Prefabricated welding positioning tool for wind power single-pile airtight platform

Abstract

The utility model relates to a wind power single pile airtight platform prefabrication welding positioning tool which comprises a platform plate, the platform plate is rotationally installed on a base through a rotating shaft, a left end limiting piece is arranged at the left end of the platform plate, a right end limiting piece is arranged at the right end of the platform plate, and an inner ring plate is fixedly arranged between the left end limiting piece and the right end limiting piece. A supporting plate is welded to the platform plate, and the toggle plate shape-preserving annular plate is installed at the upper end of the supporting plate. By means of the template design, scribing-free rapid positioning of the toggle plate is achieved, meanwhile, pre-rigid stress is input into a workpiece, a pre-welding preheating prestress method is matched, and size deformation of the inner ring plate and the toggle plate in the welding process of the toggle plate is effectively controlled.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, and in particular to a prefabricated welding positioning tooling for a wind power monopile airtight platform. Background Technology

[0002] Offshore wind turbine monopiles offer advantages such as high wind speeds, distance from the coastline, and immunity to noise pollution. Compared to traditional offshore wind turbine monopiles that require a transition section, the new monopil design eliminates the transition section by incorporating an inner ring plate structure within the monopil to support an airtight platform.

[0003] The inner ring plate structure of the wind turbine monopile airtight platform presents the following construction challenges during prefabrication: the inner ring plate structure has numerous and densely packed reinforcing elbow plates, and the positioning of the elbow plates involves a large amount of circular marking and is difficult; the reinforcing elbow plates require a large amount of welding, and the welding space is narrow and the welding angle is poor, which makes it difficult to ensure the workpiece size and welding quality. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a prefabricated welding positioning fixture for a wind power monopile airtight platform. Through template design, it enables rapid positioning of the elbow plate without marking, while simultaneously inputting pre-rigid stress into the workpiece. Combined with the preheating and prestressing method before welding, it effectively controls the dimensional deformation of the inner ring plate and the elbow plate during the elbow plate welding process.

[0005] This utility model is achieved through the following technical solution:

[0006] A prefabricated welding positioning fixture for a wind turbine monopile airtight platform includes a platform plate, which is rotatably mounted on a base via a rotating shaft. A left end limiter is provided at the left end of the platform plate, and a right end limiter is provided at the right end of the platform plate. An inner ring plate is fixed between the left end limiter and the right end limiter. A support plate is welded onto the platform plate, and an elbow plate conformal ring plate is installed on the upper end of the support plate.

[0007] Furthermore, a stop bar is provided between the left end limiting member and the inner ring plate, and the left side of the inner ring plate is closely abutted against the left end limiting member through the stop bar.

[0008] Furthermore, a wedge is provided between the right end limiting member and the inner ring plate, and the right side of the inner ring plate is tightly pressed against the right end limiting member by the wedge.

[0009] Furthermore, the two arc-shaped edges of the inner ring plate are fixed to the platform plate by angle steel.

[0010] Furthermore, several reinforcing strips are welded and fixed to the bottom of the platform plate.

[0011] Furthermore, a lifting lug is welded and fixed to the upper end face of the elbow plate conformal ring plate.

[0012] In summary, the beneficial technical effects of this utility model are as follows: through template design, the elbow plate can be quickly positioned without scribing, and at the same time, pre-rigid stress is input to the workpiece. Combined with the preheating and prestressing method before welding, the dimensional deformation of the inner ring plate and the elbow plate during the elbow plate welding process can be effectively controlled. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model. Figure 2 ;

[0015] Figure 3 This is a structural diagram of the components on the platform board;

[0016] Figure 4 This is a schematic diagram of the connection structure between the support plate and the elbow plate conformal ring plate.

[0017] In the diagram, 1. Platform plate; 2. Base; 3. Left end limiting piece; 4. Right end limiting piece; 5. Inner ring plate; 6. Support plate; 7. Elbow plate conformal ring plate; 8. Stop bar; 9. Wedge iron; 10. Angle steel; 11. Reinforcing strip; 12. Lifting lug. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Reference Figures 1-4 A prefabricated welding positioning fixture for a wind power monopile airtight platform includes a base 2 and a platform plate 1. The base 2 includes a bottom plate, an I-beam, a support frame, and a rotating shaft. The I-beam is fixed on the upper surface of the bottom plate. The support frame is set between the side of the I-beam and the bottom plate, and its two ends are fixed to the I-beam and the bottom plate respectively, thereby providing stable support for the I-beam. The rotating shaft is rotatably installed on the top of the two I-beams. The platform plate 1 is rotatably installed on the base 2 via the rotating shaft.

[0020] Several reinforcing strips 11 are welded and fixed to the bottom of the platform plate 1 to further reinforce the platform plate 1.

[0021] A left end limiting member 3 is provided on the left end of the end face of the platform plate 1, and a right end limiting member 4 is provided on the right end. An inner ring plate 5 is fixed between the left end limiting member 3 and the right end limiting member 4. A stop bar 8 is provided between the left end limiting member 3 and the inner ring plate 5. The left side of the inner ring plate 5 is tightly against the left end limiting member 3 through the stop bar 8. A wedge 9 is provided between the right end limiting member 4 and the inner ring plate 5. The right side of the inner ring plate 5 is tightly against the right end limiting member 4 through the wedge 9. The position of the inner ring plate 5 is limited by the left end limiting member 3 and the right end limiting member 4 to prevent the inner ring plate 5 from shifting during welding.

[0022] The two arc-shaped edges of the inner ring plate 5 are fixed to the platform plate 1 by angle steel 10 to further prevent the inner ring plate 5 from shifting. The platform plate 1 is provided with a support plate 6, the side of which is in close contact with the angle steel 10, and the bottom is welded and fixed to the platform plate 1. The elbow plate conformal ring plate 7 is installed on the upper end of the support plate 6, which allows for quick positioning and installation of the elbow plate. The elbow plate conformal ring plate 7 is installed on the upper surface of the support plate 6 and has a lifting lug 12 welded and fixed thereon for easy installation. The implementation principle of this embodiment is as follows: When using the prefabricated welding positioning fixture for the support ring structure of the wind power monopile airtight platform, first place the base plate in a suitable position, weld the I-beam to the support frame and the base plate, weld the reinforcing strip 11 to the lower end of the platform plate 1 and add a rotating shaft, aligning the rotating shaft with the top of the I-beam, install the left end limiting piece 3 and the right end limiting piece 4 on the upper end of the platform plate 1, and fix the position of the inner ring plate 5 with the stop strip 8 and wedge 9 to prevent the inner ring plate 5 from shifting, then weld the support plate 6 onto the platform plate 1, and install the elbow plate conformal ring plate 7 on the upper end of the support plate 6. At this time, the elbow plate can be quickly positioned and installed. The lifting lug 12 is welded onto the elbow plate conformal ring plate 7 to achieve the purpose of lifting. The angle steel 10 can be used on site according to the stability of the inner ring plate 5. Through template design, the elbow plate can be quickly positioned without marking, and at the same time, pre-rigid stress is input to the workpiece. Combined with the preheating and prestressing method before welding, the dimensional deformation of the inner ring plate 5 and the elbow plate during the elbow plate welding process is effectively controlled.

Claims

1. A prefabricated welding positioning fixture for a wind turbine monopile airtight platform, characterized in that: The utility model provides a platform board (1) is rotatedly installed on the base (2) through the pivot, is provided with the left end part limiting piece (3) in the left end of platform board (1), is provided with the right end part limiting piece (4) in the right end of platform board (1), is fixed with the inner ring plate (5) between left end part limiting piece (3) and right end part limiting piece (4), is welded with the support plate (6) on platform board (1), elbow plate shape ring plate (7) is installed in the upper end of support plate (6).

2. The prefabricated welding positioning tool for a wind power single-pile air-tight platform according to claim 1, characterized in that: The left end part limiting piece (3) and the inner ring plate (5) are provided with a blocking strip (8) between them, and the left side of the inner ring plate (5) is tightly against the left end part limiting piece (3) through the blocking strip (8).

3. The prefabricated welding positioning tool for a wind power single-pile air-tight platform according to claim 2, characterized in that: The right end part limiting piece (4) and the inner ring plate (5) are provided with a wedge (9) between them, and the right side of the inner ring plate (5) is tightly against the right end part limiting piece (4) through the wedge (9).

4. The prefabricated welding positioning tool for a wind power single-pile air-tight platform according to claim 1, characterized in that: The two arc-shaped edges of the inner ring plate (5) are fixed on the platform board (1) through angle steels (10).

5. The prefabricated welding positioning tool for a wind power single-pile air-tight platform according to claim 1, characterized in that: The bottom of the platform board (1) is welded with several reinforcing plate strips (11).

6. The prefabricated welding positioning tool for a wind power single-pile air-tight platform according to claim 1, characterized in that: The upper end surface of the elbow plate shape ring plate (7) is welded with a lifting lug (12).

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