Exciter inner stator drawing and penetrating device

Abstract

The utility model discloses an exciter inner stator drawing and penetrating device, which belongs to the technical field of large generator maintenance and comprises a movable base, lifting assemblies are mounted at four corners of the top of the movable base, and two groups of electric sliding tables are symmetrically mounted at the top of the movable base; through the arrangement of the movable base, the use position of the device can be moved, after the device is moved to the corresponding position of an exciter, the connecting assembly can be lifted to the corresponding position of the inner stator body through the lifting assembly, and then the inner stator body and the connecting disc are connected together through the bolt. Then the support can be moved through the electric sliding table, the inner stator body is pulled out of the exciter, and the auxiliary supporting assembly can play an auxiliary supporting role on the bottom of the inner stator body in the pulling-out process, so that the use stability of the device is improved; the situation that the gravity center of the device shifts due to the fact that the weight of the inner stator body is too heavy, and the device is unstable in use is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of large generator maintenance, in particular to a stator drawing and inserting device for an exciter. Background Technique

[0002] For the exciter coaxially installed with a large generator, after a certain working cycle, it needs to be maintained and repaired. When disassembling, it is often necessary to first draw out its inner stator, and then make corresponding work arrangements for the inside and outside of the exciter, such as maintenance, inspection, repair, testing, etc. Finally, the inner stator is inserted back to continue the next working cycle. At present, during the process of drawing out and inserting the inner stator of the exciter supporting a large generator, due to its large weight, it is extremely easy to have problems of unstable movement.

[0003] For example, Chinese Patent No. CN211744264U discloses a stator drawing and inserting device for an exciter, which includes a moving frame. A spirit level for measuring whether the moving frame is horizontal is arranged on the moving frame. A connecting flange for connecting the inner stator is also arranged on the moving frame. A laser pen for shooting a laser into the center of the corresponding screw hole on the inner stator is arranged on the connecting flange. The moving frame is slidably arranged on the base in the radial and axial directions. Heavy-duty universal casters for moving the base and adjusting foot pads for lifting the base are arranged on the base. The utility model saves the preparation time required for the original work of first assembling the guide rail and the bracket and then carrying out the drawing and inserting work, and can efficiently adjust the coaxial positioning accuracy of the inner stator. Even when performing the drawing and inserting actions in a state where the air gap is only 0.5 mm, there will be no friction or damage to the inner stator, saving time and manpower.

[0004] For the stator drawing and inserting device for an exciter involved in the above patent, the inner stator is drawn out of the exciter through the moving frame. The inner stator of a large generator is heavy, and during the drawing and inserting process, it is extremely easy to cause the center of gravity of the entire device to be unstable and lead to tipping problems. Therefore, we need to propose a stator drawing and inserting device for an exciter. Content of the Utility Model

[0005] The purpose of the utility model is to provide a stator drawing and inserting device for an exciter, which has the advantage of improving the stability of drawing and inserting the inner stator, so as to solve the problems put forward in the above background technique.

[0006] To achieve the above object, the utility model provides a device for extracting and inserting the inner stator of an exciter, which includes a moving base. Lifting components are installed at the four corners of the top of the moving base. Two groups of electric sliding tables are symmetrically installed on the top of the moving base. A moving plate is fixedly connected to the moving end of the electric sliding table. A bracket is fixedly installed on the top of the moving plate. An inner stator body is arranged on one side of the bracket. A connecting component is arranged between the inner stator body and the bracket. One end of the inner stator body is fixedly connected to one side of the bracket through the connecting component. An auxiliary supporting component for auxiliary supporting the inner stator body is arranged on the top of the moving base and below the inner stator body.

[0007] Preferably, the auxiliary supporting component includes a fixed seat fixedly installed on the top of the moving base. A fixed supporting seat is fixedly installed on the top of the fixed seat. A moving supporting seat is arranged on one side of the fixed supporting seat. An active component is arranged at the bottom of the moving supporting seat. The bottom of the moving supporting seat is movably connected to the top of the fixed seat through the active component. A tension spring is fixedly installed between the fixed supporting seat and the moving supporting seat. A connecting plate is fixedly installed on the surface of one group of the moving supporting seats close to the moving plate. The bottom of the connecting plate is fixedly connected to the top of the moving plate. Rolling components for reducing friction are arranged on the tops of the moving supporting seat and the fixed supporting seat.

[0008] Preferably, the active component includes two fixed grooves opened on the top of the fixed seat. A slider is slidably connected to the inner cavity of the fixed groove. The top of the slider penetrates through the fixed groove and extends to the outside of the fixed groove and is fixedly connected to the bottom of the moving supporting seat. A limiting component is also arranged between the surface of the slider and the inner wall of the fixed groove.

[0009] Preferably, the limiting component includes limiting blocks fixedly installed on both sides of the slider. Limiting grooves adapted to the limiting blocks are opened on both sides of the inner cavity of the fixed groove. The surface of the limiting block is slidably connected to the inner wall of the limiting groove.

[0010] Preferably, the rolling component includes arc-shaped grooves opened on the tops of the fixed supporting seat and the moving supporting seat. A roller is fixedly installed in the inner cavity of the arc-shaped groove. The top of the roller is in rolling connection with the bottom of the inner stator body.

[0011] Preferably, the lifting component includes lifting cylinders fixedly installed at the four corners of the top of the moving base. The telescopic end of the lifting cylinder penetrates through the moving base and extends to the lower part of the moving base and is fixedly installed with a floor anchor.

[0012] Preferably, the connecting component includes a connecting disc fixedly installed on one side of the bracket. Connecting holes corresponding to the inner stator body are opened on both sides of the connecting disc.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] With the setting of the mobile base in the present utility model, the use position of the device can be moved. After moving the device to the corresponding position of the exciter, the connecting component can be lifted to the corresponding position of the inner stator body through the lifting component, and then the inner stator body and the connecting plate can be connected together by bolts. Then, the support can be moved through the electric sliding table, and the inner stator body can be pulled out from the exciter. During the extraction process, the auxiliary support component can play an auxiliary support role on the bottom of the inner stator body to improve the stability of the device in use and prevent the center of gravity of the device from shifting due to the excessive weight of the inner stator body, resulting in unstable use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic structural diagram of the present utility model when the auxiliary support component is in use;

[0017] Figure 3 is a schematic overall structural diagram of the auxiliary support component of the present utility model;

[0018] Figure 4 is a schematic exploded structural diagram of the auxiliary support component of the present utility model.

[0019] In the figure: 1, mobile base; 2, electric sliding table; 3, moving plate; 4, support; 5, inner stator body; 6, fixed seat; 7, fixed support seat; 8, moving support seat; 9, tension spring; 10, connecting plate; 11, fixed groove; 12, slider; 13, limiting block; 14, limiting groove; 15, arc groove; 16, roller; 17, lifting oil cylinder; 18, anchor bolt; 19, connecting plate; 20, connecting hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4, the utility model provides an inner stator drawing-in and drawing-out device for an exciter, which includes a moving base 1. Lifting components are installed at the four corners of the top of the moving base 1. The lifting components include lifting cylinders 17 fixedly installed at the four corners of the top of the moving base 1. The telescopic ends of the lifting cylinders 17 penetrate through the moving base 1 and extend to the lower part of the moving base 1, where feet 18 are fixedly installed. Through the setting of the moving base 1, the use position of this device can be moved. Through the setting of the lifting components, the overall height of this device can be adjusted. And when adjusting the height, the feet 18 will contact the ground, causing the moving base 1 to be separated from the ground, so as to improve the stability of this device during use.

[0022] Preferably, two groups of electric sliding tables 2 are symmetrically installed on the top of the moving base 1. The moving ends of the electric sliding tables 2 are fixedly connected with a moving plate 3. A bracket 4 is fixedly installed on the top of the moving plate 3. An inner stator body 5 is arranged on one side of the bracket 4. A connecting component is arranged between the inner stator body 5 and the bracket 4. One end of the inner stator body 5 is fixedly connected with one side of the bracket 4 through the connecting component. The connecting component includes a connecting disk 19 fixedly installed on one side of the bracket 4. Connecting holes 20 corresponding to the inner stator body 5 are opened on both sides of the connecting disk 19.

[0023] Through the combined use of the electric sliding table 2 and the connecting component, the user can install one side of the inner stator body 5 on the connecting disk 19 through bolts. Then the user can drive the moving plate 3 to move through the electric sliding table 2, and further drive the inner stator body 5 to move through the bracket 4 and the connecting component, so as to draw in and draw out the inner stator body 5.

[0024] Among them, an auxiliary support component for auxiliary support of the inner stator body 5 is arranged at the top of the moving base 1 and below the inner stator body 5. The auxiliary support component includes a fixed seat 6 fixedly installed on the top of the moving base 1. A fixed support seat 7 is fixedly installed on the top of the fixed seat 6. A moving support seat 8 is arranged on one side of the fixed support seat 7. An active component is arranged at the bottom of the moving support seat 8. The bottom of the moving support seat 8 is movably connected with the top of the fixed seat 6 through the active component. A tension spring 9 is fixedly installed between the fixed support seat 7 and the moving support seat 8. A connecting plate 10 is fixedly installed on the surface of a group of moving support seats 8 close to one side of the moving plate 3. The bottom of the connecting plate 10 is fixedly connected with the top of the moving plate 3.

[0025] Through the setting of the auxiliary support component, when the inner stator body 5 is drawn and inserted, the movement of the moving plate 3 will drive the moving support seat 8 to move through the connecting plate 10. By using the moving support seat 8 in cooperation with the fixed support seat 7, it can play an auxiliary supporting role for the bottom of the inner stator body 5, preventing its center of gravity from shifting due to excessive weight, which may lead to unstable overall use of the device. Through the setting of the tension spring 9, when the moving support seat 8 moves, it will pull the tension spring 9. After the inner stator body 5 is drawn out and disassembled, the reaction force generated by the stretching of the tension spring 9 drives the moving support seat 8 to reset.

[0026] It should be noted that an active component is provided at the bottom of the moving support seat 8. The active component includes two sets of fixed slots 11 opened at the top of the fixed seat 6. A slider 12 is slidably connected to the inner cavity of the fixed slot 11. The top of the slider 12 penetrates through the fixed slot 11 and extends to the outside of the fixed slot 11 and is fixedly connected to the bottom of the moving support seat 8. A limiting component is further provided between the surface of the slider 12 and the inner wall of the fixed slot 11. The limiting component includes limiting blocks 13 fixedly installed on both sides of the slider 12. Limiting slots 14 adapted to the limiting blocks 13 are opened on both sides of the inner cavity of the fixed slot 11. The surface of the limiting block 13 is slidably connected to the inner wall of the limiting slot 14.

[0027] Through the setting of the active connection component, when the moving support seat 8 moves, it will drive the slider 12 to slide in the inner cavity of the fixed slot 11, thereby improving the stability of the movement of the moving support seat 8. Through the setting of the limiting component, it can play a limiting role on the slider 12 to prevent the slider 12 from slipping out of the inner cavity of the fixed slot 11. When the slider 12 moves, it will drive the limiting blocks 13 on both sides of it to slide in the inner cavity of the limiting slot 14.

[0028] Furthermore, a rolling component for reducing friction is provided at the top of the moving support seat 8 and the fixed support seat 7. The rolling component includes arc-shaped grooves 15 opened at the top of the fixed support seat 7 and the moving support seat 8. A roller 16 is fixedly installed in the inner cavity of the arc-shaped groove 15. The top of the roller 16 is in rolling connection with the bottom of the inner stator body 5.

[0029] Through the setting of the rolling component, when the relative position between the inner stator body 5 and the fixed support seat 7 and the moving support seat 8 changes, the roller 16 will roll on the bottom of the inner stator body 5 to reduce the friction between the inner stator body 5 and the fixed support seat 7 and the moving support seat 8, preventing the fixed support seat 7 and the moving support seat 8 from scratching the inner stator body 5.

[0030] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A stator extraction device in an exciter, comprising a movable base (1), wherein the four corners of the top of the movable base (1) are each equipped with a lifting assembly, characterized in that: Two groups of electric slides (2) are symmetrically mounted on the top of the mobile base (1); the mobile end of the electric slide (2) is fixedly connected to a mobile plate (3); the top of the mobile plate (3) is fixedly mounted with a bracket (4); an inner stator body (5) is arranged on one side of the bracket (4); a connecting component is arranged between the inner stator body (5) and the bracket (4); one end of the inner stator body (5) is fixedly connected to one side of the bracket (4) via the connecting component; an auxiliary support component for auxiliary support of the inner stator body (5) is arranged on the top of the mobile base (1) and below the inner stator body (5).

2. The stator extraction device in an exciter according to claim 1, characterized in that: The auxiliary support assembly comprises a fixed seat (6) fixedly mounted on the top of the movable base (1); a fixed support seat (7) is fixedly mounted on the top of the fixed seat (6); a movable support seat (8) is arranged on one side of the fixed support seat (7); a movable assembly is arranged on the bottom of the movable support seat (8); the bottom of the movable support seat (8) is movably connected to the top of the fixed seat (6) through the movable assembly; a tension spring (9) is fixedly mounted between the fixed support seat (7) and the movable support seat (8); a connecting plate (10) is fixedly mounted on the surface of a group of the movable support seats (8) close to the side of the movable plate (3); the bottom of the connecting plate (10) is fixedly connected to the top of the movable plate (3); and rolling assemblies for reducing friction are arranged on the tops of the movable support seat (8) and the fixed support seat (7).

3. The stator extraction device in an exciter according to claim 2, characterized in that: The movable component comprises two groups of fixed grooves (11) opened on the top of the fixed seat (6); the inner cavity of the fixed groove (11) is slidably connected with a slider (12); the top of the slider (12) passes through the fixed groove (11) and extends to the outside of the fixed groove (11) and is fixedly connected to the bottom of the movable support seat (8); and a limiting component is also arranged between the surface of the slider (12) and the inner wall of the fixed groove (11).

4. The stator extraction device in an exciter according to claim 3, characterized in that: The limiting assembly comprises limiting blocks (13) fixedly mounted on both sides of the slider (12); limiting grooves (14) matching the limiting blocks (13) are provided on both sides of the inner cavity of the fixing groove (11); and the surface of the limiting block (13) is slidably connected to the inner wall of the limiting groove (14).

5. The stator extraction device in an exciter according to claim 2, characterized in that: The rolling assembly comprises an arc-shaped groove (15) opened on the top of the fixed support seat (7) and the movable support seat (8), a roller (16) is fixedly installed in the inner cavity of the arc-shaped groove (15), and the top of the roller (16) is rollingly connected to the bottom of the inner stator body (5).

6. The stator extraction device in an exciter according to claim 1, characterized in that: The lifting assembly comprises a lifting cylinder (17) fixedly mounted on the four corners of the top of the mobile base (1); the telescopic end of the lifting cylinder (17) penetrates the mobile base (1) and extends to the bottom of the mobile base (1) where a foot (18) is fixedly mounted.

7. The stator extraction device in an exciter according to claim 1, characterized in that: The connection assembly comprises a connection plate (19) fixedly mounted on one side of the bracket (4), and connection holes (20) corresponding to the inner stator body (5) are provided on both sides of the connection plate (19).

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