Shafted fan impeller dismounting tool

Abstract

This disclosure relates to the technical field of wind turbine impeller disassembly tools, and in particular provides a shaft-mounted wind turbine impeller disassembly tool, including a base, a locking structure disposed on one side of the base, and a handheld structure disposed on the other side of the base; the locking structure includes two opposing locking members, one end of each locking member being connected to the base, and recessed grooves are formed on the opposing surfaces of the two locking members to form locking protrusions on the side of the recessed grooves away from the base; the two locking members can move relative to the base toward each other or toward each other to adjust the distance between the two locking protrusions, so that the two locking protrusions engage in an annular groove; the handheld structure is a rod-shaped structure extending along the axial direction of the shaft-mounted wind turbine, and the axial length of the handheld structure is adjustable, thereby improving disassembly efficiency, reducing labor costs, and making the disassembly tool applicable to disassembling wind turbine impellers of different sizes.

Description

Technical Field

[0001] This disclosure relates to the field of wind turbine impeller disassembly tools, and in particular to a shaft-mounted wind turbine impeller disassembly tool. Background Technology

[0002] A shaft-driven fan includes an impeller, a main shaft, and a motor. The impeller includes a hub and blades mounted on the hub. Specifically, the hub is connected to the main shaft, and the main shaft is connected to the motor. When the motor is powered on, it drives the main shaft to rotate, which in turn causes the impeller to rotate rapidly under the drive of the main shaft.

[0003] After prolonged use or when the fan malfunctions, the impeller needs to be disassembled for replacement or repair. The current technology for disassembling the impeller typically involves multiple workers holding the hub and applying outward pulling force to remove it. However, this method results in high labor costs and low disassembly efficiency. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this disclosure provides a shaft-mounted fan impeller disassembly tool to improve the impeller disassembly efficiency and save labor costs.

[0005] This disclosure provides a shaft-mounted fan impeller disassembly tool, wherein the impeller includes a hub and blades connected to the hub, and an annular groove extending circumferentially along the axial end of the hub is provided.

[0006] The shaft-mounted fan impeller disassembly tool includes a base, a locking structure on one side of the base, and a handheld structure on the other side of the base;

[0007] The engaging structure includes two opposing engaging members, one end of each engaging member being connected to the base. Each engaging member has a recessed groove on its opposing surface to form an engaging protrusion on the side of the recessed groove away from the base. The two engaging members can move relative to the base towards each other or away from each other to adjust the distance between the two engaging protrusions, allowing them to engage in the annular groove.

[0008] The handheld structure is a rod-shaped structure extending along the axial direction of the shaft-mounted fan, and the axial length of the handheld structure is adjustable.

[0009] Optionally, the base is provided with a sliding groove, one end of the engaging member extends into the sliding groove and can slide along the extension direction of the sliding groove so that the two engaging members move closer or further apart from each other;

[0010] The base is also provided with a fastening structure, which is used to fix the engaging component when the engaging component moves to a preset position.

[0011] Optionally, the slide groove includes two slide groove sections, which are arranged at intervals on the base. One engaging member corresponds to one slide groove section, and the two slide groove sections are respectively located on both sides of the projection of the handheld structure on the base.

[0012] Optionally, the engaging component includes a main body and a mating portion located on the side of the main body near the base;

[0013] The engaging protrusion is formed on the side of the main body away from the mating portion;

[0014] The outer contour of the projection of the mating part on the base is located inside the outer contour of the projection of the main body part on the base; the mating part extends into the groove and slides in contact with the groove.

[0015] Optionally, the fastening structure includes fastening bolts and abutment plates;

[0016] One end of the engaging member is provided with a fastening hole, the abutting plate abuts against the other side of the base and covers the sliding groove, and the abutting plate is provided with a clearance hole at the position corresponding to the fastening hole. The stud of the fastening bolt passes through the clearance hole and is threadedly connected to the fastening hole.

[0017] Optionally, the handheld structure includes a hollow handheld tube and a movable rod that can move axially relative to the handheld tube;

[0018] One end of the handheld tube is connected to the other side of the base. The movable rod is disposed inside the handheld tube, and the end of the handheld tube away from the base is open, so that the movable rod can extend out of the handheld tube from the open or retract into the handheld tube from the open.

[0019] Optionally, the movable rod is a threaded rod, and the inner wall of the hand-held cylinder is provided with an internal thread that is threaded to the threaded rod;

[0020] And / or, the end of the movable rod away from the base has an operating disc, the outer diameter of which is larger than the outer diameter of the movable rod.

[0021] Optionally, a guide structure for guiding the movable rod is further provided between the movable rod and the handheld tube.

[0022] Optionally, the guide structure includes a guide groove disposed on the wall of the handheld tube and a guide rod disposed on the movable rod;

[0023] The guide groove extends along the axial direction of the handheld tube, the guide rod is located in the guide groove and can slide along the guide groove; an annular connecting plate is sleeved on the movable rod, and the movable rod can rotate relative to the annular connecting plate, and the guide rod is connected to the annular connecting plate.

[0024] Optionally, there are two guide grooves, which are respectively located on both sides of the handheld tube;

[0025] There are two guide rods, one guide rod corresponds to one guide groove; one end of each guide rod is connected to the annular connecting plate, and the other end of each guide rod extends into the corresponding guide groove.

[0026] The shaft-mounted fan impeller disassembly tool disclosed herein features a base with a locking structure on one side and a handheld structure on the other. The locking structure comprises two opposing locking members, one end of which is connected to the base. Each locking member has a recessed groove on its opposing surface, forming a locking protrusion on the side of the groove furthest from the base. This allows the two locking members to move relative to the base in a direction that moves closer or further apart, adjusting the distance between the two locking protrusions so that they engage with an annular groove. When impeller disassembly is required, simply adjust the distance between the two locking protrusions until they engage with the annular groove of the impeller hub, then hold the handheld structure and apply outward pulling force to disassemble the hub. This method allows for hub disassembly without the need for multiple personnel, reducing labor costs and improving disassembly efficiency.

[0027] Meanwhile, because the distance between the two engaging protrusions is adjustable, this shaft-mounted fan impeller disassembly tool can be used to disassemble impellers of different diameters, increasing its applicability and ease of use. Furthermore, the adjustable distance between the two engaging parts allows the tool to better adapt to and operate in confined spaces.

[0028] Moreover, since the engaging protrusion is formed by creating a recessed groove on the inner side of the engaging component, compared with the solution of directly setting a protrusion on the inner wall of the engaging component, this disclosure, while achieving matching and engaging between the engaging protrusion and the annular groove, also saves space occupied by the disassembly tool to a certain extent, which is conducive to the miniaturization of the disassembly tool and makes it convenient to carry and use.

[0029] Furthermore, by designing the handheld structure as a rod-like structure extending axially along the fan shaft, and with adjustable axial length, the length of the handheld structure can be easily adjusted, making the disassembly tool easier for operators to use and thus improving its usability. Moreover, it allows operators to adjust the length of the handheld structure according to the available space, making it easier to operate in confined spaces, further enhancing the tool's ease of use and applicability.

[0030] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description

[0031] The above and other objects, features, and advantages of this disclosure will become more apparent from the more detailed description of the embodiments thereof in conjunction with the accompanying drawings. The drawings are provided to further illustrate the embodiments of this disclosure and form part of the specification. They are used together with the embodiments of this disclosure to explain the disclosure and do not constitute a limitation thereof. In the drawings, the same reference numerals generally represent the same components or steps.

[0032] Figure 1 This is a schematic diagram of the structure of a shaft-mounted fan impeller disassembly tool provided in an embodiment of the present disclosure;

[0033] Figure 2 This is an exploded view of a shaft-mounted fan impeller disassembly tool provided in an embodiment of this disclosure;

[0034] Figure 3 This is a schematic diagram of the base and handheld structure in a shaft-mounted fan impeller disassembly tool provided in an embodiment of the present disclosure.

[0035] Among them, 1. base; 11. slide groove; 111. slide groove section; 2. locking structure; 21. locking part; 211. main body; 212. mating part; 213. fastening hole; 22. recessed groove; 23. locking protrusion; 3. fastening structure; 31. fastening bolt; 32. abutment plate; 321. clearance hole; 4. hand-held structure; 41. hand-held tube; 42. movable rod; 421. operating panel; 43. guide structure; 431. guide groove; 432. guide rod; 433. annular connecting plate. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this disclosure more apparent, exemplary embodiments according to this disclosure will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this disclosure, and not all embodiments of this disclosure. It should be understood that this disclosure is not limited to the exemplary embodiments described herein.

[0037] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below. It should be noted that the concepts of "first", "second", etc., used in this disclosure are only used to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0038] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0039] This disclosure provides a tool for disassembling a shaft-mounted fan impeller. The impeller of the shaft-mounted fan includes a hub and blades connected to the hub. An annular groove extending circumferentially along the hub is provided at the axial end of the hub.

[0040] Reference Figures 1 to 3 As shown, the shaft-mounted fan impeller disassembly tool includes: a base 1, a locking structure 2 located on one side of the base 1, and a handheld structure 4 located on the other side of the base 1.

[0041] The engaging structure 2 includes two engaging members 21 arranged opposite to each other. One end of each engaging member 21 is connected to the base 1. For example, one end of the engaging member 21 can be welded to the base 1 or integrally formed. This disclosure does not make any special limitation in this regard.

[0042] Each of the two engaging components 21 has a recessed groove 22 on its opposing surface, forming an engaging protrusion 23 on the side of the recessed groove 22 away from the base 1. (Refer to...) Figure 1 and Figure 2 It is understood that the portion between the side wall of the recessed groove 22 away from the base 1 and the end of the engaging member 21 away from the base 1 is formed as the aforementioned engaging protrusion 23. Specifically, the recessed groove 22 is provided near the end of the inner side of the engaging member 21 away from the base 1.

[0043] The two engaging parts 21 can move relative to the base 1 in a direction that approaches each other or in a direction that moves away from each other, so as to adjust the distance between the two engaging protrusions 23 and make the two engaging protrusions 23 engage in the annular groove. It can be understood that the two engaging protrusions 23 are located on both sides of the center of the annular groove.

[0044] In practice, the locking component 21 is moved relative to the base 1. By adjusting the distance between the two locking components 21, the two locking protrusions 23 are engaged into the annular groove of the hub. Then, the disassembly personnel hold the aforementioned handheld structure 4 and apply outward pulling force to remove the hub from the main shaft of the wind turbine. This method allows for impeller disassembly without requiring multiple personnel, reducing labor costs and improving disassembly efficiency.

[0045] Since the two engaging parts 21 can move relative to the base 1 toward each other or toward each other, this makes the shaft-mounted fan impeller disassembly tool applicable to the disassembly of fan impellers of different diameters, thus improving the applicability of the disassembly tool.

[0046] Among them, the handheld structure 4 is a rod-shaped structure that extends along the axial direction of the fan, and the axial length of the handheld structure 4 is adjustable.

[0047] By setting the length of the handheld structure 4, the disassembly operator can adjust the length according to their position or the ease of applying force, thus facilitating the operation and further improving the ease of operation.

[0048] In addition, when encountering confined spaces, the disassembly personnel can flexibly adjust the length of the handheld structure 4 according to the actual space size, making it easier to operate in confined spaces and further improving the ease of operation and applicable scenarios of the disassembly tool.

[0049] The shaft-mounted fan impeller disassembly tool disclosed herein comprises a base 1, a locking structure 2 on one side of the base 1, and a handheld structure 4 on the other side of the base 1. The locking structure 2 includes two opposing locking parts 21, one end of which is connected to the base 1. Each of the opposing surfaces of the two locking parts 21 has a recessed groove 22, forming a locking protrusion 23 on the side of the recessed groove 22 away from the base 1. This allows the two locking parts 21 to move relative to the base 1 in a direction closer to or further away from each other, adjusting the distance between the two locking protrusions 23 so that they engage in an annular groove. When impeller disassembly is required, simply adjust the distance between the two locking protrusions 23 until they engage in the annular groove of the impeller hub, then hold the handheld structure 4 and apply outward pulling force to disassemble the hub. This method allows for hub disassembly without the need for multiple personnel, reducing labor costs and improving disassembly efficiency.

[0050] Meanwhile, since the distance between the two engaging protrusions 23 is adjustable, this shaft-mounted fan impeller disassembly tool can be used to disassemble impellers of various sizes, thus increasing its applicability and ease of use. Furthermore, the adjustable distance between the two engaging parts 21 allows the disassembly tool to better adapt to and operate in confined spaces.

[0051] Moreover, since the engaging protrusion 23 is formed by opening a recessed groove 22 on the inner side of the engaging member 21, compared with the solution of directly setting a protrusion on the inner wall of the engaging member 21, this embodiment of the present disclosure, while realizing the matching and engaging of the engaging protrusion 23 with the annular groove, also saves the space occupied by the disassembly tool to a certain extent, which is conducive to the miniaturization of the disassembly tool and makes it convenient to carry and use.

[0052] Furthermore, by making the handheld structure 4 a rod-shaped structure extending axially along the fan shaft, and by making the axial length of the handheld structure 4 adjustable, the length of the handheld structure 4 can be easily adjusted, making the disassembly tool easier for disassembly personnel to use, thereby improving the ease of use of the disassembly tool. Moreover, it allows disassembly personnel to adjust the length of the handheld structure 4 according to the actual space size, making it easier to operate in confined spaces, further improving the ease of operation and the range of applicable scenarios for the disassembly tool.

[0053] In some embodiments, a groove 11 is provided on the base 1, and one end of the engaging member 21 extends into the groove 11 and can slide along the extending direction of the groove 11 so that the two engaging members 21 move closer to or further away from each other.

[0054] The base 1 is also provided with a fastening structure 3, which is used to fix the engaging component 21 when it moves to a preset position.

[0055] This design simplifies the structure and makes adjusting the distance between the two engaging parts 21 more convenient. Furthermore, when the engaging part 21 is inserted into the annular groove, the fastening structure 3 secures it, ensuring a more stable engagement between the engaging protrusion 23 and the annular groove. This prevents the engaging protrusion 23 from detaching from the annular groove, improving the smoothness and safety of the disassembly process and further enhancing disassembly efficiency.

[0056] In some embodiments, the slide 11 includes two slide segments 111, which are arranged at intervals on the base 1. One engaging member 21 corresponds to one slide segment 111, and the two slide segments 111 are respectively located on both sides of the projection of the handheld structure 4 on the base 1.

[0057] This design ensures that each locking component 21 corresponds to a sliding section 111, making the movement of the two locking components 21 more stable. By positioning the two sliding sections 111 on opposite sides of the projection of the handheld structure 4 onto the base 1, the overall balance of the disassembly tool is improved, thereby enhancing the balance of forces during disassembly and preventing damage to the hub or other components due to excessive localized forces.

[0058] Of course, in other implementations, a guide rail can be set on the base 1, and a slider that can slide along the guide rail can be set on the locking part 21.

[0059] In some embodiments, the engaging member 21 includes a main body portion 211 and a mating portion 212 located on the side of the main body portion 211 near the base 1.

[0060] Specifically, the engaging protrusion 23 is formed on the side of the main body 211 away from the mating part 212. The outer contour of the projection of the mating part 212 on the base 1 is located inside the outer contour of the projection of the main body 211 on the base 1. The mating part 212 extends into the slide groove 11 and slides in engagement with the slide groove 11.

[0061] By positioning the outer contour of the projection of the mating part 212 onto the base 1 inside the outer contour of the projection of the main body part 211 onto the base 1, the volume of the outer contour of the mating part 212 is reduced, thereby reducing the volume of the base 1 that mates with the mating part 212 to a certain extent. This facilitates the miniaturization of the entire disassembly tool and further improves the ease of operation and portability.

[0062] For example, the mating part 212 can be integrally formed with the main body part 211, which further improves the strength of the overall structure.

[0063] Of course, in other implementations, the mating part 212 and the main body part 211 can be manufactured separately and then fixed together.

[0064] In some embodiments, the fastening structure 3 may specifically include a fastening bolt 31 and an abutment plate 32. One end of the engaging member 21 is provided with a fastening hole 213, which may specifically be located at the end of the mating part 212 facing the base 1.

[0065] The abutting plate 32 abuts against the other side of the base 1 and covers the slide groove 11. The abutting plate 32 has a clearance hole 321 at the position of the corresponding fastening hole 213. The stud of the fastening bolt 31 passes through the clearance hole 321 and is threadedly connected to the fastening hole 213.

[0066] When the engaging component 21 moves to the preset position, that is, when the two engaging protrusions 23 match and engage with the annular groove, the abutment plate 32 abuts against the other side of the base 1, and the fastening bolt 31 is rotated so that the stud of the fastening bolt 31 passes through the clearance hole 321 and is fastened to the fastening hole 213, thereby achieving effective fixation of the engaging component 21. The structure is simple, and the connection is convenient and reliable.

[0067] Of course, in other implementations, the fastening structure 3 may also include multiple locking holes on the base 1 and elastic hooks on the locking member 21, with one of the elastic hooks engaging with the locking hole to fix the locking member 21.

[0068] In some embodiments, the handheld structure 4 includes a hollow handheld tube 41 and a movable rod 42 that is axially movable relative to the handheld tube 41.

[0069] Specifically, one end of the handheld tube 41 is connected to the other side of the base 1, the movable rod 42 is disposed inside the handheld tube 41, and the end of the handheld tube 41 away from the base 1 is open, so that the movable rod 42 can extend out of the handheld tube 41 from the open or retract into the handheld tube 41 from the open.

[0070] By moving the movable rod 42 axially, the length of the entire handheld structure 4 can be adjusted. This allows disassembly personnel to flexibly adjust the length of the handheld structure 4 according to the actual space size, making it easier to operate in confined spaces and further improving the ease of operation and applicability of the disassembly tool.

[0071] In some embodiments, the movable rod 42 is a threaded rod, and the inner wall of the hand-held cylinder 41 is provided with an internal thread that is threaded to engage with the threaded rod.

[0072] This makes it easy to adjust the length of the handheld structure 4 by simply rotating the movable rod 42, which also improves the reliability and stability of the connection between the movable rod 42 and the handheld tube 41.

[0073] In some embodiments, the end of the movable rod 42 away from the base 1 has an operation disk 421, the outer diameter of which is larger than the outer diameter of the movable rod 42.

[0074] By making the control panel 421 slightly larger than the movable lever 42, it is easier for the operator to hold, further improving the convenience of operation.

[0075] For example, the control panel 421 may be welded to the end of the movable rod 42 away from the base 1. Alternatively, the control panel 421 may be integrally formed with the movable rod 42.

[0076] In some embodiments, a guide structure 43 for guiding the movable rod 42 is further provided between the movable rod 42 and the handheld tube 41.

[0077] This further improves the stability of the movable lever 42 during movement and further enhances the ease of operation.

[0078] In some embodiments, the guide structure 43 includes a guide groove 431 disposed on the wall of the handheld tube 41 and a guide rod 432 disposed on the movable rod 42.

[0079] The guide groove 431 extends axially along the handheld sleeve 41, and the guide rod 432 is located in the guide groove 431 and can slide along the guide groove 431. An annular connecting plate 433 is sleeved on the movable rod 42, and the movable rod 42 can rotate relative to the annular connecting plate 433. The guide rod 432 is connected to the annular connecting plate 433.

[0080] This allows the annular connecting disc 433 to drive the guide rod 432 to move in the guide groove 431 when the movable rod 42 rotates, thereby achieving effective guidance of the movable rod 42.

[0081] In some embodiments, there are two guide grooves 431, which are respectively disposed on both sides of the handheld tube 41. There are also two guide rods 432, with one guide rod 432 corresponding to one guide groove 431; one end of each guide rod 432 is connected to the annular connecting plate 433, and the other end of each guide rod 432 extends into the corresponding guide groove 431.

[0082] This design improves the overall balance of the disassembly tool, thereby further ensuring disassembly efficiency.

[0083] In other implementations, the handheld structure 4 may also include multiple telescopic rod segments, with adjacent telescopic rod segments nested together and movable relative to each other, thereby achieving adjustment of the length of the handheld structure 4. Alternatively, the movable rod 42 may also be an elastic telescopic rod capable of axial extension and retraction with a certain degree of rigidity.

[0084] The shaft-mounted fan impeller disassembly tool provided in this embodiment of the invention has two engaging protrusions 23 and a handheld structure 4, and the distance between the two engaging protrusions 23 is adjustable, and the axial length of the handheld structure 4 is adjustable, which makes it easy to disassemble fan impellers of different diameters from the fan main shaft.

[0085] The above description is merely an embodiment of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features disclosed in this disclosure that have similar functions.

[0086] While specific embodiments of this disclosure have been described in detail by way of example, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of this disclosure. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of this disclosure. The scope of this disclosure is defined by the appended claims.

Claims

1. A tool for disassembling a shaft-driven fan impeller, characterized in that, The impeller includes a hub and blades connected to the hub, and an annular groove extending circumferentially along the axial end of the hub is provided. The shaft-mounted fan impeller disassembly tool includes a base, a locking structure on one side of the base, and a handheld structure on the other side of the base; The engaging structure includes two opposing engaging members, one end of each engaging member being connected to the base. Each engaging member has a recessed groove on its opposing surface to form an engaging protrusion on the side of the recessed groove away from the base. The two engaging members can move relative to the base towards each other or away from each other to adjust the distance between the two engaging protrusions, allowing them to engage in the annular groove. The handheld structure is a rod-shaped structure extending along the axial direction of the shaft-mounted fan, and the axial length of the handheld structure is adjustable.

2. The shaft-mounted fan impeller disassembly tool according to claim 1, characterized in that, The base is provided with a sliding groove, one end of the engaging member extends into the sliding groove and can slide along the extension direction of the sliding groove so that the two engaging members move closer or further apart from each other; The base is also provided with a fastening structure, which is used to fix the engaging component when the engaging component moves to a preset position.

3. The shaft-mounted fan impeller disassembly tool according to claim 2, characterized in that, The slide groove includes two slide groove sections, which are arranged at intervals on the base. One engaging member corresponds to one slide groove section, and the two slide groove sections are respectively located on both sides of the projection of the handheld structure on the base.

4. The shaft-mounted fan impeller disassembly tool according to claim 2, characterized in that, The engaging component includes a main body and a mating portion located on the side of the main body near the base; The engaging protrusion is formed on the side of the main body away from the mating part; The outer contour of the projection of the mating part on the base is located inside the outer contour of the projection of the main body part on the base; the mating part extends into the groove and slides in contact with the groove.

5. The shaft-mounted fan impeller disassembly tool according to claim 2, characterized in that, The fastening structure includes fastening bolts and abutment plates; One end of the engaging member is provided with a fastening hole, the abutting plate abuts against the other side of the base and covers the sliding groove, and the abutting plate is provided with a clearance hole at the position corresponding to the fastening hole. The stud of the fastening bolt passes through the clearance hole and is threadedly connected to the fastening hole.

6. The shaft-mounted fan impeller disassembly tool according to any one of claims 1 to 5, characterized in that, The handheld structure includes a hollow handheld tube and a movable rod that can move axially relative to the handheld tube; One end of the handheld tube is connected to the other side of the base. The movable rod is disposed inside the handheld tube, and the end of the handheld tube away from the base is open, so that the movable rod can extend out of the handheld tube from the open or retract into the handheld tube from the open.

7. The shaft-mounted fan impeller disassembly tool according to claim 6, characterized in that, The movable rod is a threaded rod, and the inner wall of the hand-held cylinder is provided with an internal thread that is threaded to the threaded rod; And / or, the end of the movable rod away from the base has an operating disc, the outer diameter of which is larger than the outer diameter of the movable rod.

8. The shaft-mounted fan impeller disassembly tool according to claim 6, characterized in that, A guide structure for guiding the movable rod is also provided between the movable rod and the handheld tube.

9. The shaft-mounted fan impeller disassembly tool according to claim 8, characterized in that, The guiding structure includes a guide groove disposed on the wall of the handheld tube and a guide rod disposed on the movable rod; The guide groove extends along the axial direction of the handheld tube, the guide rod is located in the guide groove and can slide along the guide groove; an annular connecting plate is sleeved on the movable rod, and the movable rod can rotate relative to the annular connecting plate; the guide rod is connected to the annular connecting plate.

10. The shaft-mounted fan impeller disassembly tool according to claim 9, characterized in that, There are two guide grooves, which are respectively located on both sides of the handheld tube; There are two guide rods, one guide rod corresponds to one guide groove; one end of each guide rod is connected to the annular connecting plate, and the other end of each guide rod extends into the corresponding guide groove.

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