Intelligent lifting chain integrated with multi-parameter sensing and safety pre-warning system

Abstract

The invention discloses an intelligent lifting chain integrated with multi-parameter sensing and a safety early warning system, and relates to the technical field of lifting chains, the intelligent lifting chain comprises a main lifting chain and two standby chains, one end of the main lifting chain and one end of each standby chain are provided with a connecting plate, and the end, away from the main lifting chain, of each connecting plate is provided with three telescopic rods; the outer sides of the three telescopic rods are each provided with a base, side plates are installed on the two sides of the upper end of each base, hook assemblies are installed in the two side plates, a total block is installed at the other end of the main lifting device, the two sides of the total block are jointly provided with gripper assemblies, and the left side and the right side of the total block are each rotationally connected with a rotating shaft. By arranging a series of structures, operation and stop of the lifting chain equipment are intelligently controlled through the central control board and the early warning system, data of the lifting chain can be collected and monitored in real time, and potential safety hazards existing in the lifting chain are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting chains, and in particular to an intelligent lifting chain integrated with multi-parameter sensing and a safety warning system. Background Technique

[0002] The lifting chain can adjust the length of the chain according to the lifting height of the lifted object. It is an essential and important load-taking device for the crane, and plays an important role in improving the operation efficiency of the crane and expanding the operation range of the crane.

[0003] The existing lifting chains generally have a relatively simple structure. The items can be lifted by the cooperation of the chain and the hook. However, the functions of the chain are relatively single. Since chains of different sizes and materials all have a maximum bearing tension, the existing chains generally only lift items with a load capacity lower than their own. However, after long-term use, the chains will inevitably wear, and they cannot integrate their own conditions into intelligent data. Only by relying on manual observation to judge whether the chains are intact, there will still be certain potential safety hazards. Summary of the Invention

[0004] The purpose of the present invention is to provide an intelligent lifting chain integrated with multi-parameter sensing and a safety warning system to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: An intelligent lifting chain integrated with multi-parameter sensing and a safety warning system, including a main lifting chain and two spare chains. One end of the main lifting chain and the spare chains is installed with a connecting plate. Three telescopic rods are installed at the end of the connecting plate away from the main lifting chain. Bases are installed on the outer sides of the three telescopic rods. Side plates are installed on both upper ends of the bases. A hook assembly is installed inside the two side plates. The other end of the main lifting connection is installed with a total block. A gripper assembly is installed jointly on both sides of the total block. One rotating shaft is rotatably connected to the left and right sides of the total block. The inner sides of the two rotating shafts are connected to the output ends of the drive motors installed inside the total block. A stirring disc is installed on the outer side of the rotating shaft. A plurality of connecting columns are circularly and equidistantly arranged on the outer side of the stirring disc. A closed ring is installed jointly on the outer sides of the plurality of connecting columns. The two spare chains are respectively hung on the surfaces of any connecting columns on the left and right sides of the total block.

[0006] Preferably, an annular guiding groove is opened at the positions on the left and right sides of the total block and outside the rotating shaft. A plurality of guiding rods are circularly and equidistantly arranged at the end of the stirring disc close to the total block. One ends of the plurality of guiding rods are in limit sliding connection with the guiding groove.

[0007] Preferably, a rubber pad is installed at the lower end of the connecting plate.

[0008] Preferably, the gripper assembly comprises a rotating plate and a load-bearing rod, the front and rear ends of the total block are both rotatably connected with a rotating plate, and a load-bearing rod is commonly installed between the two rotating plates.

[0009] Preferably, the hook assembly includes a rotating hook, a fixed hook, a fixed shaft and a rotating shaft. The fixed shaft is installed between the two side plates. The fixed hook is fixedly installed on the surface of the fixed shaft. The interior of the fixed shaft is connected to the rotating shaft through a torsion spring. The surface of the rotating shaft is installed with a rotating hook, and the outer side of the rotating hook is in contact with the inner side of the fixed hook.

[0010] Preferably, a spring locking structure is installed between the two side plates, and the spring locking structure is located on the inner side of the hook assembly.

[0011] A safety early warning system integrating multi-parameter sensing intelligent lifting chain, specifically comprising:

[0012] Micro strain sensors are embedded in the internal metal rings of the main lifting chain and the backup connection. Multiple micro strain sensors are connected to a data acquisition module via wireless signals. The data acquisition module is electrically connected to an edge computing node. The edge computing node is electrically connected to a central control console. The central control console is electrically connected to an early warning system.

[0013] Preferably, the warning system includes level one, level two and level three warnings, the level one warning includes a local sound and light alarm, the level two warning includes starting a backup connection and text messages as well as mobile software reminders, and the level three warning includes emergency shutdown of equipment and uploading of data to a chain for evidence.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. The intelligent lifting chain and safety warning system with integrated multi-parameter sensing has multiple micro strain sensors embedded inside the main lifting connection and the spare chain. The micro strain sensor infers the tension of the metal ring through the tiny deformation of the metal ring inside the chain, and transmits the collected information to the data acquisition module for collection. The data acquisition module transmits the data to the edge computing node. The edge computing node eliminates redundant data and transmits the key data to the central control console. The central control console integrates the key data and displays it to the outside in the form of text and images. At the same time, when the tension of the metal ring reaches the warning target, the central control console will issue a first warning, a second warning or a third warning through the warning system. The operation and stop of the lifting chain equipment are intelligently controlled through the central control console and the warning system, and the data of the lifting chain can be collected and monitored in real time to reduce the safety hazards of the lifting chain.

[0016] 2. The intelligent lifting chain and safety warning system integrating multi-parameter sensing is provided with two spare chains. The driving motor can drive the rotating shaft to rotate, and the rotating shaft drives the stirring disc and multiple connecting columns to rotate, which will drive the spare chains to be wound up. At this time, the spare chains will be tightened and straightened, sharing the tension for the main lifting chain, reducing the load of the main lifting chain, and avoiding the situation that the main lifting chain breaks due to excessive tension during the lifting process, reducing potential safety hazards.

[0017] 3. The intelligent lifting chain and safety warning system integrating multi-parameter sensing forms a double locking structure by setting a hook assembly and a spring locking structure. The heavy object is suspended inside the spring locking structure, and the spring locking structure provides the first level of support effect. When the spring locking structure is damaged, the hook assembly can provide the second level of support effect. The double support effect can provide a more stable supporting force, and the hook assembly and the spring locking structure can meet the lifting requirements of different types of heavy objects.

[0018] 4. The intelligent lifting chain and safety warning system integrating multi-parameter sensing is provided with a triple prediction system that increases sequentially. When it reaches 80% of the metal ring preload, a first-level warning is given in the form of sound broadcast and lighting. When overloading continuously three times or there is a risk of fatigue fracture, a second-level warning is sent to notify the administrator in the form of text message or software prompt, and the spare chain is started to reduce the tension on the main lifting chain. When the fracture risk of the main lifting chain and the spare chain exceeds 90%, the lifting is stopped urgently, and the data is recorded and uploaded for evidence preservation. The triple warning can better facilitate the user to understand the state of the chain. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the related structure of the rubber pad of the present invention;

[0021] Figure 3 It is a schematic diagram of the related structure of the hook assembly of the present invention;

[0022] Figure 4 It is a schematic diagram of the related structure of the stirring disc of the present invention;

[0023] Figure 5 It is a system diagram of the overall system of the present invention;

[0024] Figure 6 It is a system diagram of the warning system of the present invention.

[0025] In the figure: 1, main hoisting chain; 2, spare chain; 3, connecting plate; 4, total block; 5, gripper assembly; 501, rotating plate; 502, load-bearing rod; 6, telescopic rod; 7, hook assembly; 701, rotating hook; 702, fixed hook; 703, fixed shaft; 704, rotating shaft; 8, rubber pad; 9, base; 10, side plate; 11, spring locking structure; 12, rotating shaft; 13, guide groove; 14, guide rod; 15, stirring disc; 16, connecting column; 17, closed ring. Detailed implementation manners

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0028] Such as Figures 1 to 6As shown in the figure, the intelligent lifting chain integrating multi-parameter sensing in this embodiment includes a main lifting chain 1 and two spare chains 2. The length of the spare chain 2 is longer than that of the main lifting chain 1. When the main lifting chain 1 is used to lift an object, the spare chain 2 is not straightened. At this time, only the main lifting chain 1 is used for lifting. One end of the main lifting chain 1 and the spare chain 2 is installed with a connecting plate 3. One end of the connecting plate 3 away from the main lifting chain 1 is installed with three telescopic rods 6. The telescopic rods 6 are driven telescopic structures and can be telescoped within a certain range manually. A base 9 is installed on the outer sides of the three telescopic rods 6. On both sides of the upper end of the base 9, side plates 10 are installed. A hook assembly 7 is installed inside the two side plates 10. The hook assembly 7 is used to connect the object to be lifted. The other end of the main lifting connection is installed with a total block 4. A gripper assembly 5 is installed on both sides of the total block 4. The gripper assembly 5 is used to connect with the crane. A rotating shaft 12 is rotatably connected to the left and right sides of the total block 4. The inner sides of the two rotating shafts 12 are connected to the output ends of the drive motors installed inside the total block 4. The two drive motors are powered by internal mobile power supplies. The drive motors can drive the rotating shafts 12 to rotate. It should be noted that the rotating shafts 12 will only start when the main lifting chain 1 has a large overload. After each start, the user needs to repair and maintain the mobile power supply and the drive motors. A stirring disk 15 is installed on the outer side of the rotating shaft 12. A plurality of connecting columns 16 are circularly and equidistantly arranged on the outer side of the stirring disk 15. A closed ring 17 is installed on the outer sides of the plurality of connecting columns 16. The two spare chains 2 are respectively hung on the surfaces of any connecting columns 16 on the left and right sides of the total block 4. When the rotating shaft 12 drives the stirring disk 15 and the plurality of connecting columns 16 to rotate, it will drive the spare chains 2 to be wound up. At this time, the spare chains 2 will be tightened and straightened, and share the tension for the main lifting chain 1, reducing the load of the main lifting chain 1. During the lifting process, it can also prevent the main lifting chain 1 from breaking due to excessive tension, reducing potential safety hazards.

[0029] Specifically, an annular guiding groove 13 is opened at the positions on the left and right sides of the total block 4 and outside the rotating shaft 12. A plurality of guiding rods 14 are circularly and equidistantly arranged at one end of the stirring disk 15 close to the total block 4. One ends of the plurality of guiding rods 14 are in limiting sliding connection with the guiding groove 13. When the rotating shaft 12 rotates, the stirring disk 15 will rotate synchronously, and then drive the guiding rods 14 to rotate inside the guiding groove 13. It should be noted that the guiding groove 13 has the effects of guiding and limiting the guiding rods 14, which can enhance the stability of the stirring disk 15.

[0030] Furthermore, a rubber pad 8 is installed at the lower end of the connecting plate 3. By setting the rubber pad 8 at the connection between the connecting plate 3 and the main lifting chain 1 and the spare chain 2, the vibration impact during hoisting can be absorbed, reducing the fatigue of the connection points.

[0031] Further, the gripper assembly 5 includes a rotating plate 501 and a load-bearing rod 502. Rotating plates 501 are rotatably connected to both the front and rear ends of the main block 4. A load-bearing rod 502 is commonly installed between the two rotating plates 501 and is connected to a crane through the load-bearing rod 502. The two rotating plates 501 can rotate to a certain extent, increasing the flexibility during the installation of the device.

[0032] Furthermore, the hook assembly 7 includes a rotating hook 701, a fixed hook 702, a fixed shaft 703, and a rotating shaft 704. A fixed shaft 703 is commonly installed between the two side plates 10. A fixed hook 702 is fixedly installed on the surface of the fixed shaft 703. A rotating shaft 704 is connected to the inside of the fixed shaft 703 through a torsion spring. A rotating hook 701 is installed on the surface of the rotating shaft 704. The outer side of the rotating hook 701 is in contact with the inner side of the fixed hook 702. During use, it is necessary to manually squeeze the rotating hook 701 inward to create a gap between the rotating hook 701 and the fixed hook 702. At this time, the hook assembly 7 can be connected to an item. After the external force is removed, under the effect of the torsion spring, the rotating hook 701 will reset and reconnect with the fixed hook 702 to achieve a locking effect. A spring locking structure 11 is commonly installed between the two side plates 10. The spring locking structure 11 is located inside the hook assembly 7. A spring is embedded inside the spring locking structure 11 and can be locked under the action of an external force. This is a relatively conventional technical solution in the prior art and will not be described in detail. By setting the hook assembly 7 and the spring locking structure 11 to form a double padlock structure, a heavy object is suspended inside the spring locking structure 11. The spring locking structure 11 provides the first level of support effect. When the spring locking structure 11 is damaged, the hook assembly 7 can provide the second level of support effect. The double support effect can provide a more stable support force, and the hook assembly 7 and the spring locking structure 11 can meet the lifting requirements of different types of heavy objects.

[0033] An integrated multi-parameter sensing intelligent lifting chain safety warning system specifically includes:

[0034] Micro strain sensors are embedded in the internal metal rings of the main lifting chain 1 and the spare connection. Multiple micro strain sensors are connected to the data acquisition module through wireless signals. The data acquisition module is electrically connected to the edge computing node, the edge computing node is electrically connected to the central control console, and the central control console is electrically connected to the early warning system. One or two micro strain sensors, such as FBG fiber gratings, are embedded in each metal ring. The sensors are fixed to the inner wall of the chain link by welding or epoxy resin to avoid contact with the outside world. The data acquisition modules are distributedly deployed in the collection terminals of the chain nodes. Each terminal covers three to five sensors for receiving sensor data and preprocessing the data. The preprocessed tension is combed and transmitted to the edge computing node. The edge computing node is installed inside the crane control room to eliminate redundant data inside the data and transmit key data to the central control console, such as changes in tension. The central control console performs risk assessment on the data and connects it to the early warning system.

[0035] Furthermore, the early warning system includes first-level early warning, second-level early warning and third-level early warning. The first-level early warning includes local sound and light alarm, the second-level early warning includes starting the backup connection and text messages and mobile software reminders, and the third-level early warning includes emergency shutdown of the equipment and data uploading to the chain for evidence. By setting a triple prediction system that increases in sequence, when the preload of the metal ring reaches 80%, an early warning is given through sound broadcast and light formation. When there is a risk of overloading for three consecutive times or fatigue fracture, the administrator is notified through a second early warning in the form of text messages or software prompts, and the backup chain 2 is started to reduce the tension on the main lifting chain 1. When the risk of fracture of the main lifting chain 1 and the backup chain 2 exceeds 90%, the lifting is stopped urgently and the data is recorded and uploaded for evidence. The triple early warning can better help users understand the status of the chain.

[0036] The method of using this embodiment is as follows: by embedding multiple micro strain sensors inside the main lifting connection and the spare chain 2, the micro strain sensor infers the tension on the metal ring through the tiny deformation of the metal ring inside the chain, and transmits the collected information to the data acquisition module for collection, the data acquisition module transmits the data to the edge computing node, the edge computing node eliminates redundant data, and transmits the key data to the central control console, the central control console integrates the key data and displays it to the outside in the form of text and images, and at the same time, when the tension of the metal ring reaches the warning target, the central control console will issue a first warning, a second warning or a third warning through the warning system, and the operation and stop of the lifting chain equipment can be intelligently controlled through the central console and the warning system, and the data of the lifting chain can be collected and monitored in real time to reduce the safety hazards of the lifting chain.

[0037] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An intelligent lifting chain with integrated multi-parameter sensing, comprising a main lifting chain (1) and two spare chains (2), characterized in that: A connecting plate (3) is installed at one end of the main lifting chain (1) and the spare chain (2); three telescopic rods (6) are installed at one end of the connecting plate (3) away from the main lifting chain (1); bases (9) are installed on the outer sides of the three telescopic rods (6); side plates (10) are installed on both sides of the upper end of the base (9); hook assemblies (7) are installed inside the two side plates (10); a main block (4) is installed at the other end of the main lifting connection; grab assemblies (5) are installed on both sides of the main block (4); A rotating shaft (12) is rotatably connected to both left and right sides of the main block (4); the inner sides of the two rotating shafts (12) are connected to the output end of the driving motor installed inside the main block (4); a stirring disc (15) is installed on the outer side of the rotating shaft (12); a plurality of connecting columns (16) are installed in a circular equidistant array on the outer side of the stirring disc (15); a closed ring (17) is commonly installed on the outer sides of the plurality of connecting columns (16); and the two spare chains (2) are respectively hung on the surface of any connecting column (16) on the left and right sides of the main block (4).

2. The intelligent lifting chain with integrated multi-parameter sensing according to claim 1 is characterized in that: An annular guide groove (13) is provided on both sides of the main block (4) and outside the rotating shaft (12); a plurality of guide rods (14) are installed in a circular equidistant array at one end of the stirring plate (15) close to the main block (4); one end of each of the plurality of guide rods (14) is connected to the guide groove (13) in a limited sliding manner.

3. The intelligent lifting chain with integrated multi-parameter sensing according to claim 1 is characterized in that: A rubber pad (8) is installed at the lower end of the connecting plate (3).

4. The intelligent lifting chain with integrated multi-parameter sensing according to claim 1 is characterized in that: The gripper assembly (5) comprises a rotating plate (501) and a load-bearing rod (502); the front and rear ends of the main block (4) are both rotatably connected to the rotating plates (501); and the load-bearing rod (502) is installed between the two rotating plates (501).

5. The intelligent lifting chain with integrated multi-parameter sensing according to claim 1 is characterized in that: The hook assembly (7) comprises a rotating hook (701), a fixed hook (702), a fixed shaft (703) and a rotating shaft (704); the fixed shaft (703) is installed between the two side plates (10); the fixed hook (702) is fixedly installed on the surface of the fixed shaft (703); the interior of the fixed shaft (703) is connected to the rotating shaft (704) via a torsion spring; the rotating hook (701) is installed on the surface of the rotating shaft (704); the outer side of the rotating hook (701) is in contact with the inner side of the fixed hook (702).

6. The intelligent lifting chain with integrated multi-parameter sensing according to claim 1 is characterized in that: A spring locking structure (11) is installed between the two side plates (10), and the spring locking structure (11) is located on the inner side of the hook assembly (7).

7. A safety warning system for an integrated multi-parameter sensing intelligent lifting chain according to claims 1-6, characterized in that: Specifically include: Micro strain sensors are embedded in the main lifting chain (1) and the inner metal rings of the backup connection. Multiple micro strain sensors are connected to a data acquisition module via wireless signals. The data acquisition module is electrically connected to an edge computing node. The edge computing node is electrically connected to a central control console. The central control console is electrically connected to an early warning system.

8. The safety warning system for integrated multi-parameter sensing intelligent lifting chain according to claim 7 is characterized in that: The warning system includes level one, level two and level three warnings. The level one warning includes local sound and light alarms, the level two warning includes starting a backup connection and text messages as well as mobile software reminders, and the level three warning includes emergency shutdown of equipment and data storage on the chain.

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