Supporting tool for separating built-in shaft sleeve and rotating shaft of generator

Abstract

The utility model discloses a supporting tool for separating a built-in shaft sleeve and a rotating shaft of a generator, which comprises a base and a supporting assembly, the supporting assembly is arranged between an exciter rotor assembly and a main generator rotor assembly and comprises a plurality of first supporting rings, and each first supporting ring is sleeved on the rotating shaft in a sliding manner from top to bottom; the first supporting ring on the uppermost layer abuts against the lower surface of the shaft sleeve, the first supporting ring on the lowermost layer is erected on the base, the diameter of each first supporting ring is gradually increased from top to bottom, and each first supporting ring comprises two first half rings and a connecting piece. The supporting tool has the advantages that the supporting tool is suitable for products which are small in space, internally installed in shaft sleeves and not prone to stress after parts are assembled, stable supporting force can be provided for the internally installed shaft sleeves, balanced stress of the shaft sleeves is achieved, and the situation that the shaft sleeves are deformed or damaged due to stress in the process of separating a rotating shaft from the shaft sleeves is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of disassembly tooling, in particular to a supporting tooling for separating a built-in shaft sleeve and a rotating shaft of a generator. Background Art

[0002] Aircraft generators are an important part of the aircraft power supply system, and their normal operation is crucial to the safety and performance of the aircraft. However, due to various reasons, aircraft generators may fail or be damaged, and then they need to be repaired. Most of these failures exist in the rotor assembly, especially the replacement of rectifier diodes after damage.

[0003] Existing generator rotor components such as Figure 1 - Figure 2 As shown, the generator rotor assembly 100 includes a rotating shaft 110, an exciter rotor assembly 120 and a main generating rotor assembly 130. The exciter rotor assembly 120 and the main generating rotor assembly 130 are both sleeved on the rotating shaft 110 at intervals. The exciter rotor assembly 120 includes a columnar structure housing 121, a sleeve 122 and a plurality of rectifier diodes 123. The housing 121 is opened on the side close to the main generating rotor assembly 130. The sleeve 122 is arranged in the housing 121 and sleeved on the rotating shaft 110. The sleeve 122 and the rotating shaft 110 are interference fit. Each of the rectifier diodes 123 is arranged in the housing 121 and is circumferentially arranged on the side of the sleeve 122.

[0004] When replacing the rectifier diode, it is necessary to overcome the interference fit force between the rotating shaft and the sleeve and remove the rotating shaft. In order to ensure that the sleeve is not deformed or damaged during the separation of the rotating shaft and the sleeve, it is necessary to use a tool to provide a balanced support force for the sleeve. In addition, due to the small spacing between the exciter rotor assembly and the main generator rotor assembly, the existing disassembly tool (such as the disassembly tool for the shaft end slip ring assembly during wind turbine maintenance disclosed in application No. 202020866012.3) is not suitable for products with small space after the above-mentioned parts are assembled, the sleeve is built-in, and it is not easy to be stressed. For built-in thin-walled parts, balanced stress on the sleeve cannot be achieved, which can easily cause the sleeve to be deformed or damaged during the separation process. Utility Model Content

[0005] The purpose of the utility model is to overcome the above-mentioned technical deficiencies and propose a supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator, so as to solve the technical problems that the disassembly tool in the prior art is not suitable for products with small space after parts assembly, built-in shaft sleeves, and not easy to be subjected to stress, and balanced stress on the shaft sleeve cannot be achieved for built-in thin-walled parts, and the shaft sleeve is easily deformed or damaged due to stress during the separation process.

[0006] In order to achieve the above technical purpose, the technical solution of the utility model provides a supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator, including:

[0007] Base;

[0008] A support assembly is arranged between the exciter rotor assembly and the main generator rotor assembly, and comprises a plurality of first support rings, each of which is slidably sleeved on the rotating shaft from top to bottom, the first support ring of the uppermost layer abuts against the lower surface of the sleeve, and the first support ring of the lowermost layer is mounted on the base, the diameter of each of the first support rings gradually increases from top to bottom, and each of the first support rings comprises two first half rings and a connecting piece, and the connecting piece is used for detachably and fixedly connecting the two first half rings.

[0009] Furthermore, the support assembly also includes a second support ring, which is arranged below each of the first support rings and is slidably mounted on the rotating shaft. The upper surface of the second support ring abuts against the lowest layer of the first support ring, and the upper surface of the second support ring also abuts against the outer shell of the exciter rotor assembly. The second support ring is mounted on the base.

[0010] Furthermore, each of the second support rings includes two second half rings, and the two second half rings are detachably connected to each other.

[0011] Furthermore, the base includes a U-shaped mounting seat and two mounting plates, and the two mounting plates are each provided with a semi-convex mounting groove, and both ends of the two mounting plates are detachably mounted on the upper surfaces of the two vertical plates of the mounting seat via screws, and the two mounting grooves are used to enclose a through hole with an inverted convex structure, and the second support ring is placed in the through hole, and the side wall of the second support ring abuts against the hole wall of the through hole, and the lower surface of the second support ring abuts against the bottom of the large hole of the through hole.

[0012] Furthermore, except for the first support ring in the top layer, the outer circumference of the upper surface of each of the first support rings in other layers has a step with an annular structure, and the inner side wall of the step abuts against the outer side wall of the first support ring above it.

[0013] Furthermore, the diameter of each of the first support rings is smaller than the inner cavity diameter of the housing.

[0014] Furthermore, the connecting member is a first magnet, which is fixed on one of the first half rings, and the other first half ring is made of iron material, so that the two first half rings are connected by attraction via the first magnet.

[0015] Furthermore, the diameter of the second support ring is greater than the outer diameter of the housing.

[0016] Furthermore, a first cavity is formed on the upper surface of the second support ring, and the first cavity is used for placing the bottom of the shell.

[0017] Furthermore, a second cavity is formed on the lower surface of the second support ring, and the second cavity is used for placing the top of the main generator rotor assembly.

[0018] Compared with the prior art, the beneficial effects of the utility model include: when in use, by measuring the spacing between the exciter rotor assembly and the main generator rotor assembly, and designing the thickness of each first support ring according to the width of the spacing, so that the thickness of each first support ring is smaller than the spacing between the exciter rotor assembly and the main generator rotor assembly, each first support ring is sequentially sleeved on the rotating shaft until the topmost first support ring abuts against the sleeve, and the bottommost first support ring is placed on the base, and the rotating shaft is pressed downward by the lower pressing shaft of the press until the rotating shaft and the sleeve are separated. Since the diameter of each first support ring gradually increases from top to bottom, the force exerted on the sleeve can be gradually dispersed outward from top to bottom. This support tooling is suitable for products with small space after parts assembly, built-in sleeves, and not easily subjected to stress. It can provide stable supporting force for the built-in sleeve, realize balanced stress on the sleeve, and avoid deformation or damage of the sleeve due to stress during the separation of the rotating shaft and the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a structural schematic diagram of an existing generator rotor assembly;

[0020] Figure 2 is a cross-sectional view of a conventional generator rotor assembly;

[0021] Figure 3 This is a schematic diagram of the structure of a supporting tool for separating a built-in shaft sleeve and a rotating shaft of a generator provided by the utility model when supporting a generator rotor assembly;

[0022] Figure 4 yes Figure 3 A cross-sectional view of a supporting tool for separating a built-in shaft sleeve from a rotating shaft of a generator when supporting a generator rotor assembly;

[0023] Figure 5 yes Figure 4 A schematic diagram of the structure after omitting the base, the rotating shaft and the main generator rotor assembly;

[0024] Figure 6 It is a three-dimensional structural schematic diagram of a supporting tooling for separating a built-in shaft sleeve and a rotating shaft of a generator provided by the utility model;

[0025] Figure 7 yes Figure 6A cross-sectional view of a supporting tool for separating a built-in shaft sleeve and a rotating shaft of a generator;

[0026] In the figure: 100 - generator rotor assembly, 110 - rotating shaft, 120 - exciter rotor assembly, 121 - housing, 122 - bushing, 123 - rectifier diode, 130 - main generator rotor assembly, 200 - base, 210 - mounting seat, 220 - mounting plate, 221 - mounting groove, 222 - through hole, 300 - support assembly, 310 - first support ring, 311 - first half ring, 312 - step, 320 - second support ring, 321 - second half ring, 322 - first cavity, 323 - second cavity. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] The utility model provides a supporting tool for separating a built-in shaft sleeve and a rotating shaft of a generator, and its structure is as follows Figure 3 - Figure 5 As shown, it includes a base 200 and a support assembly 300, and the support assembly 300 is arranged between the exciter rotor assembly 120 and the main generator rotor assembly 130, and includes a plurality of first support rings 310, each of which is slidably sleeved on the rotating shaft 110 from top to bottom, the first support ring 310 of the uppermost layer abuts against the lower surface of the sleeve 122, and the first support ring 310 of the lowermost layer is mounted on the base 200, and the diameter of each of the first support rings 310 gradually increases from top to bottom, and each of the first support rings 310 includes two first half rings 311 and a connecting piece, and the connecting piece is used to detachably and fixedly connect the two first half rings 311.

[0029] When in use, by measuring the distance between the exciter rotor assembly 120 and the main generator rotor assembly 130, and designing the thickness of each first support ring 310 according to the width of the distance, so that the thickness of each first support ring 310 is smaller than the distance between the exciter rotor assembly 120 and the main generator rotor assembly 130, each first support ring 310 is sequentially sleeved on the rotating shaft 110, until the uppermost first support ring 310 abuts against the shaft sleeve 122, and the lowermost first support ring 310 is placed on the base 200, and the lower pressing shaft of the press machine is downwardly pressed. The rotating shaft 110 is pressed until the rotating shaft 110 is separated from the sleeve 122. In the process of applying downward pressure to the rotating shaft 110, since the diameter of each of the first support rings 310 gradually increases from top to bottom, the force exerted on the sleeve 122 can be gradually dispersed outward from top to bottom. This supporting tool is suitable for products with small space after parts assembly, built-in sleeve 122, and not easily subjected to stress. It can provide stable supporting force for the built-in sleeve 122, achieve balanced stress on the sleeve 122, and avoid deformation or damage of the sleeve 122 due to stress during the process of separating the rotating shaft 110 and the sleeve 122.

[0030] As a preferred embodiment, please refer to Figure 3 and Figure 6 The support assembly 300 also includes a second support ring 320, which is arranged below each of the first support rings 310 and is slidably sleeved on the rotating shaft 110. The upper surface of the second support ring 320 abuts against the first support ring 310 of the lowest layer, and the upper surface of the second support ring 320 also abuts against the outer shell 121 of the exciter rotor assembly 120. The second support ring 320 is mounted on the base 200. The outer shell 121 can be supported by the second support ring 320, so that the outer shell 121 can be balanced in force, thereby avoiding deformation or damage of the outer shell 121 due to force during the separation of the rotating shaft 110 and the sleeve 122.

[0031] As a preferred embodiment, please refer to Figure 7 The second support ring 320 includes two second half rings 321 , and the two second half rings 321 are detachably connected to each other, so that the second support ring 320 can be sleeved on the rotating shaft 110 .

[0032] As a preferred embodiment, please refer to Figure 3 and Figure 4The base 200 includes a U-shaped mounting seat 210 and two mounting plates 220. The two mounting plates 220 are each provided with a semi-convex mounting groove 221. Both ends of the two mounting plates 220 are detachably mounted on the upper surfaces of the two vertical plates of the mounting seat 210 via screws, and a through hole 222 with an inverted convex structure is enclosed by the two mounting grooves 221. The second support ring 320 is placed in the through hole 222, and the side wall of the second support ring 320 abuts against the hole wall of the through hole 222. The lower surface of the second support ring 320 abuts against the bottom of the large hole of the through hole 222. The second support ring 320 is limited in the horizontal direction via the hole wall of the through hole 222, and the second support ring 320 is supported via the bottom of the large hole of the through hole 222.

[0033] As a preferred embodiment, please refer to Figure 7 Except for the first support ring 310 on the top layer, the outer circle of the upper surface of each of the first support rings 310 in other layers has a step 312 with an annular structure. The inner wall of the step 312 abuts against the outer wall of the first support ring 310 above it. The step 312 can make the force on the first support ring 310 more uniform, avoiding cracking due to uneven force, which leads to the failure of decomposition of the rotating shaft 110 and the sleeve 122.

[0034] As a preferred embodiment, please refer to Figure 5 The diameter of each of the first support rings 310 is smaller than the inner cavity diameter of the outer shell 121 , so that each of the first support rings 310 can enter the inner cavity of the outer shell 121 .

[0035] As a preferred embodiment, please refer to Figure 7 The connecting member is a first magnet, which is fixed on one of the first half rings 311, and the other first half ring 311 is made of iron material, so that the two first half rings 311 are connected by attraction via the first magnet, making the detachable connection of the two first half rings 311 more convenient.

[0036] As a preferred embodiment, please refer to Figure 5 The diameter of the second support ring 320 is greater than the outer diameter of the outer shell 121 , so that the outer shell 121 can be supported by the second support ring 320 .

[0037] As a preferred embodiment, please refer to Figure 5 and Figure 7 A first cavity 322 is formed on the upper surface of the second support ring 320 , and the first cavity 322 is used for placing the bottom of the shell 121 , so that the second support ring 320 has a better contact effect with the shell 121 .

[0038] As a preferred embodiment, please refer to Figure 5 and Figure 7 A second cavity 323 is formed on the lower surface of the second support ring 320 , and the second cavity 323 is used for placing the top of the main generator rotor assembly 130 , so that the second support ring 320 can have a better contact effect with the main generator rotor assembly 130 .

[0039] As a preferred embodiment, please refer to Figure 3 The diameter of the small hole of the through hole 222 is larger than the diameter of the main generator rotor assembly 130 , so that the upper end of the main generator rotor assembly 130 can be placed in the second cavity 323 .

[0040] In order to better understand the present invention, the following Figure 1 - Figure 7 The working principle of the technical solution of the utility model is described in detail:

[0041] When in use, by measuring the distance between the exciter rotor assembly 120 and the main generator rotor assembly 130, and designing the thickness of each of the first support rings 310 according to the width of the distance, so that the thickness of each of the first support rings 310 is smaller than the distance between the exciter rotor assembly 120 and the main generator rotor assembly 130, each of the first support rings 310 and the second support rings 320 are respectively and sequentially sleeved on the rotating shaft 110 until the uppermost first support ring 310 abuts against the shaft sleeve 122, and the second support rings 320 are respectively and sequentially sleeved on the rotating shaft 110. The upper surface of the ring 320 abuts against the first support ring 310 of the lowest layer, and the upper surface of the second support ring 320 also abuts against the outer shell 121 of the exciter rotor assembly 120. The outer shell 121 can be supported by the second support ring 320, so that the outer shell 121 can be balanced in force, and the outer shell 121 can be prevented from being deformed or damaged by force during the separation of the rotating shaft 110 and the sleeve 122, and the second support ring 320 is placed in the two mounting grooves 221 opened on the two mounting plates 220. In the through hole 222 of the enclosed inverted convex structure, since the side wall of the second support ring 320 abuts against the hole wall of the through hole 222, the lower surface of the second support ring 320 abuts against the bottom of the large hole of the through hole 222, the second support ring 320 can be limited in the horizontal direction through the hole wall of the through hole 222, and the second support ring 320 is supported by the bottom of the large hole of the through hole 222, and then the rotating shaft 110 is pressed downward by the lower pressing shaft of the press until the rotating shaft 110 and the sleeve 122 are aligned. Until separation, in the process of applying downward pressure to the rotating shaft 110, since the diameter of each of the first support rings 310 gradually increases from top to bottom, the force exerted on the sleeve 122 can be gradually dispersed outward from top to bottom. This supporting tool is suitable for products with small space after parts assembly, built-in sleeve 122, and not easily subjected to force. It can provide a stable supporting force for the built-in sleeve 122, achieve balanced force on the sleeve 122, and avoid deformation or damage of the sleeve 122 due to force during the process of separating the rotating shaft 110 and the sleeve 122.

[0042] The utility model provides a support tool for separating the built-in shaft sleeve and the rotating shaft of a generator, which has the following beneficial effects:

[0043] (1) Each of the first support rings 310 has a step 312 of an annular structure at the outer circumference of the upper surface. The inner side wall of the step 312 abuts against the outer side wall of the first support ring 310 above it. The step 312 can make the force on the first support ring 310 more uniform, thereby avoiding cracking due to uneven force, which leads to the failure of the shaft 110 and the sleeve 122 to be disassembled;

[0044] (2) The second support ring 320 can support the outer shell 121, so that the outer shell 121 can be subjected to balanced force, thereby preventing the outer shell 121 from being deformed or damaged due to force during the process of separating the rotating shaft 110 and the sleeve 122;

[0045] (3) This supporting tool is suitable for products with small space after parts assembly, built-in sleeve 122, and not easily subjected to stress. It can provide stable supporting force for the built-in sleeve 122, achieve balanced stress on the sleeve 122, and avoid deformation or damage of the sleeve 122 due to stress during the process of separating the rotating shaft 110 and the sleeve 122.

[0046] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A supporting tool for separating a built-in shaft sleeve from a rotating shaft of a generator, characterized in that: include: Base; A support assembly is arranged between the exciter rotor assembly and the main generator rotor assembly, and comprises a plurality of first support rings, each of which is slidably sleeved on the rotating shaft from top to bottom, the first support ring of the uppermost layer abuts against the lower surface of the sleeve, and the first support ring of the lowermost layer is mounted on the base, the diameter of each of the first support rings gradually increases from top to bottom, and each of the first support rings comprises two first half rings and a connecting piece, and the connecting piece is used for detachably and fixedly connecting the two first half rings.

2. The supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator according to claim 1 is characterized in that: The support assembly also includes a second support ring, which is arranged below each of the first support rings and is slidably mounted on the rotating shaft. The upper surface of the second support ring abuts against the first support ring of the lowest layer, and the upper surface of the second support ring also abuts against the outer shell of the exciter rotor assembly. The second support ring is mounted on the base.

3. The supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator according to claim 2 is characterized in that: The second supporting rings each include two second half rings, and the two second half rings are detachably connected to each other.

4. The supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator according to claim 2, characterized in that: The base includes a U-shaped mounting seat and two mounting plates, and a semi-convex mounting groove is provided on the two mounting plates. Both ends of the two mounting plates are detachably mounted on the upper surfaces of the two vertical plates of the mounting seat by screws, and a through hole with an inverted convex structure is enclosed by the two mounting grooves. The second support ring is placed in the through hole, and the side wall of the second support ring abuts against the hole wall of the through hole, and the lower surface of the second support ring abuts against the bottom of the large hole of the through hole.

5. The supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator according to claim 1, characterized in that: Except for the first support ring in the top layer, the outer circumference of the upper surface of each of the first support rings in other layers has a step with an annular structure, and the inner side wall of the step abuts against the outer side wall of the first support ring above it.

6. The supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator according to claim 1, characterized in that: The diameter of each of the first support rings is smaller than the inner cavity diameter of the housing.

7. The supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator according to claim 1, characterized in that: The connecting member is a first magnet, which is fixed on one of the first half rings, and the other first half ring is made of iron material, so that the two first half rings are connected by attraction via the first magnet.

8. The supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator according to claim 2, characterized in that: The diameter of the second support ring is larger than the outer diameter of the housing.

9. The supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator according to claim 8, characterized in that: A first cavity is formed on the upper surface of the second supporting ring, and the first cavity is used for placing the bottom of the shell.

10. The supporting tool for separating the built-in shaft sleeve and the rotating shaft of the generator according to claim 9, characterized in that: A second cavity is formed on the lower surface of the second support ring, and the second cavity is used for placing the top of the main generator rotor assembly.

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