An ultra-high-rise large-suspended-ceiling hanging mobile platform construction device and method

Abstract

The application provides a super-high large-suspended-ceiling hanging mobile platform construction device and method, which realizes full coverage and high-precision installation of a high-altitude large-span suspended-ceiling construction area through organic combination of a multi-row guide rail system and a modular mobile platform; adopts double-car redundant connection and a chain block fine adjustment mechanism to significantly improve platform positioning precision and wind resistance stability; ensures safety and reliability of the construction process through a multi-point synchronous winch lifting system and a strict safety control process; the device also has the characteristics of modularity, disassembly and reusability, flexible construction organization, and is suitable for various super-high building suspended ceilings, curtain walls and maintenance operation scenes, and has good economic benefits and promotion value.

Description

Technical Field

[0001] This invention relates to the field of construction technology for suspended ceilings of super high-rise large-span connecting corridors, and in particular to a construction device and method for a suspended mobile platform for super high-rise large-span suspended ceilings. Background Technology

[0002] In recent years, with the rapid development of super high-rise buildings, large-span aerial structures such as connecting corridors and portal frames have been widely used in modern urban landmark buildings. These structures often feature large decorative ceilings at heights of over 100 meters, and their construction height, span, and complex shapes place extremely high demands on construction technology. Taking the T3 connecting corridor of an international financial center as an example, its ceiling is located at a height of 140 meters with a span of 60 meters. It requires the installation of open aluminum panels and a keel system, and the construction must be carried out in stages before and after the overall steel structure is lifted, making the construction organization difficult and posing high safety risks.

[0003] Currently, the construction of such high-altitude, large-span suspended ceilings mostly employs traditional scaffolding, suspended platforms, or single-point suspension platforms. Scaffolding has a long erection period, consumes a large amount of materials, has limited coverage, and suffers from poor stability in high-altitude environments, making it difficult to meet the demands of continuous large-span operations. While suspended platforms offer some mobility, their coverage area is small, their wind resistance is weak, and the precision of multi-point synchronous control is low, easily leading to installation deviations. Single-point or double-point suspension platforms can partially improve construction efficiency, but they are prone to swaying under large-span conditions, making it difficult to guarantee installation accuracy, and they lack effective redundancy protection mechanisms, posing significant safety hazards. Furthermore, traditional construction methods have obvious shortcomings in material transportation, personnel access, and process coordination, especially in efficiency when finishing corners and irregularly shaped areas, making it difficult to meet the comprehensive requirements of modern super high-rise buildings for schedule, quality, and safety.

[0004] Therefore, existing technologies generally suffer from problems such as insufficient coverage of the working surface, low installation accuracy, poor wind resistance, difficulty in safety control, and low construction efficiency in high-rise, large-span suspended ceiling construction. There is an urgent need to develop a suspended mobile construction platform system and method with full coverage capability, high-precision control, multiple safety guarantees, and suitability for ultra-high-rise, large-span suspended ceiling construction, in order to meet the increasingly complex needs of building construction. Summary of the Invention

[0005] The purpose of this invention is to provide a construction device and method for a suspended mobile platform for ultra-high-rise large ceilings, so as to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: This invention provides a construction device for a suspended mobile platform for ultra-high-rise large ceilings, comprising: The suspended guide rail system is fixed to the lower chord of the connecting corridor or portal frame. The suspended guide rail system has at least four rows of standard straight guide rails that are parallel to each other in the central area, and irregular guide rails that match the building boundary in the edge and corner areas. Both the standard straight guide rails and the irregular guide rails are spliced ​​together from I-beam segments and fixed to the lower chord of the main steel structure by fillet welds. The modular mobile platform adopts a detachable frame structure. Its main beam is made of H-beams or welded box beams, and the secondary beams are channel steel or square tubes. The modular mobile platform is equipped with lifting nodes and trolley connection nodes on its four sides and in the middle. The surface of the modular mobile platform is covered with anti-slip steel plates and is equipped with railings and kickboards. The track trolley connection assembly includes a first trolley and a second trolley disposed at each of the trolley connection nodes. Both the first trolley and the second trolley are zipper-type track trolleys. The first trolley is connected to the modular mobile platform via a hand-operated hoist for fine-tuning and leveling. The second trolley is rigidly connected to the modular mobile platform via a square tube to form anti-sway and load-bearing redundancy. A multi-point synchronous winch lifting system includes a winch, which is fixed to the main steel structure and lifts and lowers synchronously. Each modular mobile platform is provided with no less than four lifting nodes, which are connected to the winch via wire ropes, matching pulleys, and shackles. The safety control module includes a control switch box, guy ropes, load sensors, meteorological monitoring devices, platform access control, and safety belt sensors.

[0007] Preferably, the standard linear guide rail is made of 22# I-beam, with a single section length of 2m and bevel butt welded; the irregular guide rail has a single section length of 3m, with stiffening plates and transition sections at the corners. Both the standard linear guide rail and the irregular guide rail are continuously welded to the lower chord of the main steel structure using 8mm fillet welds and are subject to magnetic particle inspection.

[0008] Preferably, the modular mobile platform has external dimensions of 4000mm × 15080mm, a platform clearance width ≥ 600mm, and a safety factor ≥ 2.0.

[0009] Preferably, the track carriage connecting assembly is provided with a mechanical limiting and pin anti-derailment mechanism at the end of the guide rail, and the carriage body is provided with a self-locking mechanism to prevent the platform from sliding or derailing.

[0010] Preferably, the control switch box adopts the same frequency control algorithm, the speed difference of the winch is <3%, and it is equipped with upper limit, lower limit and emergency stop switches. If any one of them is triggered, the whole group will stop. It is also equipped with load warning and tilt threshold. When the yaw angle of the modular mobile platform exceeds ±2°, it will automatically alarm and lock.

[0011] Preferably, the ceiling working surface is divided into three areas: the central large surface, the edge area, and the corner area. The irregular area of ​​the edge area adopts the modular mobile platform and the modified irregular mobile platform arranged at an angle. The corner area adopts the window cleaning machine track and the sliding rail carriage suspended small platform that has been constructed, so as to realize continuous operation with full space coverage.

[0012] Preferably, the meteorological monitoring device monitors the wind speed in real time during the platform lifting and construction phases, and vertical lifting is prohibited when the wind speed is >10m / s; the platform access control is linked to the safety belt sensor, and lifting is not allowed to start when the access is not locked; when adjacent modular mobile platforms in the same span are in the lifting state, the third modular mobile platform is prohibited from entering the span to avoid rope interference.

[0013] This invention also provides a construction method for a suspended mobile platform for ultra-high-rise large ceilings, comprising the following steps: S1. On the ground, complete the assembly of the guide rails and keel in the middle area of ​​the connecting corridor. Weld and fix the standard straight guide rails to the lower chord of the main steel structure. After the main truss is lifted as a whole, use the inverted scaffolding as a working platform to complete the aerial welding of the irregular guide rails on the side. S2. Assemble the modular mobile platform on the ground and perform a self-inspection. The modular mobile platform is simultaneously lifted to below the ceiling by a winch unit with no less than four lifting nodes. After being lifted 20-50cm, it is left to stand for 30 minutes for a comprehensive inspection of the structure, wire rope, trolley, and welds. Only after passing the inspection can the lifting continue. S3. After the platform is in place, the first trolley is leveled using a hand-operated hoist. The second trolley is rigidly fixed to the platform using a square tube. The guy ropes are removed or converted into temporary lateral limiters. The modular mobile platform completes the installation of aluminum plates and keels in the middle, side and corner areas along the guide rail. S4. Materials should be transferred and used immediately from above the floor or ceiling. Overloading and stacking on the modular mobile platform is prohibited. A comprehensive inspection and maintenance should be carried out before and after each lifting and lowering of the modular mobile platform, and a traceable quality and safety record should be formed.

[0014] Preferably, the aluminum panels are installed in the order of "from center to edge, panel first and then edge closing", with a panel gap width of 4mm, and flatness and color difference are inspected during the process; a 2mm thick silver-white anodized aluminum plate is set on the inner side of the open aluminum panel as a waterproof backing, and the joints are treated with a combination of structural adhesive and sealing strip.

[0015] Preferably, when the platform's self-weight or operating load increases, the number of winches increases from 4 to 6, the wire rope diameter is correspondingly increased to Φ18 or Φ20, the specifications of the trolley and square tube are adjusted simultaneously and finite element verification is performed; stiffening ribs and back plates are added to the guide rail nodes in high stress areas, and the welds are subjected to 100% UT or MT inspection.

[0016] The present invention achieves the following beneficial technical effects compared to the prior art: This invention provides a construction device and method for a suspended mobile platform for ultra-high-rise large ceilings. Through the organic combination of a multi-row guide rail system and a modular mobile platform, it achieves full coverage and high-precision installation of the construction area for high-rise, large-span ceilings. The use of a dual-carriageway redundant connection and a hand-operated hoist fine-tuning mechanism significantly improves the platform's positioning accuracy and wind resistance stability. A multi-point synchronous winch lifting system and strict safety control procedures ensure the safety and reliability of the construction process. The device is also modular, detachable, and reusable, offering flexible construction organization and applicability to various ultra-high-rise building ceiling, curtain wall, and maintenance operation scenarios, demonstrating good economic benefits and promotional value. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a diagram showing the distribution of the suspended guide rail system and the ceiling working surface area in this invention; Figure 2 This is a schematic diagram of the vertical lifting area of ​​the modular mobile platform in this invention; Figure 3 This is a schematic diagram illustrating the modular mobile platform enhancement in this invention; Figure 4 This is a schematic diagram of the modular mobile platform in this invention; Figure 5 This is a schematic diagram of the standard linear guide rail connection in the middle large area of ​​the present invention; Figure 6 This is a schematic diagram of the irregular guide rail connection in the edge region of the present invention; Figure 7 This is a schematic diagram of the lifting node and the vehicle connection node in this invention. Detailed Implementation

[0019] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The purpose of this invention is to provide a construction device and method for a suspended mobile platform for ultra-high-rise large ceilings, so as to solve the problems existing in the prior art.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1: This embodiment provides a construction device for a suspended mobile platform for ultra-high-rise large ceilings. Taking the construction of the large ceiling in the T3 corridor of the Yinglan International Financial Center project in Xiamen New Coastal Financial District as an example, such as... Figure 1-7As shown, in actual engineering, it is installed on the bottom surface of the lower chord steel beam of the connecting corridor or portal frame. The T3 connecting corridor has a span of 60m and a bottom elevation of 134.8m. The ceiling uses 3mm fluorocarbon-coated aluminum panels with 4mm vertical and horizontal joints, and an additional 2mm silver-white anodized aluminum waterproof lining is installed on the inside. The construction is carried out in two phases. Before the overall lifting of the connecting corridor, the welding of the keel and guide rails in the middle area is completed. After the overall lifting, the remaining aluminum panels and finishing installation are completed. The device transforms the traditional multiple high-altitude assembly and disassembly into a single ground integration, overall lifting, and segmented sliding operation mode by adopting the concept of "one-time ground assembly, segmented placement in the air, and continuous platform sliding", which significantly reduces the high-altitude operation time.

[0025] Specifically, the suspended guide rail system is first laid out on the ground using a total station. Four rows of standard straight guide rails are symmetrically arranged with the longitudinal centerline of the connecting corridor as the reference. Each row consists of several sections of 22# I-beams butt-welded together to form a continuous track. Each section is 2m long with a weld height of 8mm, and undergoes 100% magnetic particle testing after welding. For the edges and corners, materials are laid out and cut according to the curtain wall partition boundaries, using 3m long I-beams in conjunction with CNC-cut transition segments to ensure that the deviation between the track centerline and the aluminum plate splice center is ≤2mm. All guide rails are welded and fixed to the lower chord of the steel beams during the upper chord ground assembly stage. The welds are continuous and full, allowing the guide rails to be in place with the connecting corridor in one go during overall lifting, avoiding open flame work at height. Mechanical limit plates and pins are installed at the ends of the tracks to prevent trolleys from running off course. Temporary inspection ports are added at both ends of the connecting corridor and in the middle of the span for easy future maintenance.

[0026] Furthermore, the modular mobile platform is integrally welded onto a ground-based frame. The main beams are made of H-beams of 400×200×8×13mm, and the secondary beams are made of 12-channel steel. The longitudinal and transverse beam nodes are connected using 10.9-grade high-strength bolts to form a 4000mm×15080mm frame. Based on the dimensions of the transport opening, a detachable node is installed in the middle of the frame, resulting in a detached size of 4000mm×12080mm, meeting the lifting requirements of construction elevators and tower cranes. The platform surface is fully welded with 5mm patterned steel plates and equipped with 5mm thick anti-slip strips. A 1.2m high railing and 18cm kickboard are welded around the perimeter. 20mm thick ear plates are installed at the four corners and at one-quarter of the long side, serving as both hoisting points and trolley connection points. The ear plate aperture... 26mm thick, heat-treated. The platform load is designed based on its own weight + 5 people + 200kg of materials, with a safety factor of 2.0. The maximum deflection verified by finite element analysis is ≤L / 400. After all welding, flaw detection, corrosion protection, and marking are completed on the ground, the platform is hoisted as a whole to the storage area for later use.

[0027] Furthermore, the track trolley connection assembly adopts a dual-cart redundant design: each trolley has a rated load of 3t, a first wheel flange width of 90mm, and matches the flange of a 22# I-beam; the first trolley is connected to the platform ear plate via a 3t hand-operated hoist for fine-tuning of levelness, with a fine-tuning stroke of ±100mm and an accuracy of 1mm; the second trolley is rigidly fixed to the platform via a 100mm×100mm×8mm square tube, with features at both ends of the square tube. The 22-pin design provides anti-sway and load-bearing redundancy. The trolley features a self-locking wedge for instantaneous braking in case of power failure or rope breakage. A 10mm thick continuous limit strip is welded to the inner side of the guide rail, cooperating with the trolley's guide wheels to prevent lateral derailment. When moving the platform, first release the hand chain hoist, then start the trolley motor to achieve longitudinal sliding. The sliding speed is adjustable from 0-5m / min. After reaching the desired position, lock the hand chain hoist and insert the safety pin.

[0028] Furthermore, the multi-point synchronous winch lifting system symmetrically arranges four rated 3t winches at the main node of the upper chord of the connecting corridor. The winch bases are connected to the steel beam flanges with high-strength bolt clamps, without damaging the base material; each winch is equipped with 166×19-1960 steel core wire ropes, guided by a 5t closed pulley, are vertically lowered to the platform hoisting point. The rope ends are secured with 4.75t shackles and three heavy-duty rope clamps. The interlocking control switch box is located on the upper chord of the connecting corridor. The PLC program ensures that the synchronization error of the four machines is ≤3%. Four protections are provided: upper limit, lower limit, overload, and tilt protection; triggering any signal will cause an emergency stop for the entire machine. Before lifting, safety barriers are installed between the four corners of the platform and the structural columns. The platform is lifted using 12 adjustable guy ropes to maintain its level. When 20cm off the ground, it remains stationary for 30 minutes to inspect the welds, rope clamps, trolley, and weld stress. Once no abnormalities are confirmed, lifting continues until the platform is in place. After the platform is in place, the winch maintains tension, and the second trolley is immediately rigidly connected to the platform using a square tube. The guy ropes are then removed, and the platform is switched to lateral limiting. After unloading, the winch enters the sliding mode.

[0029] Furthermore, a safety control module is implemented throughout the entire construction process. Anemometers, rain gauges, and visibility sensors monitor the environment in real time, automatically locking the lifting mechanism when wind speeds reach ≥10m / s or during heavy rain or fog. The platform entrance is equipped with access control linked to safety belt buckles; operation is prohibited without a safety belt. Load sensors display the platform's total weight in real time, triggering an alarm and shutdown if overloaded by 110%. When two platforms are operating simultaneously within the same span, a third platform is prohibited from entering to prevent rope crossing. All critical data is uploaded to the project's BIM platform, creating a traceable record. After construction, the platform is lowered to the ground. The winch, trolley, and wire ropes are periodically inspected, maintained, and documented. The platform frame is disassembled and stored according to its number, achieving full lifecycle management.

[0030] Example 2: In terms of construction methods, in the first phase, after the connecting corridor is assembled on the ground, a tower crane is used to hoist four rows of standard linear guide rails into the ground in sections. After being positioned and welded to the lower chord, two welders perform symmetrical welding. After each section is welded, ultrasonic testing is performed. Only after passing the test can the next section be proceeded, ensuring a first-pass yield rate of ≥98% for the welds. The keel is assembled on the ground simultaneously, with the main aluminum square tube keel spacing at 1200mm and the secondary keel at 600mm. All connecting bolts are tightened to the design torque in one go. Before the overall lifting, 60% of the keel installation in the central area is completed. In the second phase, after the connecting corridor is lifted into place, the inverted scaffolding is used as an operating platform to complete the welding of the remaining irregular guide rails and finishing keels on the edges. After the modular mobile platform completes self-inspection on the ground, it is hoisted to the area below the connecting corridor by a tower crane in one go. The winch wire rope is pre-installed, and the platform is lifted simultaneously through four lifting points. During the lifting process, dedicated personnel are assigned to direct, monitor, and record the process. After the platform is in place, it is precisely adjusted to the ceiling design elevation ±3mm using a hand-operated hoist. Then, the second carriage is locked and the winch rope is removed, and the platform enters the sliding installation stage.

[0031] The aluminum panel installation follows the sequence of "from center to edge, large surfaces first, then finishing edges." The platform is first slid to the mid-span, and construction workers deliver the aluminum panel units directly to the platform from the floor using a tower crane. The panels are fixed to the keel using M6 stainless steel self-tapping screws and aluminum alloy pressure plates. Foam rods are filled into the panel joints before applying sealant, with a joint width of 4mm and a depth of 3mm, ensuring the sealant is full, continuous, and bubble-free. Irregularly shaped aluminum panels at the edges are pre-laid out and numbered on the ground. After the platform slides to the corresponding position, the aluminum panels are pushed into place using telescopic support rods, ensuring consistency with adjacent panel joints. In the corner areas, a 3m×4m small platform is suspended from the pre-installed window cleaning machine track. This small platform also uses a double-carriageway + hand-operated hoist structure to complete the final finishing and inspection panel installation. After all aluminum panels are installed, the overall flatness and color difference are re-measured. The flatness deviation is ≤2mm / 2m, and the color difference ΔE ≤1.5, meeting the design requirements.

[0032] Throughout the process, materials are managed in a closed loop: centralized stacking on each floor – vertical transportation by tower crane – immediate installation on the platform. Overnight storage of materials on the platform is strictly prohibited. Before and after each daily lifting and lowering of the platform, a dedicated safety officer, mechanic, and quality inspector jointly inspect and record the findings. Inspections include weld seams, bolts, wire rope wear, pulley wheel wear, and the electrical control system. Monthly disassembly, maintenance, flaw detection, and lubrication are performed on all winches, trolleys, and wire ropes to ensure the equipment remains under control. Through these implementation methods, this invention, in its practical application on the T3 connecting corridor, achieves a 60m span, 140m height, and a total area of ​​approximately 1800m² in a single operation. 2 The installation of aluminum panel ceilings shortened the total construction period by 18 days compared to the traditional method, reduced the number of people working at heights from 30 to 12 per day, and did not result in any safety accidents, thus verifying the reliability, economy, and promotional value of the device and method.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] It should be noted that the components mentioned in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0035] This invention has illustrated its principles and implementation methods using specific examples. The descriptions of these embodiments are merely illustrative of the method and its core ideas; furthermore, those skilled in the art will recognize that modifications may be made to the specific implementation methods and application scope based on the principles of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. A construction device for a suspended mobile platform for ultra-high-rise large ceilings, characterized in that: include: The suspended guide rail system is fixed to the lower chord of the connecting corridor or portal frame. The suspended guide rail system has at least four rows of standard straight guide rails that are parallel to each other in the central area, and irregular guide rails that match the building boundary in the edge and corner areas. Both the standard straight guide rails and the irregular guide rails are spliced ​​together from I-beam segments and fixed to the lower chord of the main steel structure by fillet welds. The modular mobile platform adopts a detachable frame structure. Its main beam is made of H-beams or welded box beams, and the secondary beams are channel steel or square tubes. The modular mobile platform is equipped with lifting nodes and trolley connection nodes on its four sides and in the middle. The surface of the modular mobile platform is covered with anti-slip steel plates and is equipped with railings and kickboards. The track trolley connection assembly includes a first trolley and a second trolley disposed at each of the trolley connection nodes. Both the first trolley and the second trolley are zipper-type track trolleys. The first trolley is connected to the modular mobile platform via a hand-operated hoist for fine-tuning and leveling. The second trolley is rigidly connected to the modular mobile platform via a square tube to form anti-sway and load-bearing redundancy. A multi-point synchronous winch lifting system includes a winch, which is fixed to the main steel structure and lifts and lowers synchronously. Each modular mobile platform is provided with no less than four lifting nodes, which are connected to the winch via wire ropes, matching pulleys, and shackles. The safety control module includes a control switch box, guy ropes, load sensors, meteorological monitoring devices, platform access control, and safety belt sensors.

2. The construction device for a suspended mobile platform for ultra-high-rise large ceilings according to claim 1, characterized in that: The standard linear guide rail is made of 22# I-beam steel, with a single section length of 2m and bevel butt welding; the irregular guide rail has a single section length of 3m, with stiffening plates and transition sections at the corners. Both the standard linear guide rail and the irregular guide rail are continuously welded to the lower chord of the main steel structure with 8mm fillet welds and are subject to magnetic particle inspection.

3. The construction device for a suspended mobile platform for ultra-high-rise large ceilings according to claim 1, characterized in that: The modular mobile platform has external dimensions of 4000mm×15080mm, a platform clearance width of ≥600mm, and a safety factor of ≥2.

0.

4. The construction device for a suspended mobile platform for ultra-high-rise large ceilings according to claim 1, characterized in that: The track carriage connection assembly is equipped with a mechanical limit and pin anti-derailment mechanism at the end of the guide rail, and the carriage body is equipped with a self-locking mechanism to prevent the platform from sliding or derailing.

5. The construction device for a suspended mobile platform for ultra-high-rise large ceilings according to claim 1, characterized in that: The control switch box adopts the same frequency control algorithm, the speed difference of the winch is <3%, and it is equipped with upper limit, lower limit and emergency stop switches. If any one of them is triggered, the whole group will stop. It is also equipped with load warning and tilt threshold. When the yaw angle of the modular mobile platform exceeds ±2°, it will automatically alarm and lock.

6. The construction device for a suspended mobile platform for ultra-high-rise large ceilings according to claim 1, characterized in that: The ceiling work surface is divided into three areas: the central large surface, the edge area, and the corner area. The irregular area of ​​the edge area uses the modular mobile platform and the modified irregular mobile platform arranged at an angle. The corner area uses the window cleaning machine track and the sliding rail carriage suspended small platform that has been completed, so as to achieve continuous operation with full space coverage.

7. The construction device for a suspended mobile platform for ultra-high-rise large ceilings according to claim 1, characterized in that: The meteorological monitoring device monitors wind speed in real time during the platform lifting and construction phases. Vertical lifting is prohibited when the wind speed is greater than 10 m / s. The platform access control is linked to the safety belt sensor. Lifting is not allowed when the access is not locked. When adjacent modular mobile platforms in the same span are in the lifting state, a third modular mobile platform is prohibited from entering the span to avoid rope interference.

8. A construction method for a suspended mobile platform for ultra-high-rise large ceilings, characterized in that, Includes the following steps: S1. On the ground, complete the assembly of the guide rails and keel in the middle area of ​​the connecting corridor. Weld and fix the standard straight guide rails to the lower chord of the main steel structure. After the main truss is lifted as a whole, use the inverted scaffolding as a working platform to complete the aerial welding of the irregular guide rails on the side. S2. Assemble the modular mobile platform on the ground and perform a self-inspection. The modular mobile platform is simultaneously lifted to below the ceiling by a winch unit with no less than four lifting nodes. After being lifted 20-50cm, it is left to stand for 30 minutes for a comprehensive inspection of the structure, wire rope, trolley, and welds. Only after passing the inspection can the lifting continue. S3. After the platform is in place, the first trolley is leveled using a hand-operated hoist. The second trolley is rigidly fixed to the platform using a square tube. The guy ropes are removed or converted into temporary lateral limiters. The modular mobile platform completes the installation of aluminum plates and keels in the middle, side and corner areas along the guide rail. S4. Materials should be transferred and used immediately from above the floor or ceiling. Overloading and stacking on the modular mobile platform is prohibited. A comprehensive inspection and maintenance should be carried out before and after each lifting and lowering of the modular mobile platform, and a traceable quality and safety record should be formed.

9. The construction method for a suspended mobile platform for ultra-high-rise large ceilings according to claim 8, characterized in that: The aluminum panels are installed in the order of "from center to edge, panel first and then edge closing", with a panel gap width of 4mm. Flatness and color difference are inspected during the process. The inner side of the open aluminum panel is equipped with a 2mm thick silver-white anodized aluminum plate as a waterproof backing. The joints are treated with a combination of structural adhesive and sealing strip.

10. The construction method for a suspended mobile platform for ultra-high-rise large ceilings according to claim 8, characterized in that: When the platform's self-weight or operating load increases, the number of winches increases from 4 to 6, the wire rope diameter is correspondingly increased to Φ18 or Φ20, the specifications of the trolley and square tube are adjusted simultaneously and finite element verification is performed; stiffening ribs and back plates are added to the guide rail nodes in high stress areas, and the welds are subjected to 100% UT or MT inspection.

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