, so that the purpose of detaching the middle shaft of the fan impeller is achieved.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. The utility model provides a fan wheel extracting tool which characterized in that:

comprises a positioning piece (1) and a top rod (2);

the positioning piece (1) comprises a first positioning piece (11) and a second positioning piece (12) matched with the first positioning piece (11);

a threaded hole (13) is formed in the end part of one end of the positioning piece (1), and a positioning ring (14) extends inwards from the inner hole of the other end of the positioning piece (1);

the ejector rod (2) penetrates through the positioning piece (1) through the threaded hole (13), and is in threaded connection with the part in contact with the positioning piece (1);

the cross-sectional shape of the positioning piece (1) is matched with the groove at the shaft head of the fan impeller.

2. The fan wheel removal tool of claim 1, wherein:

first locating piece (11) include first casing (111), are fixed in first position sleeve (112) of first casing (111) inner wall one end and be fixed in screw hole spare (113) of first position sleeve (112) outer end tip, the port department of the first casing (111) inner wall other end extends inwards has first retaining ring (141).

3. The fan wheel removal tool of claim 2, wherein:

the second positioning part (12) comprises a second shell (121) and a second positioning sleeve (122) fixed in the middle of the inner wall of the second shell (121), and a second positioning ring (142) extends inwards from one end port of the inner wall of the second shell (121);

the positioning ring (14) comprises the first positioning ring (141) and the second positioning ring (142).

4. The fan wheel removal tool of claim 3, wherein:

the first housing (111) and the second housing (121) are the same in shape and size.

5. The fan wheel removal tool of claim 4, wherein:

and a handle (21) is arranged at the end part of one end of the ejector rod (2) far away from the threaded hole piece (113).

6. The fan wheel removal tool of claim 5, wherein:

the first positioning sleeve (112) and the second positioning sleeve (122) are the same in shape and size.

7. The fan wheel removal tool of claim 6, wherein:

the diameter of the central shaft hole of the first positioning sleeve (112) and the diameter of the central shaft hole of the second positioning sleeve (122) are both larger than the diameter of the ejector rod (2).