A large generator assembly platform

Abstract

The utility model provides a large -scale generator assembly platform, including platform main part, and platform main part includes first platform and second platform, and first platform and second platform horizontal welding connection. First platform includes first skeleton, and first skeleton top surface is connected with first flat plate, and first skeleton bottom surface is connected with a group of first cushion block. Second platform includes second skeleton, and second skeleton top surface is connected with second flat plate, and first flat plate top surface and second flat plate top surface are located same horizontal plane, and second skeleton bottom surface and a group of first cushion block bottom surface are located same horizontal plane. First skeleton outer periphery is equipped with a group of hanging ladder mechanism. The utility model prolongs platform length, reduces platform manufacturing difficulty and manufacturing cost simultaneously to satisfy large -scale generator stator frame welding assembly demand.

Description

Technical Field

[0001] This utility model belongs to the field of generator technology, specifically relating to a large generator assembly platform. Background Technology

[0002] The stator frame is a core component of large steam turbine generators, playing a crucial role in supporting the stator core, windings, and cooling system, and transmitting mechanical loads and electromagnetic forces. Due to its massive size, the stator frame is typically assembled by welding sections together. However, this segmented assembly makes it difficult to guarantee the concentricity and perpendicularity accuracy of each ring plate, easily leading to dimensional deviations due to welding deformation. This negatively impacts the quality of core stacking and winding assembly. When the stator frame is welded in two separate parts (upper and lower), existing welding platforms are often limited in size and cannot meet the welding requirements of its enormous volume.

[0003] Therefore, the above problems urgently need to be solved. Utility Model Content

[0004] Purpose of the utility model: In order to overcome the above shortcomings, this utility model provides a large generator assembly platform that extends the length of the large generator assembly platform, reduces the platform manufacturing difficulty and manufacturing cost, so as to meet the welding and assembly requirements of the stator frame of the large generator.

[0005] Technical Solution: To achieve the above objectives, this utility model provides a large generator assembly platform, including a platform body comprising a first platform and a second platform, which are horizontally welded together. The first platform includes a first frame, with a first flat plate connected to the top surface of the first frame and a set of first pads connected to the bottom surface of the first frame. The second platform includes a second frame, with a second flat plate connected to the top surface of the second frame. The top surfaces of the first and second flat plates are on the same horizontal plane, and the bottom surfaces of the second frame and the set of first pads are on the same horizontal plane. A set of lifting mechanisms is provided around the outer periphery of the first frame. For large or super-large generator bases, they are usually divided into several sections along the axis and spliced ​​together again during installation. This assembly method allows each section to be assembled independently, resulting in high production efficiency and low production difficulty. However, during assembly, each section needs to be spliced ​​together once, which is complex and requires control of the alignment of each section, leading to cumulative errors and affecting assembly accuracy. Dividing the generator stator base into upper and lower parts can ensure the alignment and concentricity of the base and improve assembly accuracy. However, the length of existing large generator assembly platforms cannot meet welding requirements. Therefore, this utility model welds the first platform and the second platform together, extending the length of the first platform while reducing the manufacturing difficulty and cost, to meet the welding and assembly requirements of large generator stator frames. Furthermore, a lifting mechanism is provided to facilitate lifting and rotating welding. Using the first pad as a support reduces torque caused by minor undulations or slopes on the factory floor. The first pad, acting as a support point, allows for height adjustment using wedge-shaped shims, ensuring the top surfaces of the first and second plates are on the same horizontal plane, preventing platform deformation, ensuring welding quality, and preventing stator frame welding deformation.

[0006] Furthermore, in the aforementioned large generator assembly platform, the first frame includes a set of horizontal beams and a set of vertical beams. The vertical beams are connected to both ends of the horizontal beams, and a support beam connects the two horizontal beams. The horizontal beams, vertical beams, and support beams are connected in a grid pattern. The horizontal beams, vertical beams, and support beams are all made of H-beams, and the grid-like connection of the horizontal beams, vertical beams, and support beams ensures that the first platform structure is stable and the stress is evenly distributed.

[0007] Furthermore, in the aforementioned large generator assembly platform, the crossbeam near the second platform end is connected to two vertical beams, which are perpendicular to the crossbeam. A set of support beams connects the two vertical beams, parallel to the vertical beams and spaced apart. The placement of two vertical beams and a set of support beams near the second platform end increases the mechanical strength of the first platform near the second platform, thereby improving the overall structural strength of the platform.

[0008] Furthermore, in the aforementioned large generator assembly platform, a set of through slots is provided at each end of the first plate. The sides of the through slots are arranged along the outer periphery of the horizontal beams, vertical beams, and support beams. Support ribs are connected to the opposite sides of the horizontal beams, and support plates are provided on the top of the support ribs. The top surface of the support plates and the top surface of the first plate are on the same horizontal plane. The through slots are arranged along the horizontal beams, vertical beams, and support beams, which can reduce the weight of the platform itself without reducing the rigidity of the platform, reduce hoisting costs, and also provide operating space for the welding torch.

[0009] Furthermore, in the aforementioned large generator assembly platform, the second frame includes vertical plates parallel to and spaced apart from the vertical beams. Stiffeners connect the two vertical plates, and the vertical plates and stiffeners are vertically aligned and connected in a grid pattern. The second frame, formed by the vertical plates and stiffeners, creates a vertical grid structure, resulting in a simple structure, low weight, and reduced manufacturing costs.

[0010] Furthermore, the aforementioned large generator assembly platform has six lifting mechanisms. Two lifting mechanisms are connected to the end of the first frame furthest from the second platform, with these two mechanisms positioned on either side of the first frame. Four lifting mechanisms are connected to the end of the first frame closer to the second platform, with these four mechanisms arranged in groups of two on either side of the first frame. The placement of four lifting mechanisms closer to the second platform, matching the lifting center, can support the need for tilting.

[0011] Furthermore, in the aforementioned large generator assembly platform, the lifting mechanism includes a lifting base and a limiting plate. The lifting base is cylindrical, with one end welded to the side of the first frame. A limiting plate, which is disc-shaped, is welded to the side of the lifting base away from the first frame. The circular lifting base can meet the requirements for lifting and turning, and the limiting plate prevents the lifting cable from slipping.

[0012] As can be seen from the above technical solution, this utility model has the following beneficial effects: The large generator assembly platform of this utility model welds the first platform and the second platform, extending the length of the first platform while reducing the platform's manufacturing difficulty and cost, thus meeting the welding and assembly requirements of the large generator stator frame. Furthermore, a set of lifting mechanisms provides convenience for lifting and rotating welding. Using the first pad block as a support reduces torque caused by minor undulations or slopes on the factory floor. As a support point, the first pad block allows for height adjustment using wedge-shaped shims, ensuring that the top surfaces of the first and second plates are on the same horizontal plane, preventing platform deformation, ensuring welding quality, and preventing stator frame welding deformation. Two vertical beams and a set of support beams are set near one end of the second platform, improving the mechanical strength of the first platform near the second platform, thereby increasing the overall structural strength of the platform. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the large generator assembly platform of this utility model;

[0014] Figure 2 This is a bottom view of the large generator assembly platform of this utility model;

[0015] Figure 3 for Figure 1 A magnified view of a portion of the image.

[0016] In the diagram: 1. Platform body; 11. First platform; 111. First frame; 1111. Horizontal beam; 1112. Vertical beam; 1121. Through groove; 1211. Vertical plate; 1212. Rib plate; 1113. Support beam; 1115. Support rib; 1116. Support plate; 112. First flat plate; 113. First pad block; 12. Second platform; 121. Second frame; 122. Second flat plate; 13. Lifting mechanism; 131. Lifting seat; 132. Limiting plate. Detailed Implementation

[0017] Example 1

[0018] like Figure 1-2 The large generator assembly platform shown includes a platform body 1, which comprises a first platform 11 and a second platform 12, which are horizontally welded together. The first platform 11 includes a first frame 111, with a first flat plate 112 connected to its top surface and a set of first pads 113 connected to its bottom surface. The second platform 12 includes a second frame 121, with a second flat plate 122 connected to its top surface. The top surfaces of the first and second flat plates 112 are on the same horizontal plane, as are the bottom surfaces of the second frame 121 and the first pads 113. A set of lifting mechanisms 13 is provided around the outer periphery of the first frame 111.

[0019] like Figure 2 The large generator assembly platform shown has a first frame 111 comprising a set of horizontal beams 1111 and a set of vertical beams 1112. The vertical beams 1112 are connected to both ends of the horizontal beams 1111, and a support beam 1113 connects the two horizontal beams 1111. The horizontal beams 1111, vertical beams 1112, and support beams 1113 are connected in a grid pattern. The horizontal beams 1111, vertical beams 1112, and support beams 1113 are all H-beams.

[0020] In this embodiment, the crossbeam 1111 is connected to two vertical beams 1112 at one end near the second platform 12. The vertical beams 1112 are set perpendicular to the crossbeam 1111. A set of support beams 1113 is connected between the two vertical beams 1112. The set of support beams 1113 is parallel to the vertical beams 1112 and is set at intervals.

[0021] In this embodiment, a set of through slots 1121 are respectively provided at both ends of the first plate 112. The through slots 1121 are arranged along the outer periphery of the horizontal beam 1111, the vertical beam 1112, and the support beam 1113. Support ribs 1115 are respectively connected to the opposite sides of the horizontal beam 1111. A support plate 1116 is provided on the top of the support rib 1115. The top surface of the support plate 1116 and the top surface of the first plate 112 are on the same horizontal plane. The through slots 1121 are arranged along the horizontal beam 1111, the vertical beam 1112, and the support beam 1113. Without reducing the rigidity of the platform, the weight of the platform itself can be reduced, the hoisting cost can be reduced, and the operating space for the welding torch can also be provided.

[0022] In this embodiment, the second frame 121 includes vertical plates 1211, which are parallel to and spaced apart from the vertical beams 1112. Stiffeners 1212 connect the two vertical plates 1211. The vertical plates 1211 and stiffeners 1212 are vertically arranged and connected in a grid pattern. The vertical plates 1211 and stiffeners 1212 are both made of steel plates.

[0023] In this embodiment, there are 6 hoisting mechanisms 13. Two hoisting mechanisms 13 are connected to the end of the first frame 111 away from the second platform 12. The two hoisting mechanisms 13 are respectively located on both sides of the first frame 111. Four hoisting mechanisms 13 are connected to the end of the first frame 111 closer to the second platform 12. The four hoisting mechanisms 13 are arranged in groups of two on both sides of the first frame 111.

[0024] like Figure 3 The large generator assembly platform shown includes a lifting mechanism 13, which includes a lifting seat 131 and a limiting plate 132. The lifting seat 131 is cylindrical, and one end of the lifting seat 131 is welded to the side of the first frame 111. The limiting plate 132 is welded to the side of the lifting seat 131 away from the first frame 111, and the limiting plate 132 is disc-shaped.

[0025] The installation process of this utility model includes: firstly, the horizontal beam 1111, vertical beam 1112, and support beam 1113 are welded together in a grid pattern to form a first frame 111. A first pad 113 is welded to the bottom surface of the first frame 111, and a first flat plate 112 is welded to its top surface. A through groove 1121 is cut into the first flat plate 112, and a lifting mechanism 13 is welded on. Then, the vertical plate 1211 and stiffening plate 1212 are welded together in a grid pattern to form a second frame 121. A second flat plate 122 is welded to the top surface of the second frame 121, and a through groove is cut along the second flat plate 122. The first platform 11 and the second platform 12 are then welded together. After welding, the first platform 11 and the second platform 12 are machined on both sides using a large gantry milling machine to ensure that the first platform 11 and the second platform 12 are on the same horizontal plane. The processed platform body 1 is hoisted into the production workshop. Wedge-shaped shims are used to support the underside of the first platform 11 and the second platform 12. The height is adjusted to ensure that the first platform 11 and the second platform 12 are on the same horizontal plane. The platform is then fixed and awaits the welding of the generator stator frame.

[0026] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A large generator assembly platform, characterized in that: The system includes a platform body (1), which includes a first platform (11) and a second platform (12), which are welded together. The first platform (11) includes a first frame (111), the top surface of which is connected to a first plate (112), and the bottom surface of which is connected to a set of first pads (113). The second platform (12) includes a second frame (121), the top surface of which is connected to a second plate (122), the top surface of which is on the same horizontal plane, and the bottom surface of which is on the same horizontal plane. A set of hanging mechanisms (13) is provided on the outer periphery of the first frame (111).

2. The large generator assembly platform according to claim 1, characterized in that: The first frame (111) includes a set of horizontal beams (1111) and a set of vertical beams (1112). The vertical beams (1112) are connected to both ends of the horizontal beams (1111). A support beam (1113) is connected between the two horizontal beams (1111). The horizontal beams (1111), vertical beams (1112) and support beams (1113) are connected in a grid pattern.

3. The large generator assembly platform according to claim 2, characterized in that: The crossbeam (1111) is connected to two vertical beams (1112) at one end near the second platform (12). The vertical beams (1112) are set perpendicular to the crossbeam (1111). A set of support beams (1113) is connected between the two vertical beams (1112). The set of support beams (1113) is parallel to the vertical beams (1112) and is set at intervals.

4. The large generator assembly platform according to claim 2, characterized in that: The first plate (112) has a set of through grooves (1121) at both ends. The through grooves (1121) are arranged along the outer periphery of the crossbeam (1111), the vertical beam (1112) and the support beam (1113). The crossbeam (1111) is connected to the opposite side of the crossbeam (1115). The top of the support rib (1115) is connected to the support plate (1116). The top surface of the support plate (1116) and the top surface of the first plate (112) are on the same horizontal plane.

5. The large generator assembly platform according to claim 2, characterized in that: The second frame (121) includes vertical plates (1211), which are parallel to the vertical beams (1112) and spaced apart. A stiffening plate (1212) connects the two vertical plates (1211). The vertical plates (1211) and the stiffening plates (1212) are respectively vertically arranged and connected in a grid pattern.

6. The large generator assembly platform according to claim 1, characterized in that: There are 6 hoisting mechanisms (13). Two hoisting mechanisms (13) are connected to the end of the first frame (111) away from the second platform (12). The two hoisting mechanisms (13) are respectively located on both sides of the first frame (111). Four hoisting mechanisms (13) are connected to the end of the first frame (111) close to the second platform (12). The four hoisting mechanisms (13) are arranged in groups of two on both sides of the first frame (111).

7. The large generator assembly platform according to claim 1, characterized in that: The hoisting mechanism (13) includes a hoisting seat (131) and a limiting plate (132). The hoisting seat (131) is cylindrical. One end of the hoisting seat (131) is welded to the side of the first frame (111). The limiting plate (132) is welded to the side of the hoisting seat (131) away from the first frame (111). The limiting plate (132) is disc-shaped.

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