Safety hoisting device for fabricated prefabricated part of super high-rise building

Abstract

The invention provides a super high-rise building fabricated prefabricated part safety hoisting device which comprises an annular horizontal hoisting system arranged on an operation layer and used for horizontal transportation of unit plates. The vertical hoisting system is arranged above the operation layer, and a power steel wire rope of the vertical hoisting system extends downwards and is used for hoisting the unit plate; the safe wind-resistant system is arranged on the ground layer and comprises a wind-resistant electric hoist, a cable wind rope and a carrying pole beam; the wind-resistant electric hoist is mounted on the fixed base, one end of the cable wind rope is wound on the wind-resistant electric hoist, and the other end of the cable wind rope is guided by the reversing base and then is connected to a fixed point on the annular horizontal hoisting system; the carrying pole beam is connected to the cable wind rope in a sliding mode. According to the invention, the cost investment and the high-altitude operation risk of personnel are obviously reduced, and finally, an integrated hoisting solution which is safe, efficient and economical and is specially used for the super high-rise building is formed.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of super high-rise building assembly prefabricated component safety hoist device. BACKGROUND

[0002] With the vigorous development of super high-rise building, glass curtain wall is widely used due to its good lighting, thermal insulation and modernity. At present, the installation and construction of such building unit curtain wall plate generally relies on tower crane. The traditional construction method is as follows: first, the unit plate is hoisted to the target work layer unloading platform by the tower crane; then, the worker transfers the plate to the floor inside; finally, the unit plate is pushed out of the building facade from the inside of the building during installation, and the operator rotates, adjusts and finally installs it in place in the high-altitude environment. However, this traditional method has many inherent defects, which cannot meet the stringent requirements of modern super high-rise buildings, especially in coastal areas with strong wind, for safety, efficiency and cost control: 1) High safety risk: workers need to frequently perform hoisting operations in the unloading platform, which is a dangerous edge area, and push large-sized plates out of the building for high-altitude adjustment, which is prone to swing under the action of wind, with a high risk of losing control, posing a serious threat to personnel safety; 2) Low mechanical efficiency and high cost: as the core vertical transportation equipment of the project, the tower crane is occupied for a long time by curtain wall installation, which seriously affects other work operations and slows down the overall project progress, and large suction cars or forklifts still need to be rented, increasing the cost of equipment rental; 3) High labor input and low automation level: the entire process highly depends on manual operation and coordination, is labor-intensive, and has low automation and mechanization level, which is a bottleneck for construction efficiency; 4) Poor wind resistance: the traditional method lacks effective active wind resistance measures and can only rely on personnel experience for judgment and operation, which needs to be suspended in windy conditions, resulting in a short construction window period, especially for super high-rise buildings in coastal areas with significant wind load.

[0003] Therefore, there is an urgent need in the art for a curtain wall installation device that can overcome the above-mentioned defects, is specifically used for super high-rise buildings, has high automation level, is safe and reliable, and is efficient. SUMMARY

[0004] The present application provides a super high-rise building assembly prefabricated component safety hoist device, which can effectively solve the above problems.

[0005] The present application is implemented as follows: A super high-rise building assembly prefabricated component safety hoist device, comprising a ring-shaped horizontal hoisting system arranged at the work layer for horizontal transportation of unit plates; Vertical lifting system, which is arranged above the working layer, and the power wire rope extends downward to lift the unit block; Safety wind resistance system, which is arranged on the ground layer, includes wind resistance electric hoist, cable wind rope and pole beam; the wind resistance electric hoist is installed on the fixed base, one end of the cable wind rope is wound on the wind resistance electric hoist, and the other end is connected to the fixed point on the ring-shaped horizontal lifting system through the reversing base; the pole beam is slidably connected to the cable wind rope, and is used for holding and restraining the unit block during lifting of the unit block, so that the unit block moves along the path of the cable wind rope.

[0006] The beneficial effects of the present application are: (1) The present application realizes revolutionary improvement of the prefabricated component lifting process of super high-rise building through the synergistic operation of the three systems: the safety wind resistance system cooperates with the vertical lifting system to eliminate the wind-induced swing risk of the component in the air and greatly improves the operation safety by intelligently interlocking to control the tension and release of the cable wind rope; the vertical lifting system independently undertakes the lifting task, liberates the tower crane and optimizes the overall construction efficiency; after the component reaches the working layer, the ring-shaped horizontal lifting system undertakes and precisely positions the installation along the ring-shaped track, without the need for secondary transfer and large auxiliary machinery in the building, which significantly reduces the cost investment and personnel high-altitude operation risk, and finally forms an integrated lifting solution that is safe, efficient, economical and specially used for super high-rise buildings. BRIEF DESCRIPTION OF DRAWINGS

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0008] Figure 1 is a side view structural schematic diagram of the working layer of the vertical lifting system and the safety wind resistance system of the present application.

[0009] Figure 2 is a side view structural schematic diagram of the ring-shaped horizontal lifting system of the present application.

[0010] Figure 3 is a side view structural schematic diagram of the first layer of the vertical lifting system and the safety wind resistance system of the present application.

[0011] Figure 4 is a top view structural schematic diagram of the track support beam, the ring-shaped track and the wind resistance support of the present application.

[0012] Explanation of reference numerals: 1. Circular horizontal hoisting system; 11. Track support beam; 12. Column; 13. Circular track; 15. Electric hoist; 16. Track hook; 2. Safety wind resistance system; 21. Wind resistance electric hoist; 22. Fixed base; 23. Reversing base; 24. Cable wind rope; 26. Beam; 3. Vertical hoisting system; 31. Steel frame; 32. Steel wire rope electric hoist; 33. Fixed pulley; 34. Power steel wire rope; 35. Hook; 5. Unit slab. DETAILED DESCRIPTION

[0013] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0014] In the description of the present application, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly and specifically limited.

[0015] Reference Figures 1-4 As shown in the drawings, a safety hoisting device for prefabricated components of a super high-rise building is provided, which includes a circular horizontal hoisting system 1 arranged at a working layer and used for horizontal transportation of unit slabs 5. The circular horizontal hoisting system 1 includes a track support beam 11 fixed to a structure of the working layer, a circular track 13 installed below the track support beam 11, an electric hoist 15 movably suspended on the circular track 13, and a track hook 16 connected to the lower portion of the electric hoist 15. The track surface of the circular track 13 is provided with a rack, and the gear train of the traveling wheels of the electric hoist 15 includes a gear engaged with the rack.

[0016] Specifically, the track support beam 11 is usually made of large I-beams or H-beams. Its installation position and spacing must ensure that it can withstand the combined action of the ring track, electric hoist, unit panels and wind loads. It is rigidly connected to the embedded parts of the roof structure (such as the pergola beam) through high-strength bolts to form a stable load-bearing foundation. Furthermore, the ring track 13 in this case is preferably made of heavy-duty crane track steel. Its ring path is designed according to the outline of the building facade and is arranged inside the parapet wall so that the track hook 16 can smoothly deliver the panel to the installation position. At the same time, the track interface needs to be ground flat to ensure the smooth movement of the electric hoist 15. The path of the ring track 13 needs to be checked for collisions using BIM technology (existing technology) to ensure that it does not conflict with the roof equipment and structural components. Its radius of curvature needs to be greater than the minimum turning radius allowed by the electric hoist traveling mechanism.

[0017] Furthermore, the installation position and spacing of the track support beam 11 need to be mechanically calculated according to the "Steel Structure Design Standard" to ensure that under the most unfavorable working conditions (such as simultaneously bearing the self-weight of the circular track, the load of the electric hoist and the largest weight unit plate, as well as the local wind load that occurs once in recent years), its deflection deformation value is less than L / 400 (L is the span), and its strength and stability meet the requirements.

[0018] In one embodiment, the electric hoist 15 is selected as a model with dual-speed operation function to achieve rapid long-distance movement and precise fine-tuning positioning. The track hook 16 can be a hook that can rotate 360°, which facilitates small angle adjustments to the plate during installation.

[0019] In one embodiment, the rack is laid parallel to the web or lower flange of the annular track 13 by means of high-strength bolts (the high-strength bolt set should be pre-tightened according to the design requirements, and tightened and quality inspected using a torque wrench or torque-shear wrench to ensure the rigidity and reliability of the connection node) or welding. In the traveling mechanism of the electric hoist 15, in addition to the conventional load-bearing traveling wheels, a set of gears driven by a motor is integrated. Under the action of a spring or hydraulic device, the gears always maintain a constant meshing pressure with the rack, thereby eliminating the fatal safety hazards of "traveling wheels spinning freely, slipping, or even being blown away by the wind" that may occur in traditional friction drive electric hoists 15 under severe weather conditions such as strong winds, rain, and snow. Moreover, the gear meshing transmission has no slippage, and the positioning accuracy can reach the millimeter level, which greatly facilitates the final placement and installation of the unit modules, improves the installation quality and efficiency. Furthermore, in the power-off state, the meshing of the gear and the rack itself has a certain self-locking ability, providing additional safety assurance.

[0020] Furthermore, the drive gear integrated into the traveling mechanism of the electric hoist 15 is driven by a squirrel-cage motor with a built-in brake via a reducer. This motor is independently controlled from the main lifting motor of the electric hoist 15, but can be operated by the same remote control. Meanwhile, a constant meshing pressure is provided by a disc spring assembly, which allows for slight unevenness in the track and automatically compensates for wear on the gear teeth, always maintaining a tight mesh without gaps. In addition to the self-locking meshing, the traveling mechanism of the electric hoist 15 is also equipped with a normally closed brake (not shown in the figure), which can lock immediately when the power is cut off or a stop signal is received, forming multiple safety protections.

[0021] A vertical hoisting system 3 is installed above the working level, with its power wire rope 34 extending downwards to lift the unit panel 5. The vertical hoisting system 3 includes a steel frame 31 leveled and fixed to the roof by steel frame legs 36, a wire rope electric hoist 32 installed on the steel frame 31, a fixed pulley 33 installed at the structural inflection point, a power wire rope 34 with one end wound around the wire rope electric hoist 32 and the other end passing over the fixed pulley 33 and connected to a hook 35; the tail of the steel frame 31 is provided with a counterweight and / or a drag rope connected to the floor structure.

[0022] Specifically, the main body of the steel frame 31 is constructed by welding steel sections into a lattice or truss structure, which has extremely high bending and torsional stiffness. The ends of the steel frame legs 36 are equipped with large steel plates to distribute the load and adjustable bolts for precise adjustment of the level of the entire steel frame. This is a prerequisite for ensuring the normal operation of the wire rope electric hoist 32 and preventing the wire rope from derailing. At the same time, the weight of the counterweight block (such as a concrete block or steel ingot, not shown in the figure) set at the tail needs to be calculated, and the overturning safety factor should not be less than 1.5. The towing rope should be made of wire rope, with one end connected to the tail of the steel frame and the other end connected to the roof embedded parts through turnbuckles, forming a double insurance. This allows the tower crane, a core resource, to be used for the hoisting of other building materials, optimizing the overall construction process and shortening the total construction period.

[0023] The wind-resistant safety system 2, located on the ground floor, includes a wind-resistant electric hoist 21, a guy rope 24, and a spreader beam 26. The wind-resistant electric hoist 21 is mounted on a fixed base 22. One end of the guy rope 24 is wound around the wind-resistant electric hoist 21, and the other end is guided via a reversing base 23 and connected to a fixed point on the annular horizontal hoisting system 1. The spreader beam 26 is slidably connected to the guy rope 24 and is used to hold and constrain the unit plate 5 during the lifting process, allowing it to move along the path of the guy rope 24. The wind-resistant electric hoist 21 in the wind-resistant safety system 2 is communicatively connected to or interlocked with the wire rope electric hoist 32 of the vertical hoisting system 3. The wind-resistant electric hoist 21 dynamically adjusts the release speed of the guy rope 24 according to the lifting speed of the wire rope electric hoist 32 to maintain its tension.

[0024] In one embodiment, to address the issue that the wind-resistant guy rope relies entirely on the operator's visual observation and experience, this invention installs an encoder on the main motor of the wire rope electric hoist 32 to collect the motor speed in real time and accurately convert it into the actual lifting speed of the hook (V_lift). A tension sensor is installed at an appropriate location on the guy rope 24 (e.g., near the end of the wind-resistant electric hoist) to monitor the tension value (F_tension) of the guy rope in real time. A programmable logic controller (PLC) or dedicated industrial controller serves as the core processing unit. It receives real-time data from the encoder and tension sensor and compares it with an internally preset ideal safety value (e.g., the tension setpoint F_set). The controller does not simply issue "start / stop" commands, but uses advanced control algorithms such as PID (proportional-integral-derivative) to perform high-speed calculations and generate a precise control signal. This signal is sent to the frequency converter driving the wind-resistant electric hoist 21, thereby dynamically and linearly adjusting the speed and output torque of the wind-resistant electric hoist motor. Furthermore, through the rapid response of the proportional term to instantaneous deviations, the ability of the integral term to eliminate historical accumulated deviations, and the proactive suppression of deviation change trends by the derivative term, this control system can effectively suppress external force (such as gusts of wind) interference and ensure that the guy rope 24 maintains a constant optimal tension during the lifting process, thus achieving safe and stable synchronous lifting operations.

[0025] Specifically, the fixed base 22 is a rigid welded frame with anchor bolt holes at the bottom, which can firmly install the wind-resistant electric hoist 21 on the solid ground floor, avoiding the need to pour a second concrete foundation on the ground and achieving rapid deployment. The reversing base 23 is a sturdy box with high-strength alloy steel pulleys inside. Its function is to smoothly change the direction of the guy rope 24 and safely transfer the huge tension to the foundation structure (such as the basement roof).

[0026] Both ends of the carrying beam 26 are equipped with pulley blocks, through which the guy rope 24 passes, forming a rolling connection between the carrying beam 26 and the guy rope 24. The contact surface between the carrying beam 26 and the unit plate 5 is covered with a soft material. The pulley blocks on the carrying beam 26 are fitted with deep groove ball bearings to ensure smooth rolling. The guy rope 24 passes through the pulley grooves, allowing the carrying beam 26 to slide extremely smoothly along the guy rope trajectory with minimal friction.

[0027] Working Principle: The working principle of the hoisting device of this invention lies in the construction of an intelligent collaborative operation system: During operation, the safety wind-resistant system 2, located on the ground, first suspends the unit plate 5 through its spreader beam 26 and connects with the hook of the vertical hoisting system 3, forming a linkage starting point of "ground constraint - vertical lifting"; then the lifting process is initiated, with the vertical hoisting system 3 providing the main lifting power, while the safety wind-resistant system 2, through its intelligent interlock controller, monitors the lifting speed and guy rope tension in real time, and dynamically adjusts the release speed of the wind-resistant electric hoist, so that the unit plate 5 is under the rigid constraint of the spreader beam 26. Like rising smoothly along an invisible "aerial track" (i.e., a taut guy rope), this process completely eliminates the risk of swaying caused by high-altitude winds. After the panel arrives at the working level, a hook-changing operation is performed to transfer it to the circular horizontal hoisting system 1. Finally, the electric hoist 15 of the system runs on the circular track 16. With the anti-slip and precise positioning capabilities provided by its gear-rack meshing transmission, the unit panel 5 is horizontally and precisely transported to the designed position on the building facade for installation. This completes the entire process of mechanized and automated operation from ground lifting, safe aerial lifting, to precise high-altitude positioning.

[0028] A method for safely hoisting precast components includes the following steps: S1: Fix the unit plate 5 to the spreader beam 26, and connect the top of the unit plate 5 to the hook of the vertical hoisting system 3; S2: Operate the vertical hoisting system 3 to lift the unit plate 5, and at the same time operate the wind-resistant electric hoist 21 of the safety wind-resistant system 2 to release the guy rope 24, so that the unit plate 5 is lifted to the working level along the track of the guy rope 24 under the constraint of the spreader beam 26. S3: At the working level, change the hook of unit plate 5 from vertical hoisting system 3 to ring horizontal hoisting system 1; S4: Operate the circular horizontal hoisting system 1 to horizontally transport the unit panel 5 to the installation position for installation.

[0029] In step S1, when fixing, a special lifting sling that has been certified by tensile testing must be used. The winding method should ensure the stability of the center of gravity of the unit plate 5. Corner guards and pads should be added at the contact points between the lifting sling and the spreader beam 26 and the plate to prevent sharp edges from cutting the lifting sling.

[0030] The specific process of "synchronous release" in step S2 is as follows: the tension of the guy rope 24 or the load of the wire rope electric hoist 32 is monitored in real time by the control system, and the release speed of the wind-resistant electric hoist 21 is controlled based on the monitoring value feedback.

[0031] In step S2, a trial lift must be conducted before the formal lifting. This involves lifting the panel 200mm off the ground and keeping it still for 5-10 minutes to check the working status of all systems (especially the intelligent interlocking system), whether there are any abnormal deformations in the structure, and whether the tension of the guy ropes 24 is stable. Only after confirming that everything is in order can the formal lifting proceed.

[0032] In step S3, the hook replacement operation must be carried out on a temporary protective platform set up on the working level. The operator must wear a double hook safety belt and must follow the principle of 'hook first, then unhook', that is, only after ensuring that the track hook 16 of the ring horizontal system is reliably under force can the electric hoist hook 35 of the vertical system be released.

[0033] Specifically, to achieve a smooth hook-changing process, that is, to achieve a hook-changing process with "zero impact, zero swaying, and zero manual intervention at high altitudes," this embodiment of the invention achieves this through the following steps: Control the track hook 16 to approach and align with the hook 35, ensuring the gap between them is ≤ 5 mm and the horizontal misalignment is ≤ 3 mm before proceeding to the next step. At this point, the vertical hook 35 is still 100% loaded, the track hook 16 is unloaded, and the tension F is read by the PLC and compared with the preset m·g. The next step is allowed only if the error is ≤ 1%, to prevent "unhooking under load". Then the hook 35 actively lowers slightly by Δz (e.g., 0.5 mm), causing the rope tension to decrease by ΔF, thus "unloading" in advance; the active slight decrease ΔF can be selected according to the different weights of the unit plate 5, for example, ΔF can be 1~5% of m·g, without any limitation here; Next, the double hooks work together to apply load, with hook 35 continuing to descend slightly while track hook 16 rises synchronously, forming a "load transfer ramp." At this point, the swing angle θ can be monitored in real time; if |θ|>0.3°, immediately pause and retract 1-2 mm to eliminate impact. Finally, the hook is released under zero load. The criterion is that the tension F ≤ 2% m·g and lasts for 0.5 s. At this time, the electromagnetic lock of hook 35 is de-energized and rotates 90° to completely disengage. Then the circular trolley accelerates to 0.2 m / s and leaves the transition zone, and the hook change is completed.

[0034] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A safety hoisting device for prefabricated components of super high-rise buildings, characterized in that, include: A ring-shaped horizontal hoisting system (1) is installed on the working level for the horizontal transport of unit panels (5); A vertical hoisting system (3) is installed above the working layer, with its power wire rope (34) extending downwards to lift the unit plate (5). The safety wind-resistant system (2) is set on the ground floor and includes a wind-resistant electric hoist (21), a guy rope (24), and a spreader beam (26). The wind-resistant electric hoist (21) is installed on a fixed base (22). One end of the guy rope (24) is wound around the wind-resistant electric hoist (21), and the other end is guided by a reversing base (23) and connected to a fixed point on the annular horizontal hoisting system (1). The spreader beam (26) is slidably connected to the guy rope (24) and is used to hold and constrain the unit plate (5) during the lifting process, so that it moves along the path of the guy rope (24).

2. The safety hoisting device for prefabricated components of super high-rise buildings according to claim 1, characterized in that, The annular horizontal hoisting system (1) includes a track support beam (11) fixed to the working layer structure, an annular track (13) installed below the track support beam (11), an electric hoist (15) movably suspended on the annular track (13), and a track hook (16) connected below the electric hoist (15).

3. A safety hoisting device for prefabricated components of super high-rise buildings according to claim 2, characterized in that, The annular track (13) has a rack on its track surface, and the electric hoist (15) has a gear in its traveling wheel system that meshes with the rack.

4. A safety hoisting device for prefabricated components of super high-rise buildings according to claim 1, characterized in that, The vertical hoisting system (3) includes a steel frame (31) leveled and fixed to the roof by steel frame legs (36), a wire rope electric hoist (32) installed on the steel frame (31), a fixed pulley (33) installed at the structural inflection point, and a power wire rope (34) with one end wound around the wire rope electric hoist (32) and the other end passing around the fixed pulley (33) and connected to a hook (35).

5. A safety hoisting device for prefabricated components of super high-rise buildings according to claim 1, characterized in that, The wind-resistant electric hoist (21) in the safety wind-resistant system (2) is connected or interlocked with the wire rope electric hoist (32) of the vertical hoisting system (3). The wind-resistant electric hoist (21) dynamically adjusts the release speed of the guy rope (24) according to the lifting speed of the wire rope electric hoist (32) to maintain its tension.

6. A safety hoisting device for prefabricated components of super high-rise buildings according to claim 1, characterized in that, The two ends of the spreader beam (26) are provided with pulley blocks, and the guy rope (24) passes through the pulley blocks, so that the spreader beam (26) and the guy rope (24) form a rolling connection.

7. A safety hoisting device for prefabricated components of super high-rise buildings according to claim 1, characterized in that, The contact surface between the spreader beam (26) and the unit plate (5) is covered with a soft material.

8. A safety hoisting device for prefabricated components of super high-rise buildings according to claim 1, characterized in that, The steel frame (31) is equipped with a counterweight and / or a towing rope connected to the floor structure at its tail.

9. A method for safely hoisting prefabricated components using the device described in claim 1, characterized in that, Includes the following steps: S1: Fix the unit plate (5) to the spreader beam (26) and connect the top of the unit plate (5) to the hook of the vertical hoisting system (3); S2: Operate the vertical hoisting system (3) to lift the unit plate (5), and at the same time operate the wind-resistant electric hoist (21) of the safety wind-resistant system (2) to release the guy rope (24) synchronously, so that the unit plate (5) is lifted to the working layer along the track of the guy rope (24) under the constraint of the spreader beam (26). S3: At the working level, the unit plate (5) is changed from the vertical hoisting system (3) to the annular horizontal hoisting system (1); S4: Operate the ring-shaped horizontal hoisting system (1) to transport the unit plate (5) horizontally to the installation position for installation.

10. The method for safe hoisting of precast components according to claim 9, characterized in that, The specific process of "synchronous release" in step S2 is as follows: the tension of the guy rope (24) or the load of the wire rope electric hoist (32) is monitored in real time by the control system, and the release speed of the wind-resistant electric hoist (21) is controlled based on the monitoring value feedback.

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