Portable manned mobile detection platform and operation method thereof

Abstract

The invention discloses a portable manned mobile detection platform, and relates to the field of industrial flaw detection auxiliary equipment. The platform comprises a main frame body, a man-carrying platform and a walking mechanism, wherein the man-carrying platform and the walking mechanism are respectively arranged on two sides of the main frame body. A rack is arranged on the main frame body, and the manned platform is meshed with the rack through a gear and driven by a motor and a speed reduction system to move up and down. The walking mechanism drives the main frame body through the driving wheel and the driving system to achieve horizontal movement, and the horizontal cross beam and the manned platform are both of telescopic structures and can be matched with the auxiliary wheels to adapt to different detection scenes. Scaffolds do not need to be frequently erected, the operation position and posture can be flexibly adjusted, labor and material consumption is reduced, the detection efficiency and safety are improved, and the method is particularly suitable for high-altitude and large-scale structure detection in the fields of ships, war industry and the like.

Description

Technical Field

[0001] This invention relates to the field of industrial flaw detection auxiliary equipment, and more specifically, to a portable manned mobile inspection platform and its operating method. Background Technology

[0002] In many industrial sectors, such as shipbuilding, military equipment production, and chemical facility construction, welds serve as critical nodes connecting structures, and the mechanical environment they bear is often extremely complex. These welds not only have to withstand basic stresses such as tension, compression, and shear over long periods, but may also face thermal stress caused by temperature changes, stress corrosion caused by media corrosion, and the combined effects of dynamic loads such as vibration and impact. Therefore, almost stringent requirements are placed on the quality indicators of welds, such as strength, sealing performance, and fatigue life. Any minor defect can become a potential safety hazard, or even lead to catastrophic consequences.

[0003] Taking underwater products, such as the T-ribs of submarines and deep-sea probes, as an example, these components are considered the "skeleton" of underwater equipment, and their quality directly affects the structural safety and service life of the equipment. The web thickness of the T-ribs is usually only a few millimeters, yet while ensuring lightweight construction, they must support a structural span of tens of meters and directly withstand various stress fluctuations transmitted from the ship's hull, such as wave impacts and water pressure changes. If defects such as incomplete fusion or cracks exist in the welds, they are highly likely to fracture at the defect points under long-term alternating stress, with unimaginable consequences. Therefore, non-destructive testing of the T-rib welds must achieve extremely high precision and coverage.

[0004] However, the current inspection work for such large components faces many practical difficulties. The total number of ribs in an underwater product often reaches nearly a hundred. During the segmented erection stage, the traditional inspection method requires the construction of scaffolding layer by layer around the ribs—from the foundation ground to a height of several meters or even more than ten meters, steel pipe supports are built layer by layer and treads are laid. The whole process not only consumes a lot of steel, fasteners and other materials, but also requires the coordinated work of multiple trades such as carpenters and scaffolders. It takes at least two or three days, and sometimes as long as a week, to complete the scaffolding construction for one inspection area.

[0005] The drawbacks of this model are obvious: on the one hand, scaffolding occupies a large amount of production space for a long time, causing other processes, such as component hoisting, welding, and painting, to be forced to stop or be rerouted, which seriously restricts the overall production progress; on the other hand, the erection and dismantling of scaffolding requires repeated investment of manpower, and the transportation and storage of materials also occupy additional on-site resources, making the time and economic costs of inspection work high.

[0006] More importantly, the scaffolding height is fixed, while the welds to be inspected may be located at any height. When the inspection area does not match the scaffolding height, inspectors are forced to work in awkward postures such as bending over, squatting, tiptoeing, or even crawling. Maintaining abnormal postures for extended periods not only accelerates physical exertion and increases fatigue, but also affects the stability of the inspection operation—for example, even slight tremors when holding the inspection probe can cause signal distortion, leading to missed or false detections. For rib welds that are tens of meters long, any oversight could create a safety hazard, and subsequent rework and re-inspection would further increase costs and delay the project.

[0007] Furthermore, gaps of tens of centimeters often exist between scaffolding and structural components. Inspectors must frequently cross these gaps during movement, and the psychological pressure of working at height can increase the risk of falls and other accidents, posing a threat to personnel safety. The combination of these problems makes traditional inspection methods insufficient to meet the demands of modern industry for efficient, accurate, and safe inspections. Summary of the Invention

[0008] The purpose of this invention is to provide a portable manned mobile inspection platform that enables inspectors to move flexibly in both horizontal and vertical directions without the need for scaffolding, thereby improving inspection efficiency and safety.

[0009] To achieve the above objectives, the present invention provides a portable manned mobile detection platform, characterized in that it includes a main frame 1, a manned platform 6, and a walking mechanism; the manned platform 6 and the walking mechanism are respectively installed on both sides of the main frame 1; the main frame 1 is used to connect and support the manned platform 6 and the walking mechanism; the manned platform 6 achieves vertical displacement on the main frame 1 through a transmission structure; the walking mechanism drives the main frame 1 to move horizontally through drive wheels.

[0010] Furthermore, a rack 2 is installed on the main frame 1, and a drive gear 4 and a driven gear 5 that mesh with the rack 2 are provided at one end of the manned platform 6 near the main frame 1. Through the meshing transmission between the drive gear 4 and the driven gear 5 and the rack 2, the manned platform 6 can move in the vertical direction.

[0011] Furthermore, the drive gear 4 is connected to a drive assembly, which includes a first micro motor 8 and a first reducer 7; the output end of the first micro motor 8 is connected to the first reducer 7, and the output end of the first reducer 7 is connected to the drive gear 4, for driving the drive gear 4 to rotate.

[0012] Furthermore, the manned platform 6 is a retractable structure, including a fixed section and a telescopic section; the fixed section is hollow inside, and the telescopic section is slidably inserted into the hollow part of the fixed section; a locking device is provided between the fixed section and the telescopic section to lock the telescopic length of the telescopic section; at least one auxiliary facility among guardrails, seats or shelves can be selectively installed on the manned platform 6.

[0013] Furthermore, the walking mechanism includes a horizontal beam, a driving wheel 10, and a driven wheel 11; one end of the horizontal beam is connected to the main frame 1, and the driving wheel 10 and the driven wheel 11 are respectively installed on the side of the horizontal beam close to the main frame 1; a walking drive assembly is provided on the horizontal beam, and the walking drive assembly includes a second micro motor 18, a second reducer 17, and a transmission 12, which are used to drive the driving wheel 10 to rotate so as to drive the main frame 1 to move horizontally.

[0014] Furthermore, the horizontal beam is a telescopic structure, including a fixed beam and a telescopic beam; the telescopic beam is slidably connected to the fixed beam, and a locking device is provided between the two to lock the telescopic beam's telescopic length to accommodate different specifications of the inspected structure.

[0015] Furthermore, the vertical beams of the main frame 1 and the vertical beams of the traveling mechanism are each provided with a number of driven wheels 11; the driven wheels 11 are detachable structures, used to stabilize the platform on the inspected structure and assist the platform in moving; the rack 2 is provided with limiting devices 3 at both ends; the limiting devices 3 are used to limit the movement range of the driving gear 4 and the driven gear 5, and prevent the driving gear 4 and the driven gear 5 from dislodging from the rack 2.

[0016] Furthermore, it also includes a connecting device 13; the connecting device 13 is a detachable structure used to connect multiple main frame bodies 1 in the vertical direction to expand the vertical movement range of the manned platform 6. The auxiliary facilities are connected to the manned platform 6 through modular connectors; the modular connectors include bolt assemblies or snap-fit ​​structures, so that the auxiliary facilities can be quickly disassembled or installed.

[0017] The present invention further provides an operating method for the above-mentioned portable manned mobile detection platform, characterized by comprising the following steps: S1. Based on the position of the T-rib 14 to be tested on the shell ring wall plate 15, select a suitable T-rib 16 for installation and suspend the manned mobile testing platform on the T-rib 16. S2, according to the structural dimensions of the T-rib 14, adjust the length of the horizontal beam of the walking mechanism in the direction perpendicular to the frame so that the driving wheel 10 is located above the T-rib 16, and the driven wheels 11 on both sides of the rib panel stably fix the detection platform to the T-rib 16, and lock the length of the horizontal beam by the locking device 9. S3, according to the T-shaped rib 14 and the position requirements of the inspection personnel, the first micro motor 8 and the first reducer 7 are used to drive the gear 4 to move up and down relative to the rack 2, and adjust the manned platform 6 to a suitable inspection height. The limiting devices 3 at both ends of the rack 2 limit the movement range of the driving gear 4 and the driven gear 5 to avoid safety hazards. S4, adjust the length of the manned platform 6 and lock it through the locking device 9, and install guardrails, seats or shelves on the manned platform 6 in a modular manner as needed; S5. After the height of the manned platform 6 is determined, the T-ribs 14 are tested according to relevant testing standards. When horizontal movement is required, the second micro motor 18 and the second reducer 17 of the transmission mechanism drive the drive wheel 10 to move the manned platform 6 horizontally. S6. After the test is completed, loosen all locking devices, remove the test platform from the T-shaped rib 16, and install the platform on the corresponding adapter rib according to the position of other ribs to be tested. Repeat steps S2 to S5 to continue the test.

[0018] The beneficial effects of this invention are: (1) Significantly reduces overall costs and improves site utilization. Unlike traditional testing, there is no need to erect scaffolding layer by layer around the components, which fundamentally avoids the large consumption of materials such as steel and fasteners during the erection and dismantling of scaffolding, as well as the labor costs generated by the cooperation of multiple trades such as scaffolders and carpenters. At the same time, it eliminates the problem of scaffolding occupying the production site for a long time, allowing testing operations to be carried out in parallel with other processes such as hoisting, welding, and painting, reducing the delay in the construction period caused by site conflicts and significantly improving the overall production rhythm.

[0019] (2) Flexible adaptation to multiple detection scenarios and optimized work experience: The manned platform achieves precise vertical adjustment through gear-rack transmission, combined with horizontal movement driven by the walking mechanism and its own extendable and adjustable length, which can fully adapt to detection parts of different heights and positions. Detection personnel no longer need to bend over, squat, or stand on tiptoe due to the fixed height of the scaffolding. They can always maintain a comfortable and stable operating posture, greatly reducing physical exertion and fatigue, fundamentally reducing the risk of missed or false detections caused by inconvenient operation, and improving detection accuracy and efficiency.

[0020] (3) Multiple safety measures reduce the risk of working at height. The vertical beams of the main frame and the traveling mechanism are equipped with detachable driven wheels, which can closely fit the structure being inspected to form a stable support. In conjunction with the locking device between the horizontal beam and the manned platform, the platform can be firmly locked in the working position to avoid shaking or displacement. The limiting devices at both ends of the rack further prevent the gears from coming off, forming a double safety protection, effectively eliminating the risk of falling caused by the gap between the traditional scaffold and the components, and providing a solid guarantee for high-altitude inspection operations.

[0021] (4) Modular design expands the scope of application and enhances practicality. The manned platform can be quickly assembled and disassembled with auxiliary facilities such as guardrails, seats, and shelves as needed to meet the safety protection and tool placement requirements in different inspection scenarios. Multiple main frames can also be combined and used through connecting devices to flexibly expand the vertical working range and easily cope with the inspection of ultra-high parts. This design is not only suitable for the inspection of ship shell ring T-ribs, but can also be extended to the weld inspection of large structures such as military equipment and chemical storage tanks. It has strong applicability and can effectively cover the industrial flaw detection needs of multiple fields. Attached Figure Description

[0022] Figure 1 This is a front view of a portable manned mobile detection platform according to an embodiment of the present invention; Figure 2 This is a side view of a portable manned mobile detection platform according to an embodiment of the present invention; Figure 3 This is a top view of a portable manned mobile detection platform according to an embodiment of the present invention; Figure 4 This is a usage diagram of a portable manned mobile detection platform according to an embodiment of the present invention.

[0023] Explanation of icon numbers: 1. Main frame, 2. Rack, 3. Limiting device, 4. Drive gear, 5. Driven gear, 6. Personnel platform, 7. First reducer, 8. First micro motor, 9. Locking device, 10. Drive wheel, 11. Driven wheel, 12. Transmission device, 13. Connecting device, 14. T-rib, 15. Shell ring wall plate, 16. T-rib, 17. Second reducer, 18. Second micro motor. Detailed Implementation

[0024] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0025] To keep the drawings concise, only the parts relevant to the invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, components with the same structure or function are shown only schematically, or only one is labeled.

[0026] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, etc.) used to explain the structure and movement of the various components of the invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are merely some embodiments of the present invention. For those skilled in the art, without creative effort, they can obtain drawings of other similar structural products and other implementation methods based on these drawings.

[0028] Please refer to the accompanying drawings. This embodiment provides a portable manned mobile detection platform, including a main frame 1 and manned platforms and a walking mechanism respectively installed on both sides of the main frame. The main frame 1 mainly serves as a connector and support, and is equipped with a rack 2 and a limiting device 3. The left rack 2 meshes with a drive gear 4, and the right rack 2 meshes with a driven gear 5. The drive gear 4 is driven by a first micro motor 8 and a first reducer 7 installed on the manned platform 6, and can move back and forth on the rack 2 to achieve the purpose of moving the manned platform 6 up and down.

[0029] The manned platform 6 is a telescopic structure. The side of the platform near gears 4 and 5 is hollow, and the other side can extend and retract within the hollow section. The telescopic section can slide into the hollow section of the fixed section and can be locked by the locking device 9. At the same time, the manned platform 6 can be equipped with additional equipment such as guardrails, seats, and shelves according to site requirements.

[0030] A traveling mechanism is installed on the other side of the main frame 1. A drive wheel 10 is installed on the horizontal beam of the traveling mechanism near the main frame 1. This drive wheel 10 can be connected to a second micro motor 18 and a second reducer 17 mounted on the horizontal beam via a transmission 12, enabling the main frame 1 to move horizontally. The horizontal beam is telescopic and can be locked by a locking device 9 to accommodate inspected structures of different sizes and positions. Several detachable driven wheels 11 are installed on the vertical beams of the main frame 1 and the traveling mechanism as needed to stabilize the frame on the inspected structure and assist in movement.

[0031] If necessary, multiple main frames can be connected together and used in combination via the connecting device 13.

[0032] In this embodiment, the portable manned mobile detection platform achieves vertical movement by meshing a gear driven by a motor on the manned platform with a rack on the main frame to form a relative motion in the Y direction. Meanwhile, a retractable horizontal beam installed on the other side of the main frame is equipped with a drive wheel that can move in the X direction. Driven by a motor and a reduction system, the main frame can move horizontally (X is defined as the horizontal movement direction, Y as the vertical movement direction, and Z as the retraction direction of the manned platform).

[0033] Taking a product shell ring as an example, the shell ring has a diameter of nearly eight meters and a height of nearly ten meters. The previous inspection method involved erecting scaffolding layer by layer around the shell ring, and then the inspectors would stand on each layer of scaffolding to conduct the inspection. This method is not only time-consuming and labor-intensive, but also poses significant safety risks to the inspectors working at heights due to the gaps between the shell ring and the scaffolding in some areas. At the same time, because the height of the scaffolding is relatively fixed relative to the part being inspected, the inspectors must bend over and squat to work, which is not only inconvenient to operate, but also easily causes fatigue. Overall, the inspection efficiency is low, and it is easy to miss or misdetect the product. When using the portable manned mobile inspection platform of the present invention for inspection, it is only necessary to suspend the inspection platform at a suitable part of the horizontal structure, such as the ribs surrounding the shell ring, and adjust the length of the horizontal beam of the walking mechanism perpendicular to the frame direction so that the driving wheel is above the rib, while the driven wheels on both sides of the rib panel can stably support the inspection platform on the rib. At this time, the locking device is used to lock the extension length of the horizontal beam. Due to the effect of gravity and the support of the driven wheels on both sides of the panel, the inspection platform can be stably suspended on the rib.

[0034] Based on the positional requirements of the ribs and the inspector relative to the inspected area, a micro motor and reducer drive the gears to create vertical displacement relative to the rack in the Y direction, ensuring the manned platform remains at the appropriate inspection height. Limiting devices at both ends of the rack prevent the gears from disengaging, thus avoiding safety hazards.

[0035] Once the height of the manned platform is determined, the corresponding inspections can be carried out on the parts to be inspected according to the relevant inspection standards. If horizontal movement is required, the drive wheel is moved by the micro motor and reducer installed on the walking mechanism, which enables the manned platform to move horizontally along the X direction to inspect the parts at different positions at the same height.

[0036] The length of the manned platform in the Z direction can be freely extended and adjusted to avoid interference with surrounding objects during movement, and it can be locked by a locking device. At the same time, auxiliary equipment such as guardrails, safety rope suspension positions, seats, and storage racks can be modularly installed as needed.

[0037] After the inspection is completed, loosen all locking devices, remove the manned inspection platform from the ribs, and install the inspection platform on the corresponding appropriate rib according to the location requirements of other parts to be inspected, and then continue the inspection.

[0038] When the part being inspected is at a high position, the rack and pinion limiting device can be disassembled, and multiple main frames can be connected together using a connecting device to achieve a larger range of displacement in the Y direction.

[0039] The specific steps for using the portable manned mobile detection platform in this embodiment are as follows: Step 1: Select a suitable T-rib 16 according to the position of the T-rib 14 to be inspected welded on the shell wall plate 15, and suspend the manned mobile inspection platform on the T-rib 16.

[0040] Step 2: According to the structural dimensions of the T-rib 14, adjust the length of the horizontal beam of the traveling mechanism on the rib 16 perpendicular to the frame direction so that the driving wheel 10 is located above the rib, and the driven wheels 11 on both sides of the rib panel can stably fix the detection platform on the rib. At this time, use the locking device 9 to lock the length of the horizontal beam.

[0041] Step 3: According to the requirements of the rib 14 and the position of the inspection personnel, the first micro motor 8 and the first reducer 7 drive the gears 4 and 5 to move up and down relative to the rack 2, so that the manned platform 6 is at a suitable height. The limiting devices 3 located at both ends of the rack 2 are used to ensure that the gears do not come off the rack, so as to avoid safety hazards.

[0042] Step 4: Adjust the length of the manned platform 6 and lock it with the locking device 9. At the same time, auxiliary equipment such as guardrails, seats, and shelves can be modularly installed as needed.

[0043] Step 5: After the height of the manned platform 6 is determined, the T-ribs 14 are tested according to the relevant testing standards. When movement is required, the second micro motor 18 and the second reducer 17 of the transmission mechanism drive the drive wheel 10 to move, so as to make the manned platform move horizontally.

[0044] Step 6: After the inspection is completed, loosen all locking devices, remove the manned inspection platform from rib 16, and install the inspection platform onto the corresponding suitable rib according to the other ribs that need to be inspected, and then continue the inspection.

[0045] Step 7: If necessary, multiple main frames can be connected together for combined use by disassembling the rack and pinion limiting device 3 and using the connecting device 13.

[0046] Compared to traditional inspection methods, this method allows for the horizontal movement of the main frame and the vertical movement of the personnel platform, enabling the personnel to move relative to the inspected area in the X and Y directions. The platform itself can also move in the Z direction (X is horizontal, Y is vertical). For areas with a certain working height, this not only avoids the frequent erection of scaffolding, which occupies production space and time, and reduces labor and material consumption, but also avoids the disadvantages of fixed scaffolding height relative to the inspected area, which makes operation inconvenient in certain positions. It allows workers to flexibly adjust their working posture as needed, greatly improving the working environment, avoiding the safety hazards of working at height, and effectively improving the efficiency of related operations.

[0047] In summary, when inspecting parts with a certain working height, using this portable manned mobile inspection platform avoids the frequent erection of scaffolding, which occupies production space and time, and can greatly reduce labor and material consumption. It also avoids the disadvantages of scaffolding being erected at a fixed height relative to the inspected part, which is inconvenient for operation in certain positions. This allows operators to flexibly adjust their working posture as needed, greatly improving the working environment and effectively increasing the efficiency of related operations.

[0048] Finally, the method described in this application is merely a preferred embodiment and is not intended to limit the scope of protection of this invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A portable manned mobile detection platform, characterized in that, It includes a main frame (1), a manned platform (6) and a walking mechanism; the manned platform (6) and the walking mechanism are respectively installed on both sides of the main frame (1); the main frame (1) is used to connect and support the manned platform (6) and the walking mechanism; the manned platform (6) moves up and down on the main frame (1) through a transmission structure; the walking mechanism drives the main frame (1) to move horizontally through drive wheels.

2. The portable manned mobile detection platform according to claim 1, characterized in that, A rack (2) is installed on the main frame (1). The manned platform (6) is provided with a drive gear (4) and a driven gear (5) that mesh with the rack (2) at one end near the main frame (1). Through the meshing transmission between the drive gear (4) and the driven gear (5) and the rack (2), the manned platform (6) can move vertically.

3. The portable manned mobile detection platform according to claim 2, characterized in that, The drive gear (4) is connected to a drive assembly, which includes a first micro motor (8) and a first reducer (7); the output end of the first micro motor (8) is connected to the first reducer (7), and the output end of the first reducer (7) is connected to the drive gear (4) to drive the drive gear (4) to rotate.

4. The portable manned mobile detection platform according to claim 1, characterized in that, The manned platform (6) is a retractable structure, including a fixed section and a telescopic section; the fixed section is hollow inside, and the telescopic section is slidably inserted into the hollow part of the fixed section; a locking device is provided between the fixed section and the telescopic section to lock the telescopic length of the telescopic section; at least one auxiliary facility among guardrails, seats or shelves can be selectively installed on the manned platform (6).

5. The portable manned mobile detection platform according to claim 1, characterized in that, The walking mechanism includes a horizontal beam, a driving wheel (10), and a driven wheel (11); one end of the horizontal beam is connected to the main frame (1), and the driving wheel (10) and the driven wheel (11) are respectively installed on the side of the horizontal beam close to the main frame (1); the horizontal beam is provided with a walking drive assembly, which includes a second micro motor (18), a second reducer (17), and a transmission (12) for driving the driving wheel (10) to rotate so as to drive the main frame (1) to move horizontally.

6. The portable manned mobile detection platform according to claim 5, characterized in that, The horizontal beam is a telescopic structure, including a fixed beam and a telescopic beam; the telescopic beam is slidably connected to the fixed beam, and a locking device is provided between the two to lock the telescopic beam's extension length to accommodate different specifications of the inspected structure.

7. The portable manned mobile detection platform according to claim 2, characterized in that, The vertical beams of the main frame (1) and the vertical beams of the traveling mechanism are provided with several driven wheels (11); the driven wheels (11) are detachable structures used to stabilize the platform on the inspected structure and assist the platform in moving; the rack (2) is provided with limiting devices (3) at both ends; the limiting devices (3) are used to limit the movement range of the driving gear (4) and the driven gear (5) to prevent the driving gear (4) and the driven gear (5) from dislodging from the rack (2).

8. The portable manned mobile detection platform according to claim 1, characterized in that, It also includes a connecting device (13); the connecting device (13) is a detachable structure used to connect multiple main frames (1) in the vertical direction to expand the vertical movement range of the manned platform (6); the auxiliary facilities are connected to the manned platform (6) through modular connectors; the modular connectors include bolt assemblies or snap-fit ​​structures, so that the auxiliary facilities can be quickly disassembled or installed.

9. A method for operating a portable manned mobile detection platform as described in any one of claims 1-8, characterized in that, Includes the following steps: S1. Based on the position of the T-rib (14) to be tested on the shell wall plate (15), select a suitable T-rib (16) for installation and suspend the manned mobile testing platform on the T-rib (16). S2, according to the structural dimensions of the T-rib (14), adjust the length of the horizontal beam of the walking mechanism in the direction perpendicular to the frame so that the driving wheel (10) is located above the T-rib (16) and the driven wheels (11) on both sides of the rib panel stably fix the detection platform to the T-rib (16), and lock the length of the horizontal beam by the locking device (9); S3, according to the T-shaped rib (14) and the position requirements of the inspection personnel, the first micro motor (8) and the first reducer (7) drive the gear (4) to move up and down relative to the rack (2) to adjust the manned platform (6) to a suitable inspection height. The limiting devices (3) at both ends of the rack (2) limit the movement range of the driving gear (4) and the driven gear (5) to avoid safety hazards. S4, adjust the length of the manned platform (6) and lock it through the locking device (9), and install guardrails, seats or shelves on the manned platform (6) in a modular manner as needed; S5. After the height of the manned platform (6) is determined, the T-shaped ribs (14) are tested according to the relevant testing standards. When horizontal movement is required, the second micro motor (18) and the second reducer (17) of the transmission (12) and the walking mechanism drive the drive wheel (10) to move the manned platform (6) horizontally. S6. After the test is completed, loosen all locking devices, remove the test platform from the T-shaped rib (16), and install the platform on the corresponding matching rib according to the position of other ribs to be tested. Repeat steps S2 to S5 to continue the test.

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