Disassembling tool for double-clamping-plate hub of propeller fan of water cooling tower

Abstract

The utility model relates to a dismounting tool for a double-clamping-plate hub of a propeller fan of a water cooling tower. Comprising an air duct arranged at the top of the water cooling tower, a speed reducer connected with a motor is arranged in the air duct, the top of the speed reducer is sleeved with a main shaft hole in the center of a double-clamping-plate hub through a main shaft, axial flow fan blades are fixedly arranged on the outer side of the double-clamping-plate hub, the main shaft hole is a through hole, and an end cover is arranged at the top end of the main shaft hole. First threaded holes are evenly distributed in the periphery of the end cover, second threaded holes matched with the first threaded holes are formed in the double-clamping-plate hub, bolts are installed in the first threaded holes and the second threaded holes in a penetrating mode, a jackscrew hole is formed in the center of the end cover, and a jackscrew is installed in the jackscrew hole in a sleeved mode. The dismounting tool has the characteristics that the double-clamping-plate hub is convenient to dismount, the number of operators is reduced, the labor intensity is reduced, and a speed reducer gearbox shell is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of maintenance tools for cooling tower fans, in particular to a double clamping plate hub disassembly tool for a cooling tower propeller fan. Background Art

[0002] The cooling tower fan is a cooling device for long-term continuous operation of chemical enterprises. After the cooling tower fan runs continuously for a long time, it is necessary to replace or repair the internal reduction gearbox of the cooling tower fan to lay a foundation for the stable operation of subsequent equipment. Therefore, for the maintenance of the cooling tower fan, the double clamping plate hub and the wind blade need to be disassembled first before the reduction gearbox can be disassembled for replacement or repair. The internal space of the cooling tower fan is relatively narrow and cramped, making it inconvenient to operate and difficult for personnel to carry out maintenance. In traditional technology, in order to disassemble the double clamping plate hub and fix the wind blade, usually six operators are required. Two of the operators need to place the split hydraulic jack on the upper shell surface of the reduction gearbox (the upper shell surface of the reduction gearbox is an arc-shaped slope) and hold it by hand. Another two operators need to operate the hydraulic rod to jack the jack to the lower surface of the double clamping plate hub. The last two operators need to cooperate with the hoisting operator to lift the double clamping plate hub from above the reduction gearbox. In the above working process, due to the narrow space, it is inconvenient for multiple operators to operate, the labor intensity is relatively large, and the split hydraulic jack is easy to damage the housing of the reduction gearbox, affecting the service life of the reduction gearbox. Summary of the Utility Model

[0003] In order to make up for the above deficiencies, the utility model provides a double clamping plate hub disassembly tool for a cooling tower propeller fan to solve the technical problems existing in the prior art.

[0004] To achieve the above object, the utility model provides the following technical solutions:

[0005] A double clamping plate hub disassembly tool for a cooling tower propeller fan includes a wind cylinder arranged at the top of the cooling tower. A reduction gearbox connected to a motor is arranged inside the wind cylinder. The top of the reduction gearbox is sleeved through a main shaft into a main shaft hole at the central position of the double clamping plate hub. An axial flow fan blade is fixedly arranged on the outer side of the double clamping plate hub. The main shaft hole is a through hole. An end cover is arranged at the top end of the main shaft hole. First threaded holes are evenly distributed around the end cover. Second threaded holes adapted to the first threaded holes are arranged on the double clamping plate hub. Bolts are inserted into the first threaded holes and the second threaded holes. A jackscrew hole is arranged at the central position of the end cover, and a jackscrew is sleeved in the jackscrew hole.

[0006] The beneficial effects of the present utility model are as follows: By providing an end cap, the fixation between the double-clamp wheel hub and the disassembly tool can be achieved. On the basis of the fixation, by providing a setscrew, the double-clamp wheel hub can be disassembled under the action of the setscrew on the end of the main shaft. The above working method only requires one operator, thus being able to solve the defects of inconvenient operation for multiple operators in a narrow space, high labor cost, large labor intensity, and easy damage to the reducer gearbox housing.

[0007] Preferably, the bolt includes a screw rod at the lower part and a lifting ring integrally formed with the screw rod at the upper part.

[0008] Preferably, a force-applying rod hole is provided at the upper part of the setscrew, and a force-applying rod is sleeved in the force-applying rod hole.

[0009] Preferably, the second threaded hole is a through hole penetrating the double-clamp wheel hub.

[0010] Preferably, a ring-shaped fixing plate with a notch is provided at the lower part of the double-clamp wheel hub, and a third threaded hole adapted to the second threaded hole is provided on the ring-shaped fixing plate.

[0011] Preferably, a locking nut adapted to the lower part of the screw rod is provided on the outer side of the ring-shaped fixing plate.

[0012] Preferably, the width of the notch on the ring-shaped fixing plate is greater than the outer diameter of the main shaft.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. The present utility model realizes the firm fixation of the end cap and the double-clamp wheel hub by connecting the first threaded hole on the end cap and the second threaded hole on the clamp wheel hub through a bolt. At the same time, by using the setscrew to act on the main shaft, the disassembly of the double-clamp wheel hub is realized, which has the characteristics of convenient disassembly of the double-clamp wheel hub, reduction of the number of operators, reduction of labor intensity, and prevention of damage to the reducer gearbox housing.

[0015] 2. The present utility model can achieve the characteristic of convenient hoisting by providing a bolt with a lifting ring. Further, in order to improve the firmness of hoisting, the present utility model designs the second threaded hole as a through hole penetrating the double-clamp wheel hub to achieve the purpose of reducing the risk of hoisting operation.

[0016] 3. The present utility model particularly provides a ring-shaped fixing plate and a locking nut. Due to the excessive weight of the double-clamp wheel hub, in order to protect the external thread of the screw rod and the internal thread of the second threaded hole, the characteristic of improving the safety of hoisting operation is achieved on the basis of realizing reusable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the double-clip wheel hub disassembly tool of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the end cover of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the bolt of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the annular fixing plate of the utility model.

[0022] Legend:

[0023] 1. Air duct; 2. Speed ​​reducer; 3. Main shaft; 4. Double-plate hub; 5. Axial fan blades; 6. End cover; 7. First threaded hole; 8. Second threaded hole; 9. Top screw hole; 10. Top screw; 11. Screw; 12. Lifting ring; 13. Force rod hole; 14. Force rod; 15. Annular fixing plate; 16. Third threaded hole; 17. Locking nut. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figures 1-5The utility model discloses a double-ply hub disassembly tool for a propeller fan of a cooling tower, comprising a wind tube 1 arranged at the top of the cooling tower, a reducer 2 connected to a motor being arranged in the wind tube 1, the top of the reducer 2 being fitted into a main shaft hole at the center position of a double-ply hub 4 through a main shaft 3, an axial flow fan blade 5 being fixedly arranged on the outer side of the double-ply hub 4, the main shaft hole being a through hole, an end cover 6 being provided at the top end of the main shaft hole, first threaded holes 7 being evenly distributed around the end cover 6, a second threaded hole 8 being matched with the first threaded hole 7 being provided on the double-ply hub 4, bolts being inserted into the first threaded hole 7 and the second threaded hole 8, a top screw hole 9 being provided at the center position of the end cover 6, a top screw 10 being fitted into the top screw hole 9. As is known to all, the height of the cooling tower is relatively high, and the wind tube 1 is arranged at the top of the cooling tower, the double-ply hub 4 is arranged at the inner upper part of the wind tube 1, and the surface of the gear box housing of the conventional reducer 2 has an arc, based on which the disassembly and assembly and hoisting of the double-ply hub 4 are extremely inconvenient and have potential safety hazards. The utility model abandons the traditional idea and uses the reaction force of the main shaft 3 to disassemble it at the upper part of the double-ply hub. Its hoisting can be carried out in a traditional way, such as: bundling the double-ply hub 4 for hoisting operation; the end cover 6 is tightly fixed with the double-ply hub 4 by bolts installed in the first threaded hole 7 and the second threaded hole 8, and at the same time, force is applied to the end of the main shaft 3 by screwing in the top screw 10 to realize the disassembly of the double-ply hub 4. It should be noted that: the second threaded hole 8 can be a through hole or a blind hole, and the bolts can be conventional bolts or special bolts for convenient hoisting. In actual use, conventional bolts or special bolts can be used in full, or conventional bolts and special bolts can be used in combination.

[0026] Further, the bolt comprises a screw rod 11 at the bottom and a lifting ring 12 at the top which is an integral structure with the screw rod 11. The structure of the special bolt for convenient lifting in the utility model can be a screw rod with external threads at the bottom, and a lifting ring 12 with an integral structure and convenient lifting is arranged at the top of the screw rod.

[0027] Furthermore, a force rod hole 13 is provided on the upper part of the top screw 10, and a force rod 14 is sleeved in the force rod hole 13. The force rod 14 can reduce the labor intensity of disassembly.

[0028] Furthermore, the second threaded hole 8 is a through hole that penetrates the double-clamp wheel hub 4. By setting the second threaded hole 8 as a through hole, the firmness of the hoisting can be improved, so as to achieve the characteristic of reducing the risk of the hoisting operation.

[0029] Further, a ring-shaped fixing plate 15 with a notch is provided at the lower part of the double clamping plate hub 4, and a third threaded hole 16 adapted to the second threaded hole 8 is formed in the ring-shaped fixing plate 15. Through the above arrangement, during the process of disassembling the double clamping plate hub 4 and during the process of hoisting the double clamping plate hub 4, the wear of the external thread of the screw rod 11 and the internal thread of the second threaded hole 8 can be reduced, so as to facilitate recycling while improving the firmness of hoisting.

[0030] Further, a locking nut 17 adapted to the lower part of the screw rod 11 is provided on the outer side of the ring-shaped fixing plate 15. Through the above arrangement, the wear of the external thread of the screw rod 11 and the internal thread of the second threaded hole 8 can be reduced, and the firmness of hoisting can be improved.

[0031] Further, the width of the notch on the ring-shaped fixing plate 15 is greater than the outer diameter of the main shaft 3. By providing a notch on the ring-shaped fixing plate 15, the feature of convenient installation can be realized.

[0032] The working principle of the present utility model: When using the present utility model, bolts are inserted through the first threaded hole 7, the second threaded hole 8 and the third threaded hole 16, and the locking nut 17 is screwed tightly at the lower part of the screw rod 11 to achieve the tight fixation among the end cover 6, the double clamping plate hub 4 and the ring-shaped fixing plate 15. Then, the hoisting rope on the hoisting device passes through the lifting ring 12, and during the hoisting process, the double clamping plate hub 4 is kept balanced. For this purpose, several bolts with lifting rings 12 can be provided on the end cover 6; when the above preparations are completed, an operator rotates the jackscrew 10 through the force-applying rod 14 to apply a force to the main shaft, and the double clamping plate hub 4 is disassembled under the push of the reaction force, and finally hoisting can be carried out through the hoisting device. It has the characteristics of simple structure, convenient disassembly of the double clamping plate hub, reduction of the number of operating personnel, reduction of labor intensity, prevention of damage to the reducer gearbox housing and convenient hoisting.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A double-ply hub disassembly tool for a propeller fan of a cooling tower, comprising a wind tube (1) arranged at the top of the cooling tower, a reducer (2) connected to a motor is arranged in the wind tube (1), the top of the reducer (2) is sleeved in a main shaft hole at the center of the double-ply hub (4) through a main shaft (3), and an axial fan blade (5) is fixedly arranged on the outer side of the double-ply hub (4), characterized in that: The main shaft hole is a through hole, and an end cover (6) is provided at the top of the main shaft hole. A plurality of first threaded holes (7) are evenly distributed around the end cover (6). Second threaded holes (8) adapted to the first threaded holes (7) are provided on the double clamping plate hub (4). Bolts are inserted into the first threaded holes (7) and the second threaded holes (8). A set screw hole (9) is provided at the center of the end cover (6), and a set screw (10) is sleeved in the set screw hole (9).

2. The double clamping plate hub disassembly tool for a cooling tower propeller fan according to claim 1, wherein: The bolt includes a screw rod (11) at the lower part and a lifting ring (12) integrally formed with the screw rod (11) at the upper part.

3. A double-clip hub disassembly tool for a cooling tower propeller fan according to claim 1, characterized in that: A force adding rod hole (13) is provided at the upper part of the set screw (10), and a force adding rod (14) is sleeved in the force adding rod hole (13).

4. The double clamping plate hub disassembly tool for the propeller fan of a cooling tower according to claim 2, wherein: The second threaded hole (8) is a through hole penetrating the double clamping plate hub (4).

5. A double-clip hub disassembly tool for a cooling tower propeller fan according to claim 4, characterized in that: A ring-shaped fixing plate (15) with a notch is provided at the lower part of the double clamping plate hub (4), and a third threaded hole (16) adapted to the second threaded hole (8) is formed in the ring-shaped fixing plate (15).

6. A double-clip hub disassembly tool for a cooling tower propeller fan according to claim 5, characterized in that: A locking nut (17) adapted to the lower part of the screw rod (11) is provided on the outer side of the ring-shaped fixing plate (15).

7. The double-clip hub disassembly tool for a cooling tower propeller fan according to claim 5, characterized in that: The width of the notch on the ring-shaped fixing plate (15) is greater than the outer diameter of the main shaft (3).

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