Intelligent hoisting and positioning equipment for large prefabricated part

The motor drives the bevel shaft and bevel gear system to drive the sliding plate to move, and combines the visual identification system and electric hoist, which solves the problem that traditional equipment cannot lift prefabricated components with a large height, and achieves efficient and accurate lifting and positioning, improves work efficiency and extends the equipment life.

CN120288634APending Publication Date: 2025-07-11JIANGSU HUAXIA ENG PROJECT MANAGEMENT CO LTD
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Patent Information

Application Number
CN202510718563.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-30
Publication Date
2025-07-11

AI Technical Summary

Technical Problem

When traditional equipment lifts prefabricated components with a large height, they cannot be raised to the appropriate position. The bottom frame needs to be removed for installation, resulting in inefficiency.

Method used

The motor drives the bevel shaft and bevel gear system to drive the sliding plate to move, and combines the visual identification system and electric hoist to achieve accurate positioning and height adjustment of prefabricated components to avoid the removal of the bottom frame.

Benefits of technology

It improves the accuracy and efficiency of lifting and positioning of large prefabricated components, reduces quality accidents caused by position deviation, and extends the service life of the equipment.

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Abstract

The invention relates to the technical field of building construction automation equipment, and discloses large prefabricated part intelligent hoisting and positioning equipment which comprises a bottom frame, a motor is fixedly connected to the outer wall of the bottom frame, a first bevel gear shaft is fixedly connected to the output end of the motor, and a second bevel gear shaft is connected to the tooth end of the first bevel gear shaft in a meshed mode. A first bevel gear is fixedly connected to the middle of the outer wall of the second bevel gear shaft, a second bevel gear is fixedly connected to the outer wall of the first bevel gear, a first half-threaded column is fixedly connected to the outer wall of the second bevel gear, a fixing rod is rotatably connected to the outer wall of the first half-threaded column, and a fixing block is in threaded connection to the outer wall of the first half-threaded column. And a motor is started to drive a bevel gear shaft II of a bevel gear shaft I to rotate, and a fixed block is synchronously driven to move, so that a sliding plate moves upwards, and the effect that the bottom frame does not need to be dismantled to be additionally mounted according to different heights required by the large prefabricated part is achieved, so that the effect of improving the overall working efficiency is achieved.
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Description

Technical Field

[0001] The present invention relates to the technical field of construction automation equipment, and specifically relates to an intelligent hoisting and positioning device for large precast components. Background Art

[0002] With the acceleration of the urbanization process and the increase in various large-scale engineering construction projects, the application of large precast components in engineering fields such as construction, bridges, and ports has become increasingly widespread. Large precast components have many advantages such as improving construction efficiency, ensuring construction quality, and reducing on-site wet operations. Therefore, an intelligent hoisting and positioning device for large precast components is proposed.

[0003] However, when traditional equipment is in use, when encountering precast components with a relatively large height, it is impossible to lift the precast components upward to a suitable position, and the whole needs to be disassembled and refitted, which reduces work efficiency. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an intelligent hoisting and positioning device for large precast components, which solves the problem that when encountering precast components with a relatively large height, it is impossible to lift the precast components upward to a suitable position, and the whole needs to be disassembled and refitted, reducing work efficiency.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: An intelligent hoisting and positioning device for large precast components, including a bottom frame, an outer wall of the bottom frame is fixedly connected with a motor, an output end of the motor is fixedly connected with a bevel gear shaft one, a tooth end of the bevel gear shaft one is meshed and connected with a bevel gear shaft two, a middle part of an outer wall of the bevel gear shaft two is fixedly connected with a bevel gear one, an outer wall of the bevel gear one is fixedly connected with a bevel gear two, an outer wall of the bevel gear two is fixedly connected with a half-threaded column one, an outer wall of the half-threaded column one is rotationally connected with a fixed rod, an outer wall of the half-threaded column one is threadedly connected with a fixed block, an outer wall of the fixed block is fixedly connected with a sliding plate, an inner wall of the fixed block is slidably connected with a limiting bracket, an outer wall of the limiting bracket is fixedly connected to a periphery of an upper surface of the fixed rod, and a hoisting assembly is arranged on an outer wall of the sliding plate.

[0006] As a further description of the above solution: Start the motor serving as the driving source to drive the first bevel gear shaft to rotate. The bottom frame provides support and limit for the rotation of the first bevel gear shaft, and then drives the second bevel gear shaft meshing with the tooth end of the first bevel gear shaft to rotate, thereby driving the first bevel gear to rotate. Since the position of the second bevel gear shaft is restricted, the second bevel gear shaft always meshes with the first bevel gear shaft, and then drives the second bevel gear to rotate, and synchronously drives the first half-threaded column to rotate, and ensures that the first bevel gear and the second bevel gear always mesh, so that the fixed block rotates on the outer wall of the first half-threaded column. Since the fixed block is restricted by the limit bracket, the fixed block can only perform linear motion and will not rotate by itself, and then the sliding plate moves upward, thereby driving the multi-axis moving assembly and the electric hoist to move, so that the height of the large precast component meets the installation height, achieving that according to the different heights required by the large precast component, there is no need to demolish the bottom frame for installation, thereby achieving the effect of improving the overall work efficiency.

[0007] Preferably, the hoisting assembly includes a multi-axis moving assembly, the outer wall of the multi-axis moving assembly is fixedly connected to the outer wall of the sliding plate, and an electric hoist is fixedly connected to the outer wall of the multi-axis moving assembly.

[0008] Preferably, the outer wall of the first bevel gear shaft is rotatably connected to the inner wall of the bottom frame, and the outer wall of the second bevel gear shaft is rotatably connected to the inner wall of the bottom frame.

[0009] Preferably, the upper surface of the fixed rod is attached to the lower surface of the sliding plate, and the outer wall of the limit bracket is attached to the inner wall of the sliding plate.

[0010] Preferably, the tooth end of the first bevel gear shaft is meshed with a third bevel gear shaft, the tooth end of the third bevel gear shaft is meshed with a third bevel gear, a second half-threaded column is fixedly connected to the outer wall of the third bevel gear, a stop block is rotatably connected to the outer wall of the second half-threaded column, an auxiliary rod is rotatably connected to the outer wall of the second half-threaded column, a covering rod is threadedly connected to the second half-threaded column, a connecting block is fixedly connected to the outer wall of the covering rod, and the outer wall of the connecting block is fixedly connected to the outer wall of the sliding plate.

[0011] Preferably, the outer wall of the stop block is fixedly connected to the outer periphery of the bottom frame, and the inner wall of the covering rod is slidably connected to the outer wall of the auxiliary rod.

[0012] Preferably, the threads of the two second half-threaded columns are arranged in opposite directions, and the threaded part of the second half-threaded column has the same length as the threaded part of the first half-threaded column.

[0013] Preferably, a reinforcing plate is fixedly connected to the outer wall of the bottom frame, and the outer wall of the reinforcing plate is fixedly connected to the outer wall of the sliding plate.

[0014] Preferably, a control panel is provided on the outer wall of the bottom frame. The control panel is electrically connected to the motor. The control panel includes a visual recognition system and a control system. The visual recognition system includes a high-definition camera and an image processing unit. The high-definition camera is located at the front end of the multi-axis moving component and the camera pixel is not less than 4K. The control system uses a PLC controller, supports remote monitoring and fault diagnosis, and is used to receive signals from the visual recognition system.

[0015] Preferably, the bottom frame, the fixed block, the sliding plate, the covering rod, and the auxiliary rod are all made of Q345B steel, and the electric hoist is of a double-speed type.

[0016] Working principle: When the height of the large precast component to be hoisted is relatively high, the motor is started to drive the first bevel gear shaft to rotate, so that the fixed block rotates on the outer wall of the first half-threaded column. Since the fixed block is restricted by the limit bracket, the fixed block can only move linearly and will not rotate itself. Then the sliding plate moves upward, driving the multi-axis moving component and the electric hoist to move, so that the height of the large precast component meets the installation height, achieving the effect that it is not necessary to remove and install the bottom frame according to the different heights required by the large precast component, thereby improving the overall working efficiency. When the first bevel gear shaft is driven by the motor, it will synchronously drive the third bevel gear shaft to rotate. Through the meshing of the third bevel gear shaft and the third bevel gear, the third bevel gear shaft synchronously drives the third bevel gear to rotate, then drives the second half-threaded column to rotate, and then the second half-threaded column drives the covering rod to move, and then drives the connecting block to move, so that the connecting block also gradually moves as the sliding plate moves, achieving the effect that as the position of the sliding plate changes, the positions of the connecting block and the covering rod also change accordingly, so that both sides of the sliding plate are always prevented from being bent to both sides by the gravity of the large precast component, improving the service life of the equipment. The electric hoist starts to lower the steel wire rope until it touches the surface of the precast component to be hoisted. At this time, the visual recognition system is started. The three-dimensional coordinate information of the precast component is collected by the 4K high-definition camera and the data is transmitted to the control system. The control system calculates the optimal hoisting path according to the received data and issues corresponding instructions to the multi-axis moving component and the electric hoist to adjust their actions to achieve grasping. After the hoisting is completed, the control system continues to command the equipment to translate to the upper part of the installation point according to the preset trajectory, and uses the visual recognition technology again to correct the position deviation, and finally places the precast component steadily in place, achieving the improvement of the hoisting and positioning accuracy of the large precast component and reducing the quality accidents caused by position deviation. That is, the device can not only achieve the effect of improving the overall working efficiency by adding components without removing the bottom frame, but also achieve the effect of preventing the sliding plate from bending to both sides under the gravity of large precast components, thus improving the service life of the device. Finally, it can also achieve the effect of improving the hoisting and positioning accuracy of large precast components and reducing the quality accidents caused by position deviation. The present invention provides an intelligent hoisting and positioning device for large precast components, which has the following beneficial effects: 1. In the present invention, by starting the motor to drive the bevel gear shaft II of the bevel gear shaft I to rotate, and synchronously driving the fixed block to move, the sliding plate is moved upward, so that the height of the large precast component meets the installation height, achieving the effect of improving the overall working efficiency without removing the bottom frame for adding components according to the different heights required by the large precast component.

[0017] 2. In the present invention, when the bevel gear shaft I is driven by the motor, the bevel gear shaft III and the bevel gear III are synchronously driven to rotate, and then the half-threaded column II is driven to rotate. Further, the half-threaded column II drives the covering rod to move, and then drives the connecting block to move, so that the connecting block also gradually moves as the sliding plate moves, achieving the effect that as the position of the sliding plate changes, the positions of the connecting block and the covering rod also change, preventing the sliding plate from bending to both sides under the gravity of the large precast component and improving the service life of the device.

[0018] 3. In the present invention, the 4K high-definition camera of the visual recognition system collects the three-dimensional coordinate information of the precast component and transmits the data to the control system. The control system calculates the best hoisting path according to the received data and corrects the position deviation by using the visual recognition technology, and finally places the precast component in place smoothly, achieving the effect of improving the hoisting and positioning accuracy of the large precast component and reducing the quality accidents caused by position deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a perspective view of the present invention; Figure 2 is a partial structural schematic diagram of the motor of the present invention; Figure 3 is a partial structural schematic diagram of the stopper of the present invention; Figure 4 is a partial structural schematic diagram of the half-threaded column II of the present invention; Figure 5 is a partial structural schematic diagram of the connecting block of the present invention; Figure 6 is a partial structural schematic diagram of the bevel gear shaft II of the present invention; Figure 7Schematic cross-sectional view of the internal structure of the fixing block of the present invention; Figure 8 Schematic partial structure view of the bevel gear three of the present invention.

[0020] Among them, 1. Bottom frame; 2. Motor; 3. First bevel gear shaft; 4. Second bevel gear shaft; 5. First bevel gear; 6. Second bevel gear; 7. First half-threaded column; 8. Fixed rod; 9. Fixing block; 10. Sliding plate; 11. Limit bracket; 12. Multi-axis moving assembly; 13. Electric hoist; 14. Third bevel gear shaft; 15. Third bevel gear; 16. Stopper; 17. Second half-threaded column; 18. Auxiliary rod; 19. Coated rod; 20. Connection block; 21. Reinforcing plate; 22. Control panel. Specific implementation manners

[0021] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the specification. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to the attached Figure 1 - attached Figure 8 , an intelligent hoisting and positioning device for large precast components provided by an embodiment of the present invention includes a bottom frame 1, an outer wall of the bottom frame 1 is fixedly connected with a motor 2, an output end of the motor 2 is fixedly connected with a first bevel gear shaft 3, a tooth end of the first bevel gear shaft 3 is meshed and connected with a second bevel gear shaft 4, a middle part of an outer wall of the second bevel gear shaft 4 is fixedly connected with a first bevel gear 5, an outer wall of the first bevel gear 5 is fixedly connected with a second bevel gear 6, an outer wall of the second bevel gear 6 is fixedly connected with a first half-threaded column 7, an outer wall of the first half-threaded column 7 is rotationally connected with a fixed rod 8, an outer wall of the first half-threaded column 7 is threadedly connected with a fixing block 9, an outer wall of the fixing block 9 is fixedly connected with a sliding plate 10, an inner wall of the fixing block 9 is slidably connected with a limit bracket 11, an outer wall of the limit bracket 11 is fixedly connected to a periphery of an upper surface of the fixed rod 8, and a hoisting assembly is arranged on an outer wall of the sliding plate 10.

[0023] Specifically, when the height of the large precast component to be hoisted is relatively high, the motor 2 serving as the driving source is started. The motor 2 drives the first bevel gear shaft 3 to rotate. The bottom frame 1 provides support and limitation for the rotation of the first bevel gear shaft 3. On the one hand, it ensures that the position of the first bevel gear shaft 3 will not change when driven by the motor 2. On the other hand, it ensures that the first bevel gear shaft 3 will not fall off. Furthermore, it drives the second bevel gear shaft 4 meshing with the tooth end of the first bevel gear shaft 3 to rotate. The bottom frame 1 also plays a role in supporting and limiting the second bevel gear shaft 4, thereby driving the first bevel gear 5 to rotate. Since the position of the second bevel gear shaft 4 is restricted, the second bevel gear shaft 4 always meshes with the first bevel gear shaft 3, and it ensures that the position of the first bevel gear 5 will not change. Furthermore, it drives the second bevel gear 6 to rotate and synchronously drives the first half-threaded column 7 to rotate. The fixed rod 8 plays a role in restricting the position of the first half-threaded column 7, preventing the first half-threaded column 7 from tilting outwards, and ensuring that the first bevel gear 5 and the second bevel gear 6 always mesh, ensuring the operation of the overall device. Furthermore, it enables the fixed block 9 to rotate on the outer wall of the first half-threaded column 7. Since the fixed block 9 is restricted by the limit bracket 11, the fixed block 9 can only perform linear motion and will not rotate on its own. Furthermore, it makes the sliding plate 10 move upwards, thereby driving the multi-axis moving component 12 and the electric hoist 13 to move, making the height of the large precast component meet the installation height, achieving the effect that it is not necessary to remove and install the bottom frame 1 according to the different heights required by the large precast component, thereby improving the overall working efficiency.

[0024] Please refer to the appendix Figure 1 , the hoisting component includes a multi-axis moving component 12. The outer wall of the multi-axis moving component 12 is fixedly connected to the outer wall of the sliding plate 10. An electric hoist 13 is fixedly connected to the outer wall of the multi-axis moving component 12.

[0025] Specifically, the multi-axis moving component 12 can drive the electric hoist 13 to move on multiple axes, achieving the function of being conveniently adjusted according to different installation positions. The electric hoist 13 can fix and lift the large precast component.

[0026] Please refer to the appendix Figure 5 - appendix Figure 8 , the outer wall of the first bevel gear shaft 3 is rotatably connected to the inner wall of the bottom frame 1. The outer wall of the second bevel gear shaft 4 is rotatably connected to the inner wall of the bottom frame 1.

[0027] Specifically, the first bevel gear shaft 3 rotates on the inner wall of the bottom frame 1, enabling the bottom frame 1 to support and position the first bevel gear shaft 3, ensuring the smooth operation of the first bevel gear shaft 3. The second bevel gear shaft 4 rotates on the inner wall of the bottom frame 1, enabling the bottom frame 1 to also support and position the second bevel gear shaft 4, keeping the first bevel gear 5 meshed with the second bevel gear 6 and the first bevel gear shaft 3 meshed with the second bevel gear shaft 4 at all times, ensuring the smooth operation of the overall device.

[0028] Please refer to the appendix Figure 1 , the appendix Figure 2 and the appendix Figure 4 , the upper surface of the fixed rod 8 is in contact with the lower surface of the sliding plate 10, and the outer wall of the limit bracket 11 is in contact with the inner wall of the sliding plate 10.

[0029] Specifically, when the fixed rod 8 descends to the bottommost position, the upper surface of the fixed rod 8 is in contact with the lower surface of the sliding plate 10, preventing the sliding plate 10 from moving too much and causing the fixed block 9 to disengage from the threaded part of the first half-threaded column 7. At this time, the outer wall of the limit bracket 11 is also in contact with the inner wall of the sliding plate 10, preventing the sliding plate 10 from descending too much and damaging the first half-threaded column 7.

[0030] Please refer to the appendix Figure 3 - the appendix Figure 8 , the tooth end of the first bevel gear shaft 3 is meshed with a third bevel gear shaft 14, the tooth end of the third bevel gear shaft 14 is meshed with a third bevel gear 15, the outer wall of the third bevel gear 15 is fixedly connected to a second half-threaded column 17, the outer wall of the second half-threaded column 17 is rotatably connected to a stop block 16, the outer wall of the second half-threaded column 17 is rotatably connected to an auxiliary rod 18, the second half-threaded column 17 is threadedly connected to a covering rod 19, the outer wall of the covering rod 19 is fixedly connected to a connecting block 20, and the outer wall of the connecting block 20 is fixedly connected to the outer wall of the sliding plate 10.

[0031] Specifically, when the bevel gear shaft 1 3 is driven by the motor 2, the bevel gear shaft 3 14 will be synchronously driven to rotate, and the bevel gear shaft 3 14 will synchronously drive the bevel gear 3 15 to rotate through the meshing of the bevel gear shaft 3 14 and the bevel gear 3 15, thereby driving the semi-threaded column 2 17 to rotate, wherein the bottom frame 1 and the stopper 16 play the role of supporting and limiting the bevel gear shaft 3 14 and the semi-threaded column 2 17, ensuring that the bevel gear shaft 3 14 is always meshed with the bevel gear 3 15 to ensure the operation of the equipment, and preventing the semi-threaded column 2 17 from moving when subjected to force, thereby enabling the semi-threaded column 2 17 to drive the covering rod 19 to move, wherein the auxiliary rod 18 limits the position of the semi-threaded column 2 17, so that the semi-threaded column 2 The threaded column 17 will not tilt outward, ensuring the vertical movement of the covering rod 19, and the auxiliary rod 18 limits the covering rod 19, so that when the covering rod 19 is driven by the threaded part of the semi-threaded column 17, it can only make linear motion up and down, and will not rotate. The auxiliary rod 18 prevents the covering rod 19 from tilting outward, thereby driving the connecting block 20 to move, so that the connecting block 20 also moves gradually with the movement of the sliding plate 10, so that as the position of the sliding plate 10 changes, the positions of the connecting block 20 and the covering rod 19 also change accordingly, so that the two sides of the sliding plate 10 are always prevented from being affected by the gravity of the large prefabricated components and bending to the sides, thereby improving the service life of the equipment.

[0032] Please see attached Figure 1 -Attached Figure 5 The outer wall of the stopper 16 is fixedly connected to the outer wall of the bottom frame 1 , and the inner wall of the covering rod 19 is slidably connected to the outer wall of the auxiliary rod 18 .

[0033] Specifically, by the fixed connection between the stop block 16 and the bottom frame 1, the stop block 16 can disperse the force to the inside of the bottom frame 1 when subjected to force, thereby increasing the force strength on both sides. The inner wall of the covering rod 19 slides on the outer wall of the auxiliary rod 18, so that the position of the covering rod 19 is restricted and can only move in a straight line up and down without rotating. In addition, the lever and limit bracket 11 can prevent the covering rod 19 from descending or rising too high, causing the covering rod 19 to detach from the threaded portion of the semi-threaded column 17.

[0034] Please see attached Figure 3 -Attached Figure 8 The thread settings of the semi-threaded column 2 17 on both sides are opposite, and the threaded portion of the semi-threaded column 2 17 is equal to the threaded portion of the semi-threaded column 1 7.

[0035] Specifically, by setting the thread parts of the semi-threaded posts II 17 on both sides to be opposite, when the semi-threaded posts II 17 on both sides are driven to rotate, they can synchronously drive the covering rods 19 on both sides to rise, preventing the semi-threaded posts II 17 on both sides from moving in opposite directions and causing jamming. By setting the lengths of the threaded parts of the semi-threaded posts II 17 and the semi-threaded posts I 7 to be the same, the distance that the sliding plate 10 moves is equal to the distance that the covering rod 19 moves, preventing the covering rod 19 from disengaging from the threaded part of the sliding plate 10.

[0036] Please refer to the appendix Figure 6 and the appendix Figure 7 As shown, an enhancement plate 21 is fixedly connected to the outer wall of the bottom frame 1, and the outer wall of the enhancement plate 21 is fixedly connected to the outer wall of the sliding plate 10.

[0037] Specifically, by setting the enhancement plate 21 to be connected to the bottom frame 1 and the sliding plate 10 respectively, and the enhancement plate 21 being triangular, the bottom frame 1 and the enhancement plate 21 can effectively support the sliding plate 10, preventing the sliding plate 10 from being damaged due to force on both sides, and achieving the effect of extending the service life of the equipment.

[0038] Please refer to the appendix Figure 1 As shown, a control panel 22 is provided on the outer wall of the bottom frame 1. The control panel 22 is electrically connected to the motor 2. The control panel 22 includes a visual recognition system and a control system. The visual recognition system includes a high-definition camera and an image processing unit. The high-definition camera is located at the front end of the multi-axis moving component 12 and the camera pixel is not less than 4K. The control system uses a PLC controller, supports remote monitoring and fault diagnosis, and is used to receive signals from the visual recognition system.

[0039] Specifically, the electric hoist 13 starts to lower the steel wire rope until it touches the surface of the precast component to be hoisted. At this time, the visual recognition system is activated. The three-dimensional coordinate information of the precast component is collected through the 4K high-definition camera and the data is transmitted to the control system. The control system calculates the optimal hoisting path based on the received data and issues corresponding instructions to the multi-axis moving component 12 and the electric hoist 13 to adjust their actions to achieve grasping. After the hoisting is completed, the control system continues to command the equipment to translate to the position above the installation point according to the preset trajectory, and uses the visual recognition technology again to correct the position deviation, and finally places the precast component steadily in place, achieving the improvement of the hoisting and positioning accuracy of large precast components and reducing the quality accidents caused by position deviation.

[0040] Please refer to the appendix Figure 1 As shown, the bottom frame 1, the fixed block 9, the sliding plate 10, the covering rod 19, and the auxiliary rod 18 are all made of Q345B steel, and the electric hoist 13 is of a double-speed model.

[0041] Specifically, Q345B steel material is selected, which has good tensile strength and corrosion resistance, and extends the service life. The electric hoist 13 adopts a dual-speed model, which can not only rise and fall quickly when no-load, but also work stably under heavy load.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent hoisting and positioning device for large precast components, comprising a bottom frame (1), characterized in that, An outer wall of the bottom frame (1) is fixedly connected with a motor (2). An output end of the motor (2) is fixedly connected with a first bevel gear shaft (3). A toothed end of the first bevel gear shaft (3) is meshed with a second bevel gear shaft (4). A middle part of an outer wall of the second bevel gear shaft (4) is fixedly connected with a first bevel gear (5). An outer wall of the first bevel gear (5) is fixedly connected with a second bevel gear (6). An outer wall of the second bevel gear (6) is fixedly connected with a first half-threaded column (7). An outer wall of the first half-threaded column (7) is rotatably connected with a fixing rod (8). An outer wall of the first half-threaded column (7) is threadedly connected with a fixing block (9). An outer wall of the fixing block (9) is fixedly connected with a sliding plate (10). An inner wall of the fixing block (9) is slidably connected with a limiting support (11). An outer wall of the limiting support (11) is fixedly connected to a periphery of an upper surface of the fixing rod (8). A hoisting assembly is arranged on an outer wall of the sliding plate (10).

2. The intelligent hoisting and positioning device for large precast components according to claim 1, wherein The hoisting assembly includes a multi-axis moving assembly (12). An outer wall of the multi-axis moving assembly (12) is fixedly connected to an outer wall of the sliding plate (10). An electric hoist (13) is fixedly connected to an outer wall of the multi-axis moving assembly (12).

3. An intelligent hoisting and positioning device for large precast components according to claim 1, characterized in that, An outer wall of the first bevel gear shaft (3) is rotatably connected to an inner wall of the bottom frame (1). An outer wall of the second bevel gear shaft (4) is rotatably connected to an inner wall of the bottom frame (1).

4. A large precast component intelligent hoisting and positioning device according to claim 1, characterized in that, An upper surface of the fixing rod (8) is attached to a lower surface of the sliding plate (10). An outer wall of the limiting support (11) is attached to an inner wall of the sliding plate (10).

5. An intelligent hoisting and positioning device for large precast components according to claim 1, characterized in that, A toothed end of the first bevel gear shaft (3) is meshed with a third bevel gear shaft (14). A toothed end of the third bevel gear shaft (14) is meshed with a third bevel gear (15). An outer wall of the third bevel gear (15) is fixedly connected with a second half-threaded column (17). An outer wall of the second half-threaded column (17) is rotatably connected with a stop block (16). An outer wall of the second half-threaded column (17) is rotatably connected with an auxiliary rod (18). The second half-threaded column (17) is threadedly connected with a covering rod (19). An outer wall of the covering rod (19) is fixedly connected with a connecting block (20). An outer wall of the connecting block (20) is fixedly connected to an outer wall of the sliding plate (10).

6. The intelligent hoisting and positioning device for large precast components according to claim 5, characterized in that, An outer wall of the stop block (16) is fixedly connected to a periphery of an outer wall of the bottom frame (1). An inner wall of the covering rod (19) is slidably connected to an outer wall of the auxiliary rod (18).

7. An intelligent hoisting and positioning device for large precast components according to claim 5, characterized in that, Threads of the two second half-threaded columns (17) are arranged in opposite directions. A threaded part of the second half-threaded column (17) has the same length as a threaded part of the first half-threaded column (7).

8. The intelligent lifting and positioning equipment for large precast components according to claim 5, characterized in that An outer wall of the bottom frame (1) is fixedly connected with a reinforcing plate (21). An outer wall of the reinforcing plate (21) is fixedly connected to an outer wall of the sliding plate (10).

9. The intelligent hoisting and positioning equipment for large precast components according to claim 5, characterized in that, The outer wall of the bottom frame (1) is provided with a control panel (22), and the control panel (22) is electrically connected to the motor (2). The control panel (22) includes a visual recognition system and a control system. The visual recognition system contains a high-definition camera and an image processing unit. The high-definition camera is located at the front end of the multi-axis moving component (12) and the camera pixel is not less than 4K. The control system uses a PLC controller, supports remote monitoring and fault diagnosis, and is used to receive signals from the visual recognition system.

10. The intelligent hoisting and positioning device for large precast components according to claim 5, characterized in that, The bottom frame (1), the fixed block (9), the sliding plate (10), the covering rod (19), and the auxiliary rod (18) are all made of Q345B steel, and the electric hoist (13) is of a double-speed type.