A hoisting balancing device and method for a concrete precast

Abstract

The application provides a hoisting balance device and method for a concrete prefabricated part, which comprises a hanging assembly connected with a crane at the uppermost position, a hoist tray assembly arranged on the side of the hanging assembly away from the crane, a hoisting assembly arranged at the central position of the top of the hoist tray assembly, a plurality of main hoisting components connected with the hoisting assembly and used for hoisting the concrete prefabricated part, and a locking assembly arranged at the central position of the bottom of the hoist tray assembly. The hoisting assembly comprises a driving part, a plurality of rope collecting discs sleeved on the outer surface of the driving part and used for recovering at least part of the main hoisting components, and a differential shaft arranged between the rope collecting discs and the driving part. Through the differential shaft, when the tension of the main hoisting components exceeds the tension threshold of the differential shaft during the recovery of the main hoisting components and the concrete prefabricated part in sequence, the differential shaft slips based on the driving part, and after the remaining differential shafts slip at the same time, the locking assembly is used for locking the main hoisting components, so that the force balance of each main hoisting component is ensured.

Description

Technical Field

[0001] This invention relates to the field of building technology, and in particular to a hoisting and balancing device and method for precast concrete components. Background Technology

[0002] Precast concrete components, also known as precast concrete components or PC components, refer to concrete components that are not cast on the construction site, but are precast in batches in a factory using steel bars and concrete according to molds, and then transported to the construction site for direct hoisting and assembly. In the process of hoisting precast concrete components, due to the diversity of the shapes of the precast components, in order to achieve horizontal balance of the hoisted object and avoid safety hazards caused by component tilting and uneven force on the slings during hoisting, a hoisting structure of "central main hoisting disc + multiple branch slings" is usually adopted. Leveling is achieved by adjusting the length of the branch slings or the position of the hoisting points.

[0003] Current lifting devices achieve leveling by adjusting the length of individual slings or the position of lifting points. This process typically involves manual adjustment of each sling individually, requiring repeated adjustments by operators. This is not only time-consuming and labor-intensive but also reliant on operator experience, easily leading to insufficient leveling accuracy and uneven sling stress. Furthermore, the adjustment of multiple slings can cause interference, resulting in a "left-right tilt" phenomenon, severely impacting lifting efficiency and safety. While some systems employ multi-power source electronic control for easier manual adjustment, achieving automatic leveling requires multiple motors, sensors, and electronic control systems, significantly increasing equipment costs. Therefore, there is an urgent need to design a lifting device that is low-cost and provides excellent lifting balance to address these existing problems. Summary of the Invention

[0004] Based on this, the purpose of this invention is to provide a hoisting and balancing device for precast concrete components, which fundamentally solves the problem that current hoisting devices require repeated adjustments by operators, which is not only time-consuming and labor-intensive, but also relies on the experience of operators and is prone to problems such as insufficient leveling accuracy and uneven force on the slings.

[0005] According to an embodiment of the present invention, a lifting and balancing device for precast concrete components is installed on a crane and includes a hanging assembly connected to the crane at the top, a lifting platform assembly disposed on the side of the hanging assembly away from the crane, a lifting assembly disposed at the top center of the lifting platform assembly, a plurality of main lifting components connected to the lifting assembly and used for lifting precast concrete components, and a locking assembly disposed at the bottom center of the lifting platform assembly. The length of the main lifting components on the lifting assembly is adjustable, and the locking assembly is used to fasten the adjusted main lifting components. The hoisting assembly includes a drive unit, a plurality of rope reels sleeved on the outer surface of the drive unit for retrieving at least a portion of the main hoisting component, and a differential shaft disposed between the rope reels and the drive unit. Specifically, when the rope reel sequentially retracts the main lifting component and the precast concrete component via the differential shaft, if the tension on the main lifting component exceeds the tension threshold of the differential shaft, the differential shaft slips based on the drive unit. After the other differential shafts slip simultaneously, the locking assembly locks the main lifting component to ensure that each main lifting component is subjected to balanced forces.

[0006] Furthermore, the hoisting assembly includes a plurality of first rope fixing ends fixedly disposed at the perimeter of the hoisting plate assembly, a first rope connected to the first rope fixing ends, a lifting end disposed on the side of the first rope away from the first rope fixing ends, a hoisting plate disposed on the top of the lifting end, and a plurality of second rope fixing ends disposed at the top perimeter of the hoisting plate for connecting to a hoisting machine.

[0007] Furthermore, the lifting platform assembly includes a central plate for supporting the lifting assembly and the locking assembly, at least four load-bearing rods extending outward along the circumference of the central plate, and a lifting and stabilizing assembly surrounding the load-bearing rods on the side away from the central plate.

[0008] Furthermore, the lifting and stabilizing assembly includes a first lifting ring connected to the load-bearing rod, at least six connecting beams extending outward along the circumference of the first lifting ring, and a second lifting ring connected to the connecting beams on the side away from the first lifting ring.

[0009] Furthermore, the second lifting ring and the connecting beam are provided with interconnected sliding grooves. A sliding part is slidably arranged in the sliding groove. A stabilizing hook is provided on the side of the sliding part away from the sliding groove. The sliding part can drive the stabilizing hook to slide along the track of the sliding groove, so that the concrete precast component can be auxiliaryly hooked after the main lifting component is locked, thus ensuring the stability of the concrete precast component.

[0010] Furthermore, the main lifting component includes a second rope wound around the rope reel, and a load-bearing hook disposed at one end of the second rope for attaching and lifting the precast concrete component.

[0011] Furthermore, the locking assembly includes a locking shaft fixedly connected to the load-bearing rod, a second motor fixedly connected to the central disc, and a linkage rod movably connected to the output end of the second motor. The side of the linkage rod away from the second motor is drivenly connected to the locking shaft.

[0012] Furthermore, the drive unit includes a first motor, a drive shaft connected to the output end of the first motor, and a plurality of linkage shaft discs sleeved on the circumference of the drive shaft, the linkage shaft discs being embedded in the differential shaft for transmission connection.

[0013] Furthermore, the hoisting assembly also includes a fixed housing that is fixedly connected to the central plate. The first motor is fixedly mounted on the top of the fixed housing, and the fixed housing has a plurality of accommodating through holes in its circumferential direction for the second rope to pass through.

[0014] A hoisting and balancing method for precast concrete components according to an embodiment of the present invention is used to operate the hoisting and balancing device for precast concrete components described in the present invention, the method comprising: Connect and secure the hoisting assembly to the crane, ensuring that the hoisting platform assembly and the hoisting assembly remain horizontal. Pull out multiple main lifting components to the rope take-up reel and attach them to the pre-set lifting points of the precast concrete components; The drive unit of the hoisting assembly is started, which drives multiple rope take-up reels to rotate synchronously to retrieve each main hoisting component, thereby slowly lifting the precast concrete component. During the process of retrieving the main hoisting component and lifting the precast concrete component by the rope take-up reels, when the tension on a certain main hoisting component exceeds the tension threshold of the corresponding differential shaft, the differential shaft corresponding to the main hoisting component slips relative to the drive unit, and the rope take-up reel corresponding to the differential shaft stops retrieving the main hoisting component. Continue to drive the drive unit to rotate until the tension on all other main lifting components exceeds the preset tension threshold of the corresponding differential shaft. All differential shafts slip relative to the drive unit. At this time, the forces on each main lifting component are balanced, and the precast concrete component is leveled. Activate the locking assembly to tighten and lock all adjusted main lifting components to prevent the length of the main lifting components from shifting, so that the main lifting components always maintain force balance and complete the hoisting and leveling operation of the precast concrete components.

[0015] Compared with the prior art, the concrete precast component hoisting balancing device in the above embodiments of the present invention uses a differential shaft to enable the rope reel to sequentially retrieve the main hoisting component and the concrete precast component. When the tension on the main hoisting component exceeds the tension threshold of the differential shaft, the differential shaft slips based on the drive unit. After the other differential shafts slip simultaneously, the locking assembly locks the main hoisting component, ensuring that each main hoisting component is subjected to balanced forces, thereby ensuring the stability of subsequent hoisting. This solves the problem that current hoisting devices require repeated adjustments by operators, which is not only time-consuming and labor-intensive, but also relies on the operator's experience and is prone to problems such as insufficient leveling accuracy and uneven force on the slings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the hoisting and balancing device for precast concrete components in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the other side of the overall structure of the hoisting and balancing device for precast concrete components in Embodiment 1 of the present invention; Figure 3 This is a partial structural diagram of the lifting platform assembly in the lifting and balancing device for precast concrete components according to Embodiment 1 of the present invention; Figure 4 This is a partial structural diagram of the hoisting assembly in the hoisting and balancing device for precast concrete components according to Embodiment 1 of the present invention; Figure 5 This is a partial exploded structural diagram of the hoisting assembly in the hoisting and balancing device for precast concrete components according to Embodiment 1 of the present invention; Figure 6 This is a partial structural diagram of the locking component in the hoisting and balancing device for precast concrete components according to Embodiment 1 of the present invention; Figure 7 This is a flowchart of the hoisting and balancing method for precast concrete components in Embodiment 2 of the present invention.

[0017] Explanation of key component symbols:

[0018] The following detailed description of the embodiments will further illustrate the present invention in conjunction with the above-described accompanying drawings. Detailed Implementation

[0019] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of the invention are illustrated in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0020] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Example 1 Please see Figures 1 to 6 The image shows a hoisting and balancing device for precast concrete components according to the first embodiment of the present invention. It is mounted on a crane and includes a hanging assembly connected to the crane at the top, a lifting platform assembly 1 located on the side of the hanging assembly away from the crane, a hoisting assembly 2 located at the top center of the lifting platform assembly 1, multiple main lifting components 12 connected to the hoisting assembly 2 and used for hoisting the precast concrete components, and a locking assembly located at the bottom center of the lifting platform assembly 1. The length of the main lifting components 12 on the hoisting assembly 2 is adjustable, and the locking assembly is used to secure the adjusted main lifting components 12. The assembly 2 includes a drive unit, a plurality of rope reels 24 sleeved on the outer surface of the drive unit for retrieving at least part of the main lifting component 12, and a differential shaft 25 disposed between the rope reels 24 and the drive unit. The differential shaft 25 enables the rope reels 24 to sequentially retrieve the main lifting component 12 and the precast concrete component. When the tension on the main lifting component 12 exceeds the tension threshold of the differential shaft 25, the differential shaft 25 slips based on the drive unit. After the other differential shafts 25 slip simultaneously, the locking assembly locks the main lifting component 12 to ensure that each main lifting component 12 is subjected to balanced forces.

[0023] Furthermore, the lifting assembly includes multiple first rope fixing ends 3 fixedly disposed around the perimeter of the lifting platform assembly 1, first ropes 4 connected to the first rope fixing ends 3, lifting ends 5 disposed on the side of the first ropes 4 away from the first rope fixing ends 3, lifting platforms 6 disposed on the top of the lifting ends 5, and multiple second rope fixing ends 7 disposed around the top perimeter of the lifting platform 6 for connecting to the crane. The lifting platform assembly 1 includes a central plate 101 for supporting the lifting assembly 2 and the locking assembly, at least four load-bearing rods 102 extending outward circumferentially along the central plate 101, and A lifting and stabilizing assembly is mounted around the side of the load-bearing rod 102 away from the central plate 101. The assembly includes a first lifting ring 103 connected to the load-bearing rod 102, at least six connecting beams 104 extending outwards circumferentially from the first lifting ring 103, and a second lifting ring 105 connected to the connecting beams 104 away from the first lifting ring 103. The first lifting ring 103, the second lifting ring 105, and the connecting beams 104 are provided with interconnected grooves 106. A sliding part 10 is slidably disposed within the groove 106, and a stabilizing hook 1 is provided on the side of the sliding part 10 away from the groove 106. 1. The sliding part 10 can drive the stabilizing hook 11 to slide along the track of the slide groove 106, so that the concrete precast component can be auxiliaryly hooked after the main lifting component 12 is locked, ensuring the stability of the concrete precast component. The main lifting component 12 includes a second rope 122 wound on the rope take-up reel 24, and a load-bearing hook 123 set at one end of the second rope 122 for hooking and lifting the concrete precast component. The locking assembly includes a locking shaft 121 fixedly connected to the load-bearing rod 102, a second motor 8 fixedly connected to the central plate 101, and a component movable at the output end of the second motor 8. The connecting rod 9 is connected to the locking shaft 121 on the side away from the second motor 8. The drive unit includes a first motor 21, a drive shaft 22 connected to the output end of the first motor 21, and a plurality of linkage shaft discs 23 sleeved on the circumference of the drive shaft 22. The linkage shaft discs 23 are embedded in the differential shaft 25 for transmission connection. The hoisting assembly 2 also includes a fixed sleeve 26 fixedly connected to the center disc 101. The first motor 21 is fixedly installed on the top of the fixed sleeve 26. The fixed sleeve 26 has a plurality of accommodating through holes for the second rope 122 to pass through.

[0024] It should be noted that for the structural assembly of the hoisting balancing device for precast concrete components, the operator can secure the rope to the crane via the second rope fixing end 7. The second rope fixing end 7 includes a steel cable ring internally fixed to the lifting plate 6, and a sleeve fitted over the outer surface of the steel cable ring. During installation, the operator can first pass the crane rope through the sleeve and wrap it around the steel cable ring for securing, then tighten the sleeve. The inner wall of the sleeve has an inwardly protruding rubber damping structure, which can also compress the securing rope, thereby increasing the rope strength by applying pressure at the securing position. Similarly, the connection and installation methods for the first rope fixing end 3 and the first rope 4 are the same, as are the connection and installation methods for the sliding part 10 and the stabilizing hook 11, and the connection and installation methods for the second rope 122 and the load-bearing hook 123 are also the same. The connection and installation method is the same. Furthermore, the lifting end 5 is internally equipped with at least six hook structures that are tied to the first rope 4. The operator removes the connection between the outer shell of the lifting end 5 and the lifting plate 6, and then sequentially passes the first rope 4 through the outer shell and ties it to the hooks before reinstalling the outer shell and the lifting plate 6. In some optional embodiments, the above-mentioned installation of the rope includes, but is not limited to, tying installation. It can also be welding, clamping, or integral molding design with the corresponding component, depending on the rope material. The end of the second rope 122 away from the load-bearing hook 123 is connected to the rope take-up reel 24 by fixing and winding, so that the second rope 122 has a take-up and take-up effect. The above installation methods are all understandable to those skilled in the art, and the specific structure will not be described in detail here.

[0025] In the specific implementation of the precast concrete component hoisting and balancing device proposed in this application, firstly, the operator can use a crane to lower the hoisting and balancing device to within 30-50cm directly above the precast concrete component to be hoisted. Then, the hoisting assembly 2 is activated via a controller. In some optional embodiments of this invention, the controller can be located at any convenient position on the hoisting platform assembly 1, and the controller can be an MCU (Microcontroller Unit) chip to achieve overall control of the precast concrete component hoisting and balancing device. The controller can also be electrically connected to the precast concrete component hoisting and balancing device or a matching crane. Electrical connections include wired and wireless connections. Wireless connections include, but are not limited to, Bluetooth, WiFi, IF radio frequency, and Zigbee. Wired connections include, but are not limited to, a network communication line connecting the precast concrete component hoisting and balancing device to the controller. Afterward, the first motor 21 is activated. In some optional embodiments, the first motor 21... It can be a servo motor with bidirectional drive, which sequentially drives the drive shaft 22, linkage disc 23, differential shaft 25, and rope winding disc 24 at its drive end to rotate axially, so that the second rope 122 moves towards or away from the concrete precast component to be lifted below. The lowering stroke of the second rope 122 is set according to the lowest preset lifting point of the concrete precast component to be lifted, so that all four second ropes 122 are lowered simultaneously. Then, the operator can sequentially attach the load-bearing hook 123 to the preset lifting point position of the concrete precast component to be lifted, and control the motor 21 to wind it up after the attachment is completed. During the process, the lowest position is located at the bottom. The second rope 122 at the lifting point is wound and taut, and slips along the outer surface of the linkage disc 23 after the tightening force exceeds the resistance threshold of the differential shaft 25. Understandably, the rope reel 24 located at the differential shaft 25 will not retract the second rope 122. The resistance threshold can be set, but is not limited to, one-tenth of the current lifting load or one-third of the maximum tensile force that the second rope 122 can withstand. This is to ensure that the second rope 122 can be fully taut during lifting, ensuring uniform force distribution on each subsequent second rope 122 during the lifting process. In some optional embodiments, the differential shaft 25 can slip along the outer surface of the linkage disc 23. Multiple ropes 122 are coaxially mounted within the linkage disc 23 to lift heavy objects. Then, the second ropes 122 located at the upper lifting point are retrieved by the rope take-up disc 24. Each rope 122 slips and rotates on its corresponding differential shaft 25 after exceeding the resistance threshold, until all second ropes 122 are fully taut. The determination of full tautness can be based on the maximum length of the second ropes 122 as lowered, combined with the current take-up speed of the rope take-up disc 24 to determine the required take-up time. Once the required time is met, it indicates that all second ropes 122 are taut, and the locking assembly is opened via the controller. Specifically…The four linkage rods 9 at the top are driven by the second motor 8 to move towards or away from the locking shaft 121. It should be noted that the second motor 8 acts as the drive source for the linkage rods 9, and the locking shaft 121 at the other end limits the linkage rods 9 to perform a linkage movement. This causes the linkage rods 9 to drive the outer shaft of the locking shaft 121 through gear transmission. The rotation of the shaft drives the inner retaining ring of the locking shaft 121 to retract, thereby locking the inner second rope 122. Alternatively, in some optional embodiments of the invention, the linkage rods 9 can be embedded within the locking shaft 121, moving towards the second rope 122 within the locking shaft 121 under the drive of the second motor 8 and pressing its outer surface, thus achieving the same locking operation. Finally, the operator can control the crane to lift the precast concrete component, ensuring uniform force on each second rope 122 during the process, and ensuring the stability of the precast component and the lifting equipment during hoisting.

[0026] In addition, in some optional embodiments of the present invention, in order to further improve the stability of the precast concrete component during hoisting, such as the swaying of the precast concrete component due to wind resistance in special environments, after the main hoisting component 12 is locked, the operator can slide the precast concrete component along the trajectory of the slide groove 106 to the designated position through the sliding part 10 according to the other preset point positions of the precast concrete component, and then drive the stabilizing hook 11 to engage with the preset point of the precast concrete component, thereby increasing the contact points with the precast concrete component. As for the fixing method between the sliding part 10 and the slide groove 106, at least one bolt can be passed through the sliding part 10, and the bolt abuts against the inner wall of the slide groove 106 after passing through the sliding part 10 to achieve the purpose of tensioning, which greatly ensures the stability of the precast concrete component during hoisting, so as to avoid the swaying and instability caused by environmental factors during the hoisting process.

[0027] In summary, the concrete precast component lifting and balancing device in the above embodiments of the present invention, through the differential shaft 25, enables the rope reel 24 to sequentially retrieve the main lifting component 12 and the concrete precast component. When the tension on the main lifting component 12 exceeds the tension threshold of the differential shaft 25, the differential shaft 25 slips based on the drive unit. After the other differential shafts 25 slip simultaneously, the locking assembly locks the main lifting component 12, ensuring that each main lifting component 12 is subjected to balanced forces, thereby ensuring the stability of subsequent lifting. This solves the problem that current lifting devices require repeated adjustments by operators, which is not only time-consuming and labor-intensive, but also relies on the operator's experience and is prone to insufficient leveling accuracy and uneven force on the slings.

[0028] Example 2 Please see Figure 7 The image shows a hoisting and balancing method for precast concrete components according to the second embodiment of the present invention, used in a hoisting and balancing device for precast concrete components. The method specifically includes steps S01-S05: Step S01: Connect and secure the sling assembly to the crane, ensuring that the sling assembly and the hoisting assembly remain horizontal.

[0029] Step S02: Pull out multiple main lifting components to the rope take-up reel and attach them to the preset lifting points of the precast concrete components.

[0030] Step S03: Start the drive unit of the hoisting assembly. The drive unit drives multiple rope take-up reels to rotate synchronously to retrieve each main hoisting component, thereby slowly lifting the precast concrete component. During the process of retrieving the main hoisting component and lifting the precast concrete component by the rope take-up reels, when the tension on a certain main hoisting component exceeds the tension threshold of the corresponding differential shaft, the differential shaft corresponding to the main hoisting component slips relative to the drive unit, and the rope take-up reel corresponding to the differential shaft stops retrieving the main hoisting component.

[0031] Step S04: Continue to drive the drive unit to rotate until the tension of all other main lifting parts exceeds the preset tension threshold of the corresponding differential shaft. All differential shafts slip relative to the drive unit. At this time, the main lifting parts are in equilibrium and the precast concrete component is leveled.

[0032] Step S05: Activate the locking assembly to tighten and lock all adjusted main lifting components to prevent the length of the main lifting components from shifting, so that the main lifting components always maintain force balance and complete the hoisting and leveling operation of the precast concrete components.

[0033] In summary, this hoisting operation relies on a complete set of integrated hoisting equipment. The entire process utilizes a purely mechanical differential adaptive matching method to achieve stable leveling and hoisting of the precast components. It eliminates the need for manual adjustment of the length of each component and the use of external electrical control and sensing equipment. The overall operation is simple, adaptable to complex outdoor working environments, and safe for various concrete precast component hoisting conditions. The initial stage of the operation involves setting up reference alignment.

[0034] Complete step S01 of the practical connection in a standardized manner, securely connect and lock the top hanging components of the device to the end point of the lifting equipment, straighten the overall tooling posture, accurately check the horizontal reference status of the lower hanging platform assembly and the middle lifting assembly, eliminate tooling misalignment to prevent potential safety hazards during lifting, and lay a solid foundation for subsequent leveling operations.

[0035] Subsequently, step S02, the attachment point adaptation operation, was carried out in an orderly manner. According to the factory-preset standard attachment point positions of the precast concrete components, multiple sets of matching main lifting parts were extracted from the corresponding rope reel as needed. The main lifting parts were aligned and attached to the stress points of the precast components according to specifications. The length of the lifting parts was adapted to the actual hoisting conditions on site. There was no need to accurately calibrate the uniform rope length in advance. This adapted to the different on-site attachment point requirements and reduced the difficulty of the initial setup operation.

[0036] During the core leveling operation phase, the adaptive control process of step S03 is strictly implemented. The built-in drive unit of the hoisting assembly is started at a uniform speed, and all the rope winding reels are driven to rotate synchronously and smoothly by relying on the coaxial linkage transmission structure. Each group of main lifting components is wound up and gathered at a uniform speed, and the precast concrete component is slowly lifted off the stacking base. During the lifting process, the differential shaft’s exclusive mechanical adaptation characteristics are used to automatically identify the real-time load of each group of main lifting components. If the load of a single group of main lifting components exceeds the limit, the corresponding differential shaft will immediately trigger relative slippage self-locking, and the corresponding rope winding reel will pause the winding operation in real time, thus avoiding the problems of local overload of lifting components and unilateral tilting and deformation of precast components.

[0037] Following up on step S04, the entire domain is balanced and adapted, maintaining the drive unit at a constant speed and continuously adapting and replenishing the remaining slack main lifting components until all differential shafts of all groups reach the stress threshold synchronously and achieve full-domain slippage linkage self-locking. This naturally achieves uniform and balanced stress on all main lifting components and simultaneously completes the automatic alignment and posture setting of the precast concrete components, with no manual intervention or adjustment throughout the entire process.

[0038] Finally, the closed-loop implementation step S05 is the safety locking and finishing operation. The matching locking component at the bottom center of the lifting platform is precisely activated to press and lock all the main lifting components that have been self-adjusted in one piece. The closed loop eliminates sudden hidden dangers such as loosening of the lifting components, length deviation, and force imbalance during the entire lifting and transportation process. It ensures the stability of the precast component's posture and compliance with force throughout the process, and efficiently completes the entire set of standardized safety leveling and lifting operations.

[0039] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A lifting and balancing device for precast concrete components, mounted on a crane, characterized in that, The system includes a hanging assembly connected to a crane at the top, a lifting platform assembly located on the side of the hanging assembly away from the crane, a lifting assembly located at the top center of the lifting platform assembly, multiple main lifting components connected to the lifting assembly and used for lifting precast concrete components, and a locking assembly located at the bottom center of the lifting platform assembly. The main lifting components are adjustable in length on the lifting assembly, and the locking assembly is used to secure the adjusted main lifting components. The hoisting assembly includes a drive unit, a plurality of rope reels sleeved on the outer surface of the drive unit for retrieving at least a portion of the main hoisting component, and a differential shaft disposed between the rope reels and the drive unit. Specifically, when the rope reel sequentially retracts the main lifting component and the precast concrete component via the differential shaft, if the tension on the main lifting component exceeds the tension threshold of the differential shaft, the differential shaft slips based on the drive unit. After the other differential shafts slip simultaneously, the locking assembly locks the main lifting component to ensure that each main lifting component is subjected to balanced forces.

2. The hoisting and balancing device for precast concrete components according to claim 1, characterized in that, The hoisting assembly includes a plurality of first rope fixing ends fixedly disposed at the perimeter of the hoisting plate assembly, a first rope connected to the first rope fixing ends, a lifting end disposed on the side of the first rope away from the first rope fixing ends, a hoisting plate disposed on the top of the lifting end, and a plurality of second rope fixing ends disposed at the top perimeter of the hoisting plate for connecting to a hoisting machine.

3. The hoisting and balancing device for precast concrete components according to claim 2, characterized in that, The lifting platform assembly includes a central plate for supporting the lifting assembly and the locking assembly, at least four load-bearing rods extending outward along the circumference of the central plate, and a lifting and stabilizing assembly surrounding the load-bearing rods on the side away from the central plate.

4. The hoisting and balancing device for precast concrete components according to claim 3, characterized in that, The lifting and stabilizing assembly includes a first lifting ring connected to the load-bearing rod, at least six connecting beams extending outward along the circumference of the first lifting ring, and a second lifting ring connected to the connecting beams on the side away from the first lifting ring.

5. The hoisting and balancing device for precast concrete components according to claim 4, characterized in that, The second lifting ring and the connecting beam are provided with interconnected sliding grooves. A sliding part is slidably arranged in the sliding groove. A stabilizing hook is provided on the side of the sliding part away from the sliding groove. The sliding part can drive the stabilizing hook to slide along the track of the sliding groove, so that the concrete precast component can be auxiliaryly hooked after the main lifting component is locked, ensuring the stability of the concrete precast component.

6. The hoisting and balancing device for precast concrete components according to claim 5, characterized in that, The main lifting component includes a second rope wound around the rope take-up reel, and a load-bearing hook located at one end of the second rope for attaching and lifting the precast concrete component.

7. The hoisting and balancing device for precast concrete components according to claim 6, characterized in that, The locking assembly includes a locking shaft fixedly connected to the load-bearing rod, a second motor fixedly connected to the central disc, and a linkage rod movably connected to the output end of the second motor. The linkage rod is drivenly connected to the locking shaft on the side away from the second motor.

8. The hoisting and balancing device for precast concrete components according to claim 7, characterized in that, The drive unit includes a first motor, a drive shaft connected to the output end of the first motor, and a plurality of linkage shaft discs sleeved on the circumference of the drive shaft. The linkage shaft discs are embedded in the differential shaft for transmission connection.

9. The hoisting and balancing device for precast concrete components according to claim 8, characterized in that, The hoisting assembly also includes a fixed housing that is fixedly connected to the central plate. The first motor is fixedly installed on the top of the fixed housing. The fixed housing has a plurality of accommodating through holes in its circumferential direction for the second rope to pass through.

10. A method for hoisting and balancing precast concrete components, characterized in that, The method for operating the hoisting and balancing device for precast concrete components according to any one of claims 1 to 9 comprises: Connect and secure the hoisting assembly to the crane, ensuring that the hoisting platform assembly and the hoisting assembly remain horizontal. Pull out multiple main lifting components to the rope take-up reel and attach them to the pre-set lifting points of the precast concrete components; The drive unit of the hoisting assembly is started, which drives multiple rope take-up reels to rotate synchronously to retrieve each main hoisting component, thereby slowly lifting the precast concrete component. During the process of retrieving the main hoisting component and lifting the precast concrete component by the rope take-up reels, when the tension on a certain main hoisting component exceeds the tension threshold of the corresponding differential shaft, the differential shaft corresponding to the main hoisting component slips relative to the drive unit, and the rope take-up reel corresponding to the differential shaft stops retrieving the main hoisting component. Continue to drive the drive unit to rotate until the tension on all other main lifting components exceeds the preset tension threshold of the corresponding differential shaft. All differential shafts slip relative to the drive unit. At this time, the forces on each main lifting component are balanced, and the precast concrete component is leveled. Activate the locking assembly to tighten and lock all adjusted main lifting components to prevent the length of the main lifting components from shifting, so that the main lifting components always maintain force balance and complete the hoisting and leveling operation of the precast concrete components.

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