Anti-unbalance-loading construction lifting platform and using method thereof

Abstract

The invention provides an anti-unbalance-loading construction lifting platform and a using method thereof, relates to the technical field of lifting equipment, and solves the problems that in the prior art, in the operation process of a construction lifting platform, the unbalance loading phenomenon easily occurs, once unbalance loading occurs, abrasion of mechanical parts of the lifting platform is accelerated, the platform is likely to incline, operation is unstable, and the service life of the lifting platform is prolonged. And overturning and falling safety accidents are caused. According to the technical scheme, an unbalance load sensing element continuously collects platform load and inclination data and transmits the data to an electrical control system; the central processing unit analyzes data in real time and judges the unbalance loading condition and degree of the platform. If unbalance loading is detected, unbalance loading braking and unbalance loading alarming are started in sequence according to the unbalance loading grade; when the unbalance loading condition occurs, braking, warning, self-locking and leveling measures can be rapidly started, the unbalance loading risk of the platform is reduced to the minimum, the safety of personnel and material transportation is guaranteed, meanwhile, the abnormal loss of equipment caused by unbalance loading is reduced, and the operation stability and reliability of the construction lifting platform are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, and in particular to an anti-eccentric load construction lifting platform and a use method thereof. Background Art

[0002] In recent years, with the accelerated pace of urbanization and the continuous innovation of construction technology, high-rise and super-high-rise buildings have sprung up like mushrooms after rain, and large-scale infrastructure construction projects such as bridges and tunnels have also increased. In these complex construction projects, construction lifting platforms, as key equipment for the vertical transportation of personnel and materials, are increasingly used and carry increasing loads, and the requirements for safety and reliability have also reached unprecedented levels.

[0003] Traditional construction lift platforms are prone to overloading during operation due to factors such as uneven material stacking, irregular personnel distribution, and shifted cargo center of gravity. Once overloading occurs, it not only accelerates the wear of the lift platform's mechanical components and reduces the equipment's service life, but more seriously, it can cause the platform to tilt, become unstable, and even lead to major safety accidents such as overturning and falling, posing a significant threat to the safety of construction workers and the smooth progress of the project. Summary of the Invention

[0004] Therefore, the present invention solves the technical problem in the prior art that during the operation of the construction lifting platform, there is a high risk of overloading due to factors such as uneven material stacking, irregular personnel distribution, and shifted center of gravity of the cargo. Once overloading occurs, it will not only accelerate the wear of the mechanical parts of the lifting platform and reduce the service life of the equipment, but more seriously, it may cause the platform to tilt, unstable operation, and even cause major safety accidents such as overturning and falling, posing a huge threat to the life safety of construction workers and the smooth progress of engineering projects. The present invention provides an anti-overloading construction lifting platform and a method of using the same, which, by virtue of the innovative design and coordinated operation of multiple modules, can level and lock the working platform according to actual working conditions to prevent the platform from overturning and falling, and exhibits significant advantages in terms of construction safety assurance and equipment operation optimization.

[0005] The present invention provides an anti-eccentric loading construction lifting platform, which includes a vertically arranged guide rail frame, on which a working platform is arranged; a lifting device is arranged on the working platform, and a self-locking device is arranged next to the lifting device. The lifting device is used to drive the working platform to rise and fall on the guide rail frame, and the self-locking device is used to self-lock the working platform.

[0006] Furthermore, the lifting device includes a lifting frame, a motor inside the lifting frame, a gear provided on the motor output shaft, the gear meshing with a rack vertically provided on the guide rail frame; the rack is fixed to the guide rail frame; and the working platform is provided on the lifting frame.

[0007] Furthermore, the self-locking device includes a connecting rod, one end of which is rotatably connected to the bottom of the working platform, and the other end is slidably connected to the adjustment plate; an eccentric shaft is fixedly connected to the inner side of the adjustment plate, and the eccentric shaft passes inward through the bottom cross beam of the lifting frame and is connected to the eccentric wheel, and the eccentric wheel is on the side of the rack without teeth.

[0008] Furthermore, a sliding groove is provided on the adjustment plate, and the connecting rod is slidably connected in the sliding groove.

[0009] Furthermore, a pressure sensor is provided at the connection between the connecting rod and the working platform.

[0010] Furthermore, the working platform is provided with an inclination sensor, which is installed at a key position of the working platform frame to monitor the change of the platform's inclination angle in real time.

[0011] Furthermore, the pressure sensor and the inclination sensor are connected to the central processing unit via a data transmission line; the central processing unit can adopt an existing central processing unit, which undertakes the important tasks of receiving, processing and sending various signals in the lifting platform. It will receive signals from various sensors, and then analyze and process these signals according to preset programs and algorithms, and then control the lifting action, speed adjustment, stop position, etc. of the lifting platform; it can also monitor the operating status of the lifting platform in real time. Once an abnormal situation is found, such as overload, excessive tilt angle, etc., it will trigger the corresponding protection mechanism to ensure the safety of equipment and personnel.

[0012] Furthermore, the work platform is equipped with an audible and visual alarm device. The work platform is assembled from multiple sets of platform sections, and sensor pins are configured at the connecting shafts of the platform sections to collect real-time load-bearing pressure data of various parts. High-decibel, high-brightness audible and visual alarm devices are installed in the lifting platform operating room and conspicuous locations on the platform. The moment unbalanced loading occurs, a strong audible and visual signal is immediately emitted to alert the operator and surrounding construction personnel. Visual interface: The operating console is equipped with a high-definition display screen, which dynamically displays real-time information such as the platform's load distribution, degree of unbalanced loading, operating parameters, self-locking and leveling status, allowing operators to intuitively grasp the overall operation of the platform.

[0013] Furthermore, the guide rail frames are provided with two groups, the working platform is connected to the two groups of guide rail frames respectively, and the connection points are provided with self-locking devices.

[0014] The present invention also provides a method for using the anti-eccentric load construction lifting platform, comprising the following steps:

[0015] S1: When the guide rails are grouped together and the working platform is overloaded, the self-locking device is activated and mechanical locking is performed;

[0016] S2: When there are two sets of guide rails, if the work platform is unbalanced to one side, the tilt sensor is used to detect the data. If the unbalanced angle is small, the motor on the guide rail on the lower side of the work platform is controlled to move the work platform on that side upward for leveling.

[0017] When the eccentric load angle is moderate, the motor on the guide rail frame on the higher side of the working platform is controlled to move the working platform on that side downward for leveling. The number of output rotations can be determined through precise pulse input to achieve horizontal posture adjustment of the platform.

[0018] When the eccentric load angle is large, the motors stop operating and the self-locking devices on both guide rails activate, mechanically locking the platform. Once the eccentric load braking and self-locking mechanisms are in effect and the eccentric load is initially under control, the system automatically initiates the self-leveling process. Based on the inclination sensor feedback, the central processing unit controls the motors, gradually leveling the platform. Once the platform is reset, the system automatically releases the self-locking mechanism, resuming normal operation.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. The present invention provides an anti-eccentric loading construction lifting platform and a method for using the same, which adopts a combination of high-precision pressure sensors and inclination sensors. The pressure sensors are deployed at key bearing points at the bottom of the platform, and can keenly capture subtle changes in the bearing pressure at each point; at the same time, the inclination sensors are installed at key positions on the platform frame, and can monitor the inclination angle of the platform in three-dimensional space in real time. The two form a multi-dimensional sensor network, which comprehensively covers the load and inclination status monitoring of the platform. Because the data collected by the sensors is quickly and accurately transmitted to the central processing unit through high-speed data transmission lines or wireless transmission modules, the central processing unit can obtain reliable and comprehensive data, thereby realizing accurate monitoring of the load distribution and inclination status of the platform, and providing a solid data foundation for subsequent system decision-making.

[0021] 2. The present invention provides an anti-eccentric load construction lifting platform and a method for using the same. When the working platform is overloaded, the connecting rod will be pushed to slide on the adjusting plate. When it slides to the end point of the slide groove, the adjusting plate will be pulled to rotate. During the rotation of the adjusting plate, the eccentric wheel will be driven to rotate. In the initial state, one side of the eccentric is in a convex state and the other side is in a straight state. The straight state corresponds to the toothless side of the rack and does not contact it, thereby not affecting the movement of the gear relative to the rack. When the eccentric wheel rotates, the convex shape approaches the rack teeth and contacts the rack, the friction force increases, and the position is limited. After the rack is squeezed, it will also contact the block above the gear. Mechanical friction occurs between the rack and the block, thereby cooperating to lock the working platform for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This invention Figure 1 A magnified view of point A;

[0025] Figure 3 It is a structural schematic diagram of the self-locking device of the present invention;

[0026] Figure 4 This invention Figure 3 Schematic diagram of the inner structure;

[0027] Figure 5 It is a schematic diagram of the eccentric shaft structure of the present invention.

[0028] Description of reference numerals:

[0029] 1. Guide rail frame; 2. Working platform; 3. Connecting rod; 4. Slide; 5. Eccentric shaft; 6. Adjustment plate; 7. Lifting frame; 8. Rack; 9. Eccentric wheel; 10. Gear; 11. Stop block. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] Example 1:

[0032] See also Figure 1-Figure 5 A construction lifting platform with anti-eccentric loading includes a vertically arranged guide rail frame 1, on which a working platform 2 is arranged; a lifting device is arranged on the working platform 2, and a self-locking device is arranged next to the lifting device. The lifting device is used to drive the working platform 2 to rise and fall on the guide rail frame 1, and the self-locking device is used to self-lock the working platform 2.

[0033] In this embodiment, the lifting device includes a lifting frame 7, a motor within the lifting frame 7, and a gear 10 mounted on the motor output shaft. The gear 10 meshes with a rack 8 mounted vertically on the guide rail frame 1; the rack 8 is fixed to the guide rail frame 1; and the work platform 2 is mounted on the lifting frame 7. The motor rotates the gear 10, which meshes with the rack 8, thereby controlling the vertical movement of the work platform 2.

[0034] In this embodiment, the self-locking device includes a connecting rod 3, one end of which is rotatably connected to the bottom of the work platform 2 and the other end is slidably connected to the adjustment plate 6. An eccentric shaft 5 is fixedly connected to the inside of the adjustment plate 6. The eccentric shaft 5 extends inward through the bottom crossbeam of the lifting frame 7 and connects to the eccentric wheel 9, which is located on the toothless side of the rack 8. The adjustment plate 6 is provided with a slot 4, into which the connecting rod 3 is slidably connected. A stopper 11 is provided above the gear 10 and is fixed to the lifting frame 7.

[0035] The working platform 2 is mostly assembled by multiple sets of platform sections according to the required length and connected to the lifting frame 7. When the working platform 2 is overloaded, it will push the connecting rod 3 to slide on the adjusting plate 6. When it slides to the end point of the slide groove 4, it will pull the adjusting plate 6 to rotate. During the rotation of the adjusting plate 6, the eccentric wheel 9 will be driven to rotate. In the initial state, one side of the eccentric is in a convex state and the other side is in a straight state. The straight state corresponds to the toothless side of the rack 8 and does not contact it, thereby not affecting the movement of the gear 10 relative to the rack 8. When the eccentric wheel 9 rotates, the convex shape approaches the rack 8 and contacts the rack 8, the friction force increases, and the position is limited. After being squeezed, the rack 8 will also contact the stop block 11 above the gear 10. Mechanical friction occurs between the rack 8 and the stop block 11, thereby cooperating to lock the operation of the working platform 2.

[0036] In this embodiment, a pressure sensor is provided at the connection between the connecting rod 3 and the working platform 2 .

[0037] In this embodiment, the work platform 2 is provided with an inclination sensor, which is installed at a key position of the work platform 2 frame to monitor the change of the platform's inclination angle in real time.

[0038] In this embodiment, the pressure sensor and the inclination sensor are connected to the central processing unit via a data transmission line; the central processing unit can adopt an existing central processing unit, which undertakes the important tasks of receiving, processing and sending various signals in the lifting platform. It will receive signals from various sensors, and then analyze and process these signals according to preset programs and algorithms, and then control the lifting action, speed adjustment, stop position, etc. of the lifting platform; it can also monitor the operating status of the lifting platform in real time. Once an abnormal situation is found, such as overload, excessive tilt angle, etc., the corresponding protection mechanism will be triggered to ensure the safety of equipment and personnel.

[0039] In this embodiment, the work platform 2 is equipped with an audible and visual alarm device. The work platform 2 is assembled from multiple sets of platform sections, and sensor pins are configured at the connecting shafts of the platform sections to collect real-time load-bearing pressure data of various parts. High-decibel, high-brightness audible and visual alarm devices are installed in the lifting platform operating room and in conspicuous locations on the platform. The moment unbalanced loading occurs, a strong audible and visual signal is immediately emitted to alert the operator and surrounding construction personnel. Visual interface: The operating console is equipped with a high-definition display screen, which dynamically displays real-time information such as the platform's load distribution, degree of unbalanced loading, operating parameters, self-locking and leveling status, allowing operators to intuitively grasp the overall operation of the platform.

[0040] In this embodiment, the guide rail frame 1 is provided with two groups, and the working platform 2 is connected to the two groups of guide rail frames 1 respectively, and a self-locking device is provided at each connection point. When the working platform 2 is overloaded toward one side of the guide rail frame 1, data detection is performed through the inclination sensor. When the overload angle is small, the motor on the guide rail frame 1 on the lower side of the working platform 2 is controlled to operate, so that the working platform 2 on that side moves upward for leveling; when the overload angle is moderate, the motor on the guide rail frame 1 on the higher side of the working platform 2 is controlled to operate, so that the working platform 2 on that side moves downward for leveling; through precise pulse input, the output rotation number can be determined to achieve the horizontal posture adjustment of the platform; when the overload angle is large, the motor does not work, and the self-locking devices on the two groups of guide rail frames 1 are activated for mechanical locking. When the overload braking and self-locking take effect and the overload situation is initially controlled, the system automatically starts the self-leveling program. Based on the feedback data from the inclination sensor, the central processing unit controls the motor action and gradually adjusts the platform to a horizontal state. After the reset is completed, the system automatically releases the self-locking and restores the normal operation of the platform. High-performance electromagnetic brakes can also be integrated into the working platform 2 drive system. When the system detects that the overload exceeds the set threshold, the electromagnetic brake responds immediately, quickly reducing the platform's operating speed until it stops rising and falling smoothly, thus curbing the deterioration of the overload. Graded braking strategy: In the case of light overload, the platform slows down and issues a prompt; in the case of moderate overload, the ascent is immediately terminated, and only descending adjustments are allowed; in the case of heavy overload, emergency braking is triggered, locking all operating movements of the platform. Graded response: The graded strategy of overload braking works in conjunction with a variety of safety measures to effectively control dangers according to different degrees of overload and reduce the probability of accidents. Intelligent regulation: The intelligent algorithm and control strategy of the central processing unit realize an automated process from monitoring, judgment to execution, improving the timeliness and accuracy of the system's response to overload.

[0041] Example 2:

[0042] This embodiment provides a method for using the above-mentioned anti-eccentric load construction lifting platform, including the following steps:

[0043] S1: When the guide rail frame 1 is a group and the working platform 2 is overloaded, the self-locking device is activated and mechanical locking is performed;

[0044] S2: When there are two guide rail frames 1, if the work platform 2 is unbalanced to one side of the guide rail frame 1, the tilt sensor is used to detect the data. If the unbalanced angle is small, the motor on the guide rail frame 1 on the lower side of the work platform 2 is controlled to move the work platform 2 on that side upwards for leveling.

[0045] When the eccentric load angle is moderate, the motor on the guide rail frame 1 on the higher side of the working platform 2 is controlled to move downward for leveling. The number of output rotations can be determined by precise pulse input to achieve horizontal posture adjustment of the platform.

[0046] When the eccentric load angle is large, the motors stop operating, and the self-locking devices on both guide rails (1) activate, mechanically locking the platform. Once the eccentric load braking and self-locking mechanisms are in effect and the eccentric load is initially under control, the system automatically initiates the self-leveling process. Based on the inclination sensor feedback, the central processing unit controls the motors, gradually leveling the platform. Once the platform is reset, the system automatically releases the self-locking mechanism, resuming normal operation.

[0047] When the eccentric wheel 8 is in the state of being eccentric, the eccentric wheel 9 is rotated. When the eccentric wheel 8 is in the state of being eccentric, the eccentric wheel 9 is rotated. When the eccentric wheel 8 is in the state of being eccentric, the eccentric wheel 9 is rotated. When the eccentric wheel 8 is in the state of being eccentric, the eccentric wheel 8 is rotated. When the eccentric wheel 9 is in the state of being eccentric, the eccentric wheel 8 is rotated. When the eccentric wheel 9 is in the state of being eccentric, the eccentric wheel 8 is rotated. When the eccentric wheel 9 is in the state of being eccentric, the eccentric wheel 8 is rotated. When the eccentric wheel 9 is in the state of being eccentric, the eccentric wheel 8 is in the state of being eccentric. When the eccentric wheel 9 is in the state of being eccentric, the eccentric wheel 3 is in the state of being eccentric.

[0048] Based on the data transmitted by the overload sensing element, the central processing unit uses a built-in advanced overload judgment algorithm to quickly and accurately determine the degree of platform overload and then issues corresponding instructions to the overload braking measure module. Because the overload braking measure is equipped with a high-performance electromagnetic brake and a graded braking strategy, when the overload is mild, the electromagnetic brake slows down the platform and issues an early warning, prompting the operator to make timely adjustments to prevent the overload from worsening. When the overload is moderate, the measures of stopping the ascent and allowing the descent provide operating space for adjusting the load distribution while ensuring safety. When the overload is severe, emergency braking and locking the drive system can quickly curb the danger and prevent serious accidents such as the platform tilting and overturning. The overload situation can be determined by determining the height difference between the two sides of the work platform: less than 15 mm is mild, 15 mm is moderate, and greater than 15 mm is severe. Alternatively, the tilt angle can be used as the basis for judgment, with a limit of 0.24 degrees, with less than mild, equal to moderate, and greater than severe.

[0049] At the same time, the eccentric load warning module's sound and light alarm device and visual interface can promptly alert operators and surrounding personnel, allowing them to quickly understand the platform status and take action;

[0050] The mechanical anti-eccentric load device will directly act according to the eccentric load situation at the same time as the electrical action, and trigger the mechanical limit at the same time. The limit signal has a higher priority. After the control module receives the signal, the construction lifting platform stops moving.

[0051] The self-locking system for the single guide rail and the self-leveling and reset system for the dual guide rail activate according to different situations, further limiting hazards. Multiple safety measures work together, with a graded response based on the degree of eccentric loading, effectively reducing the probability of accidents and ensuring comprehensive construction safety.

[0052] To address the inaccurate monitoring issues of traditional overload protection devices, this invention innovatively utilizes high-precision pressure sensors and inclination sensors to construct a multi-dimensional sensing network. Pressure sensors with a high accuracy of ±0.5% FS are deployed at key bearing points on the platform's base, while inclination sensors with an accuracy of ±0.1° are installed at key locations on the platform frame. This enables comprehensive and precise monitoring of the platform's load distribution and tilt status. Collected data is transmitted in real time to the central processing unit via high-speed data transmission lines or wireless transmission modules, enabling data-driven decision-making. This approach changes the previous model of relying on single monitoring methods or manual judgment, laying the foundation for precise system control. A graded response and multi-module collaboration concept: Given the varying potential risks associated with varying degrees of overload, this invention incorporates a graded response mechanism implemented through the coordinated operation of multiple modules. Based on the degree of overload determined by the overload detection algorithm, the electromagnetic brakes in the overload braking mechanism implement graded braking. Simultaneously, the overload warning module issues an alarm, and the self-locking and self-leveling reset systems of the single guide frame 1 and the dual guide frame 1 are activated as appropriate based on the platform structure and overload conditions. Each module does not operate independently, but works closely together under the coordination of the central processing unit, from warning deceleration for light overload to emergency braking and locking leveling for heavy overload, forming a complete and efficient overload response system to reduce the probability of accidents in all aspects.

[0053] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An anti-eccentric load construction lifting platform, characterized in that: The invention comprises a vertically arranged guide rail frame (1), wherein a working platform (2) is arranged on the guide rail frame (1); a lifting device is arranged on the working platform (2), and a self-locking device is arranged next to the lifting device. The lifting device is used to drive the working platform (2) to rise and fall on the guide rail frame (1), and the self-locking device is used to self-lock the working platform (2).

2. The anti-eccentric load construction lifting platform according to claim 1, characterized in that: The lifting device comprises a lifting frame (7), a motor is arranged in the lifting frame (7), a gear (10) is arranged on the motor output shaft, the gear (10) is engaged with a rack (8) vertically arranged on the guide rail frame (1); the rack (8) is fixed to the guide rail frame (1); the working platform (2) is arranged on the lifting frame (7); and a stopper (11) is arranged above the gear (10).

3. The anti-eccentric load construction lifting platform according to claim 2, characterized in that: The self-locking device includes a connecting rod (3), one end of which is rotatably connected to the bottom of the working platform (2), and the other end is slidably connected to the adjustment plate (6); an eccentric shaft (5) is fixedly connected to the inner side of the adjustment plate (6), and the eccentric shaft (5) passes inward through the bottom cross beam of the lifting frame (7) and is connected to the eccentric wheel (9), and the eccentric wheel (9) is located on the toothless side of the rack (8).

4. The anti-eccentric load construction lifting platform according to claim 3 is characterized in that: A sliding groove (4) is provided on the adjustment plate (6), and the connecting rod (3) is slidably connected in the sliding groove (4).

5. The anti-eccentric load construction lifting platform according to claim 4, characterized in that: A pressure sensor is provided at the connection between the connecting rod (3) and the working platform (2).

6. The anti-eccentric load construction lifting platform according to claim 5, characterized in that: The working platform (2) is provided with an inclination sensor.

7. The anti-eccentric load construction lifting platform according to claim 6, characterized in that: The pressure sensor and the tilt sensor are connected to the central processing unit via a data transmission line.

8. The anti-eccentric load construction lifting platform according to claim 7, characterized in that: The working platform (2) is provided with an audible and visual alarm device.

9. The anti-eccentric load construction lifting platform according to claim 8, characterized in that: The guide rail frames (1) are provided in two groups, and the working platform (2) is respectively connected to the two groups of guide rail frames (1), and self-locking devices are provided at the connection points.

10. A method for using the anti-eccentric load construction lifting platform according to any one of claims 1 to 9, characterized in that The steps include: S1: When the guide rail frame (1) is a group and the working platform (2) is overloaded, the self-locking device is activated and mechanical locking is performed; S2: When there are two guide rail frames (1), if the working platform (2) is overloaded toward one side of the guide rail frame (1), data detection is performed through the inclination sensor. When there is a slight overload, the motor on the guide rail frame (1) on the lower side of the working platform (2) is controlled to operate, so that the working platform (2) on that side moves upward for leveling; When the load is moderately eccentric, the motor on the guide rail frame (1) on the higher side of the working platform (2) is controlled to operate, so that the working platform (2) on that side moves downward for leveling; When the load is heavily eccentric, the motor does not work, and the self-locking devices on the two sets of guide rail frames (1) are activated to perform mechanical locking.

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