A flange measuring ladder

Abstract

This utility model relates to the technical field of data testing equipment for wind turbine tower flanges, specifically to a flange measuring ladder. It solves the problem that existing measuring ladders cannot meet usage requirements. The measuring ladder is defined with its height in the Z-direction, length in the X-direction, and width in the Y-direction. It includes a base frame at the bottom and a construction frame at the top. The base frame is trapezoidal in shape, with inclined and symmetrically distributed ladders on both sides in the X-direction and anti-tilt bars inclined outwards from top to bottom on both sides in the Y-direction. The bottom of the base frame has easily movable casters. The construction frame is located at the center of the base frame and includes at least two levels of sub-frames. The width of each sub-frame increases progressively from top to bottom, and the X-direction sides of adjacent sub-frames form a convenient working position for workers. This utility model is applied to the construction measurement of large flange structures.

Description

Technical Field

[0001] This utility model relates to the technical field of data detection equipment for wind turbine tower flanges, specifically to a flange measuring ladder. Background Technology

[0002] Offshore wind turbine flange measuring ladders are mainly used to inspect the flatness, bolt hole position, and geometric tolerances of wind turbine tower flanges, ensuring flange installation accuracy and guaranteeing the stability and safety of wind turbine operation. Their core functions include flatness inspection, bolt hole positioning, and environmental adaptability. For example, the technical solution with authorization announcement number CN 217317709U shows the basic structure of the currently used measuring ladder, specifically an auxiliary device for measuring the flatness of wind turbine tower flanges. It includes a frame mechanism with four rollers fixedly connected to the bottom outer wall, a vertical ladder fixedly connected to one side outer wall, handrails on both sides of one side outer wall, a platform fixedly connected to the top outer wall, a platform guardrail fixedly connected to three sides of the platform's top outer wall, support mechanisms fixedly connected to both sides of the bottom outer wall, and an inclined steel plate on one side outer wall.

[0003] This structure typically requires multiple people to work together to take measurements, and each person usually needs to be at a different height and position. The measuring ladder in this structure cannot meet the current needs of multiple people working together. Utility Model Content

[0004] Therefore, this utility model provides a flange measuring ladder, which solves the problem that existing measuring ladders cannot meet the usage requirements.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0006] A flange measuring ladder is defined with the height direction as Z-axis, the length direction as X-axis, and the width direction as Y-axis. It includes a base frame at the bottom and a construction frame at the top of the base frame. The base frame is a trapezoidal structure with inclined and symmetrically distributed ladders on both sides in the X-axis direction and anti-tilt bars inclined outward from top to bottom on both sides in the Y-axis direction. The bottom of the base frame is equipped with movable rollers for easy movement.

[0007] The construction frame is arranged at the center of the base frame and includes at least two levels of construction sub-frames. The width of each construction sub-frame increases progressively from top to bottom, and the X-direction side ends of two adjacent construction sub-frames form a construction position that facilitates the standing of workers.

[0008] Preferably, the base frame has several inclined or figure-eight shaped reinforcing bars on its Y-direction two-sided surfaces.

[0009] Preferably, the base frame has at least one Z-axis long rod extending from it to the construction frame on both Y-direction surfaces, and the Z-axis long rods are evenly connected to each of the construction sub-frames.

[0010] Preferably, the anti-tilt bar is mounted on the Z-axis long bar.

[0011] Preferably, handrails are provided on both sides of the ladder in the Y direction.

[0012] Preferably, the bottom of the ladder and its two Y-direction sides are provided with structural plates for strengthening the ladder structure.

[0013] Preferably, each of the construction sub-frames is equipped with several short Z-axis rods that increase gripping points.

[0014] By adopting the aforementioned technical solution, the beneficial effects of this utility model are:

[0015] The flange measuring ladder shown in this technical solution features a core structural design consisting of a trapezoidal base frame, multi-level construction frames, and anti-tilting bars. The base frame adopts a trapezoidal structure, utilizing the triangular mechanical principle to distribute the load and reduce the risk of center of gravity shift. The anti-tilting bars on both sides in the Y direction are "inclined outward from top to bottom," forming a reverse supporting moment that effectively resists lateral overturning forces during construction (such as worker position shift or tool load), providing superior structural stability. The construction frames gradually widen, with adjacent sub-frames forming "stepped construction positions" on the X-direction sides. This provides independent standing space for multiple people, meeting the needs of parallel construction, and the width difference between upper and lower sub-frames naturally forms a protective boundary to prevent workers from falling.

[0016] The base frame is equipped with movable rollers at the bottom, which can quickly adjust the position of the measuring ladder to adapt to the measurement needs of different areas of the flange, reduce the time spent on manual handling, and make it easy to move. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the Y-axis measurement structure of an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the X-axis measurement structure of an embodiment of the present invention.

[0019] Figure 3 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0020] Attached reference numerals: 1. Base frame; 11. Ladder; 111. Handrail; 112. Structural plate; 12. Anti-tilt bar; 13. Moving roller; 14. Reinforcing bar; 15. Z-axis long bar; 2. Construction frame; 21. Construction sub-frame; 2a. Construction position; 22. Z-axis short bar. Detailed Implementation

[0021] The following will describe the implementation of this utility model in detail with reference to specific embodiments, so that the process of how this utility model uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Example

[0023] refer to Figure 1 and Figure 2 A flange measuring ladder is defined with the height direction as Z-direction, the length direction as X-direction, and the width direction as Y-direction. It includes a base frame 1 at the bottom and a construction frame 2 at the top of the base frame 1. The base frame 1 is a trapezoidal structure with inclined and symmetrically distributed climbing ladders 11 on both sides of the X-direction and anti-tilting bars 12 inclined outward from top to bottom on both sides of the Y-direction. Handrails 111 are provided on both sides of the climbing ladder 11 in the Y-direction, which have both safety protection and structural reinforcement functions. The handrails 111 provide a gripping point for workers to climb up and down the ladder 11, reducing the risk of slipping. As an inclined connecting member in the X-direction, the handrails 111 can restrain the bars on both sides of the climbing ladder 11 and prevent the climbing ladder 11 from bending and deforming in the X-direction due to long-term use or excessive load.

[0024] In this embodiment, structural plates 112 for reinforcing the structure of the ladder 11 are provided at its bottom and on both sides in the Y direction. The structural plates 112 are as follows: Figure 3 As shown, the structural plates 112 are distributed among the various members; the structural plates 112 are designed to strengthen the structural strength of the bottom of the ladder 11, achieving an upgrade from point connection to surface connection. In traditional ladders 11, the bottom is only connected to the base frame 1 at one end, which is prone to loosening due to local stress concentration.

[0025] The structural plate 112 covers both sides of the bottom Y direction of the ladder 11, increasing the contact area and evenly distributing the load of the ladder 11 to the base frame 1, thereby improving the connection reliability (especially suitable for frequent movement or heavy load scenarios).

[0026] Structurally, the base frame 1 is provided with movable rollers 13 at the bottom for easy movement; depending on the size, the movable rollers 13 need to be provided with at least four at the corners in the X and Y directions and two at the center position to meet the requirements of stable load bearing and movement;

[0027] The construction frame 2 is positioned at the center of the base frame 1 and includes three levels of sub-frames 21. The width of each sub-frame 21 increases progressively from top to bottom, and the X-axis side ends of adjacent sub-frames 21 form a construction position 2a that facilitates worker positioning. Each level of sub-frame 21 is equipped with several Z-axis short rods 22 that provide additional gripping points. These Z-axis short rods 22 serve as vertical gripping points, allowing workers to easily attach safety belts, hooks, and other protective equipment, preventing falls from heights and enhancing safety and ease of operation. The Z-axis short rods 22 are densely arranged around the construction position 2a, allowing for temporary hanging of tools or measuring instruments, reducing hand load and improving construction efficiency. The Z-axis short rods 22 and the sub-frames 21 form a locally reinforced structure, suppressing local deformation of the sub-frames caused by worker positioning deviations.

[0028] The flange measuring ladder shown in this technical solution adopts a core structural design of trapezoidal base frame 1 + multi-level construction frame 2 + anti-tilt bar 12. The base frame 1 adopts a trapezoidal structure, which uses the triangular mechanical principle to distribute the load and reduce the risk of center of gravity shift. The anti-tilt bars 12 on both sides of the Y direction are "inclined outward from top to bottom" to form a reverse support moment, which effectively resists the lateral overturning force during construction (such as worker position shift or tool load), and has super structural stability. The construction frame 2 gradually widens, and the X-direction side ends of adjacent sub-frames form "stepped construction positions 2a", which not only provides independent standing space for multiple people to meet the needs of parallel construction, but also naturally forms a protective boundary through the width difference between the upper and lower sub-frames to prevent workers from falling. The bottom of the base frame 1 is equipped with movable rollers 13, which can quickly adjust the position of the measuring ladder to adapt to the measurement needs of different areas of the flange, reduce the time spent on manual handling, and have convenient mobility.

[0029] In this embodiment, the base frame 1 has several inclined or figure-eight shaped reinforcing rods 14 on its Y-direction side surfaces. Structurally, the reinforcing rods 14 enhance the overall rigidity of the base frame 1 through a triangular reinforcement structure. The inclined reinforcing rods 14 form a stable triangle with the side of the base frame 1, resisting torsional deformation in the Y-direction (width direction). The figure-eight shaped reinforcing rods 14 (e.g., converging at the top and diverging at the bottom) can disperse the concentrated stress at the bottom of the base frame 1, especially when the measuring ladder moves or is subjected to lateral impact, preventing local structural cracking.

[0030] In this embodiment, the base frame 1 has two Z-axis long rods 15 extending from its Y-axis sides to the construction frame 2, and each of the construction sub-frames 21 is evenly connected to the Z-axis long rods 15. There are two Z-axis long rods 15 on each side, realizing rigid linkage between the base and the construction frame 2. The Z-axis long rods 15 serve as the longitudinal (Z-direction) main load-bearing components, directly transferring the load of the construction frame 2 (such as the weight of workers and tools) to the base frame 1, avoiding swaying of the construction frame 2 due to its height. The construction frame 2 is connected to the base frame 1 at multiple points through multiple Z-axis long rods 15, forming a frame structure. Compared with the traditional single-column support structure, the overall bending and torsional resistance is significantly improved.

[0031] Specifically, the anti-tilt bar 12 is arranged on the Z-axis long bar 15. The anti-tilt bar 12, arranged on the Z-axis long bar 15, produces a dual reinforcement effect. The anti-tilt bar 12 is fixed by the Z-axis long bar 15, and the anti-tilt effect can be enhanced by the longitudinal rigidity of the long bar. When the anti-tilt bar 12 is subjected to lateral force, the long bar provides reverse support. Due to the transverse connection of the anti-tilt bar 12, the Z-axis long bar 15 forms a "longitudinal-transverse" intersecting grid structure, forming a truss-like structure principle, which further suppresses the deformation at the connection between the base frame 1 and the construction frame 2.

[0032] This technical solution establishes the core advantages of the surveying ladder—"stability, mobility, and multi-person construction"—through the coordinated design of a trapezoidal base, multi-level construction frame, and anti-tilting system. Structurally, it improves the overall reliability and practicality of the technology by progressively enhancing structural strength, connection optimization, and safety protection, forming a complete high-altitude surveying solution.

[0033] Although the present invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the present invention without departing from the spirit and scope of the present invention as defined in the appended claims, and all such changes shall be within the scope of protection of the present invention.

Claims

1. A flange measuring ladder, defining the height direction as the Z-direction, the length direction as the X-direction, and the width direction as the Y-direction, characterized in that: It includes a base frame (1) at the bottom and a construction frame (2) at the top of the base frame (1). The base frame (1) is a trapezoidal structure with inclined and symmetrically distributed ladders (11) on both sides in the X direction and anti-tilt bars (12) that are inclined outward from top to bottom on both sides in the Y direction. The base frame (1) is equipped with movable rollers (13) at the bottom for easy movement. The construction frame (2) is arranged at the center of the base frame (1), and includes at least two levels of construction sub-frames (21). The width of each construction sub-frame (21) increases from top to bottom, and the X-direction side ends of two adjacent construction sub-frames (21) form a construction position (2a) that facilitates the standing of workers.

2. A flange measuring ladder according to claim 1, characterized in that: The base frame (1) has several inclined or figure-eight shaped reinforcing rods (14) on its Y-direction two-sided surfaces.

3. A flange measuring ladder according to claim 1, characterized in that: The base frame (1) has at least one Z-axis long rod (15) extending from it to the construction frame (2) on both sides of the Y direction, and each of the construction sub-frames (21) is evenly connected to the Z-axis long rod (15).

4. A flange measuring ladder according to claim 3, characterized in that: The anti-tilt bar (12) is mounted on the Z-axis long bar (15).

5. A flange measuring ladder according to any one of claims 1-4, characterized in that: The ladder (11) is provided with handrails (111) on both sides in the Y direction.

6. A flange measuring ladder according to any one of claims 1-4, characterized in that: The bottom of the ladder (11) and on both sides of it in the Y direction are provided with structural plates (112) for reinforcing the structure of the ladder (11).

7. A flange measuring ladder according to any one of claims 1-4, characterized in that: Each of the construction sub-frames (21) is equipped with several Z-axis short rods (22) to increase gripping points.

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