Auxiliary platform for potting glue at lower end of unit stator

Abstract

The utility model discloses a set stator lower end glue filling auxiliary platform which comprises a bedplate (1), a supporting plate (18) arranged at the top of the bedplate (1), a lifting mechanism arranged at the bottom of the bedplate (1), a gradienter (2) arranged on the bedplate (1), a long-strip-shaped positioning template (3) arranged on the supporting plate (18), the positioning template (3) is made of flexible materials, a plurality of positioning grooves (4) are formed in one side of the positioning template (3) in the width direction, and the positioning grooves (4) are communicated with the gradienter (2). The plurality of positioning grooves (4) are uniformly distributed in the circumferential direction; the lifting mechanism comprises a support plate (5) located below the platen (1) and a motor (6) fixed to the bottom of the platen (1), a screw (7) is arranged at the output end of the motor (6), and a plurality of telescopic rods (8) are arranged at the bottom of the support plate (5). The glue filling device has the advantages of being convenient to operate and capable of reducing the labor intensity of workers and improving the glue filling efficiency and the glue filling quality.

Description

Technical Field

[0001] This utility model belongs to the field of supporting equipment for hydro turbine generator sets, and in particular relates to an auxiliary platform for glue filling at the lower end of the generator stator. Background Technology

[0002] The stator windings of hydroelectric generator units (including conventional hydroelectric and pumped storage units) employ a bar welding process. The stator is laid down in the pit, and a single unit has hundreds of bars evenly distributed circumferentially. The bars consist of inner and outer layers, with the upper and lower ends welded together in pairs using silver-copper solder to form a complete coil. After the bar welding is complete, the lower insulation uses an insulating box potting process. Epoxy resin is injected into the insulating box, and the insulating box is lifted so that the weld head at the lower end of the stator is immersed in it. The lower insulation box potting process typically involves using a support plate to simultaneously lift 12-15 insulating boxes. Three people lift the support plate while another person positions and adjusts the insulating boxes. Once the lifting height is reached, the insulating boxes are adjusted, and the support plate is secured with wooden blocks. The process is allowed to continue for 24 hours for the epoxy resin to solidify before the support plate is removed.

[0003] Due to the narrow space inside the pit, lifting the pallet requires multiple people to maintain its level, making the operation inconvenient. Since wooden blocks are needed to support it after lifting, an adjustment process is required, resulting in prolonged lifting time for workers, causing arm pain and high labor intensity. To ensure insulation effectiveness, the conductor bar needs to be aligned with the center of the insulation box. Currently, the insulation box is moved under the corresponding conductor bar by visual inspection, and each insulation box requires adjustment, making the entire adjustment process cumbersome, reducing glue application efficiency. Furthermore, even after the insulation box has been positioned, it may shift again due to the worker's arm shaking, reducing the glue application quality. Utility Model Content

[0004] The purpose of this invention is to provide an auxiliary platform for glue application at the lower end of the generator stator. This invention has the advantages of convenient operation, reduced labor intensity for workers, improved glue application efficiency, and improved glue application quality.

[0005] The technical solution of this utility model: A glue-filling auxiliary platform at the lower end of the stator of the unit includes a platform, a support plate placed on the top of the platform, a lifting mechanism at the bottom of the platform, a level on the platform, and a long strip-shaped positioning template placed on the support plate. The positioning template is made of flexible material, and multiple positioning grooves are provided on one side of the width of the positioning template. The multiple positioning grooves are evenly distributed in the circumferential direction.

[0006] In the aforementioned auxiliary platform for applying adhesive to the lower end of the unit stator, the positioning template is made of rubber.

[0007] In the aforementioned auxiliary platform for dispensing adhesive at the lower end of the unit stator, the thickness of the positioning template is 5-10mm.

[0008] In the aforementioned auxiliary platform for dispensing adhesive at the lower end of the stator of the unit, the lifting mechanism includes a support plate located below the platform and a motor fixed to the bottom of the platform. The output end of the motor is provided with a screw connecting the support plate, and the bottom of the support plate is provided with multiple telescopic rods; the platform and the support plate are slidably connected.

[0009] In the aforementioned auxiliary platform for glue application at the lower end of the stator of the unit, the output end of the motor is connected to the screw via a universal coupling.

[0010] In the aforementioned auxiliary platform for potting adhesive at the lower end of the unit stator, the telescopic rod includes a guide tube fixed to the support plate, a telescopic shaft is provided inside the guide tube, and a hand-tightening screw for tightening the telescopic shaft is provided on the guide tube.

[0011] In the aforementioned auxiliary platform for applying adhesive to the lower end of the unit stator, the lower end of the telescopic shaft is provided with a support foot, which is screwed to the telescopic shaft.

[0012] In the aforementioned auxiliary platform for potting glue at the lower end of the stator of the unit, the upper end of the telescopic shaft is provided with a blind hole, and a spiral compression spring is provided inside the blind hole. The upper end of the compression spring is connected to a support plate.

[0013] Compared with existing technologies, this utility model features a platform with a lifting mechanism at its bottom, making the platform height adjustable. The tray is placed on the platform, which supports and moves it up and down, eliminating the need for manual lifting, thus simplifying operation and significantly reducing worker fatigue. By placing a positioning template on the tray, the positioning grooves on the template maintain the relative positions of multiple insulation boxes. Only two insulation boxes need to be adjusted to the correct position; the remaining boxes do not require adjustment, improving glue-dispensing efficiency. Since the platform only moves up and down, the insulation boxes remain stationary in the horizontal direction after adjustment, preventing further displacement and maintaining alignment with the wire rod, thus improving glue-dispensing quality. Therefore, this utility model offers advantages such as convenient operation, reduced worker fatigue, increased glue-dispensing efficiency, and improved glue-dispensing quality. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of this utility model.

[0015] Figure 2 This is a top view of the present invention.

[0016] Figure 3 This is a structural diagram of a telescopic rod.

[0017] The labels in the attached diagram are as follows: 1-platform, 2-level, 3-positioning template, 4-positioning groove, 5-support plate, 6-motor, 7-screw, 8-telescopic rod, 10-universal coupling, 11-guide tube, 12-telescopic shaft, 13-hand screw, 14-support foot, 15-blind hole, 16-compression spring, 17-guide post, 18-support plate. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] Example: Auxiliary platform for glue application at the lower end of the unit stator, such as Figure 1 As shown, the system includes a platform 1, a support plate 18 placed on top of the platform 1, with the outer edge of the support plate 18 extending beyond the platform 1. A lifting mechanism is located at the bottom of the platform 1. A bubble level 2 is installed on the front side wall of the platform 1. A long strip-shaped positioning template 3 is provided on the top surface of the platform 1. The positioning template 3 is 5-10mm thick and made of rubber or silicone with a Shore hardness of 30-40. Multiple positioning grooves 4 are provided on one side of the positioning template 3, and these grooves 4 are evenly distributed circumferentially. The distribution of the positioning grooves 4 should be consistent with the distribution of the wire rods at the bottom of the unit.

[0020] The lifting mechanism includes a support plate 5 located below the platform 1 and a motor 6 fixed to the bottom of the platform 1. The output end of the motor 6 is connected to a screw 7 via a universal coupling 10. The screw 7 passes through the middle of the support plate 5 and remains screwed in. Four telescopic rods 8 are located at the bottom of the support plate 5, respectively at the four corners of the support plate 5. The universal coupling 10 allows the screw 7 to rotate smoothly even when there is a certain positional deviation in the installation of the motor 6 on the platform 1, thus ensuring smooth lifting and lowering of the platform 1.

[0021] The telescopic rod 8 includes a guide tube 11 fixed to the support plate 5, a telescopic shaft 12 is provided inside the guide tube 11, and a hand-tightening screw 13 is provided on the guide tube 11 to tighten the telescopic shaft 12. The lower end of the telescopic shaft 12 is provided with a support foot 14, which is screwed to the telescopic shaft 12.

[0022] The upper end of the telescopic shaft 12 is provided with a blind hole 15, and a spiral compression spring 16 is provided inside the blind hole 15. The upper end of the compression spring 16 is connected to the bracket plate 5.

[0023] The bottom of the platform 1 is provided with four guide posts 17, which are located at the four corners of the platform 1. The lower end of the guide post 17 passes through the support plate 5, and the platform 1 is slidably connected to the support plate 5 through the guide post 17.

[0024] Instructions for use: Place the platform below the unit. Adjust the length of the telescopic rod according to the height of the lower end of the wire rod from the ground, ensuring a certain distance between the support plate 18 and the wire rod. This distance should be relatively small, such as about 15-20cm, while still allowing workers to observe whether the wire rod is aligned with the positioning groove 4. To adjust the length of the telescopic rod, loosen the hand screw 13, change the axial position of the telescopic shaft 12 within the guide tube 11, and then tighten the hand screw 13.

[0025] When adjusting the length of the telescopic rod 8, it is necessary to lift the corresponding corner of the support plate 5. At this time, the telescopic shaft 12 provides upward support force to the support plate 5 through the compression spring 16, so that the force required to lift the support plate 5 is smaller, thus reducing the labor intensity of workers.

[0026] The length of the telescopic rod 8 is finely adjusted by rotating the support foot 14 to keep the tray 18 level. Whether the tray is level can be observed using the level indicator 2.

[0027] After applying adhesive, place the insulating box into the positioning groove 4, or place the insulating box into the positioning groove 4 and then apply adhesive. A slight tight fit between the insulating box and the positioning template 3 is preferred, such as an interference fit of 0.05mm.

[0028] Adjust the position of the positioning template 3 so that the insulation box is located below the corresponding bar. Since the relative positions of multiple insulation boxes are already fixed by the positioning template 3, when adjusting the positioning template 3, you only need to ensure that the insulation boxes at both ends of the positioning template 3 are below the corresponding bars, and the positions of the other insulation boxes will be adjusted simultaneously. It is not necessary to adjust the insulation boxes one by one, which makes the adjustment more convenient.

[0029] Start motor 6. Motor 6 drives screw 7 to rotate through universal coupling 10. The rotation of screw 7 drives the support plate 18 to rise until each wire is inserted into the insulation box.

[0030] Support the pallet 18 with multiple wooden blocks to keep it in place. After the glue has initially cured, lower the platform 1, remove the positioning template 3, take a new pallet 18 and place it on the platform 1, then lay the positioning template 3 on top to form a new auxiliary platform. This platform can then be used to apply glue to the next set of multiple wire rods. This process is repeated.

[0031] After 24 hours, the glue inside the insulation box was completely cured, and the wooden blocks and pallets were removed.

Claims

1. A glue-filling auxiliary platform at the lower end of the generator stator, characterized in that: Includes a platform (1), a support plate (18) is placed on the top of the platform (1), a lifting mechanism is provided at the bottom of the platform (1), a level (2) is provided on the platform (1), and a long strip-shaped positioning template (3) is placed on the support plate (18). The positioning template (3) is made of flexible material, and multiple positioning grooves (4) are provided on one side of the width of the positioning template (3). The multiple positioning grooves (4) are evenly distributed in the circumferential direction.

2. The auxiliary platform for applying adhesive to the lower end of the generator stator according to claim 1, characterized in that: The positioning template (3) is made of rubber.

3. The auxiliary platform for applying adhesive to the lower end of the generator stator according to claim 1, characterized in that: The thickness of the positioning template (3) is 5-10mm.

4. The auxiliary platform for applying adhesive to the lower end of the unit stator according to claim 1, characterized in that: The lifting mechanism includes a support plate (5) located below the platform (1) and a motor (6) fixed to the bottom of the platform (1). The output end of the motor (6) is provided with a screw (7) connected to the support plate (5). The bottom of the support plate (5) is provided with multiple telescopic rods (8). The platform (1) and the support plate (5) are slidably connected.

5. The auxiliary platform for applying adhesive to the lower end of the unit stator according to claim 4, characterized in that: The output end of the motor (6) is connected to the screw (7) via a universal coupling (10).

6. The auxiliary platform for applying adhesive to the lower end of the unit stator according to claim 4, characterized in that: The telescopic rod (8) includes a guide tube (11) fixed to the bracket plate (5), a telescopic shaft (12) is provided inside the guide tube (11), and a hand screw (13) for tightening the telescopic shaft (12) is provided on the guide tube (11).

7. The auxiliary platform for applying adhesive to the lower end of the generator stator according to claim 6, characterized in that: The lower end of the telescopic shaft (12) is provided with a support foot (14), which is screwed to the telescopic shaft (12).

8. The auxiliary platform for applying adhesive to the lower end of the unit stator according to claim 6, characterized in that: The upper end of the telescopic shaft (12) is provided with a blind hole (15), and a spiral compression spring (16) is provided in the blind hole (15). The upper end of the compression spring (16) is connected to the bracket plate (5).

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