A weighing over-limit alarm unloading platform with convenient passage and high precision

Abstract

The utility model relates to unloading platform technical field, especially convenient to pass, the weighing over -limit alarm unloading platform of high accuracy, including main girder, the multiple groups of secondary beams of welding have from front to back between two groups of symmetrical installation's main girder, the side surface welding of the secondary beam close to a room is equipped with the notched upward and the main girder connection's buckling frame, and the inside center of buckling frame is equipped with fixing piece, and the passing board for quick installation and removal is installed on the upper end of buckling frame, and the passing board one end connects the other end in the room and is embedded with fixed piece and connects. The utility model has realized according to the platform construction form, and the construction mode of weighing sensor is combined, not only avoids the passing board to unload platform weighing platform and exerts load, but also avoids alarm control box to knock damage, reaches a kind of convenient to pass, the weighing over -limit alarm unloading platform of high accuracy.

Description

Technical Field

[0001] This utility model relates to the field of unloading platform technology, and in particular to a convenient, highly accurate unloading platform with overload alarm. Background Technology

[0002] Unloading platforms are important facilities for material turnover. They are often erected on various temporary operating platforms or frames at construction sites. The main types include mobile unloading platforms, ground-mounted unloading platforms, and cantilevered unloading platforms. Unloading platforms are widely used in warehouses, factories, docks, construction sites, and other locations. Especially in the logistics and transportation industry, they are used to safely and efficiently transfer goods from transport vehicles to the ground or other equipment. At construction sites, unloading platforms play an important role in material turnover, which can significantly improve construction efficiency and reduce project costs.

[0003] Currently, steel cantilever unloading platforms with integrated material weighing equipment are becoming increasingly common. However, existing technologies have the following drawbacks: the four sensor legs of the weighbridge are placed directly on the secondary beam structure of the unloading platform, lacking stable and effective fixing measures. This installation method poses a significant safety hazard. Since the unloading platform typically needs to maintain a certain tilt angle during floor-to-floor hoisting to facilitate docking with the floor structure or installation operations, in this non-horizontal state, the weighbridge is highly susceptible to slippage or even falling off the platform due to gravity. Such an accident could not only damage the equipment but also potentially cause damage to the structures below. This poses a serious threat to workers and the construction environment, affecting overall construction safety. Meanwhile, in actual use, to facilitate personnel passage and material transfer, a passageway is usually laid between the scaffolding and the unloading platform. One end of the passageway is placed on the indoor floor, and the other end is pressed against the surface of the weighing platform, thus forming a temporary passage. However, this arrangement inevitably applies additional static and dynamic loads to the weighing platform. Especially when personnel frequently pass through or carry small tools and materials, the additional weight will directly affect the sensor's measurement results, leading to deviations in the weighing data. Utility Model Content

[0004] In order to overcome the safety hazards and defects of existing unloading platforms, such as the lack of fixed sensor legs, the impact of passage plates on weighing accuracy, and the easy collision damage to alarm boxes, this utility model provides a convenient and highly accurate weighing over-limit alarm unloading platform.

[0005] The technical solution is as follows: A convenient and highly accurate weighing over-limit alarm unloading platform includes a main beam; multiple sets of secondary beams are welded between two symmetrically installed main beams from front to back; a fastening frame with an upward-facing slot and connected to the main beam is welded to the side of one of the secondary beams near the interior; a fixing component is provided in the center of the fastening frame; a passage plate for quick installation and disassembly is installed on the upper end of the fastening frame; one end of the passage plate is connected to the interior and the other end is fitted and connected to the fixing component.

[0006] Furthermore, two sets of symmetrical fixing plates are welded to the outer side of the secondary beam. The fixing plates are higher than the upper surface of the secondary beam, and U-shaped screws are installed through the inside of the fixing plates that are higher than the secondary beam. A sensor support leg is installed in the center of the U-shaped screw.

[0007] Furthermore, a load cell is installed at the center of the upper surface of the sensor leg, and a weighing platform is provided on the upper end of the load cell.

[0008] Furthermore, a stop is provided at the lower end of the main beam, and a front guardrail is installed at the upper end of a secondary beam away from the interior.

[0009] Furthermore, a movable window is installed on the surface of the front guardrail, and the movable window is rotatably connected to the front guardrail via hinges.

[0010] Furthermore, the inner side of the operable window is provided with bolts that are threadedly connected to the front guardrail, and a side guardrail is installed on the upper end of the main beam.

[0011] Furthermore, an alarm control box is installed on the outside of the side guardrail. The alarm control box is fixedly connected to the side guardrail on both sides by a fixing bracket. The main keel of the weighing platform is made of square steel. The sensor data cable passes through the round hole on the side of the end of the square steel, passes through the inside of the square steel keel and exits from the other end opening, and is connected to the alarm control box through a protective tube.

[0012] Furthermore, multiple sets of load-bearing lugs are symmetrically provided on the outer side of the two main beams away from the interior, and two sets of lifting rings are fixedly connected to the inner side of the two main beams. Two sets of movable flaps are symmetrically provided on the lower front side of the side railing.

[0013] The beneficial effects are as follows: This utility model achieves stable support by adding a fixing plate with U-shaped screws to the side of the secondary beam, embedding and firmly connecting the sensor legs, and preventing the weighbridge from slipping due to tilting during hoisting. One end of the passage plate is laid indoors, and the other end is fixed to the fixing component, ensuring the safety of personnel passage. At the same time, it avoids the passage plate from applying load to the weighing platform, which would affect the accuracy of the data. The data cable passes through the inside of the square steel keel of the weighing platform and is introduced into the alarm control box through a protective pipe, effectively avoiding wear and external environmental interference, ensuring stable signal transmission and accurate weighing. This device, through structural reinforcement and reasonable layout, realizes a convenient, highly accurate weighing over-limit alarm unloading platform. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a weighing over-limit alarm unloading platform of the present invention, which is convenient to pass and has high accuracy.

[0015] Figure 2 This is a three-dimensional structural diagram of the lifting ring of this utility model;

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure of the weighing platform of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the fastening frame of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the fixing plate of this utility model.

[0019] In the attached diagram, the following are the reference numerals: 1. Main beam; 2. Secondary beam; 3. Front guardrail; 4. Side guardrail; 5. Movable opening window; 6. Hinge; 7. Bolt; 8. Alarm control box; 9. Fixing frame; 10. Load-bearing lug; 11. Lifting ring; 12. Weighing platform; 13. Passage plate; 14. Stop; 15. Fastening frame; 16. Fixing component; 17. U-bolt; 18. Fixing plate; 19. Sensor leg; 20. Weighing sensor; 21. Movable flap. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Among the currently discovered feasible technologies, the following are described:

[0022] Unloading platforms are important temporary facilities widely used in construction, logistics and other industrial fields, mainly for the efficient transfer and centralized stacking of materials. As a key component of the material turnover system on construction sites, unloading platforms not only improve loading and unloading efficiency but also play an irreplaceable role in ensuring operational safety and optimizing construction processes. Structurally, unloading platforms are mainly divided into three categories: mobile unloading platforms, ground-mounted unloading platforms, and cantilevered unloading platforms. Mobile unloading platforms are usually equipped with wheels or detachable outriggers, facilitating flexible transfer between different construction areas and are suitable for small and medium-sized projects that require frequent location changes. Ground-mounted unloading platforms are fixed structures built directly on the ground foundation, with strong load-bearing capacity and good stability, suitable for long-term construction projects or warehouses, factories, and other locations. Cantilevered unloading platforms are cantilevered from the outside of buildings via steel beams or support frames and are widely used in high-rise building construction. They can effectively avoid conflicts with external scaffolding and improve vertical transportation efficiency. Regardless of the type, the core function of an unloading platform is to provide a stable unloading operation space for lifting equipment (such as tower cranes and elevators) and safely transfer building materials from high altitudes to the ground or other designated locations. Its applications cover multiple scenarios such as construction sites, warehousing centers, ports, and logistics parks. Especially with the rapid development of modern logistics and prefabricated buildings, the importance of unloading platforms is becoming increasingly prominent. In actual construction, unloading platforms play a key role in connecting high-altitude operations with ground transportation, enabling bulk building materials such as steel bars, formwork, steel pipes, and concrete components to be transferred and centrally managed in an orderly and efficient manner. This not only reduces the workload of manual handling but also significantly accelerates the construction progress and improves on-site management. At the same time, a reasonable layout of unloading platforms can reduce safety hazards caused by improper material stacking and lower the probability of construction accidents. In addition, with the development of intelligent technology, more and more unloading platforms are beginning to integrate functions such as weighing, alarms, and remote monitoring. For example, intelligent unloading platforms with overload alarm systems can automatically issue an alarm when the material stack exceeds the rated load, reminding operators to adjust in time, thereby effectively preventing safety accidents such as platform overload collapse. This trend towards integrated and intelligent design has further propelled unloading platforms toward greater efficiency, safety, and environmental friendliness. In conclusion, as an indispensable auxiliary facility on construction sites, unloading platforms not only greatly improve material transfer efficiency and reduce labor costs and engineering risks, but also play a positive role in promoting modern industrialized construction and smart construction site development.

[0023] As a key piece of equipment in unloading platforms for accurate weighing, the installation method of the weighbridge directly affects the system's measurement accuracy and overall operational safety. Currently, a common practice on construction sites is to place the four sensor legs of the weighbridge directly on the secondary beam structure of the unloading platform without any stable and effective fixing measures. While this installation method is relatively simple in initial operation, it poses serious hidden dangers from the perspectives of structural safety, operational stability, and risk control during hoisting. Because unloading platforms require frequent transfers and hoisting operations between floors during construction, tower cranes or cranes are typically used to move them from one floor to another. During such hoisting processes, to facilitate docking with the target floor structure or to adapt to the limitations of on-site installation space, the unloading platform often needs to be lifted and placed at a certain angle. During this non-horizontal transportation process, the weighbridge is highly susceptible to slippage, displacement, or even detachment from the platform due to uneven force or shift in the center of gravity. Such accidents not only damage expensive weighbridge equipment but also pose serious personal injury risks to workers below, and may even trigger catastrophic accidents such as falling objects, severely impacting the safety and order of the entire construction site, project progress, and the company's image regarding safe production. Furthermore, in practical construction applications, to meet the needs of worker access and small material transfer, a passageway is typically laid between the scaffolding and the unloading platform. One end of this passageway is placed on the indoor floor or existing structural layer, while the other end rests on the weighing platform surface, forming a temporary passage. However, while this arrangement improves construction convenience to some extent, it inevitably interferes with the weighing system. The weight of the passageway itself, the dynamic load generated by personnel walking, and the additional load from handling tools and stacking auxiliary materials all act cumulatively on the weighing platform, directly affecting the data collected by the sensors. This can lead to significant deviations in weighing results, affecting the accuracy of the overload alarm system, weakening the platform's ability to warn of overload risks, and reducing the system's reliability and practicality. A more prominent problem is that, since the access slabs are usually temporary structures, they must be manually removed before the unloading platform is ready for hoisting and transfer to prevent them from falling during aerial transport due to insecure fixing, posing a safety hazard of falling objects from height. This process not only increases the workload of construction workers but also prolongs the time required for each floor transfer, reducing construction efficiency. Furthermore, the repeated disassembly and installation of the access slabs can easily lead to human error, such as incomplete fixing or omissions in removal, further exacerbating potential safety risks and posing significant challenges to on-site management.

[0024] like Figures 1-5As shown, a convenient and highly accurate weighing over-limit alarm unloading platform includes a main beam 1; multiple sets of secondary beams 2 are welded between two symmetrically installed main beams 1 from front to back; a fastening frame 15 with an upward-facing slot and connected to the main beam 1 is welded to the side of one of the secondary beams 2 near the interior; a fixing member 16 is provided in the center of the fastening frame 15; a passage plate 13 for quick installation and disassembly is installed on the upper end of the fastening frame 15; one end of the passage plate 13 is connected to the interior and the other end is fitted and connected to the fixing member 16.

[0025] Two sets of symmetrical fixing plates 18 are welded to the outer side of the secondary beam 2. The fixing plates 18 are higher than the upper surface of the secondary beam 2. U-shaped screws 17 are installed through the fixing plates 18 that are higher than the secondary beam 2. A sensor leg 19 is installed in the center of the U-shaped screw 17 to improve the stability of the weighing system and prevent the sensor leg 19 from shifting or slipping. A weighing sensor 20 is installed in the center of the upper surface of the sensor leg 19. A weighing platform 12 is provided on the upper end of the weighing sensor 20 to realize accurate weight acquisition and stable support of the bearing platform, ensuring accurate and reliable data.

[0026] In actual operation, two sets of symmetrically arranged main beams 1 and multiple secondary beams 2 welded between them together constitute the basic structure of the platform, exhibiting high overall rigidity and load-bearing capacity. The secondary beams 2 closest to the interior have upward-opening fastening frames 15 on their sides, with internal fasteners 16 for connecting passage plates 13. One end of the passage plate 13 extends into the interior, and the other end is fitted into the fasteners 16, enabling quick installation and disassembly, facilitating personnel passage and material transfer. A fixing plate 18 welded to the outer side of the secondary beams 2 protrudes above its surface, with U-shaped screws 17 running through it to secure sensor legs 19, ensuring stable support for the load cell 20 and the weighing platform 12, preventing displacement due to vibration or tilting. The load cell 20, located at the center above the legs, converts the applied force into an electrical signal. This signal is received by the weighing platform 12 and transmitted to the sensor, enabling high-precision weight acquisition.

[0027] Please see Figures 1-3 The main beam 1 has a stop 14 at its lower end, and a front guardrail 3 is installed on the upper end of a secondary beam 2 away from the interior to enhance the overall structural stability, prevent the platform from sliding, and ensure the safety of the operating area. The surface of the front guardrail 3 is equipped with a movable opening window 5, which is rotatably connected to the front guardrail 3 by a hinge 6. This facilitates maintenance and repair while maintaining the integrity of the protection, improving the flexibility and safety of use. The inner side of the movable opening window 5 is provided with a bolt 7 that is threadedly connected to the front guardrail 3. The upper end of the main beam 1 is equipped with a side guardrail 4 to effectively protect the control equipment from external impacts and improve the operational stability of the control system.

[0028] An alarm control box 8 is installed on the outside of the side railing 4. The alarm control box 8 is fixedly connected to the side railing 4 on both sides by fixing brackets 9. The main keel of the weighing platform 12 is made of square steel. The sensor data line is inserted from the round hole on the side of the end of the square steel, passes through the inside of the square steel keel and comes out from the opening at the other end, and is connected to the control box through the protective tube to effectively protect the sensor data line, avoid wear, and ensure stable signal transmission. Multiple sets of load-bearing lugs 10 are symmetrically provided on the outer side of the two sets of main beams 1 away from the indoor area. Two sets of lifting rings 11 are fixedly connected to the inner side of the two sets of main beams 1. Two sets of movable flip plates 21 are symmetrically provided on the lower front side of the side railing 4 to facilitate the overall lifting and installation of the platform, improve the efficiency of floor transfer and the safety of operation.

[0029] In actual operation, the main beam 1 and secondary beam 2 constitute the main load-bearing structure of the platform. The stop 14 at the lower end of the main beam 1 acts as a limit, preventing slippage during use and ensuring overall stability. The front guardrail 3 is installed on the secondary beam 2, away from the interior, providing protection for the operating area. The movable window 5 on the guardrail is opened and closed via hinges 6 and secured to the guardrail with bolts 7, ensuring safety while facilitating equipment inspection and daily maintenance. The side guardrail 4 not only provides lateral protection but also serves as the mounting base for the alarm control box 8. The control box is securely connected to the outside of the guardrail via a fixing bracket 9, preventing damage from external impacts and ensuring the stable operation of the weighing system. The weighing platform 12 uses square steel as its main frame. The sensor data lines pass through the inside of the square steel and are introduced into the control box through protective tubes, effectively preventing line wear.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A convenient and highly accurate weighing over-limit alarm unloading platform, characterized in that, It includes a main beam (1); between the two sets of symmetrically installed main beams (1), there are multiple sets of secondary beams (2) welded from front to back. A secondary beam (2) near the interior is provided with a fastening frame (15) with the slot facing upward and connected to the main beam (1) welded on its side. A fixing part (16) is provided in the center of the fastening frame (15). A passage plate (13) for quick installation and disassembly is installed on the upper end of the fastening frame (15). One end of the passage plate (13) is connected to the interior and the other end is fitted and connected to the fixing part (16).

2. The convenient and highly accurate weighing over-limit alarm unloading platform according to claim 1, characterized in that, Two sets of symmetrical fixing plates (18) are welded to the outer side of the secondary beam (2). The fixing plates (18) are higher than the upper surface of the secondary beam (2). The fixing plates (18) that are higher than the secondary beam (2) are provided with U-shaped screws (17) through the inside. The sensor leg (19) is installed in the center of the U-shaped screw (17).

3. The convenient and highly accurate weighing over-limit alarm unloading platform according to claim 2, characterized in that, A weighing sensor (20) is installed at the center of the upper surface of the sensor leg (19), and a weighing platform (12) is provided at the upper end of the weighing sensor (20).

4. The convenient and highly accurate weighing over-limit alarm unloading platform according to claim 1, characterized in that, The main beam (1) has a stop (14) at the lower end, and a secondary beam (2) away from the room has a front guardrail (3) installed at the upper end.

5. The convenient and highly accurate weighing over-limit alarm unloading platform according to claim 4, characterized in that, The front guardrail (3) is equipped with a movable opening window (5), which is rotatably connected to the front guardrail (3) via a hinge (6).

6. The convenient and highly accurate weighing over-limit alarm unloading platform according to claim 5, characterized in that, The inner side of the operable window (5) is provided with bolts (7) that are threadedly connected to the front guardrail (3), and the upper end of the main beam (1) is equipped with a side guardrail (4).

7. The convenient and highly accurate weighing over-limit alarm unloading platform according to claim 6, characterized in that, An alarm control box (8) is installed on the outside of the side guardrail (4). The alarm control box (8) is fixedly connected to the side guardrail (4) on both sides by a fixing bracket (9). The main keel of the weighing platform (12) is made of square steel. The sensor data line is inserted through the round hole on the side of the end of the square steel, passes through the inside of the square steel keel and exits through the opening at the other end, and is connected to the alarm control box (8) through the protective tube.

8. The convenient and highly accurate weighing over-limit alarm unloading platform according to claim 1, characterized in that, Two sets of main beams (1) are symmetrically provided with multiple sets of load-bearing lugs (10) on the outer side of the end away from the room. Two sets of lifting rings (11) are fixedly connected to the inner side of the two sets of main beams (1). Two sets of movable flaps (21) are symmetrically provided on the lower front side of the side guardrail (4).

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