Auxiliary device for paint dipping of exciter stator

Abstract

The utility model belongs to the technical field of exciter stator processing, and particularly relates to an auxiliary device for dipping paint on an exciter stator, which comprises a frame body used for assisting in dipping paint on the exciter stator, two front and back limiting pieces, a bottom fixing piece and a top limiting piece, and the four cross beams are fixedly connected between the two supporting plates. According to the utility model, the distance between the front and rear abutting plates can be adjusted through the distance adjusting mechanism, and the distance between the upper arc-shaped limiting plate and the lower arc-shaped limiting plate can be adjusted through the height adjusting mechanism, so that exciter stator bodies with different external diameters can be effectively limited and fixed; and the widths of the lower clamping groove and the upper clamping groove are sequentially reduced from inside to outside, so that exciter stator bodies with different widths and different outer diameters can be clamped and fixed, and the universality of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of exciter stator processing technology, and in particular to an auxiliary device for impregnating exciter stators with varnish. Background Technology

[0002] In a generator, the exciter is a crucial component. Simply put, its function is to supply current to the stator coils, generating a magnetic field that causes the generator to rotate. The exciter is typically coaxial with the generator; as the generator shaft rotates, the exciter rotates along with it. The alternating current (AC) generated inside the exciter is converted to direct current (DC) by a rectifier at the end. This DC current is then fed into the generator rotor through brushes and slip rings to generate a DC magnetic field. As the rotor rotates, the magnetic lines of force move relative to the stator coils, inducing an electromotive force (EMF) in the stator coils as the coils cut the magnetic lines of force. If the exciter stator is misaligned, it will rub against the exciter rotor, causing damage to the exciter. This misalignment often occurs during the auxiliary processes. The exciter stator needs to be impregnated with varnish to improve the windings' moisture resistance and electrical insulation strength. A crane is used to lift the exciter stator into the impregnation tank.

[0003] A search revealed an auxiliary device for impregnating exciter stators, authorized by publication number CN220440528U. This device includes an exciter stator placement frame and several sets of mounting hole sealing devices. The exciter stator placement frame comprises a frame, a pair of bottom support rods, several pairs of mounting brackets, and four hooks. The frame includes four uprights, a bottom frame, a middle frame, and two top crossbars; the bottom frame and middle frame are respectively connected to the bottom and middle of the four uprights; the two top crossbars connect the tops of the four uprights; and the pair of bottom support rods spans between the two bottom longitudinal rods of the bottom frame.

[0004] However, the auxiliary devices for impregnating exciter stators described above still have shortcomings. Although they facilitate the lifting of the exciter stator into the impregnation tank for impregnation, their specifications are relatively fixed, making it inconvenient to effectively clamp exciter stators of different diameters. When it is necessary to assist in impregnating exciter stators of another specification, a different specification of crane is required, which increases production costs. Therefore, we propose an auxiliary device for impregnating exciter stators to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings mentioned above by providing an auxiliary device for impregnating the stator of an exciter.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An auxiliary device for impregnating an exciter stator includes a frame for assisting in impregnating the exciter stator, two front and rear limiting members, a bottom fixing member, and a top limiting member. The frame includes two support plates and four crossbeams, with the four crossbeams fixedly connected between the two support plates. The front and rear limiting members include two connecting plates, with several abutment plates fixedly connected to the inner sides of the two connecting plates. The bottom fixing member includes a lower arc-shaped limiting plate with a lower locking groove at its top. The top limiting member includes an upper arc-shaped limiting plate with an upper locking groove at its bottom. The upper and lower locking grooves on the same side movably abut against the same exciter stator body between them and the two abutment plates. A height adjustment mechanism is provided between the upper arc-shaped limiting plate and the two support plates, and a spacing adjustment mechanism is provided between the two connecting plates and the two support plates.

[0008] A further feature of this invention is that the same base plate is fixedly connected to one side of the two support plates that are close to each other, and several lower arc-shaped limiting plates are fixedly connected to the top of the base plate.

[0009] A further feature of this invention is that the height adjustment mechanism includes a lifting screw fixedly connected to the top of a support plate, and a top plate fixedly connected to the top of several upper arc-shaped limiting plates. Two vertical plates are fixedly connected to the top of the top plate, and a fixing plate is fixedly connected to the top of each of the two vertical plates. The fixing plate is slidably sleeved on the outside of the lifting screw. An upper nut and a lower nut are threadedly sleeved on the outside of the lifting screw, and the fixing plate is movably abutting between the upper nut and the lower nut.

[0010] A further feature of this invention is that the top plate is slidably connected to the inner side of the two support plates.

[0011] A further feature of this invention is that the top of the fixing plate has a through hole, and the lifting screw is movably inserted into the through hole.

[0012] A further feature of this invention is that the spacing adjustment mechanism includes several threaded grooves formed in the support plate and two mounting plates fixedly connected to the back of the connecting plate. The back of the mounting plate is fixedly connected to an ear plate, and a fixing screw is threadedly connected to one side of the ear plate. The four fixing screws are respectively threaded into the corresponding threaded grooves.

[0013] A further feature of this invention is that all four connecting plates are slidably connected between the two support plates.

[0014] A further feature of this invention is that two hanging rods are fixedly connected to the sides of the two support plates that are far apart from each other, and one end of each of the four hanging rods is fixedly connected to a lifting ring.

[0015] A further feature of this invention is that a large circular hole is provided on one side of the support plate, and multiple elongated holes are provided on one side of the support plate.

[0016] In this utility model, an auxiliary device for impregnating exciter stators involves pushing two connecting plates and abutment plates inward to align a fixing screw with a corresponding threaded groove. This allows adjustment of the distance between the two abutment plates. After adjustment, the fixing screw is tightened, connecting the screw threadedly into the corresponding threaded groove, thus fixing the ear plate and mounting plate. This, in turn, fixes the two connecting plates and several abutment plates. Several exciter stator bodies are placed in the lower locking grooves of the corresponding lower arc-shaped limiting plates. Since the width of the lower locking grooves decreases from top to bottom, it not only allows for locking exciter stator bodies of different widths but also provides stable limiting and fixing for exciter stator bodies of different outer diameters. Because the distance between the two abutment plates has been adjusted, it serves to limit and position the exciter stator bodies during insertion.

[0017] In this utility model, an auxiliary device for impregnating an exciter stator is described. A top plate is placed between two support plates, and the upper locking groove of the upper arc-shaped limiting plate is locked onto the top of the exciter stator body. At the same time, a fixing plate is sleeved on the outside of the lifting screw and placed on top of the lower nut. By rotating the upper nut and the lower nut, the fixing plate, the vertical plate, the top plate and the upper arc-shaped limiting plate are moved downward, so that the exciter stator body is stably locked in the upper locking groove. This can limit and fix the exciter stator body between the upper locking groove, the lower locking groove and the two front and rear abutment plates, preventing it from falling and shaking and affecting the normal impregnation work. The large round hole and the long strip hole opened on the support plate, as well as the crossbeams set at the front and rear, will not affect the normal impregnation of the exciter stator body.

[0018] This utility model has a reasonable structural design. The spacing adjustment mechanism facilitates the adjustment of the distance between the two front and rear abutment plates, and the height adjustment mechanism allows for the adjustment of the distance between the upper and lower arc-shaped limiting plates. This effectively limits and fixes exciter stators of different outer diameters, preventing them from falling or shaking and affecting the normal impregnation process. Furthermore, because the widths of the lower and upper locking grooves decrease sequentially from the inside to the outside, it can not only lock exciter stators of different widths but also stably limit exciter stators of different outer diameters, improving the versatility of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of an auxiliary device for impregnating the stator of an exciter according to the present invention;

[0020] Figure 2This is a cross-sectional view of an auxiliary device for impregnating the stator of an exciter according to the present invention;

[0021] Figure 3 for Figure 1 A schematic diagram of the structure of part A;

[0022] Figure 4 for Figure 2 A structural diagram of section B;

[0023] Figure 5 This is a perspective view of the lower arc-shaped limiting plate of an auxiliary device for impregnating the stator of an exciter, as proposed in this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the exciter stator body, the lower arc-shaped limiting plate, the upper arc-shaped limiting plate, and the abutment plate of the auxiliary device for impregnating the exciter stator according to the present invention.

[0025] In the diagram: 1. Support plate; 2. Crossbeam; 3. Base plate; 4. Top plate; 5. Lower arc-shaped limiting plate; 6. Lower locking groove; 7. Upper arc-shaped limiting plate; 8. Vertical plate; 9. Fixing plate; 10. Upper nut; 11. Lifting screw; 12. Large round hole; 13. Long strip hole; 14. Hanging rod; 15. Lifting ring; 16. Connecting plate; 17. Abutment plate; 18. Threaded groove; 19. Through hole; 20. Mounting plate; 21. Ear plate; 22. Fixing screw; 23. Upper locking groove; 24. Exciter stator body; 25. Lower nut. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figure 1-6 An auxiliary device for impregnating an exciter stator includes a frame for assisting in impregnating the exciter stator, two front and rear limiting members, a bottom fixing member, and a top limiting member. The frame includes two support plates 1 and four crossbeams 2, with the four crossbeams 2 fixedly connected between the two support plates 1. The front and rear limiting members include two connecting plates 16, with several abutment plates 17 fixedly connected to the inner sides of the two connecting plates 16. The bottom fixing member includes a lower arc-shaped limiting plate 5, with a lower locking groove 6 at the top of the lower arc-shaped limiting plate 5. The top limiting member includes an upper arc-shaped limiting plate 7, with an upper locking groove 23 at the bottom of the upper arc-shaped limiting plate 7. The upper locking groove 23 and the lower locking groove 6 on the same side are movably abutting against the same exciter stator body 24 between the two abutment plates 17. A height adjustment mechanism is provided between the upper arc-shaped limiting plate 7 and the two support plates 1, and a spacing adjustment mechanism is provided between the two connecting plates 16 and the two support plates 1.

[0028] By adopting the above solution, the exciter stator body 24 can be fully fixed by the setting of two front and rear limiting parts, bottom fixing parts and top limiting parts, which improves the firmness of the exciter stator body 24 and prevents it from falling and shaking, thus affecting the normal impregnation work.

[0029] Specifically, the two support plates 1 are fixedly connected to the same base plate 3 on their sides that are close to each other, and several lower arc-shaped limiting plates 5 are fixedly connected to the top of the base plate 3, which is conducive to supporting and fixing the several lower arc-shaped limiting plates 5.

[0030] Specifically, the height adjustment mechanism includes a lifting screw 11 fixedly connected to the top of the support plate 1, and a top plate 4 fixedly connected to the top of several upper arc-shaped limiting plates 7. Two vertical plates 8 are fixedly connected to the top of the top plate 4, and a fixing plate 9 is fixedly connected to the top of each of the two vertical plates 8. The fixing plate 9 is slidably sleeved on the outside of the lifting screw 11. An upper nut 10 and a lower nut 25 are threadedly sleeved on the outside of the lifting screw 11, and the fixing plate 9 is movably abutted between the upper nut 10 and the lower nut 25.

[0031] The above scheme is adopted: the top plate 4, the upper arc-shaped limiting plate 7, the vertical plate 8, and the fixing plate 9 are placed between the two support plates 1, and the upper locking groove 23 opened by the upper arc-shaped limiting plate 7 is locked on the top of the exciter stator body 24. At the same time, the fixing plate 9 is sleeved on the outside of the lifting screw 11 and placed on the top of the lower nut 25. By rotating the upper nut 10 and the lower nut 25, the fixing plate 9, the vertical plate 8, the top plate 4, and the upper arc-shaped limiting plate 7 are moved downward, so that the exciter stator body 24 is firmly locked in the upper locking groove 23. In this way, the exciter stator body 24 can be limited and fixed between the upper locking groove 23, the lower locking groove 6, and the two front and rear abutment plates 17, preventing it from falling and shaking and affecting the normal impregnation work.

[0032] Specifically, the top plate 4 is slidably connected to the inner side of the two support plates 1, and the top of the fixed plate 9 is provided with a through hole 19. The lifting screw 11 is movably inserted into the through hole 19, which facilitates the guidance of the top plate 4 and also allows the fixed plate 9 to pass through the lifting screw 11.

[0033] Specifically, the spacing adjustment mechanism includes several threaded grooves 18 formed in the support plate 1, and two mounting plates 20 fixedly connected to the back of the connecting plate 16. The back of the mounting plate 20 is fixedly connected to an ear plate 21, and a fixing screw 22 is threadedly connected to one side of the ear plate 21. The four fixing screws 22 are respectively threaded into the corresponding threaded grooves 18.

[0034] The above scheme is adopted as follows: Based on the outer diameter of the exciter stator body 24, the two connecting plates 16 and the abutment plates 17 are pushed inward so that the fixing screw 22 is aligned with the threaded groove 18 at the corresponding position. The distance between the two abutment plates 17 can be adjusted, and this distance is the outer diameter of the exciter stator body 24. After adjustment, the fixing screw 22 is tightened so that the fixing screw 22 is threaded into the threaded groove 18 at the corresponding position. The ear plate 21 and the mounting plate 20 can be fixed, thereby fixing the two connecting plates 16 and several abutment plates 17, so as to limit and fix the exciter stator body 24 with different outer diameters in the front and rear.

[0035] Specifically, the four connecting plates 16 are slidably connected between the two support plates 1, which can guide and limit the movement of the connecting plates 16, making their movement more stable and smooth.

[0036] Specifically, two lifting rods 14 are fixedly connected to the two support plates 1 on the side that are far apart from each other, and one end of each of the four lifting rods 14 is fixedly connected to a lifting ring 15, which facilitates hoisting.

[0037] Specifically, a large round hole 12 is provided on one side of the support plate 1, and multiple elongated holes 13 are provided on the other side of the support plate 1. The large round hole 12 and elongated holes 13 provided on the support plate 1, as well as the crossbeams 2 provided at the front and rear, will not affect the normal impregnation of the exciter stator body 24.

[0038] In this invention, during use, based on the outer diameter of the exciter stator body 24, the two connecting plates 16 and the abutment plate 17 are pushed inwards, aligning the fixing screw 22 with the corresponding threaded groove 18. This allows adjustment of the distance between the two abutment plates 17, which is the outer diameter of the exciter stator body 24. After adjustment, the fixing screw 22 is tightened, ensuring it is threaded into the corresponding threaded groove 18. This allows for the mounting of the ear plate 21 and mounting plate 20 (the ear plate 21 and mounting plate 20 can form an angle iron, facilitating the mounting of the connecting plate 16). (For fixed use) fixation, thereby fixing the two connecting plates 16 and several abutment plates 17; then several exciter stator bodies 24 are placed in the lower locking grooves 6 opened by the corresponding lower arc-shaped limiting plates 5. Since the width of the lower locking grooves 6 decreases from top to bottom, it can not only lock exciter stator bodies 24 of different widths, but also stably limit and fix exciter stator bodies 24 of different outer diameters. Since the distance between the two abutment plates 17 at the front and rear has been adjusted, it can achieve the purpose of front and rear limiting and positioning of the exciter stator bodies 24 when they are placed in.

[0039] Finally, the top plate 4, the upper arc-shaped limiting plate 7, the vertical plate 8, and the fixing plate 9 are placed between the two support plates 1, so that the upper locking groove 23 of the upper arc-shaped limiting plate 7 is locked onto the top of the exciter stator body 24. At the same time, the fixing plate 9 is sleeved on the outside of the lifting screw 11 and placed on the top of the lower nut 25. By rotating the upper nut 10 and the lower nut 25, the fixing plate 9, the vertical plate 8, the top plate 4, and the upper arc-shaped limiting plate 7 are moved downward, so that the exciter stator body 24 is firmly locked in the upper locking groove 23. This can limit and fix the exciter stator body 24 between the upper locking groove 23, the lower locking groove 6, and the two front and rear abutment plates 17, preventing it from falling and shaking and affecting the normal impregnation work. The large round hole 12 and the long strip hole 13 opened on the support plate 1, as well as the crossbeams 2 set at the front and rear, will not affect the normal impregnation of the exciter stator body 24.

Claims

1. An auxiliary device for impregnating the stator of an exciter, characterized in that, The device includes a frame for auxiliary impregnation of the exciter stator, two front and rear limiting members, a bottom fixing member, and a top limiting member. The frame includes two support plates (1) and four crossbeams (2), with the four crossbeams (2) fixedly connected between the two support plates (1). The front and rear limiting members include two connecting plates (16), with several abutment plates (17) fixedly connected to the inner sides of the two connecting plates (16). The bottom fixing member includes a lower arc-shaped limiting plate (5), with a top opening of the lower arc-shaped limiting plate (5). The lower locking groove (6) and the top limiting member include an upper arc-shaped limiting plate (7). The bottom of the upper arc-shaped limiting plate (7) is provided with an upper locking groove (23). The upper locking groove (23) and the lower locking groove (6) located on the same side are movably abutting against the same exciter stator body (24) between the two abutting plates (17). A height adjustment mechanism is provided between the upper arc-shaped limiting plate (7) and the two support plates (1). A spacing adjustment mechanism is provided between the two connecting plates (16) and the two support plates (1).

2. The auxiliary device for impregnating the stator of an exciter according to claim 1, characterized in that, Two support plates (1) are fixedly connected to the same base plate (3) on their side that are close to each other, and several lower arc-shaped limiting plates (5) are fixedly connected to the top of the base plate (3).

3. The auxiliary device for impregnating the stator of an exciter according to claim 1, characterized in that, The height adjustment mechanism includes a lifting screw (11) fixedly connected to the top of the support plate (1) and a top plate (4) fixedly connected to the top of several upper arc-shaped limiting plates (7). The top of the top plate (4) is fixedly connected to two vertical plates (8), and the top of each of the two vertical plates (8) is fixedly connected to a fixing plate (9). The fixing plate (9) is slidably sleeved on the outside of the lifting screw (11). The outside of the lifting screw (11) is threaded with an upper nut (10) and a lower nut (25). The fixing plate (9) is movably abutted between the upper nut (10) and the lower nut (25).

4. An auxiliary device for impregnating an exciter stator according to claim 3, characterized in that, The top plate (4) is slidably connected to the inner side of the two support plates (1).

5. An auxiliary device for impregnating an exciter stator according to claim 3, characterized in that, The top of the fixed plate (9) is provided with a through hole (19), and the lifting screw (11) is movably inserted into the through hole (19).

6. An auxiliary device for impregnating an exciter stator according to claim 1, characterized in that, The spacing adjustment mechanism includes several threaded grooves (18) formed in the support plate (1) and two mounting plates (20) fixedly connected to the back of the connecting plate (16). The back of the mounting plate (20) is fixedly connected to an ear plate (21), and a fixing screw (22) is threadedly connected to one side of the ear plate (21). The four fixing screws (22) are respectively threaded into the corresponding threaded grooves (18).

7. An auxiliary device for impregnating an exciter stator according to claim 1, characterized in that, All four connecting plates (16) are slidably connected between the two support plates (1).

8. An auxiliary device for impregnating an exciter stator according to claim 1, characterized in that, Two rods (14) are fixedly connected to the two support plates (1) on the side that is far apart from each other, and a lifting ring (15) is fixedly connected to one end of each of the four rods (14).

9. An auxiliary device for impregnating an exciter stator according to claim 1, characterized in that, A large circular hole (12) is provided on one side of the support plate (1), and multiple elongated holes (13) are provided on one side of the support plate (1).

Images