Self-climbing heavy-load discharging platform and steel wire rope force measurement and active regulation and control method

Abstract

The invention relates to the field of engineering safety control, and discloses a self-climbing heavy-load discharging platform and a steel wire rope force measurement and active regulation and control method.The self-climbing heavy-load discharging platform comprises a climbing guide rail and a discharging platform frame body, a plurality of sliding blocks are slidably connected to one side of the climbing guide rail, and the discharging platform frame body is fixedly connected to one end of one sliding block; the climbing guide rail is installed on the outer side of the main body structure through a plurality of overturn-preventing guide assemblies, a safety rope is installed on the outer side of a main beam of the discharging platform frame body and connected with the output end of a winch, and the winch is installed on a main body structure floor located on the upper layer of the discharging platform frame body. Through the combined use of the climbing guide rail, the anti-overturning guide assembly and the telescopic rod, self-climbing of the discharging platform without the help of hoisting equipment is achieved, the stability and safety of the self-climbing discharging platform under the heavy load condition are effectively enhanced, the load bearing condition of the discharging platform is monitored in real time through steel wire rope force measurement and an active regulation and control system, and the safety of the discharging platform is improved. And the construction safety is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering safety control, in particular to a self-climbing heavy-load unloading platform, a wire rope force measurement and an active control method. Background Art

[0002] The unloading platform is a temporary transfer station for materials. When in use, steel pipes, formwork, fasteners, square timber and other materials can be transported from the building structure to the unloading platform for packaging, and then hoisted to the required place by a tower crane; materials can also be hoisted to the unloading platform by a tower crane and then transported to the inside of the building structure.

[0003] Every time the unloading platform is moved, it needs to be hoisted by a tower crane and installed and dismantled between floors. The turnover process is cumbersome, not only time-consuming and labor-intensive, but also poses a great safety hazard.

[0004] In addition, existing unloading platforms generally do not have a wire rope force monitoring system. Because it is impossible to accurately know the load conditions of the unloading platform, the design of the unloading platform is generally conservative. Also for the convenience of tower crane turnover, most of the existing unloading platforms are designed to be relatively light and have a small load-bearing capacity. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention provides a self-climbing heavy-load unloading platform, a wire rope force measurement and an active control method, which solves the main problems of the existing unloading platform under complex load conditions, such as wire rope overloading and platform instability, inability to self-climb and insufficient carrying capacity.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a self-climbing heavy-load unloading platform, including a climbing guide rail and a unloading platform frame, one side of the climbing guide rail is slidably connected with a plurality of sliders, one end of one of the sliders is fixedly connected with the unloading platform frame, the bottom of the unloading platform frame is bolted with an inclined support frame, the climbing guide rail is installed on the outside of the main structure through a plurality of anti-overturning guide components, the main beam of the unloading platform frame is connected with a plurality of steel ropes, and the plurality of steel ropes are respectively connected to the main structure in a fixed state, and the inner wall of the climbing guide rail is provided with a stabilizing component.

[0007] Preferably, a safety rope is installed on the outside of the main beam of the unloading platform frame, and the safety rope is connected to the output end of the winch, and the winch is installed on the main structure floor located on the upper layer of the unloading platform frame.

[0008] Preferably, the anti-overturning guide assembly includes a steel structure support, which is bolted to the top of the main structure floor through reserved holes, a lifting and anti-falling steel beam is installed at the front end of the steel structure support, an anti-tilt steel beam is arranged at one end of the steel structure support, an anti-tilt guide wheel is installed at one end of the anti-tilt steel beam, and a plurality of the anti-tilt guide wheels are attached to the outer wall of the climbing guide rail.

[0009] Preferably, the stabilizing assembly includes a telescopic rod, which is slidably connected to the inner wall of the main beam of the unloading platform frame. When the unloading platform is in a climbing state, the telescopic rod retracts into the inside of the main beam of the unloading platform frame. When the unloading platform is in a fixed state, the two telescopic rods are extended from the inside of the main beam of the unloading platform frame, and the front end of the telescopic rod is fixedly connected to an anchor support. The top of the unloading platform frame is rotatably connected to a flap at one end close to the main structure.

[0010] Preferably, the anchor support is fixedly installed on the top of the main structure floor.

[0011] A method for measuring force and actively regulating a wire rope comprises the following steps: S1. The overall force measurement and control is divided into the experimental stage and the construction stage; S2. During the experimental phase, the total load of the unloading platform is first calculated, including the platform's deadweight, construction live load and stockpile load, of which the stockpile load is a variable load; secondly, the tension of the outer and inner steel wire ropes of the unloading platform is calculated based on the total load of the unloading platform.

[0012] S3. During operation, a dynamometer is installed on each wire rope. During the experimental stage, the load is gradually increased to the unloading platform frame by loading the stockpile load in stages; S4. During the experimental stage, the stockpile load is loaded step by step until the tension of the outer wire rope reaches the maximum load-bearing capacity, then the stockpile loading is stopped and it is confirmed whether the inner wire rope can independently bear all the loads. If it can, the loading is continued until the inner wire rope reaches the maximum load-bearing capacity, and the maximum tension limits of the outer and inner wire ropes and their corresponding maximum stockpile load limits are recorded; S5. During the construction phase, the force of the unloading platform frame is calculated by using a dynamometer on each wire rope to obtain the tension of the outer and inner wire ropes, and the tension of the wire ropes is controlled within the allowable value range of the maximum tension limit, thereby ensuring that the unloading platform is not overloaded; S6. During the construction phase, when the tension of the wire rope exceeds the maximum tension limit of the wire rope measured in the experimental phase, it means that the stockpile load has exceeded the maximum limit, and the winch is automatically started to adjust the load of the platform through the safety rope.

[0013] Preferably, the calculation formula of the load is: ; in, is the total load of the platform, For the platform's own weight, For construction live load, For stockpile load.

[0014] Preferably, the tension of the outer steel wire rope and the inner steel wire rope is calculated by the following formulas: ; in, is the angle between the outer wire rope and the main beam of the unloading platform, is the angle between the inner wire rope and the main beam of the unloading platform, L is the distance from the outer wire rope hanging point of the unloading platform to the supporting point of the main structure, and a is the distance from the inner wire rope hanging point of the unloading platform to the supporting point of the main structure.

[0015] Preferably, the active control method monitors the real-time tension data of the four steel ropes through the Internet of Things technology and sets a control limit. When the tension of any steel rope exceeds the control limit, the winch is automatically started and the safety rope is tightened.

[0016] The present invention provides a method for measuring the force and actively regulating the wire rope of a self-climbing heavy-load unloading platform. It has the following beneficial effects: 1. The present invention effectively enhances the stability and safety of the unloading platform under heavy load conditions by combining the anti-overturning guide assembly with the telescopic rod. Compared with the single anti-overturning design in the prior art, the multiple support and adjustment mechanisms of the present invention can better cope with complex loads in different operating environments and avoid the tilt and imbalance of the platform during dynamic operation.

[0017] 2. The present invention provides precise load control by real-time monitoring of the wire rope tension and automatically adjusting the platform load. Compared with the prior art solutions that rely only on manual monitoring or simple mechanical control, it reduces human errors and improves the safety and operating efficiency of the platform.

[0018] 3. The present invention uses the Internet of Things technology to monitor the tension data and set an automatic response mechanism. When the wire rope tension exceeds the set safety limit, the winch is automatically started and the safety rope is adjusted. Compared with the traditional manual intervention or basic alarm system, this method can respond immediately and make automatic adjustments, significantly improving the platform's ability to cope with complex working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the fixed state architecture of the unloading platform of the present invention; Figure 2 This is a schematic diagram of the unloading platform of the present invention in a climbing state; Figure 3It is a schematic diagram of the top view of the anti-overturning guide assembly of the present invention; Figure 4 It is a schematic diagram of the side structure of the anti-overturning guide assembly of the present invention; Figure 5 It is a schematic diagram of the top view of the unloading platform of the present invention; Figure 6 It is a schematic diagram of fixing the telescopic rod structure of the present invention; Figure 7 It is a schematic diagram of the method steps of the present invention.

[0020] Among them, 1. Climbing guide rail; 2. Slider; 3. Unloading platform frame; 4. Inclined support frame; 5. Steel wire rope; 6. Winch; 7. Safety rope; 8. Anti-overturning guide assembly; 9. Telescopic rod; 10. Anchor support; 11. Flap; 801, lifting anti-fall steel beam; 802, anti-tilt steel beam; 806, anti-tilt guide wheel; 807, steel structure support; 12. Main structure. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Please see attached Figure 1 -Attached Figure 2 An embodiment of the present invention provides a self-climbing heavy-load unloading platform, including a climbing guide rail 1 and a main structure 12. A plurality of sliders 2 are slidably connected to one side of the climbing guide rail 1, one end of one of the sliders 2 is fixedly connected to a unloading platform frame 3, an inclined support frame 4 is bolted to the bottom of the unloading platform frame 3, the climbing guide rail 1 is installed on the outside of the main structure 12 through a plurality of anti-overturning guide components 8, a plurality of steel wire ropes 5 are connected to the main beam of the unloading platform frame 3, and the plurality of steel wire ropes 5 are respectively connected to the main structure 12 in a fixed state, and a stabilizing component is provided on the inner wall of the climbing guide rail 1.

[0023] Specifically, the self-climbing heavy-load unloading platform includes a climbing guide rail 1 and an unloading platform frame 3. The climbing guide rail 1 is composed of guide rail bars, which support the unloading platform frame 3 to rise and fall at different heights. One side of the climbing guide rail 1 is slidably connected to a plurality of sliders 2, which are in contact with the climbing guide rail 1 and can slide on the guide rail, driving the unloading platform frame 3 to move along the guide rail direction. One end of the slider 2 is fixedly connected to the unloading platform frame 3, and a motor is arranged inside the slider 2. The motor drives the slider to drive the unloading platform frame 3 to climb upward along the guide rail, so that the unloading platform frame 3 is lifted and lowered along the climbing guide rail 1 along with the slider 2.

[0024] The climbing guide rail 1 is made of a double component of an I-beam and a square tube. The web of the I-beam is clamped in the anti-tilt guide wheel 806 to play a limiting role, and the square tube serves as a track for the slider 2 to move.

[0025] The bottom of the unloading platform frame 3 is bolted with an inclined support frame 4. The inclined support frame 4 is fixed to the unloading platform frame 3 by bolts or other fasteners to provide necessary support to prevent the unloading platform frame 3 from tipping over during loading. The inclined support frame 4 is designed to have a certain tilt angle to effectively distribute the gravity of the pile, reduce the risk of platform tilting, and optimize the force of the platform.

[0026] The climbing guide rail 1 is installed on the outside of the main structure 12 through a plurality of anti-overturning guide components 8. The anti-overturning guide components 8 are designed to have elasticity and guiding functions, which can limit the lateral movement of the unloading platform frame 3 during the lifting process to prevent the platform from tilting or overturning, especially under heavy load conditions. The anti-overturning guide components 8 cooperate with the climbing guide rail 1 and the unloading platform frame 3 to stabilize the operation of the platform.

[0027] The main beam of the unloading platform frame 3 is connected to a plurality of steel wire ropes 5. The steel wire ropes 5 are used to connect the unloading platform to the main structure when the unloading platform is in a fixed state, and to transfer the load of the unloading platform to the main structure through the steel wire ropes 5, thereby enhancing the load-bearing capacity of the unloading platform, especially when heavy objects are piled. One end of the plurality of steel wire ropes 5 is fixedly connected to the unloading platform frame 3, and the other end is fixedly connected to the main structure 12. The steel wire ropes 5 share the load of the unloading platform through tension, ensuring that the platform will not become unstable or overturn when carrying heavy objects. The number and position of the connection points of the steel wire ropes 5 can be adjusted according to the load requirements of the platform to improve the stability of the platform under any load.

[0028] During specific use, the climbing guide rail 1 cooperates with the slider 2 to make the unloading platform frame 3 rise and fall in the vertical direction. The sliding mechanism of the guide rail system and the slider can adjust the height of the unloading platform and accurately transfer the materials from the platform to the specified position. The inclined support frame 4 optimizes the stress state of the platform by supporting the load and avoids tilting. The configuration of the wire rope 5 enhances the carrying capacity of the platform, especially when heavy objects are piled, to prevent the platform from overturning or becoming unstable. The anti-overturning guide assembly 8 prevents the unloading platform from unnecessary lateral movement or tilting during the lifting process through the guiding effect, keeping the platform stable.

[0029] Please see attached Figure 3 -Attached Figure 4 The anti-overturning guide assembly 8 includes a steel structure support 807, which is bolted to the top of the floor slab of the main structure 12 through a reserved hole. A lifting and anti-falling steel beam 801 is installed at the front end of the steel structure support 807, and an anti-tilt steel beam 802 is arranged at one end of the steel structure support 807. An anti-tilt guide wheel 806 is installed at one end of the anti-tilt steel beam 802, and multiple anti-tilt guide wheels 806 are attached to the outer wall of the climbing guide rail 1.

[0030] Specifically, the anti-overturning guide assembly 8 includes a steel structure support 807, which is installed on the top of the main structure 12 floor by bolting through a reserved hole, serving as the basis for supporting the entire anti-overturning system. The steel structure support 807 is made of high-strength steel to ensure its stability and durability under heavy loads. The steel structure support 807 is fixed to the main structure floor by bolts.

[0031] A lifting anti-falling steel beam 801 is installed at the front end of the steel structure support 807, and its main function is to connect the anti-falling rod to prevent the unloading platform from accidentally falling during the climbing process. The lifting anti-falling steel beam 801 is fixed to the steel structure support 807 by bolts, which is easy to disassemble and maintain.

[0032] An anti-tilt steel beam 802 is provided at one end of the steel structure support 807. The anti-tilt steel beam 802 is mainly used to prevent the unloading platform from tilting or overturning. An anti-tilt guide wheel 806 is installed at one end of the anti-tilt steel beam 802. The inner side of the anti-tilt guide wheel 806 is closely attached to the outer wall of the I-beam web of the climbing guide rail 1. The climbing guide rail 1 extends along the vertical limit track formed by the multiple anti-tilt guide wheels 806, which guides the unloading platform to run along the correct track, ensures that the unloading platform remains horizontal during the lifting process, and prevents the platform from deflecting due to unbalanced load or external force.

[0033] Specifically, during the implementation process, the anti-tilt guide wheels 806 clamp the climbing guide rail 1, and a group of two anti-tilt guide wheels 806 are installed on a steel structure support 807, and two steel structure supports 807 are symmetrically installed on each layer. The upper and lower groups of anti-tilt guide wheels 806 can limit a climbing guide rail 1 to prevent the climbing guide rail 1 from deviating or overturning during the upward climbing process.

[0034] Please see attached Figure 5 -Attached Figure 6 The stabilizing assembly includes a telescopic rod 9, which is slidably connected to the inner wall of the main beam of the unloading platform frame 3. When the unloading platform is in a climbing state, the telescopic rod 9 is retracted to the inside of the main beam of the unloading platform frame 3. When the unloading platform is in a fixed state, the two telescopic rods 9 are extended from the inside of the main beam of the unloading platform frame 3, and the front end of the telescopic rod 9 is fixedly connected to the anchor support 10. The top of the unloading platform frame 3 is rotatably connected to one end of the main structure. The anchor support 10 is fixedly installed on the top of the main structure 12.

[0035] Specifically, the stabilizing assembly includes at least two telescopic rods 9, and the sliding connection of the telescopic rods 9 can be realized by sliding bearings, guide rails or other appropriate structures, allowing the telescopic rods 9 to be extended and retracted within a certain range, thereby realizing the fixation and separation of the main beam of the unloading platform frame 3 and the floor of the main structure 12. The telescopic rods 9 are extended and fixedly connected to the anchor support only when the unloading platform is fixed; when the unloading platform climbs, the telescopic rods 9 will be disengaged from the anchor support and retracted into the main beam, thereby avoiding the collision of the telescopic rods 9 and the main structure 12.

[0036] As an adjustable supporting structure, the telescopic rod 9 provides additional supporting force when the unloading platform frame 3 carries heavy objects, so as to prevent the unloading platform from tipping over or becoming unstable. The telescopic rod 9 is electrically driven to rotate the internal screw rod, thereby realizing the extension and retraction functions. When working, the telescopic rod 9 automatically adjusts its length according to the working state (climbing or fixed) of the unloading platform, thereby helping the unloading platform frame 3 to achieve force conversion.

[0037] When the unloading platform is in a fixed state, the front ends of the two telescopic rods 9 are fixedly connected to the anchor support 10. The anchor support 10 is usually made of steel or high-strength alloy material and has a high load-bearing capacity. On the one hand, the anchor support 10 is connected to the unloading platform frame 3 through the telescopic rod 9, and on the other hand, it is installed on the top of the floor of the main structure 12 to stably fix the unloading platform frame 3 on the main structure 12. The anchor support 10 can stably adjust the supporting force according to the load condition of the unloading platform frame to prevent the platform from excessive up and down vibration or lateral deviation.

[0038] The top of the unloading platform frame 3 is rotatably connected to one end of the main structure. The flap 11 is usually connected to the top of the unloading platform frame 3 near the main structure through a hinge or similar device, allowing the flap to rotate 180 degrees with the short side of the end of the unloading platform near the main structure as the axis. In particular, when it is necessary to unload materials from the platform, the flap 11 can provide support or serve as a shield to prevent the materials from sliding out. The flap 11 has two states during use. When the unloading platform climbs, the flap 11 is flipped up and placed on the unloading platform. When the unloading platform is working, the flap 11 is flipped down and placed on the floor of the main structure. The length of the flap 11 cannot be less than the width of the unloading platform, and the width of the flap 11 cannot be less than the distance between the front end of the unloading platform and the main structure, ensuring that the flap can be placed on the floor of the main structure without a gap, thereby achieving full closure between the unloading platform and the main structure.

[0039] The anchor support 10 is installed on the top of the floor of the main structure 12 to ensure that the unloading platform frame 3 is firmly connected to the main structure 12 when the unloading platform is fixed, which plays a role in strengthening the stability of the platform and optimizing the force distribution. The anchor support 10 and the main structure 12 can be fixed by bolts, welding or other conventional fastening means to ensure that they will not loosen or fall off during work.

[0040] Please see attached Figure 2 A safety rope 7 is installed on the outside of the main beam of the unloading platform frame 3, and the safety rope 7 is connected to the output end of the winch 6. The winch 6 is installed on the floor slab of the main structure 12 located on the upper layer of the unloading platform frame 3.

[0041] Specifically, a winch 6 is installed on the main structure 12 floor of the upper layer of the unloading platform frame 3. The winch 6 is an additional control mechanism in an emergency situation, which is responsible for providing power to drive the tightening of the safety rope 7 to prevent the unloading platform frame 3 from overturning when all the steel wire ropes 5 fail. The winch 6 adopts an electric drive mode and has the function of real-time response and rapid adjustment of the safety rope tension.

[0042] Under normal circumstances, the winch does not work and the safety rope is in a relaxed state. An active control switch is added to the winch. The active control switch needs to be connected to the Internet of Things to monitor and transmit the tension data of the four steel ropes in real time. Once it is identified that the actual tension value on the steel rope is greater than the maximum control limit measured by the experiment, the winch switch is automatically turned on to tighten the safety rope to prevent the unloading platform from overturning. Through the cooperation of the winch 6 and the safety rope 7, the unloading platform can cope with sudden emergencies caused by the failure of all steel ropes 5 due to excessive load, ensuring that the material transportation and loading operations during construction have sufficient safety guarantees.

[0043] Please see attached Figure 7 , a wire rope force measurement and active control method, applied to a self-climbing heavy-load unloading platform, comprises the following steps: S1. The overall force measurement and control is divided into the experimental stage and the construction stage; S2. In the experimental stage, the total load of the unloading platform is first calculated, including the platform deadweight, construction live load and stockpile load, of which the stockpile load is a variable load; The load calculation formula is: ; in, is the total load of the platform, For the platform's own weight, For construction live load, For stockpile load.

[0044] Specifically, the purpose of this step is to calculate the total load of the unloading platform according to different load types to ensure that the platform can safely bear various loads during use. The total load of the unloading platform consists of three parts: the deadweight of the platform, the live load of construction, and the stockpile load, of which the stockpile load is a variable load and the other loads are constant values. The design of this formula takes into account the safety of the platform at different construction stages and load conditions. The deadweight and live load of construction are known and fixed, while the stockpile load varies according to actual use. The coefficients 1.3 and 1.5 in the formula are safety factors used to consider load changes, that is, the partial coefficients of permanent loads and variable loads under the ultimate limit state of structural bearing capacity specified in the "Code for Loads on Building Structures", to ensure that the platform can still maintain stability and work safely under maximum load conditions.

[0045] S3. Calculate the stress of the main beam of the unloading platform, obtain the tension of the outer wire rope 5 and the inner wire rope 5, and determine the tension calculation formula of the wire rope 5; The tension of the outer wire rope 5 and the inner wire rope 5 is calculated by the following formulas: ; in, is the angle between the outer wire rope (5) and the main beam of the unloading platform, is the angle between the inner wire rope 5 and the main beam of the unloading platform, L is the distance from the outer wire rope hanging point of the unloading platform to the supporting point of the main structure, and a is the distance from the inner wire rope hanging point of the unloading platform to the supporting point of the main structure.

[0046] Specifically, in this step, the stress of the main beam of the unloading platform needs to be calculated first, and the tension of the outer wire rope 5 and the inner wire rope 5 is obtained according to the stress analysis. These tensions reflect the load conditions borne by the unloading platform during operation, thereby providing basic data for subsequent safety monitoring and active regulation.

[0047] The outer wire rope 5 and the inner wire rope 5 of the unloading platform jointly bear the load on the unloading platform. Under normal working conditions, the outer wire rope 5 is mainly stressed, and the inner wire rope 5 plays a double insurance role. In order to simplify the calculation, the load acts directly on the main beam, and the main beam is simplified to a cantilever simply supported beam with the wire rope hanging point and the supporting point on the building as the support for calculation.

[0048] Through the force analysis of the main beam, it can be obtained that the tension of the wire rope 5 and the total load borne by the unloading platform And the structural arrangement of the platform is related. Usually, the tension of the steel wire rope 5 is determined by the position of the steel wire rope hanging point on the main beam of the unloading platform and the angle and length of the steel wire rope. and They are the angles between the outer and inner wire ropes and the main beam of the unloading platform, respectively. The size of the angle directly affects the tension of the wire rope. The larger the angle, the smaller the tension on the wire rope, so it is necessary to accurately calculate and adjust the angle. Through the force analysis and tension calculation in this step, the specific tension on the outer and inner wire ropes 5 under different load conditions can be determined.

[0049] S4. Install a dynamometer on each wire rope 5. During the experimental stage, the load is gradually increased to the unloading platform frame 3 by loading the stockpile load in stages; The dynamometer will be installed on each steel wire rope 5, and the location is usually selected at the connection point of the steel wire rope or close to the load-bearing part, so as to directly monitor the stress of the steel wire rope under the actual load. At least one dynamometer is installed on each steel wire rope 5 to ensure that the tension of each steel wire rope can be measured in real time, and provide accurate measurement data for subsequent data processing and abnormality detection. Each dynamometer will be connected to the data acquisition system, and the measured tension data will be transmitted to the central monitoring system in real time by wire or wireless means. The data acquisition system can regularly obtain the tension value transmitted by the dynamometer, and process, store and analyze the data. The monitoring system displays the tension data on all steel wire ropes 5 and can alarm according to the set threshold. If the tension of a steel wire rope 5 exceeds the maximum safety limit measured in the experimental stage, the system will issue a warning to remind the operator to check and adjust the platform status to prevent safety problems such as overloading or wire rope breakage. By installing a dynamometer in this step for real-time measurement and monitoring, the stress of each steel wire rope 5 can be monitored in real time, and potential safety hazards can be discovered and corrected in a timely manner. This measure ensures that the unloading platform can maintain a reasonable load distribution during use, avoids overloading or failure of the steel wire rope 5, and thus improves the overall safety and stability of the platform.

[0050] During the experimental phase, the graded loading of the stockpile load was carried out in a step-by-step manner.

[0051] Specifically, the purpose of the graded loading of the stockpile load is to gradually increase the stockpile load on the platform to simulate the stress of the platform wire rope 5 under different load conditions. The loading process is carried out in a certain increment, and each increase in load is a fixed increment ΔPk. This increment can be set according to the design load of the platform and the load capacity of the wire rope.

[0052] The steps for hierarchical loading are as follows: Initially, the stockpile load on the platform is zero or an initial small load; After each loading, record the tension value of each steel wire rope 5 of the platform, and gradually increase the load; During the loading process, the stockpile load Pk is gradually increased, with each increase in load being ΔPk, until the wire rope tension reaches the maximum limit, which means that the stockpile load has reached the maximum limit.

[0053] At the end of each loading stage, the force measurement system will record the tension value on the steel wire rope 5 at this time. These tension data will be stored and correspond to the stage of the applied load, which is convenient for subsequent analysis and comparison. The recorded tension data includes the tension values ​​of the outer steel wire rope 5 and the inner steel wire rope 5. The recorded tension data will be updated in real time in the data acquisition system and marked according to each loading stage. The data acquisition system will regularly store the tension data of each steel wire rope 5 to ensure that the data of all loading stages are accurately recorded.

[0054] At each stage of graded loading, the actual measured tension value of the wire rope 5 will be compared with the theoretical calculated value. The theoretical calculated value is based on the total load of the unloading platform and the tension calculation formula of the wire rope 5 as obtained in step S3, taking into account the force difference and load distribution between the outer and inner wire ropes 5. By comparison, the accuracy of the measurement system under different load conditions is verified.

[0055] Comparison process: The actual tensile force measured at each loading stage is analyzed against the theoretical value calculated based on the load and the wire rope; Calculate the error margin at each stage and evaluate the accuracy of the measurement system; If the error range is within the predetermined allowable range, it means that the working status of the measurement system is as expected, otherwise the measurement system needs to be further calibrated.

[0056] The accuracy of the measurement system can be verified through experiments with graded loading. If the actual measured tension value is highly consistent with the calculated value under different loads, it means that the force measurement system has good accuracy and can accurately reflect the stress conditions of the wire rope 5 under different loads. If there is a large error between the measured value and the calculated value, the measurement system may need to be recalibrated or the installation position may need to be adjusted.

[0057] Through the verification process, it is ensured that the measurement system can accurately monitor the tension of the wire rope 5, ensure the safety of the unloading platform in actual use, and avoid overloading or other unsafe operations.

[0058] S5. During the experimental stage, the stockpile load is loaded step by step until the tension of the outer wire rope 5 reaches the maximum load-bearing capacity, then the stockpile loading is stopped, and it is confirmed whether the inner wire rope can independently bear all the loads. If it can, the loading is continued until the inner wire rope 5 reaches the maximum load-bearing capacity, and the maximum tension limits of the outer and inner wire ropes and their corresponding maximum stockpile load limits are recorded; Specifically, during the step-by-step loading process, as the stockpile load gradually increases, the tension on the outer wire rope 5 will also increase. When the tension of the outer wire rope 5 reaches its maximum load-bearing capacity, the stockpile loading needs to be suspended, and the maximum tension limit of the outer wire rope at this time and the corresponding stockpile load value are recorded.

[0059] After the outer wire rope 5 reaches its maximum load capacity, check whether the inner wire rope 5 can independently bear all loads. The inner wire rope 5 needs to independently bear all loads of the platform, including the platform's own weight, construction loads, and all stockpile loads. In order to ensure that the inner wire rope 5 is not overloaded, it is necessary to monitor its tension in real time, calculate its actual load, and determine whether it can support safely.

[0060] If the inner steel wire rope 5 can independently bear all the loads and its tension does not exceed the maximum load-bearing capacity limit, the stockpile loading can continue. At this time, the graded loading is continued, and the stockpile load is gradually increased until the inner steel wire rope 5 tension reaches its maximum load-bearing capacity.

[0061] When loading continues, the monitoring system will continue to record the tension on the inner steel wire rope 5 in real time. When the tension of the inner steel wire rope 5 reaches the maximum load-bearing capacity, the stacking loading is stopped, and the maximum tension limit of the inner steel wire rope and the corresponding maximum stacking load limit are recorded.

[0062] S6. During the construction phase, the force of the unloading platform frame 3 is calculated by measuring the force of each wire rope 5, and the tension of the outer wire rope 5 and the inner wire rope 5 is obtained; In this step, the most important thing is to ensure that the wire rope 5 does not exceed the maximum tension limit obtained in the experimental stage during the entire stacking process. Through real-time monitoring and data comparison of the tension of the outer and inner wire ropes 5, it is possible to ensure that the platform always operates within the safe load range and prevent structural instability or platform overturning caused by overloading of any wire rope 5.

[0063] During the actual construction process, it is necessary to ensure that the outer steel wire rope 5 does not fail, and the inner steel wire rope 5 plays a role of insurance, thereby preventing the unloading platform from overturning or other safety problems.

[0064] The tension of the outer steel wire rope 5 is monitored by a real-time measurement system. When the measured tension value exceeds the maximum load limit of the steel wire rope 5, the system will automatically issue a warning and stop further increasing the stockpile load.

[0065] S7. During the construction phase, when the tension value of the wire rope 5 exceeds the maximum tension limit of the wire rope measured in the experimental phase, it means that the stockpile load has exceeded the maximum limit, and the winch is automatically started to adjust the load of the platform through the safety rope 7.

[0066] Specifically, during the operation of the unloading platform, the dynamometer installed on each steel wire rope 5 will continuously measure the tension of the steel wire rope in real time and transmit the data to the Internet of Things system. The system connects each dynamometer via a wireless or wired network and uploads the real-time measured data to the control center. The Internet of Things technology can centrally monitor the tension data on the four steel wire ropes 5, making it convenient for operators and monitoring systems to obtain the stress status of the platform at any time.

[0067] In the IoT system, in order to ensure the safety of the platform, it is necessary to set a safety limit for the tension of each steel rope 5. This limit is measured according to the experimental stages S4 and S5. When the tension of any steel rope 5 exceeds this limit, the system will trigger an alarm and take necessary safety measures.

[0068] When the IoT system detects that the tension of any steel wire rope 5 exceeds the preset safety limit, the system will automatically start the winch 6. The function of the winch 6 is to adjust the load on the unloading platform frame 3 by controlling the safety rope 7. The specific operation is as follows: The winch 6 controls one end of the safety rope 7 through the power system, tightens the safety rope, reduces the load of the platform, and shares the excessive tension borne by the wire rope 5.

[0069] By adjusting the safety rope 7, the winch 6 can effectively distribute the load of the platform, preventing any one of the steel wire ropes 5 from being subjected to a tension exceeding its safety limit, thereby ensuring the safety of the platform during use.

[0070] As a safety measure, the safety rope 7 is mainly used to provide additional tension when the tension of the wire rope 5 is too large. The safety rope 7 is connected to the upper structure through the winch 6 on both sides of the platform, and can be tightened or loosened as needed during the use of the platform. By accurately controlling the tension of the safety rope 7, the force of the platform can be effectively adjusted, thereby preventing the platform from overturning due to uneven load or overload.

[0071] When the tension of any wire rope 5 exceeds the safety limit, the IoT system will trigger an automatic alarm and notify the operator to conduct necessary inspections. At the same time, the system will automatically start the winch 6 and adjust the safety rope 7 to ensure that the platform is in a safe state. The system can not only take automatic response measures when the tension exceeds the limit, but also update the tension data of the wire rope 5 in real time to help the operator understand the stress state of the platform in a timely manner.

[0072] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-climbing heavy-load unloading platform, comprising a climbing guide rail (1) and an unloading platform frame (3), characterized in that: A plurality of sliders (2) are slidably connected to one side of the climbing guide rail (1), one end of one of the sliders (2) is fixedly connected to a discharge platform frame (3), an inclined support frame (4) is bolted to the bottom of the discharge platform frame (3), the climbing guide rail (1) is installed on the outside of the main structure (12) via a plurality of anti-overturning guide components (8), a plurality of steel wire ropes (5) are connected to the main beam of the discharge platform frame (3), and the plurality of steel wire ropes (5) are respectively connected to the main structure (12) in a fixed state, and a stabilizing component is provided on the inner wall of the climbing guide rail (1).

2. The self-climbing heavy-load unloading platform according to claim 1 is characterized in that: A safety rope (7) is installed on the outside of the main beam of the unloading platform frame (3), and the safety rope (7) is connected to the output end of the hoist (6). The hoist (6) is installed on the floor slab of the main structure (12) on the upper layer of the unloading platform frame (3).

3. The self-climbing heavy-load unloading platform according to claim 1 is characterized in that: The anti-overturning guide assembly (8) includes a steel structure support (807), and the steel structure support (807) is bolted to the top of the floor of the main structure (12) through a reserved hole. A lifting anti-falling steel beam (801) is installed at the front end of the steel structure support (807), and an anti-tilt steel beam (802) is arranged at one end of the steel structure support (807). An anti-tilt guide wheel (806) is installed at one end of the anti-tilt steel beam (802), and a plurality of anti-tilt guide wheels (806) are attached to the outer wall of the climbing guide rail (1).

4. The self-climbing heavy-load unloading platform according to claim 1 is characterized in that: The stabilizing assembly comprises a telescopic rod (9), wherein the telescopic rod (9) is slidably connected to the inner wall of the main beam of the unloading platform frame (3); when the unloading platform is in a climbing state, the telescopic rod (9) is retracted into the interior of the main beam of the unloading platform frame (3); when the unloading platform is in a fixed state, the two telescopic rods (9) are extended from the interior of the main beam of the unloading platform frame (3), and the front end of the telescopic rod (9) is fixedly connected to an anchor support (10); and a flap (11) is rotatably connected to one end of the top of the unloading platform frame (3) close to the main structure (12).

5. The self-climbing heavy-load unloading platform according to claim 4 is characterized in that: The anchor support (10) is fixedly installed on the top of the floor slab of the main structure (12).

6. A wire rope force measurement and active control method, according to the self-climbing heavy-load unloading platform according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1. The overall force measurement and control is divided into the experimental stage and the construction stage; S2. In the experimental stage, the total load of the unloading platform is first calculated, including the deadweight of the platform, the live load of construction and the stockpile load, of which the stockpile load is a variable load; secondly, the tension of the outer and inner wire ropes of the unloading platform is calculated according to the total load of the unloading platform; S3. During operation, a dynamometer is installed on each wire rope (5). During the experimental stage, the load is gradually increased to the unloading platform frame (3) by loading the stockpile load in stages; S4. During the experimental phase, the stacking load is loaded step by step until the tension of the outer wire rope (5) reaches the maximum load-bearing capacity, then the stacking load is stopped, and it is confirmed whether the inner wire rope can independently bear all the loads. If it can, the loading is continued until the inner wire rope (5) reaches the maximum load-bearing capacity, and the maximum tension limits of the outer and inner wire ropes and their corresponding maximum stacking load limits are recorded; S5. During the construction phase, the force of the unloading platform frame (3) is calculated by a dynamometer on each wire rope (5), and the tension of the outer wire rope (5) and the inner wire rope (5) is obtained, and the wire rope tension is controlled within the allowable value range of the maximum tension limit, thereby ensuring that the unloading platform is not overloaded; S6. During the construction phase, when the tension of the steel wire rope (5) exceeds the maximum tension limit of the steel wire rope measured in the experimental phase, it means that the stockpile load has exceeded the maximum limit, and the winch (6) is automatically started to adjust the load of the platform through the safety rope (7).

7. A wire rope force measurement and active control method according to claim 6, characterized in that: The calculation formula for the load is: ； in, is the total load of the platform, For the platform's own weight, For construction live load, For stockpile load.

8. A wire rope force measurement and active control method according to claim 6, characterized in that: The tension of the outer steel wire rope (5) and the inner steel wire rope (5) are calculated by the following formulas: ； in, is the angle between the outer wire rope (5) and the main beam of the unloading platform, is the angle between the inner steel wire rope (5) and the main beam of the unloading platform, L is the distance from the outer steel wire rope hanging point of the unloading platform to the supporting point of the main structure, and a is the distance from the inner steel wire rope hanging point of the unloading platform to the supporting point of the main structure.

9. A wire rope force measurement and active control method according to claim 6, characterized in that: The active control method monitors the real-time tension data of the four steel wire ropes through the Internet of Things technology and sets a control limit. When the tension of any steel wire rope (5) exceeds the control limit, the winch (6) is automatically started and the safety rope (7) is tightened.

Images