Rotor assembling and disassembling tool

Abstract

The utility model relates to the field of generators, in particular to a rotor assembling and disassembling tool, which comprises a first retaining ring sleeved at the right end of a rotor and a second retaining ring sleeved at the left end of the rotor, and the right end of the first retaining ring is connected with a collecting ring or an exciter through a bearing. The left end of the second protective ring is connected with an extension shaft through a bearing, and a lifting ring is arranged on the left end face of the extension shaft. According to the utility model, the extension shaft is additionally arranged, and the rotor can be hoisted by using the extension shaft, so that the problem of difficult hoisting caused by the fact that the end part of the rotor shaft cannot penetrate out of the stator is solved.

Description

Technical Field

[0001] This utility model relates to the field of generators, and in particular to a rotor assembly and disassembly tool. Background Technology

[0002] When assembling and disassembling the rotor and stator of a large generator in a small factory, a horizontal assembly and disassembly method is generally adopted. Horizontal assembly and disassembly can be carried out in spaces with limited height, avoiding the complex operation of vertical lifting and lowering, which is suitable for environments with limited space.

[0003] When the rotor is to be installed or removed laterally from the stator, it needs to be lifted and then inserted into the stator. However, when the rotor shaft is short, after the rotor is inserted laterally into the stator, the end of the rotor shaft cannot be pushed out of the stator, which makes the lifting difficult. Utility Model Content

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution;

[0006] The rotor assembly and disassembly tool includes a first retaining ring fitted on the right end of the rotor, the right end of which is connected to a slip ring or exciter via a bearing, and a second retaining ring fitted on the left end of the rotor.

[0007] The left end of the second retaining ring is connected to an extension shaft via a bearing, and a lifting ring is provided on the left end face of the extension shaft.

[0008] This invention includes an extension shaft, which can be used to hoist the rotor, thus solving the problem that the end of the rotor shaft cannot pass through the stator, making hoisting difficult.

[0009] The first and second retaining rings are provided with annular grooves with outward openings, and the plane of the annular grooves is perpendicular to the central axis of the rotor. In use, in addition to the lifting rings, the annular grooves can also be used as lifting positions, thereby increasing the number of lifting points and making the lifting position of the rotor more flexible, thus increasing the flexibility of rotor and stator assembly.

[0010] The extension shaft comprises a first extension shaft, at least one second extension shaft, and a third extension shaft;

[0011] The right end of the first extension shaft is connected to the second retaining ring via a bearing, and the left end of the first extension shaft is provided with an outward flange, on which at least 8 bolt holes are equally spaced.

[0012] The right end of the second extension shaft is provided with a first flange, and the first extension shaft is connected through the first flange. The left end of the second extension shaft is provided with a second flange, and the second extension shaft is connected to another second extension shaft or a third extension shaft through the second flange.

[0013] The right end of the third extension shaft is provided with a third flange that matches the second flange, and the left end of the third extension shaft is provided with the lifting ring.

[0014] This invention optimizes the structure of the extension shaft. In use, the number of second extension shafts can be increased or decreased according to the rotor and stator, thereby changing the total length of the extension shaft and meeting different hoisting requirements.

[0015] The first flange, the second flange, and the third flange are all connected to reinforcing plates, which are arranged at equal intervals around the central axis of the extension shaft. This increases the strength of the extension shaft.

[0016] The reinforcing plate has openings. These openings can be used as lifting points, thereby increasing the number of lifting points and making the lifting position of the rotor more flexible, thus increasing the flexibility during the assembly of the rotor and stator.

[0017] The distances from the openings of the reinforcing plates connected to the same flange to the central axis of the extension shaft are different. Therefore, different hoisting heights can be selected to adjust the tilt angle of the extension shaft, and consequently, the tilt angle of the rotor.

[0018] The reinforcing plate is welded to the extension shaft, and the height of the reinforcing plate increases as it gets closer to the flange it is connected to. This invention optimizes the connection relationship between the reinforcing plate and the extension shaft, significantly increasing the connection strength between the reinforcing plate and the extension shaft, and also significantly increasing the connection strength between the extension shafts themselves.

[0019] The outer diameter of the retaining ring on the side furthest from the rotor is smaller than the outer diameter of the side closest to the rotor. A fan is fitted onto the side of the retaining ring furthest from the rotor, and the outer diameter of the fan is no greater than the outer diameter of the side of the retaining ring closest to the rotor. The retaining ring of this invention is connected outwards via a bearing, allowing the rotor to rotate and thus permitting testing of the assembled rotor and stator. The fan outside the retaining ring effectively improves the heat dissipation of the rotor and stator during testing. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0021] Figure 1 A schematic diagram of the rotor stator assembly structure of the rotor assembly and disassembly tool according to an embodiment of this utility model;

[0022] Figure 2 A schematic diagram of the rotor hoisting structure of the rotor assembly and disassembly tool according to an embodiment of this utility model;

[0023] Figure 3 The rotor assembly / disassembly tool provided in one embodiment of this utility model Figure 1 Schematic diagram of the cross-sectional structure at point AA. Detailed Implementation

[0024] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in less than one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0028] Example 1

[0029] Reference Figures 1-3 The rotor assembly and disassembly tool includes a first retaining ring 11 fitted on the right end of the rotor 1, the right end of which is connected to a slip ring or exciter 3 via a bearing, and a second retaining ring 12 fitted on the left end of the rotor 1.

[0030] The left end of the second guard ring 12 is connected to an extension shaft 4 via a bearing, and a lifting ring 432 is provided on the left end face of the extension shaft 4.

[0031] This utility model adds an extension shaft 4, which can be used to hoist the rotor 1, thereby solving the problem that the end of the rotor 1 shaft cannot pass through the stator 2, which makes hoisting difficult.

[0032] The first retaining ring 11 and the second retaining ring 12 are provided with annular grooves with outward openings, and the plane of the annular grooves is perpendicular to the central axis of the rotor 1. In use, in addition to the lifting ring 432, the annular grooves can also be used as lifting positions, thereby increasing the number of lifting points and making the lifting position of the rotor 1 more flexible, thus increasing the flexibility of assembling the rotor 1 and the stator 2.

[0033] The outer diameter of the retaining ring on the side away from rotor 1 is smaller than the outer diameter of the side of the retaining ring closer to rotor 1. A fan is fitted on the side of the retaining ring away from rotor 1, and the outer diameter of the fan is no larger than the outer diameter of the side of the retaining ring closer to rotor 1. The retaining ring of this invention is connected outward through a bearing, allowing rotor 1 to rotate, thereby allowing testing of the assembled rotor 1 and stator 2. The fan outside the retaining ring can effectively improve the heat generation of rotor 1 and stator 2 during testing.

[0034] The extension shaft 4 is hollow. This reduces the weight of the extension shaft 4 and minimizes its impact on the center of gravity of the rotor 1.

[0035] In use, first lift the rotor 1 from the center of gravity position, then insert the rotor 1 into the stator 2. The extension tube can extend from the stator 2, so that the rotor 1 can be supported or lifted from both ends. The lifting device at the center of gravity position of the rotor 1 can be removed, so that the rotor 1 can be fully inserted into the stator 2, thus facilitating the assembly and disassembly of the rotor 1. After the rotor 1 is inserted into the stator 2, the annular groove can also be used as a lifting position, thereby increasing the lifting points and making the lifting position of the rotor 1 more flexible, thus increasing the flexibility of the assembly of the rotor 1 and the stator 2.

[0036] Example 2

[0037] Reference Figure 2 and Figure 3 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0038] The extension shaft 4 comprises a first extension shaft 41, at least one second extension shaft 42, and a third extension shaft 43;

[0039] The right end of the first extension shaft 41 is connected to the second retaining ring 12 via a bearing. The left end of the first extension shaft 41 is provided with an outward flange 411, and at least 8 bolt holes are equally spaced on the flange 411.

[0040] The right end of the second extension shaft 42 is provided with a first flange 421, and the first extension shaft 41 is connected through the first flange 421. The left end of the second extension shaft 42 is provided with a second flange 422, and the second extension shaft 42 is connected to another second extension shaft 42 or to a third extension shaft 43.

[0041] The right end of the third extension shaft 43 is provided with a third flange 431 that matches the second flange 422, and the left end of the third extension shaft 43 is provided with a lifting ring 432.

[0042] This invention optimizes the structure of the extension shaft 4. In use, the number of second extension shafts 42 can be increased or decreased according to the rotor 1 and stator 2, thereby changing the total length of the extension shaft 4 and thus meeting different hoisting requirements.

[0043] Reinforcing plates 44 are connected to the first flange 421, the second flange 422, and the third flange 431. The reinforcing plates 44 are arranged at equal intervals around the central axis of the extension shaft 4. This increases the strength of the extension shaft 4.

[0044] The reinforcing plate 44 has an opening 441. The opening 441 can be used as a lifting position, thereby increasing the number of lifting points and making the lifting position of the rotor 1 more flexible, thus increasing the flexibility of assembling the rotor 1 and the stator 2.

[0045] The distances from the openings 441 of the reinforcing plates 44 connected to the same flange to the central axis of the extension shaft 4 are different. This allows for the selection of different hoisting heights to adjust the tilt angle of the extension shaft 4, and consequently, the tilt angle of the rotor 1.

[0046] The reinforcing plate 44 is welded to the extension shaft 4, and the height of the reinforcing plate 44 is larger as it gets closer to the flange it is connected to. This utility model selects the connection relationship between the reinforcing plate 44 and the extension shaft 4, and optimizes the structure of the reinforcing plate 44, which can greatly increase the connection strength between the reinforcing plate 44 and the extension shaft 4, and greatly increase the connection strength between each extension shaft 4.

[0047] In use, the number of second extension shafts 42 can be increased or decreased depending on the rotor 1 and stator 2, thereby changing the total length of the extension shaft 4 to meet different hoisting requirements. Reinforcing plates 44 are used to increase the strength of the extension shaft 4, preventing bending and ensuring assembly accuracy when assembling the rotor 1 and stator 2. The distance from the opening 441 of each reinforcing plate 44 connected to the same flange to the central axis of the extension shaft 4 is different. This allows for the selection of different hoisting heights to adjust the tilt angle of the extension shaft 4, and consequently, the tilt angle of the rotor 1.

[0048] It should be noted that the above description illustrates the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotor assembly / disassembly tool, comprising a first retaining ring fitted on the right end of the rotor, wherein the right end of the first retaining ring is connected to a slip ring or exciter via a bearing, and further comprising a second retaining ring fitted on the left end of the rotor, characterized in that: The left end of the second retaining ring is connected to an extension shaft via a bearing, and a lifting ring is provided on the left end face of the extension shaft.

2. The rotor assembly / disassembly tool according to claim 1, characterized in that: The first retaining ring and the second retaining ring are provided with annular grooves with outward openings, and the plane in which the annular grooves are located is perpendicular to the central axis of the rotor.

3. The rotor assembly / disassembly tool according to claim 1, characterized in that: The extension shaft comprises a first extension shaft, at least one second extension shaft, and a third extension shaft; The right end of the first extension shaft is connected to the second retaining ring via a bearing, and the left end of the first extension shaft is provided with an outward flange, on which at least 8 bolt holes are equally spaced. The right end of the second extension shaft is provided with a first flange, and the first extension shaft is connected through the first flange. The left end of the second extension shaft is provided with a second flange, and the second extension shaft is connected to another second extension shaft or a third extension shaft through the second flange. The right end of the third extension shaft is provided with a third flange that matches the second flange, and the left end of the third extension shaft is provided with the lifting ring.

4. The rotor assembly / disassembly tool according to claim 3, characterized in that: The first flange, the second flange, and the third flange are all connected to reinforcing plates, which are arranged at equal intervals around the central axis of the extension shaft.

5. The rotor assembly / disassembly tool according to claim 4, characterized in that: The reinforcing plate has openings.

6. The rotor assembly / disassembly tool according to claim 5, characterized in that: The distances from the openings of the reinforcing plates connected to the same flange to the central axis of the extension shaft are different.

7. The rotor assembly / disassembly tool according to claim 4, characterized in that: The reinforcing plate is welded to the extension shaft, and the height of the reinforcing plate is larger as it gets closer to the flange it is connected to.

8. The rotor assembly / disassembly tool according to claim 1, characterized in that: The outer diameter of the side of the retaining ring away from the rotor is smaller than the outer diameter of the side of the retaining ring closer to the rotor. A fan is fitted on the side of the retaining ring away from the rotor, and the outer diameter of the fan is not greater than the outer diameter of the side of the retaining ring closer to the rotor.

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