Fan impeller mounting tool

By designing a tool for fan impeller installation, the rotational force of the screw thread is converted into axial pressure, the problem of rough installation and low accuracy in the prior art is solved, and the precise installation and propulsion of the impeller is achieved, which extends the service life of the motor and reduces the working strength.

CN222791936UActive Publication Date: 2025-04-25山西昆明烟草有限责任公司
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Patent Information

Application Number
CN202421552817.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-03
Publication Date
2025-04-25
Estimated Expiration
2034-07-03

AI Technical Summary

Technical Problem

When replacing the dust removal fan impeller, the existing technology requires manual thrust to push the impeller onto the motor shaft. The process is rough and accurate, which can easily cause damage to the machine impeller or motor bearings, resulting in a shortening of the motor service life.

Method used

A fan impeller installation tool is designed, including long bolts, positioning guide shafts, press sleeves and combined pressure glands that cooperate with the threaded holes of the motor shaft. The rotational force of the screw thread is converted into axial pressure to achieve precise installation and propulsion of the impeller.

Benefits of technology

The tooling installs the impeller with precise axial thrust, avoids damage to the motor, extends the service life, reduces the working strength of the staff, and effectively reduces the replacement time.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN222791936U_ABST
    Figure CN222791936U_ABST
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Abstract

The utility model relates to the technical field of fan assembly, and discloses a fan impeller mounting tool which comprises a long bolt matched with a threaded hole of a motor shaft, one end, far away from the head, of the long bolt is movably sleeved with a positioning guide shaft, and a pressing sleeve capable of penetrating through the positioning guide shaft is annularly sleeved on the long bolt; a fixing nut is screwed on the long bolt and located on the side, facing the head of the long bolt, of the positioning guide shaft. A combined gland with the outer diameter larger than that of the pressing sleeve is arranged at one end of the pressing sleeve and movably buckled on the long bolt, a propelling nut is screwed on the side, away from the pressing sleeve, of the combined gland, and a pressing pad arranged on the long bolt in a sleeving mode is arranged between the combined gland and the propelling nut. The tool avoids damage to the motor and prolongs the service life; and the working intensity of workers during replacement of the fan impeller is reduced, and the replacement time can be effectively shortened.
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Description

Technical Field

[0001] The utility model relates to the technical field of fan assembly, in particular to a fan assembly auxiliary tool, specifically a fan impeller installation tool. Background Art

[0002] At present, the fans of dust removal equipment are large and heavy. Whether replacing the motor or the impeller, the impeller needs to be installed on site. However, the working conditions on site are limited, and multiple people are required to install the impeller. Specifically, the impeller is manually hammered into the motor shaft with a hammer and a wooden pad. During the assembly process, due to insufficient precision and rough workmanship, the bearing is easily damaged, causing damage to the motor impeller or motor bearing, resulting in a shortened motor service life. In addition, the operation process is time-consuming and labor-intensive, which is not conducive to fan assembly. Summary of the invention

[0003] In order to solve the problems that when replacing the impeller on the dust removal fan, it is necessary to manually hammer the impeller to push it onto the motor shaft, the process is rough and the precision is low, which can easily cause damage to the impeller or the motor bearing, resulting in a shortened service life of the motor, and the like, the utility model provides a fan impeller installation tool.

[0004] The utility model is implemented by the following technical solutions:

[0005] A fan impeller installation tool comprises a long bolt matched with a threaded hole of a motor shaft, an end of the long bolt away from the head is movably sleeved with a positioning guide shaft, a pressing sleeve which can pass through the positioning guide shaft is sleeved on the long bolt; a fixing nut is screwed on the long bolt, and the fixing nut is located on the side of the positioning guide shaft facing the head of the long bolt; one end of the pressing sleeve is provided with a combined pressure cover with an outer diameter larger than the pressure cover, the combined pressure cover is movably buckled on the long bolt, a push nut is screwed on the side of the combined pressure cover away from the pressure cover, and a pressure pad sleeved on the long bolt is provided between the combined pressure cover and the push nut.

[0006] During implementation, it includes a long bolt that matches with the threaded hole of the motor shaft. The screw portion of the long bolt is screwed into the threaded hole of the free end face of the motor shaft and is used for guiding and connecting the tooling. A positioning guide shaft is movably sleeved at one end of the long bolt away from the head. A guide key that matches with the keyway of the motor shaft is provided on the upper part of the positioning guide shaft to prevent the impeller from rotating when it moves. The guide key is assembled axially through the keyway with the positioning screw, that is, the moving direction of the impeller. The positioning screw is sunk in the guide key. The upper part of the guide key matches with the keyway of the impeller hub to realize the positioning and guiding function of the impeller, so as to facilitate the impeller to enter the motor shaft.

[0007] A pressing sleeve is provided on the ring of the long bolt and can pass through the positioning guide shaft. The end face of the pressing sleeve pushes the impeller to move. A pair of positioning pins inserted into the impeller hub are provided on the side of the pressing sleeve facing the motor shaft to assist in positioning and further prevent the pressing sleeve and the positioning guide shaft from rotating. A groove for passing the guide key is provided on the pressing sleeve along the axial direction. A fixing nut is screwed onto the long bolt and is located on the side of the positioning guide shaft facing the head of the long bolt. The fixing nut fixes the positioning guide shaft to the end of the motor shaft.

[0008] One end of the pressing sleeve is provided with a combined pressure cover with an outer diameter larger than that of the pressing sleeve. The combined pressure cover pushes the pressing sleeve to move. The combined pressure cover is movably buckled on the long bolt. The combined pressure cover includes two pressure covers that are spliced ​​and buckled in opposite directions, which is convenient for flexible disassembly and assembly. The two pressure covers are installed by two completely identical connecting plates with pressure cover screws. The pressure cover screws and positioning screws are both M6 screws. The pressure cover includes a first pressure cover and a second pressure cover. A groove for passing the long bolt is opened on the splicing and buckling edges of the two pressure covers. Each pressure cover has two screw holes on both sides of the groove. A connecting plate is installed between the screw hole on the first pressure cover and the corresponding screw hole on the second pressure cover.

[0009] A thrust nut is screwed onto the side of the combined gland away from the pressure sleeve. The thrust nut rotates on the long bolt and realizes axial thrust on the impeller through the pressure pad, the combined gland and the pressure sleeve. A pressure pad mounted on the long bolt is provided between the combined gland and the thrust nut. The outer diameter of the pressure pad is smaller than the distance between the connecting plate assembled on the gland and the center of the combined gland. Even if the thrust nut directly pushes the gland through the pressure pad, damage to the tooling caused by local force can be avoided.

[0010] When in use, first pre-align the impeller with the motor shaft through hoisting and hang it to the installation position, screw or set the push nut, pressure pad, fixing nut, and positioning guide shaft on the long bolt in sequence, and pass them through the impeller hub installation hole together. The screw part of the long bolt is screwed into the threaded hole of the motor shaft, and the positioning guide shaft is inserted into the keyway of the motor shaft through the guide key. At this time, the front end of the guide key is clamped in the keyway of the motor shaft and positioned at the end of the motor shaft. The fixing nut is screwed to fix the positioning guide shaft to the end of the motor shaft; the impeller hub keyway is aligned with the guide shaft keyway, and the impeller is pushed to When positioning the guide shaft, the impeller is mounted on the outside of the positioning guide shaft. At this time, the guide key is inserted into the keyway of the impeller hub. The impeller is accurately aligned with the motor shaft through the guide key. The press sleeve is inserted into the long bolt from the head of the long bolt. The groove on the top of the press sleeve is aligned with the guide key. At the same time, two locating pins are inserted into the impeller hub. The press sleeve does not rotate relative to the impeller. The first pressure cover and the second pressure cover are spliced ​​and buckled so that the combined pressure cover is mounted on the long bolt, and the two connecting plates are screwed and fixed with the pressure cover screws so that the pressure cover is spliced ​​and installed between the pressure sleeve and the pressure pad to complete the tooling installation.

[0011] When pushing forward, screw in the pushing nut so that the pressure pad pushes the combined pressure cover, the combined pressure cover does not rotate, the combined pressure cover pushes the pressure sleeve, and the pressure sleeve pushes the impeller to move axially toward the motor shaft, and then install it in place.

[0012] When disassembling the tooling, loosen the push nut, loosen the gland screw and remove the connecting plate, thereby disassembling the combined gland, withdraw the compression sleeve from the long bolt, loosen the fixing nut, unscrew the long bolt, remove the long bolt, push nut, pressure washer, fixing nut, and positioning guide shaft together, and the tooling disassembly is completed.

[0013] Install the original key of the fan impeller into the keyway of the motor shaft and the keyway of the impeller hub, and the installation is completed.

[0014] Compared with the prior art, this application has the following beneficial effects:

[0015] The utility model provides a fan impeller installation tool, which converts the rotational force of the screw thread into axial pressure. During installation, the impeller is pushed onto the motor shaft by rotation, thereby achieving installation of the impeller to the motor shaft, avoiding damage to the motor and extending the service life; reducing the work intensity of the staff when replacing the fan impeller, and can effectively reduce the replacement time. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram showing the overall structure of the device.

[0017] Figure 2 This shows an exploded view of the device.

[0018] Figure 3 This is an exploded view showing the device in its assembled state.

[0019] In the figure: 1-long bolt, 2-advance nut, 3-pressure pad, 4-combined pressure cover, 401-first pressure cover, 402-second pressure cover, 403-connecting plate, 404-pressure cover screw, 5-pressure sleeve, 6-fixing nut, 7-positioning guide shaft, 701-guide key, 702-positioning screw, 8-impeller, 9-motor shaft, 10-positioning pin. DETAILED DESCRIPTION

[0020] The present invention will be described below in conjunction with specific embodiments.

[0021] A fan impeller installation tool, such as Figures 1 to 3As shown: it includes a long bolt 1 that matches the threaded hole of the motor shaft, the screw portion of the long bolt 1 is screwed into the threaded hole on the free end face of the motor shaft 9, and is used for guiding and connecting the tooling, and a positioning guide shaft 7 is movably sleeved on one end of the long bolt 1 away from the head, and a guide key 701 that matches the keyway of the motor shaft is provided on the upper part of the positioning guide shaft 7 to prevent the impeller 8 from rotating when it moves, and the guide key 701 is assembled axially through the keyway with the positioning screw 702, that is, the moving direction of the impeller 8, and the positioning screw 702 is sunk in the guide key 701, and the upper part of the guide key 701 matches the keyway of the impeller hub to realize the positioning and guiding function of the impeller 8, so as to facilitate the impeller 8 to enter the motor shaft 9;

[0022] A pressing sleeve 5 is provided on the long bolt 1 and can pass through the positioning guide shaft 7. The end surface of the pressing sleeve 5 pushes the impeller 8 to move. A pair of positioning pins 10 inserted into the impeller hub are provided on the side of the pressing sleeve 5 facing the motor shaft 9, which play an auxiliary positioning role and further prevent the pressing sleeve 5 and the positioning guide shaft 7 from rotating. A groove for passing the guide key 701 is provided on the pressing sleeve 5 along the axial direction; a fixing nut 6 is screwed on the long bolt 1, and the fixing nut 6 is located on the side of the positioning guide shaft 7 facing the head of the long bolt 1. The fixing nut 6 fixes the positioning guide shaft 7 to the end of the motor shaft 9;

[0023] One end of the pressing sleeve 5 is provided with a combined pressure cover 4 with an outer diameter larger than that of the pressing sleeve 5. The combined pressure cover 4 pushes the pressing sleeve 5 to move. The combined pressure cover 4 is movably buckled on the long bolt 1. The combined pressure cover 4 includes two pressure covers spliced ​​and buckled in opposite directions, which is convenient for flexible disassembly and assembly. The two pressure covers are installed by two completely identical connecting plates 403 and pressure cover screws 404. The pressure cover screws 404 and the positioning screws 702 are both M6 screws. The pressure cover includes a first pressure cover 401 and a second pressure cover 402. A groove for passing the long bolt 1 is opened on the splicing and buckling edges of the two pressure covers. Two screw holes are opened on each pressure cover on both sides of the groove. A connecting plate 403 is installed between the screw hole on the first pressure cover 401 and the corresponding screw hole on the second pressure cover 402.

[0024] A thrust nut 2 is screwed onto the side of the combined gland 4 facing away from the pressing sleeve 5. The thrust nut 2 rotates on the long bolt 1 and realizes an axial thrust on the impeller 8 through the pressure pad 3, the combined gland 4 and the pressing sleeve 5. A pressure pad 3 sleeved on the long bolt 1 is provided between the combined gland 4 and the thrust nut 2. The outer diameter of the pressure pad 3 is smaller than the distance between the connecting plate assembled on the gland and the center of the circle of the combined gland 4. Even if the thrust nut 2 directly pushes the gland through the pressure pad 3, damage to the tooling caused by local force can be avoided.

[0025] When in use, first pre-align the impeller 8 with the motor shaft 9 through hoisting and hang it to the installation position, screw or sleeve the push nut 2, the pressure pad 3, the fixing nut 6, and the positioning guide shaft 7 onto the long bolt 1 in sequence, and pass through the impeller hub installation hole together. The screw portion of the long bolt 1 is screwed into the threaded hole of the motor shaft, and the positioning guide shaft 7 is inserted into the motor shaft keyway through the guide key 701. At this time, the front end of the guide key 701 is clamped in the motor shaft keyway and positioned at the end of the motor shaft 9. The fixing nut 6 is screwed to fix the positioning guide shaft 7 to the end of the motor shaft 9; the impeller hub keyway is aligned with the guide shaft keyway, and the impeller 8 is pushed toward the positioning guide shaft 7, so that The impeller 8 is mounted on the outside of the positioning guide shaft 7. At this time, the guide key 701 is clamped in the keyway of the impeller hub. The impeller 8 is accurately aligned with the motor shaft 9 through the guide key 701. The pressing sleeve 5 is inserted into the long bolt 1 from the head of the long bolt 1. The groove on the top of the pressing sleeve 5 is opposite to the guide key 701. At the same time, two positioning pins 10 are inserted into the impeller hub. The pressing sleeve 5 does not rotate relative to the impeller 8. The first pressure cover 401 and the second pressure cover 402 are spliced ​​and buckled, so that the combined pressure cover 4 is mounted on the long bolt 1, and the two connecting plates 403 are screwed and fixed with the pressure cover screws 404, so that the pressure cover is spliced ​​and installed between the pressure sleeve 5 and the pressure pad 3, and the tooling installation is completed.

[0026] When advancing, screw in the advancing nut 2, so that the pressure pad 3 pushes the combined pressure cover 4, the combined pressure cover 4 does not rotate, the combined pressure cover 4 pushes the pressure sleeve 5, and the pressure sleeve 5 pushes the impeller 8 to move axially toward the motor shaft 9, and it can be installed in place.

[0027] When disassembling the tooling, loosen the push nut 2, loosen the pressure cover screw 404 and remove the connecting plate 403, thereby disassembling the combined pressure cover 4, withdraw the pressure sleeve 5 from the long bolt 1, loosen the fixing nut 6, unscrew the long bolt 1, remove the long bolt 1, the push nut 2, the pressure pad 3, the fixing nut 6, and the positioning guide shaft 7 together, and the tooling is disassembled.

[0028] Install the original key of the fan impeller 8 into the keyway of the motor shaft and the keyway of the impeller hub, and the installation is completed.

[0029] The scope of protection claimed by the present invention is not limited to the above specific implementation methods. For those skilled in the art, the present invention may have various deformations and changes. Any modification, improvement and equivalent substitution made within the concept and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fan impeller installation tool, characterized in that: It comprises a long bolt (1) which cooperates with the threaded hole of the motor shaft, the end of the long bolt (1) away from the head is movably sleeved with a positioning guide shaft (7), and the long bolt (1) is sleeved with a pressing sleeve (5) which can pass through the positioning guide shaft (7); a fixing nut (6) is screwed onto the long bolt (1), and the fixing nut (6) is located on the side of the positioning guide shaft (7) facing the head of the long bolt (1); A combined gland (4) having an outer diameter greater than that of the gland (5) is provided at one end of the gland (5); the combined gland (4) is movably mounted on the long bolt (1); a push nut (2) is screwed onto the side of the combined gland (4) facing away from the gland (5); a pressure pad (3) sleeved on the long bolt (1) is provided between the combined gland (4) and the push nut (2).

2. A fan impeller installation tool according to claim 1, characterized in that: The combined gland (4) comprises two glands that are spliced ​​and fastened together facing each other, and the two glands are mounted via two identical connecting plates (403) in conjunction with gland screws (404).

3. A fan impeller installation tool according to claim 2, characterized in that: The gland comprises a first gland (401) and a second gland (402), a groove for passing a long bolt (1) is formed on the joint edges of the two glands, two screw holes are formed on each gland at two sides of the groove, and a connecting plate (403) is installed between the screw holes on the first gland (401) and the corresponding screw holes on the second gland (402).

4. The fan impeller installation tool according to claim 2, characterized in that: The upper portion of the positioning guide shaft (7) is provided with a guide key (701) that cooperates with the keyway of the motor shaft. The guide key (701) is assembled axially through the keyway and the positioning screw (702). The upper portion of the guide key (701) cooperates with the keyway of the impeller hub.

5. The fan impeller installation tool according to claim 4, characterized in that: A pair of positioning pins (10) inserted into the impeller hub are provided on the side of the pressing sleeve (5) facing the motor shaft (9), and a groove through which the guide key (701) passes is provided on the pressing sleeve (5) along the axial direction.

6. The fan impeller installation tool according to claim 3, characterized in that: The outer diameter of the pressure pad (3) is smaller than the distance between the center of the connecting plate assembled on the pressure cover and the combined pressure cover (4).

7. The fan impeller installation tool according to claim 4, characterized in that: The gland screw (404) and positioning screw (702) are both M6 screws.