Adjustable balance lifting tool for prefabricated component based on BIM

Abstract

This invention discloses an adjustable balancing hoist for prefabricated components based on BIM, comprising two symmetrically arranged support mechanisms, a hoisting mechanism, and a control unit. The support mechanisms include a lifting drive assembly and a lockable foldable support frame. The hoisting mechanism includes a spacing adjustment assembly and two sets of synchronously controllable hoisting components. The control unit integrates BIM data interaction, multi-axis synchronous control, hoisting balance monitoring, and safety interlocking modules. This invention can be deeply adapted to BIM systems, enabling digital automatic adjustment of hoisting parameters and dynamic balance control during the hoisting process. It can also be quickly folded and stored, combining high adjustment accuracy, high operational efficiency, and high safety performance, making it widely applicable to the hoisting operations of various prefabricated components.

Description

Technical Field

[0001] This invention relates to the field of prefabricated building hoisting equipment technology, and more specifically, to an adjustable balancing hoist for hoisting prefabricated components based on BIM. Background Technology

[0002] In prefabricated building construction systems, the hoisting of prefabricated components is a core process. The adaptability, adjustment precision, and safety performance of the hoisting equipment directly determine the efficiency, accuracy, and construction safety of the hoisting operation. Currently, the construction industry has widely adopted BIM technology to achieve digital management of the entire lifecycle of prefabricated components, from design modeling and production to on-site construction. Through BIM models, the type, size, weight, and other specifications of prefabricated components can be accurately obtained, while simultaneously completing the digital planning of hoisting paths, hoisting heights, and construction site layouts.

[0003] However, existing precast component hoisting tools and BIM technology suffer from serious compatibility issues and still have many technical shortcomings:

[0004] Existing lifting equipment lacks digital adaptation design and cannot be flexibly adjusted according to the specifications and parameters of prefabricated components in the BIM model. Due to the diverse types, sizes, and weights of prefabricated components, multiple specifications of lifting equipment are required for corresponding lifting operations. Frequent changes in lifting equipment not only disrupt the continuous construction process guided by BIM technology but also significantly reduce lifting and construction efficiency. Furthermore, existing lifting equipment lacks digital height adjustment functionality, making it impossible to accurately adjust the overall height based on the lifting height and lifting path planned in the BIM construction model, resulting in poor adaptability. At the same time, existing lifting equipment has a fixed structure, cannot be folded and stored, occupies a large amount of space, and contradicts the concept of digital planning and efficient space utilization of construction sites advocated by BIM technology, increasing storage and transportation costs on the construction site. Summary of the Invention

[0005] The purpose of this invention is to address the problems mentioned in the background section by providing an adjustable balancing hoist for prefabricated components based on BIM. This hoist is adaptable to various specifications of prefabricated components, eliminates the need for frequent hoisting changes, ensures the continuity of the construction process under BIM guidance, and significantly improves hoisting efficiency.

[0006] The present invention adopts the following technical solution:

[0007] An adjustable balancing hoist for lifting prefabricated components based on BIM includes two sets of symmetrically arranged support mechanisms, lifting mechanisms, and control units;

[0008] A hoisting mechanism is provided on the top of both support mechanisms;

[0009] The support mechanism includes a base, a support frame, a lifting drive assembly, and a status locking assembly. The support frame is rotatably connected to the center of the upper surface of the base via a rotating shaft. A circular hole is provided on the top of the support frame, and a through slot is provided on the lower inner side of the circular hole. The power output end of the lifting drive assembly is connected to the hoisting mechanism. The status locking assembly is installed between the support frame and the base.

[0010] A screw is rotatably connected to the inner side of the circular hole via a rotating shaft, and a gear is fixedly connected to the outer wall of the screw and located inside the through groove.

[0011] The hoisting mechanism includes a U-shaped frame, a spacing adjustment component, and a hoisting component. The top ends of the two screws respectively penetrate into the interior of the U-shaped frame and are threadedly connected to the U-shaped frame.

[0012] The spacing adjustment component is installed on the inner side of the U-shaped frame. Both sets of hoisting components are fixedly connected to the power output end of the spacing adjustment component. The spacing adjustment component is used to drive the two sets of hoisting components to move towards or away from each other in the horizontal direction, thereby adjusting the horizontal spacing between the two sets of hoisting components.

[0013] The hoisting assembly includes a concave frame, with two concave frames arranged on the inner side of the U-shaped frame. A winding drum is rotatably connected to the inner side of the concave frame via a rotating shaft. A hoisting rope is fixedly connected to the outer wall of the winding drum, and a hook is fixedly connected to the bottom end of the hoisting rope.

[0014] The control unit is electrically connected to the lifting drive assembly and the spacing adjustment assembly, respectively.

[0015] Furthermore, the control unit includes a BIM data interaction module, a multi-axis synchronous control module, a hoisting balance monitoring module, and a safety interlock module. The BIM data interaction module is used to communicate with an external BIM system and read the specifications and hoisting construction planning data of the precast components. The multi-axis synchronous control module is electrically connected to the lifting drive assembly and the spacing adjustment assembly, respectively, and is used to synchronously control each actuator to complete the adjustment action according to the parameters issued by the BIM data. The hoisting balance monitoring module is used to collect the attitude and load data in real time during the hoisting process, and the multi-axis synchronous control module dynamically adjusts each actuator according to the attitude and load data to maintain hoisting balance. The safety interlock module is used to realize the safety protection and fault shutdown of the entire process.

[0016] Furthermore, two omnidirectional wheels are fixedly connected to the bottom of the base.

[0017] Furthermore, positioning seats are fixedly connected to the opposite sides of the two bases, and positioning holes are provided on the opposite sides of the two bases and behind the support frame.

[0018] Furthermore, mounting sleeves are fixedly connected to the opposite sides of the two support frames. A positioning post is slidably connected to the inner side of the mounting sleeve. A spring is fixedly connected between the positioning post and the mounting sleeve. The bottom end of the positioning post is inserted into the interior of the positioning seat. The two bases are parallel to each other.

[0019] Furthermore, a motor is fixedly connected to the front surface of the support frame, and a gear is fixedly connected to the bottom end of the output shaft of the motor. The outer side wall of the gear is meshed with the outer side wall of the gear.

[0020] Furthermore, motor 2 is fixedly connected to the opposite sides of the two concave frames, and the opposite ends of the output shafts of the two motor 2 are respectively fixedly connected to the opposite ends of the central shafts of the two take-up drums.

[0021] Furthermore, a groove is provided on the inner upper surface of the U-shaped frame, and a bidirectional lead screw is rotatably connected to the inner side of the groove via a rotating shaft. Two lead screw sleeves are threaded onto the outer wall of the bidirectional lead screw, and the bottom of the lead screw sleeves is fixedly connected to the top of the concave frame. A motor is fixedly connected to the left side of the U-shaped frame, and the right end of the output shaft of the motor is fixedly connected to the left end of the bidirectional lead screw.

[0022] Beneficial effects

[0023] This invention is highly compatible with BIM technology. It can combine the specifications and parameters of prefabricated components and construction hoisting planning data obtained from BIM modeling to precisely adjust the hook spacing, hoisting height and overall hoisting equipment height, thereby achieving digital matching between hoisting equipment parameters and BIM model data. This ensures that hoisting operations strictly follow the BIM construction plan and improves the digitalization and standardization of prefabricated building construction.

[0024] Driven by a motor and gear transmission, the screw and hoisting mechanism work together to achieve lifting and lowering. The overall height of the hoisting equipment can be precisely adjusted according to different hoisting heights and hoisting paths planned in the BIM construction model, adapting to the height requirements of the entire hoisting process of prefabricated components, and improving the adaptability, flexibility and accuracy of hoisting operations and BIM construction schemes.

[0025] By cooperating with positioning columns, springs, positioning seats, and positioning holes, the limit on the support frame can be quickly released and folding positioning can be completed, effectively reducing the space occupied by the device, meeting the requirements of BIM technology for digital space planning of construction sites, significantly reducing the storage and transportation costs of lifting equipment, and improving the space utilization rate of construction sites.

[0026] With the help of the casters at the bottom of the base, the device can be easily pushed to the designated hoisting position planned in the BIM model, reducing the manpower and time costs of handling the hoisting equipment. Combined with the quick adjustment function of the hoisting equipment, it ensures the continuity of hoisting construction under the guidance of BIM technology and significantly improves the overall work efficiency.

[0027] The overall structural design is scientific, and the components work together in a coordinated manner. The hook spacing and hoisting height can be precisely adjusted according to BIM model data, so that the precast components are always in a balanced hoisting state. It takes into account both hoisting stability and ease of operation, and is suitable for hoisting scenarios of various precast components under the guidance of BIM technology. It has strong practicality and safety. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram from another perspective of an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the support mechanism according to an embodiment of the present invention;

[0031] Figure 4 This is a side view of the support mechanism according to an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the support frame according to an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the hoisting mechanism according to an embodiment of the present invention;

[0034] Figure 7 This is a partial cross-sectional structural schematic diagram of a hoisting mechanism according to an embodiment of the present invention.

[0035] In the diagram: 1. Support mechanism; 2. Lifting mechanism; 101. Base; 102. Support frame; 103. Round hole; 104. Through groove; 105. Screw; 106. Gear 1; 107. Caster wheel; 108. Positioning seat; 109. Positioning hole; 110. Mounting sleeve; 111. Positioning column; 112. Spring; 113. Motor 1; 114. Gear 2; 201. U-shaped frame; 202. Concave frame; 203. Winding drum; 204. Lifting rope; 205. Hook; 206. Motor 2; 207. Groove; 208. Two-way lead screw; 209. Lead screw sleeve; 210. Motor 3. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0037] This invention discloses an adjustable balancing hoist for prefabricated components based on BIM, comprising two sets of symmetrically arranged support mechanisms, hoisting mechanisms, and control units;

[0038] A hoisting mechanism 2 is provided on the top of both support mechanisms 1;

[0039] The support mechanism 1 includes a base 101, a support frame 102, a lifting drive assembly, and a status locking assembly. The support frame 102 is rotatably connected to the center of the upper surface of the base 101 via a pivot. The top of the support frame 102 has a circular hole 103, and the lower inner side of the circular hole 103 has a through slot 104. The power output end of the lifting drive assembly is connected to the hoisting mechanism for driving the hoisting mechanism to lift vertically. The status locking assembly is installed between the support frame and the base for locking the working state or folded storage state of the support frame.

[0040] A screw 105 is rotatably connected to the inner side of the circular hole 103 via a rotating shaft, and a gear 106 is fixedly connected to the outer wall of the screw 105 and located inside the through groove 104.

[0041] The hoisting mechanism 2 includes a U-shaped frame 201, a spacing adjustment component, and a hoisting component. The top ends of the two screws 105 respectively penetrate into the interior of the U-shaped frame 201 and are threadedly connected to the U-shaped frame 201.

[0042] The spacing adjustment component is installed on the inner side of the U-shaped frame 201. Both sets of hoisting components are fixedly connected to the power output end of the spacing adjustment component. The spacing adjustment component is used to drive the two sets of hoisting components to move towards or away from each other in the horizontal direction, thereby adjusting the horizontal spacing between the two sets of hoisting components.

[0043] The hoisting assembly includes a concave frame 202. Two concave frames 202 are provided on the inner side of the U-shaped frame 201. A winding drum 203 is rotatably connected to the inner side of the concave frame 202 via a rotating shaft. A hoisting rope 204 is fixedly connected to the outer wall of the winding drum 203. A hook 205 is fixedly connected to the bottom end of the hoisting rope 204.

[0044] The control unit is electrically connected to the lifting drive assembly and the spacing adjustment assembly, respectively.

[0045] In one embodiment of the present invention, the control unit adopts an industrial-grade programmable controller as its core, including a BIM data interaction module, a multi-axis synchronous control module, a hoisting balance monitoring module, and a safety interlocking module.

[0046] The BIM data interaction module supports standard industrial communication protocols such as OPC UA and Modbus TCP. It can communicate with external BIM systems and smart construction site platforms via wired Ethernet or wireless communication modules, directly read the specifications of prefabricated components in the BIM model (including lifting point spacing, component weight, component size, etc.), as well as hoisting construction planning data (including hoisting height, hoisting path, work points, etc.), and transmit the data to the multi-axis synchronous control module. At the same time, it can transmit the operating status of the hoisting equipment and hoisting process data back to the BIM system, realizing digital closed-loop management of the entire construction process.

[0047] The multi-axis synchronous control module is the core of the control system. It is electrically connected to the lifting drive motor 113, the spacing adjustment motor 210, and the retraction servo motor 206. It has built-in electronic gears and synchronous motion control algorithms. Based on the parameters sent by the BIM data interaction module, it can automatically calculate the adjustment amount of each actuator and synchronously control each motor to complete the precise adjustment action. At the same time, based on the real-time data collected by the hoisting balance monitoring module, it can dynamically fine-tune the output of each motor to achieve dynamic balance adjustment during the hoisting process.

[0048] The hoisting balance monitoring module includes a dual-axis tilt sensor and a tension sensor. The dual-axis tilt sensor is installed at the center of the U-shaped frame 201, and a portable sensor that can be fixed to the hoisting point of the precast component. These sensors are used to collect real-time lateral and longitudinal tilt data between the hoisting equipment and the precast component to determine if the hoisting posture is balanced. The tension sensor is installed at the connection point between the hoisting rope 204 and the lifting hook 205 to collect real-time tension load data on both sides of the hoisting ropes, determining if the load on both sides is uniform. Both the dual-axis tilt sensor and the tension sensor are electrically connected to the multi-axis synchronous control module, transmitting the collected data back in real-time to form a closed-loop control system.

[0049] The safety interlock module includes an emergency stop button, an overload protection unit, a travel limit protection unit, and a power failure braking protection unit. The emergency stop button is located on both the spreader body and the wireless remote control; pressing it immediately cuts off power to all actuators, achieving an emergency stop. The overload protection unit, based on load data collected by the tension sensor, immediately stops the machine and issues an alarm when the load exceeds the rated threshold, preventing overload operation. The travel limit protection unit is linked to each limit sensor to provide overtravel protection. The power failure braking protection unit is linked to all brake motors equipped with holding brakes; in the event of a power failure or malfunction, it immediately triggers the holding brake to lock, preventing slippage or falling.

[0050] In addition, the control unit includes a human-machine interface unit and a wireless communication module. The human-machine interface unit uses an industrial-grade touch screen display with physical operation buttons, installed on the outer wall of the support frame 102. It can display the working status, parameter data, and fault alarm information of the lifting device in real time, and also supports on-site manual parameter setting and manual control of the actions of each mechanism to meet the needs of temporary on-site adjustments. The wireless communication module uses an industrial-grade WiFi / 4G module, which can realize wireless data interaction with the BIM system. It can also be equipped with a wireless remote control, which allows on-site operators to control the lifting operation from the best observation position, improving the convenience and safety of operation.

[0051] In one embodiment of the present invention, two casters 107 are fixedly connected to the bottom of the base 101. In use, the casters 107 at the bottom of the base 101 can be used to push the entire lifting device to the designated lifting position, thereby improving the flexibility of the lifting device's movement.

[0052] In one embodiment of the present invention, positioning seats 108 are fixedly connected to the opposite sides of the two bases 101, and positioning holes 109 are provided on the opposite sides of the two bases 101 and behind the support frame 102.

[0053] In one embodiment of the present invention, mounting sleeves 110 are fixedly connected to the opposite sides of the two support frames 102. A positioning post 111 is slidably connected to the inner side of the mounting sleeve 110. A spring 112 is fixedly connected between the positioning post 111 and the mounting sleeve 110. The bottom end of the positioning post 111 is inserted into the interior of the positioning base 108. The two bases 101 are parallel to each other.

[0054] When the lifting device needs to be folded and stored, pull the positioning column 111 to slide upward along the mounting sleeve 110, compress the spring 112, so that the bottom end of the positioning column 111 is disengaged from the positioning seat 108, releasing the restriction on the support frame 102. Then rotate the support frame 102 around the pivot on the base 101 until the support frame 102 fits against the base 101. Then release the positioning column 111, and the spring 112 returns to its original position, pushing the bottom end of the positioning column 111 into the positioning hole 109, completing the folding and positioning of the support frame 102, reducing the space occupied by the lifting device, and facilitating storage and transportation.

[0055] In one embodiment of the present invention, a motor 113 is fixedly connected to the front surface of the support frame 102, and a gear 114 is fixedly connected to the bottom end of the output shaft of the motor 113. The outer side wall of the gear 114 meshes with the outer side wall of the gear 106.

[0056] When it is necessary to adjust the overall height of the lifting device to adapt to different lifting heights, start motor 113. Motor 113 drives gear 114 to rotate. Gear 114 meshes with gear 106, driving screw 105 to rotate in the round hole 103. Through the threaded engagement between screw 105 and lifting mechanism 2, the lifting mechanism 2 is raised and lowered, thereby adjusting the overall height of the lifting device.

[0057] In one embodiment of the present invention, motors 206 are fixedly connected to the opposite sides of the two concave frames 202, and the opposite ends of the output shafts of the two motors 206 are fixedly connected to the opposite ends of the central shafts of the two winding drums 203, respectively.

[0058] In one embodiment of the present invention, a groove 207 is provided on the inner upper surface of the U-shaped frame 201. A bidirectional lead screw 208 is rotatably connected to the inner side of the groove 207 via a rotating shaft. Two lead screw sleeves 209 are threadedly installed on the outer side wall of the bidirectional lead screw 208. The bottom of the lead screw sleeves 209 is fixedly connected to the top of the concave frame 202. A motor 210 is fixedly connected to the left side of the U-shaped frame 201. The right end of the output shaft of the motor 210 is fixedly connected to the left end of the bidirectional lead screw 208.

[0059] Before hoisting, the specifications of the precast components are obtained by modeling using BIM technology. Motor 3 210 is started, which drives the bidirectional lead screw 208 to rotate in the groove 207. The bidirectional lead screw 208 drives the two lead screw sleeves 209 to move relative to or towards each other, thereby driving the two concave frames 202 to move synchronously. The distance between the two hooks 205 is adjusted to adapt to precast components of different sizes without the need to change the hoisting tools.

[0060] After the spacing is adjusted, the hook 205 is connected and fixed to the precast component. Then, the two motors 206 are started. The motors 206 drive the winding drum 203 to rotate. The winding drum 203 winds up and unwinds the hoisting rope 204 to adjust the hoisting height of the precast component. At the same time, in conjunction with the height adjustment of the support mechanism 1, the precast component is kept in a balanced hoisting state, and the stable hoisting of the precast component is completed.

[0061] After hoisting is completed, reverse start motor 206, release hoisting rope 204 to reset hook 205, and then adjust double-acting screw 208 to reset concave frame 202 for easy subsequent folding and storage.

[0062] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. An adjustable balancing hoist for lifting prefabricated components based on BIM, characterized in that: It includes two sets of symmetrically arranged support mechanisms, hoisting mechanisms, and control units; A hoisting mechanism (2) is provided on the top of both of the support mechanisms (1); The support mechanism (1) includes a base (101), a support frame (102), a lifting drive assembly, and a status locking assembly. The support frame (102) is rotatably connected to the center of the upper surface of the base (101) via a rotating shaft. A circular hole (103) is provided on the top of the support frame (102), and a through slot (104) is provided on the lower inner side of the circular hole (103). The power output end of the lifting drive assembly is connected to the hoisting mechanism. The status locking assembly is installed between the support frame and the base. The inner side of the circular hole (103) is rotatably connected to a screw (105) via a rotating shaft, and a gear (106) is fixedly connected to the outer wall of the screw (105) and located inside the through groove (104). The hoisting mechanism (2) includes a U-shaped frame (201), a spacing adjustment component and a hoisting component. The top ends of the two screws (105) respectively penetrate into the interior of the U-shaped frame (201) and are threadedly connected to the U-shaped frame (201). The spacing adjustment component is installed on the inner side of the U-shaped frame (201). Both sets of hoisting components are fixedly connected to the power output end of the spacing adjustment component. The spacing adjustment component is used to drive the two sets of hoisting components to move towards or away from each other in the horizontal direction, and adjust the horizontal spacing between the two sets of hoisting components. The hoisting assembly includes a concave frame (202), and two concave frames (202) are provided on the inner side of the U-shaped frame (201). A winding drum (203) is rotatably connected to the inner side of the concave frame (202) via a rotating shaft. A hoisting rope (204) is fixedly connected to the outer wall of the winding drum (203), and a hook (205) is fixedly connected to the bottom end of the hoisting rope (204). The control unit is electrically connected to the lifting drive assembly and the spacing adjustment assembly, respectively.

2. The adjustable balancing hoist for BIM-based prefabricated component hoisting according to claim 1, characterized in that: The control unit includes a BIM data interaction module, a multi-axis synchronous control module, a hoisting balance monitoring module, and a safety interlock module. The BIM data interaction module communicates with an external BIM system to read the specifications of prefabricated components and hoisting construction planning data. The multi-axis synchronous control module is electrically connected to the lifting drive assembly and the spacing adjustment assembly, and is used to synchronously control each actuator to complete the adjustment action according to the parameters issued by the BIM data. The hoisting balance monitoring module is used to collect attitude and load data in real time during the hoisting process. The multi-axis synchronous control module dynamically adjusts each actuator according to the attitude and load data to maintain hoisting balance. The safety interlock module is used to realize safety protection and fault shutdown throughout the process.

3. The adjustable balancing hoist for BIM-based prefabricated component hoisting according to claim 1, characterized in that: The bottom of the base (101) is fixedly connected to two casters (107).

4. The adjustable balancing hoist for BIM-based prefabricated component hoisting according to claim 1, characterized in that: Positioning seats (108) are fixedly connected to the opposite sides of the two bases (101), and positioning holes (109) are opened on the opposite sides of the two bases (101) and behind the support frame (102).

5. The adjustable balancing hoist for prefabricated components based on BIM according to claim 4, characterized in that: The two support frames (102) are fixedly connected to the opposite sides of each other with mounting sleeves (110). The inner side of the mounting sleeve (110) is slidably connected with a positioning post (111). The positioning post (111) and the mounting sleeve (110) are fixedly connected with a spring (112). The bottom end of the positioning post (111) is inserted into the interior of the positioning seat (108). The two bases (101) are parallel to each other.

6. The adjustable balancing hoist for BIM-based prefabricated component hoisting according to claim 1, characterized in that: The front surface of the support frame (102) is fixedly connected to a motor (113), and the bottom end of the output shaft of the motor (113) is fixedly connected to a gear (114). The outer side wall of the gear (114) meshes with the outer side wall of the gear (106).

7. The adjustable balancing hoist for BIM-based prefabricated component hoisting according to claim 1, characterized in that: Motor 2 (206) is fixedly connected to the opposite sides of the two concave frames (202), and the opposite ends of the output shafts of the two motors (206) are fixedly connected to the opposite ends of the central shafts of the two winding drums (203).

8. The adjustable balancing hoist for prefabricated components based on BIM according to claim 1, characterized in that: The upper inner surface of the U-shaped frame (201) is provided with a groove (207). The inner side of the groove (207) is rotatably connected to a two-way lead screw (208) via a rotating shaft. Two lead screw sleeves (209) are threaded on the outer side wall of the two-way lead screw (208). The bottom of the lead screw sleeve (209) is fixedly connected to the top of the concave frame (202). A motor three (210) is fixedly connected to the left side of the U-shaped frame (201). The right end of the output shaft of the motor three (210) is fixedly connected to the left end of the two-way lead screw (208).

Images