Fan impeller dismounting tool

Abstract

The utility model belongs to the technical field of fan impellers, and discloses a fan impeller dismounting tool which comprises an impeller hub fixing device, a lead screw, a jack and a limiting pulling plate, the two ends of the lead screw are connected with the impeller hub fixing device and the limiting pulling plate respectively, and the impeller hub fixing device comprises an annular pulling plate and an annular clamping plate. The annular clamping plate is composed of a detachable semi-annular clamping plate a and a semi-annular clamping plate b. The annular pulling plate and the annular clamping plate are detachably and fixedly connected and are coaxial; the inner diameter of the annular pulling plate is larger than that of the annular clamping plate, and the inner diameter of the annular clamping plate is equal to the outer diameter of an impeller hub. According to the fan impeller dismounting tool, the annular clamping plates with different inner diameters can be replaced, the fan impeller dismounting tool is suitable for dismounting fan impellers with different impeller hub outer diameters, the application range is wide, and the fan impeller dismounting tool has a certain protection effect on the fan impeller and dismounting personnel.

Description

Technical Field

[0001] This utility model belongs to the field of wind turbine impeller disassembly technology, and relates to a wind turbine impeller disassembly tool. Background Technology

[0002] Centrifugal fans are mainly used in spinning mills for cooling, ventilation, exhaust, dust removal, and drying. By providing a powerful airflow, they ensure that equipment operates at a suitable temperature, preventing overheating, and effectively remove waste gas and fiber dust, maintaining a clean production environment. Furthermore, centrifugal fans accelerate the fiber drying process, improve drying efficiency, and promote air circulation within the workshop, improving the working environment. This not only increases production efficiency but also ensures a safe and clean production environment.

[0003] In the maintenance process of centrifugal fans, the disassembly of the fan impeller is a crucial step. However, this task is exceptionally complex due to the unique structure of the fan impeller and its hub. Traditional manual disassembly methods (i.e., using iron bars or hammers to strike the impeller hub from the side) are not only inefficient and labor-intensive, but also highly likely to damage the fan impeller and main shaft, and in severe cases, may even lead to the scrapping of the entire fan.

[0004] Patent CN207363962U discloses a disassembly and assembly clamp for a small-to-medium-sized motor-driven direct-drive fan impeller. This clamp includes a base plate and a first pull plate and a second pull plate installed in a disassembly slot within the impeller hub. A first pull rod is fixed to the first pull plate, and a second pull rod is fixed to the second pull plate, with the ends of both pull rods fixed to the base plate. A press is located between the base plate and the motor's long shaft; operating the press pulls the motor-driven direct-drive fan impeller out in the direction of force. However, this patent's disassembly method has limitations: using bolts to connect the semi-circular pull plate to the impeller hub only applies to the disassembly of certain fixed impeller models in non-large fans (where the threaded hole positions are fixed). In actual production environments, many fan impeller hubs lack threaded holes, preventing the pull plate from being securely fixed to the hub. Therefore, the applicability of this patented disassembly and assembly clamp is limited. Furthermore, during disassembly, hydraulic or mechanical grippers are needed to secure the impeller and prevent it from falling. However, these grippers often struggle to firmly hold the impeller, and even if they manage to grip the edge, improper force can cause the impeller to vibrate and fall, increasing the difficulty of disassembly and posing safety risks to personnel. Disassembly is particularly challenging for large centrifugal fans where the impeller or the junction of the impeller hub and motor shaft is rusted.

[0005] Therefore, a wind turbine impeller disassembly tool is needed to solve the above problems, which is of great significance. Utility Model Content

[0006] The purpose of this utility model is to solve the problems existing in the prior art and provide a tool for disassembling wind turbine impellers.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A wind turbine impeller disassembly tool includes an impeller hub fixing device, a lead screw, a jack, and a limiting pull plate. The two ends of the lead screw are respectively connected to the impeller hub fixing device and the limiting pull plate. The impeller hub fixing device includes an annular pull plate and an annular clamping plate.

[0009] The annular plate consists of a detachable semi-annular plate a and a semi-annular plate b;

[0010] The annular pull plate and the annular clamping plate are detachably fixedly connected and coaxial.

[0011] The inner diameter of the annular pull plate is larger than that of the annular clamping plate. The inner diameter of the annular clamping plate is the same as the diameter of the hub groove on the impeller hub. Different annular clamping plates with different inner diameters can be replaced. It is suitable for disassembling wind turbine impellers with different impeller hub outer diameters and has a wide range of applications.

[0012] As a preferred technical solution:

[0013] As described above, the impeller disassembly tool further includes bolt a in the impeller hub fixing device;

[0014] The annular pull plate consists of a semi-annular pull plate a and a semi-annular pull plate b, which are detachably and fixedly connected.

[0015] The inner wall of the semi-annular pull plate a is provided with a groove a for partially accommodating the semi-annular card plate a, and the inner wall of the semi-annular pull plate b is provided with a groove b for partially accommodating the semi-annular card plate b.

[0016] The annular pull plate and the annular clamping plate are connected by bolts a distributed radially along the annular pull plate. Specifically, the bottom of the grooves a and b are provided with through holes a radially, and the outer walls of the semi-annular clamping plates a and b are provided with threaded holes a radially.

[0017] The threaded section of bolt a passes through through hole a and connects to threaded hole a.

[0018] As described above, the impeller disassembly tool further includes bolt b in the impeller hub fixing device;

[0019] The semi-circular pull plate a and the semi-circular pull plate b are detachably fixedly connected by bolt b; specifically, the side walls of the semi-circular pull plate a and the semi-circular pull plate b that are in contact with each other are provided with through holes b and threaded holes b along the direction perpendicular to the side walls.

[0020] The through hole b on the semi-annular pull plate a corresponds to the threaded hole b on the semi-annular pull plate b, and the threaded hole b on the semi-annular pull plate a corresponds to the through hole b on the semi-annular pull plate b.

[0021] The threaded section of bolt b passes through the through hole b and connects with the threaded hole b.

[0022] As described above, a fan impeller disassembly tool has threaded holes c on both the semi-annular pull plate a and the semi-annular pull plate b.

[0023] There are two lead screws, which are connected to the threaded holes c on the semi-annular pull plate a and the semi-annular pull plate b, respectively.

[0024] As described above, the wind turbine impeller disassembly tool also has spare threaded holes on both the semi-annular pull plate a and the semi-annular pull plate b.

[0025] As described above, the wind turbine impeller disassembly tool also includes a connecting shaft;

[0026] The connecting shaft consists of coaxial shaft segment a and shaft segment b. Shaft segment a is a threaded segment, and a threaded hole e that is adapted to shaft segment a is opened on the axis of shaft segment b. The diameter of shaft segment b is smaller than the outer diameter of the fan motor shaft.

[0027] The shaft segment a of the connecting shaft is used to connect with the internal thread of the fan motor shaft, thereby extending the length of the fan motor shaft. When the fan impeller is removed from the fan motor shaft, the fan impeller will be on the connecting shaft, preventing it from falling directly to the ground and preventing dangerous incidents.

[0028] When the overall length of a connecting shaft does not meet the requirements, multiple shaft segments a can be connected to the threaded hole e of another connecting shaft to obtain a longer connecting shaft.

[0029] As described above, the wind turbine impeller disassembly tool has a rectangular limiting plate with symmetrically distributed elongated notches a and b.

[0030] The length directions of elongated notches a and b are the same as the length direction of the rectangular plate;

[0031] The widths of the elongated notches a and b are greater than or equal to the diameter of the lead screw.

[0032] As described above, a fan impeller disassembly tool has a threaded hole d at the center of the limiting pull plate. Even without a jack, a screw can be screwed into the threaded hole d to separate the fan motor shaft from the impeller hub.

[0033] The jack used in the above-mentioned fan impeller disassembly tool is a screw jack.

[0034] Beneficial effects:

[0035] (1) The wind turbine impeller disassembly tool of this utility model has a simple structure and can replace the annular clamping plate with different inner diameters. It is suitable for disassembling wind turbine impellers with different impeller hub outer diameters and has a wide range of applications.

[0036] (2) This utility model can extend the length of the fan motor shaft through the connecting shaft. After the fan impeller is removed from the fan motor shaft, the fan impeller will be on the shaft section b of the connecting shaft, avoiding it from falling directly to the ground. This provides a certain degree of protection for the fan impeller and the operator, preventing dangerous events from occurring.

[0037] (3) In the absence of a jack, this utility model can also separate the fan impeller from the fan motor shaft by screwing a screw into the threaded hole d. Attached Figure Description

[0038] Figure 1 An exploded view of the structure of the wind turbine impeller and the wind turbine impeller disassembly tool of this utility model;

[0039] Figure 2 This is a schematic diagram illustrating the use of the wind turbine impeller disassembly tool of this utility model;

[0040] Figure 3 This is a schematic diagram of the impeller hub fixing device in this utility model;

[0041] Figure 4 , Figure 5 These are schematic diagrams of the semi-annular pull plate a from different perspectives in this utility model;

[0042] Figure 6 This is a schematic diagram of the semi-annular card plate a in this utility model;

[0043] Figure 7 This is a schematic diagram of the connecting shaft in this utility model;

[0044] Figure 8 This is a schematic diagram of the limiting pull plate in this utility model;

[0045] Among them, 1-ring pull plate, 2-ring clamping plate, 3-bolt b, 4-bolt a, 5-threaded hole c, 6-spare threaded hole, 7-through hole a, 8-threaded hole a, 10-through hole b, 11-threaded hole b, 12-impeller hub, 13-hub groove, 15-connecting shaft, 16-shaft section a, 17-screw, 18-jack, 19-limiting pull plate, 21-fan motor shaft, 24-threaded hole d, 25-long strip notch a, 26-impeller body. Detailed Implementation

[0046] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0047] A tool for disassembling a wind turbine impeller, such as Figure 1 , 2 As shown, it includes an impeller hub fixing device, a lead screw 17, a jack 18, a limit pull plate 19, and a connecting shaft 15;

[0048] like Figures 3-6 As shown, the impeller hub fixing device includes an annular pull plate 1, an annular clamping plate 2, bolt a 4, and bolt b 3;

[0049] The annular plate 2 consists of a detachable semi-annular plate a and a semi-annular plate b;

[0050] The annular pull plate 1 is composed of a semi-annular pull plate a and a semi-annular pull plate b;

[0051] like Figure 3 As shown, the annular pull plate 1 and the annular clamping plate 2 are coaxial. The inner diameter of the annular pull plate 1 is larger than the inner diameter of the annular clamping plate 2. The inner diameter of the annular clamping plate 2 is the same as the diameter of the hub groove 13 on the impeller hub 12.

[0052] like Figure 4 As shown, both the semi-annular pull plate a and the semi-annular pull plate b have through holes b 10 and threaded holes b 11 on their contacting sidewalls along the direction perpendicular to the sidewalls; the through holes b 10 on the semi-annular pull plate a and the threaded holes b 11 on the semi-annular pull plate b correspond to each other, and the threaded holes b 11 on the semi-annular pull plate a and the through holes b 10 on the semi-annular pull plate b correspond to each other; the threaded section of the bolt b 3 passes through the through hole b 10 and connects to the threaded hole b 11.

[0053] like Figure 3 and Figure 4 As shown, a groove a is provided on the inner wall of the semi-annular pull plate a for partially accommodating the semi-annular card plate a, and a groove b is provided on the inner wall of the semi-annular pull plate b for partially accommodating the semi-annular card plate b.

[0054] Both groove a and groove b have through holes a7 radially opened at the bottom of the groove, and both semi-annular clamping plates a and b have threaded holes a8 radially opened on the outer side walls; the threaded section of bolt a4 passes through the through hole a7 and connects to the threaded hole a8.

[0055] like Figure 4 As shown, both the semi-annular pull plate a and the semi-annular pull plate b are provided with threaded holes c5 and spare threaded holes 6.

[0056] like Figure 8 As shown, the limiting plate 19 is a rectangular plate with symmetrically distributed elongated notches a 25 and b.

[0057] The length directions of elongated notches a and b are the same as the length direction of the rectangular plate;

[0058] The widths of elongated notches a and b are greater than or equal to the diameter of the lead screw 17;

[0059] A threaded hole d 24 is provided at the center of the plate surface of the limiting pull plate 19;

[0060] There are two lead screws 17. One end of each lead screw 17 is connected to the threaded hole c 5 on the semi-annular pull plate a and the semi-annular pull plate b, respectively. The other end of each lead screw 17 is connected to the elongated notch a 25 and the elongated notch b, respectively.

[0061] like Figure 7 As shown, the connecting shaft 15 consists of coaxial shaft segments a 16 and b. Shaft segment a 16 is a threaded segment, and a threaded hole e adapted to shaft segment a 16 is opened on the axis of shaft segment b. The diameter of shaft segment b is smaller than the outer diameter of the fan motor shaft 21.

[0062] Jack 18 is a screw jack.

[0063] The process of using the above device is as follows: Figure 2 As shown, the fan impeller includes an impeller hub 12 and an impeller body 26 that is fitted onto and fixedly connected to the impeller hub 12. When using this tool, first select an annular clamping plate 2 with a suitable inner diameter, and clamp the semi-annular clamping plates a and b onto the hub groove 13; then, fix the annular clamping plate 2 inside the annular pull plate 1 with bolt a 4, and fix the semi-annular pull plates a and b with bolt b 3; next, install the lead screw 17 and the limiting pull plate 19; then, connect the shaft section a 16 of the connecting shaft 15 to the internal thread of the fan motor shaft 21; finally, place the jack 18 between the limiting pull plate 19 and the connecting shaft 15, adjust the limiting pull plate 19 to a suitable position, and start the jack 18 to remove the fan impeller and impeller hub 12 from the fan motor shaft 21.

Claims

1. A wind turbine impeller disassembly tool, comprising an impeller hub fixing device, a lead screw (17), a jack (18), and a limiting pull plate (19), wherein the two ends of the lead screw are respectively connected to the impeller hub fixing device and the limiting pull plate (19), characterized in that, The impeller hub fixing device includes an annular pull plate (1) and an annular clamping plate (2); The annular plate (2) consists of a detachable semi-annular plate a and a semi-annular plate b; The annular pull plate (1) and the annular clamping plate (2) are detachably fixedly connected and coaxial; The inner diameter of the annular pull plate (1) is larger than the inner diameter of the annular clamping plate (2), and the inner diameter of the annular clamping plate (2) is the same as the diameter of the hub groove (13) on the impeller hub (12).

2. The wind turbine impeller disassembly tool according to claim 1, characterized in that, The impeller hub fixing device also includes bolt a(4); The annular pull plate (1) consists of a semi-annular pull plate a and a semi-annular pull plate b, which are detachably and fixedly connected. The inner wall of the semi-annular pull plate a is provided with a groove a for partially accommodating the semi-annular card plate a, and the inner wall of the semi-annular pull plate b is provided with a groove b for partially accommodating the semi-annular card plate b. The annular pull plate (1) and the annular clamping plate (2) are connected by bolts a (4) distributed radially along the annular pull plate (1).

3. The wind turbine impeller disassembly tool according to claim 2, characterized in that, The impeller hub fixing device also includes bolt b(3); The semi-circular pull plate a and the semi-circular pull plate b are detachably fixedly connected by bolt b (3).

4. A fan impeller disassembly tool according to claim 2, characterized in that, Both the semi-annular pull plate a and the semi-annular pull plate b are provided with threaded holes c (5); There are two lead screws (17), which are connected to the threaded holes c (5) on the semi-annular pull plate a and the semi-annular pull plate b, respectively.

5. A fan impeller disassembly tool according to claim 4, characterized in that, Both the semi-circular pull plate a and the semi-circular pull plate b are provided with spare threaded holes (6).

6. A wind turbine impeller disassembly tool according to claim 1, characterized in that, The wind turbine impeller disassembly tool also includes a connecting shaft (15); The connecting shaft (15) consists of coaxial shaft segment a (16) and shaft segment b. Shaft segment a (16) is a threaded segment, and a threaded hole e adapted to shaft segment a is opened on the axis of shaft segment b. The diameter of shaft segment b is smaller than the outer diameter of the fan motor shaft.

7. A wind turbine impeller disassembly tool according to claim 1, characterized in that, The limiting pull plate (19) is a rectangular plate, and symmetrically distributed elongated notches a (25) and b are provided on the rectangular plate. The length directions of the elongated notch a(25) and the elongated notch b are the same as the length direction of the rectangular plate; The widths of the elongated notch a (25) and the elongated notch b are greater than or equal to the diameter of the lead screw (17).

8. A fan impeller disassembly tool according to claim 7, characterized in that, A threaded hole d (24) is provided at the center of the plate surface of the limiting pull plate (19).

9. A wind turbine impeller disassembly tool according to claim 1, characterized in that, The jack is a screw jack.

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