Multi-directional positioning type hanging basket platform and method for negative moment tensioning of t-shaped edge beam

Abstract

The present application relates to the technical field of bridge engineering, and particularly relates to a multi-direction positioning type hanging basket platform and method for T-shaped side beam negative bending moment tensioning, the multi-direction positioning type hanging basket platform comprising a hanging basket body, a horizontal positioning system and a vertical positioning system, the horizontal positioning system comprising a moving mechanism, a friction block and a guide rod assembly, the moving mechanism being provided at the bottom end with a walking wheel with a brake, one end of the moving mechanism being connected with a cantilever, the cantilever being provided at the end with the guide rod assembly along the vertical direction, the guide rod assembly being provided at the bottom with a connecting plate, the connecting plate being provided at the bottom end with the friction block for cooperating with the top end of the T-shaped side beam flange plate, the vertical positioning system comprising a vertical force adding mechanism for extruding and fixing the connecting plate and the friction block on the top of the flange plate along the vertical direction, and the top of the hanging basket body being fixedly connected with one side of the connecting plate. When the present application is used, the multi-direction positioning of the hanging basket body can be realized, the stability of the hanging basket body is fully ensured, the construction safety is improved, and the construction efficiency can be greatly improved.

Description

Technical Field

[0001] This invention relates to the field of bridge engineering technology, specifically to a multi-directional positioning suspended platform and method for negative bending moment tensioning of T-shaped side beams. Background Technology

[0002] In bridge deck construction, precast T-beams are frequently used. These precast T-beams require negative moment tensioning to improve their stiffness, delay crack appearance, and increase durability.

[0003] In existing negative moment tensioning operations for T-shaped edge beams, the common technique involves installing a working platform on a truck crane and placing it under the T-shaped edge beam using the crane's boom. This method has two drawbacks:

[0004] 1. When switching work positions, a series of operations are required by the truck crane, which increases the time for changing work positions and affects the negative bending moment tensioning efficiency of the T-shaped side beam.

[0005] Second, the work platform is prone to swaying during the lifting and operation process, which poses a significant safety risk. Summary of the Invention

[0006] In response to the problems described in sections one and two of the background technology, this invention provides a multi-directional positioning suspended platform and method for negative bending moment tensioning of T-shaped side beams. This device can realize the vertical and horizontal positioning of the suspended platform, ensuring the stability of the suspended platform operation process; at the same time, it can quickly realize the switching of the negative bending moment tensioning position, improving construction efficiency.

[0007] To solve the above problems, the technical solution of the present invention is as follows:

[0008] A multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams includes a suspended platform body, a horizontal positioning system, and a vertical positioning system. The horizontal positioning system includes a moving mechanism, friction blocks, and a guide rod assembly. The moving mechanism has a traveling wheel with brakes at its bottom end, and a cantilever is connected to one end of the moving mechanism. The end of the cantilever is provided with a guide rod assembly along the vertical direction. A connecting plate is installed at the bottom of the guide rod assembly, and a friction block is provided at the bottom end of the connecting plate for engaging with the top of the flange plate of the T-shaped side beam. The vertical positioning system includes a vertical force-applying mechanism for vertically pressing and fixing the connecting plate and friction blocks to the top of the flange plate. The top of the suspended platform body is fixedly connected to one side of the connecting plate.

[0009] Preferably, the moving mechanism includes a cubic shell frame, with a traveling wheel at the bottom of the shell frame, and guide rail plates fixedly connected to the upper and lower parts of the shell frame respectively. The guide rail plates are respectively provided with a linear guide rail one and a linear guide rail two that pass through at least one end of the shell frame in the left and right directions. The linear guide rail one is connected to the cantilever, and the linear guide rail two is connected to a counterweight mechanism.

[0010] Preferably, the cantilever passes through the housing frame at least on its right end, the bottom end of the cantilever is slidably engaged with a linear guide rail, and a fixing plate is provided on the outer end of the cantilever. The guide rod assembly includes three guide tubes that pass through the fixing plate vertically and are fixedly connected to the fixing plate. The three guide tubes are arranged in a triangle, and a guide rod is slidably engaged in each guide tube. The bottom end of the guide rod is detachably fixedly connected to the top end of the connecting plate. A limiting block is provided at the top end of the guide rod to prevent the guide rod from slipping. A limiting block is provided at the end of the cantilever away from the fixing plate. The cantilever moves left and right along the linear guide rail via a driving mechanism.

[0011] Preferably, the drive mechanism includes a first rotating shaft arranged in the front-rear direction, with its two ends rotatably connected to the front and rear ends of the housing frame, respectively. One end of the first rotating shaft passes through the surface of the housing frame and is fixedly connected to the output shaft of a drive motor that is preset on the surface of the housing frame. The cantilever surface is provided with a rack structure in the left-right direction, and a first gear for meshing with the rack structure is fixedly connected to the first rotating shaft.

[0012] Preferably, the vertical force-applying mechanism includes an engaging push chain device. The push chain device is located at the center of a triangle formed by three guide tubes. The chain box and drive box of the push chain device are fixedly connected to the fixed plate. The push chain output by the push chain device slides vertically through the fixed plate and is fixedly connected to the top of the connecting plate.

[0013] Preferably, a vertical plate is fixedly connected to the end of the connecting plate away from the shell frame along the vertical direction. Several stiffening ribs are distributed on the back of the vertical plate. A reinforcing plate is fixedly connected to the bottom end of the vertical plate and is fixedly connected to one end of the top frame of the suspended basket body through the reinforcing plate.

[0014] Preferably, the width of the connecting plate is less than 1 / 3 of the width of the suspended basket body, and a wear-resistant rubber pad is provided on the inner surface of the vertical plate.

[0015] Preferably, a connecting arm is slidably connected to the second linear guide rail. One end of the connecting arm extends out of the left side of the housing frame and is fixedly connected to a counterweight box. A universal wheel is installed at the bottom of the connecting arm. The connecting arm moves left and right along the second linear guide rail under the drive of the second drive mechanism. The second drive mechanism has the same structure as the first drive mechanism, including a second drive motor, a second rotating shaft, a second rack structure, and a second gear.

[0016] Preferably, a pressure sensor is connected between the end of the push chain and the connecting plate, and a vision sensor is provided at the lower end of the cantilever to detect the position of the left edge of the basket body; it also includes a controller, which is connected to a power supply, a pressure sensor, and a vision sensor, and is configured to control the drive motors of drive mechanism one, drive mechanism two, and the push chain device.

[0017] The methods for using a multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped edge beams include Method 1 for moving the suspended platform body to the tensioning position and Method 2 for multi-directional positioning of the suspended platform body.

[0018] Preferably, the method one includes: the moving mechanism is locked in the center of the top of the T-shaped side beam; under the drive of the first drive mechanism, the cantilever extends to the right; under the drive of the second drive mechanism, the counterweight box moves to the left to a set position; when the left end of the basket body passes the edge of the flange plate of the T-shaped side beam, the push chain device is activated, and the push chain pushes the connecting plate down a set distance. At this time, the connecting plate is located on the upper side of the flange plate, and the reinforcing plate, i.e., the upper end of the basket body, is located on the lower side of the flange plate. Then, after the cantilever retracts a set distance, the push chain continues to push the connecting plate down, so that the friction block is pressed against the top of the flange plate. When the value of the pressure sensor reaches the set value, the pressing stops; at this time, the basket body is located in the tensioned position below the flange plate.

[0019] Preferably, the second method includes: after the moving mechanism is locked, under the compression of the vertical force application system, the friction block is tightly pressed against the upper end of the flange plate, and the horizontal movement of the connecting plate is prevented by friction, thereby preventing the horizontal displacement of the basket body. During this process, the locking force of the moving mechanism and the horizontal constraint force between the guide rod and the guide tube also assist in fixing the basket body in the horizontal direction; when the push chain presses the connecting plate against the upper end of the flange plate, the vertical positioning of the basket body is achieved due to the rigid connection between the connecting plate and the basket body.

[0020] The multi-directional positioning suspended platform and method for tensioning negative bending moments of T-shaped edge beams, as described in this invention, have the following beneficial effects:

[0021] 1. This invention provides a positioning structure and method for a suspended platform body used in the special structure of a T-shaped edge beam, which can maintain high stability of the suspended platform body during operation, thereby improving construction safety and construction quality.

[0022] 2. After the construction at one work station is completed, the present invention can be quickly moved to the next work station for tensioning operations. Compared with the complex operation of lifting equipment, the present invention can greatly improve construction efficiency. Attached Figure Description

[0023] It should be noted that the following figures are all schematic diagrams, and the dimensions in the figures are for reference and understanding only, and do not constitute a limitation on the technical structure of the present invention.

[0024] Figure 1 A front view structural diagram of the present invention during operation;

[0025] Figure 2 A schematic diagram of the suspended platform body of the present invention reaching the tensioning position;

[0026] Figure 3 A top view of the connecting plate of the present invention;

[0027] Figure 4 A bottom view of the reinforcing plate of this invention;

[0028] Figure 5 A schematic diagram of the connection between the bottom end of the reinforcing plate and the vertical plate of the present invention and the upper port of the suspended basket body;

[0029] Figure 6 A cross-sectional view of the counterweight box, connecting arm, and housing frame of the present invention.

[0030] Figure 7 A top view of the present invention;

[0031] Figure 8 A side sectional view of the present invention.

[0032] Figure label:

[0033] 1. T-shaped side beam; 2. Shell frame; 3. Cantilever; 4. Drive motor 1; 5. Connecting arm; 6. Counterweight box; 7. Lifting lug; 8. Traveling wheel; 9. Caster wheel; 10. Push chain device; 10. Push chain; 11. Guide rod; 12. Guide tube; 13. Stiffening rib; 14. Connecting plate; 15. Wear-resistant rubber pad; 16. Suspended basket body; 17. Drive motor 2; 18. Friction block; 19. Limiting block 2; 20. C-shaped opening matching the width of the upper port of the suspended basket body; 21. Reinforcing plate; 22. Vertical plate; 23. Upper port skeleton of the suspended basket body; 24. Rack structure 2; 25. Guide rail plate; 26. Linear guide rail 2; 27. Connecting rod; 28. Rack structure 1; 29. ​​Fixing plate; 30. Push chain device housing; 31. First rotating shaft; 32. First gear; 33. Linear guide rail 1 (illustrated only); 34. Partition plate; 35. Electrical component installation space; 36. Dragging connector. Detailed Implementation

[0034] The following description provides a detailed explanation of the embodiments of the present invention in a step-by-step manner. This description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0035] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limiting this invention.

[0036] In this embodiment, the present invention provides a multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams, such as... Figure 1-8 As shown, the system includes a suspended platform body 16, a horizontal positioning system, and a vertical positioning system. The horizontal positioning system includes a moving mechanism, a friction block 18, and a guide rod assembly. The moving mechanism has a traveling wheel 8 with a brake at its bottom end, and a cantilever 3 is connected to one end of the moving mechanism. The end of the cantilever 3 is provided with a guide rod assembly along the vertical direction. A connecting plate 14 is installed at the bottom of the guide rod assembly. The bottom end of the connecting plate 14 is provided with a friction block 18 for cooperating with the top of the flange plate of the T-shaped side beam 1. The vertical positioning system includes a vertical force-applying mechanism for pressing and fixing the connecting plate 14 and the friction block 18 vertically to the top of the flange plate. The top of the suspended platform body 16 is fixedly connected to one side of the connecting plate 14.

[0037] In a further embodiment, such as Figure 1-8 As shown, the moving mechanism includes a cubic shell frame 2, with a traveling wheel 8 at the bottom of the shell frame 2. The upper and lower parts of the shell frame 2 are respectively fixedly connected to guide rail plates 25. The guide rail plates 25 are respectively provided with linear guide rail 1 33 and linear guide rail 26 that pass through at least one end of the shell frame 2 in the left and right directions. The linear guide rail 1 33 is connected to the cantilever 3, and the linear guide rail 2 is connected to a counterweight mechanism.

[0038] Specifically, the cantilever 3 passes through the housing frame 2 at least on its right end. The bottom end of the cantilever 3 is slidably engaged with the linear guide rail 33. A fixing plate 29 is provided on the outer end of the cantilever 3. The guide rod assembly includes three guide tubes 12 that pass vertically through the fixing plate 29 and are fixedly connected to the fixing plate 29. The three guide tubes 12 are arranged in a triangle. A guide rod 11 is slidably engaged in each guide tube 12. The bottom end of the guide rod 11 is detachably fixedly connected to the top end of the connecting plate 14. A limiting block 1 (not marked in the figure) is provided at the top end of the guide rod 11 to prevent the guide rod 11 from slipping. A limiting block 2 19 is provided at the end of the cantilever 3 away from the fixing plate 29. Figure 1The second limiting block 19 is an example of a cantilever penetrating both ends of the shell frame 2. In practical applications, the second limiting block can also be set inside the shell frame 2, and a stop block can be set inside the shell frame 2 to block the second limiting block and limit the maximum outward extension length of the cantilever 3. The cantilever 3 moves left and right along the linear guide rail 33 via the drive mechanism. In specific use, the length of the cantilever can be determined according to the size of the top of the T-shaped side beam, ensuring that the basket moves into place.

[0039] Furthermore, the drive mechanism includes a first rotating shaft 31 arranged in the front-to-back direction. The two ends of the first rotating shaft 31 are rotatably connected to the front and rear ends of the housing frame 2, respectively. One end of the first rotating shaft 31 passes through the surface of the housing frame 2 and is fixedly connected to the output shaft of the drive motor 4 pre-installed on the surface of the housing frame 2. The cantilever 3 surface is provided with a rack structure 28 in the left-to-right direction. A first gear 32 for meshing with the rack structure 28 is fixedly connected to the first rotating shaft 31. The housing frame and the linear guide rail constitute a limiting structure that constrains the horizontal position of the cantilever. It needs to have sufficient strength to prevent deformation during use. The drive motor 1 and the drive motor 2 (described below) are preferably servo motors, which facilitates the controller in accurately controlling the distance and position of the cantilever or counterweight box as it moves outward.

[0040] In a further embodiment, such as Figure 1-8 As shown, the vertical force-adding mechanism includes a meshing push chain device 10. The push chain device 10 is located at the center of a triangle formed by three guide tubes 12. The chain box and drive box of the push chain device 10 are fixedly connected to the fixed plate 29. The push chain 101 output by the push chain device 10 slides vertically through the fixed plate 29 and is fixedly connected to the top of the connecting plate 14. In this embodiment, the push chain device is preferably a meshing push chain with two chain boxes. Each of the two chain boxes contains either chain one or chain two coiled along guide rails. The two chain boxes are connected to a drive box. Within the drive box, a driving gear and a driven gear mesh chain one and chain two to form the push chain 101, which is then output outwards. The push chain is a rigid chain, a steel column structure composed of chains. The push chain moves the connecting plate and the suspended platform body downwards, thereby pressing and fixing the connecting plate to the top of the flange plate. Simultaneously, the suspended platform body reaches the construction position. For information on meshing push chains, please refer to existing technical descriptions. Content not covered in this invention is addressed using existing technical solutions.

[0041] In a further embodiment, such as Figure 1-8 As shown, a vertical plate 22 is fixedly connected to the end of the connecting plate 14 away from the shell frame 2 along the vertical direction. Several stiffening ribs 13 are distributed on the back of the vertical plate 22. A reinforcing plate 21 is fixedly connected to the bottom end of the vertical plate 22 and is fixedly connected to one end of the top frame of the suspended basket body 16 through the reinforcing plate 21. Figure 5As shown, the vertical plate 22 and the reinforcing plate 21 form a C-shaped structure from a top view angle. This structure can be welded or screwed to the outer side of the upper port of the suspended platform, achieving fixation of the suspended platform body without hindering worker operations. Simultaneously, the guide column and sleeve mutually constrain each other, bearing the lateral force of the suspended platform body in the horizontal direction, while the push chain is only responsible for vertical pushing, ensuring structural safety and stability.

[0042] Specifically, as a preferred option, such as Figure 2 As shown, the width of the connecting plate 14 is less than 1 / 3 of the width of the basket body, and a wear-resistant rubber pad 15 is provided on the inner surface of the vertical plate 22.

[0043] In a further embodiment, such as Figure 1-8 As shown, a connecting arm 5 is slidably connected to the linear guide rail 26. One end of the connecting arm 5 extends out of the left side of the housing frame 2 and is fixedly connected to a counterweight box 6 (which can be loaded with counterweights as needed). A caster wheel 9 is installed at the bottom of the connecting arm 5. The connecting arm 5 moves left and right along the linear guide rail 26 under the drive of the second drive mechanism. The second drive mechanism has the same structure as the first drive mechanism, including a second drive motor, a second rotating shaft, a second rack structure 24, and a second gear. When the second drive motor rotates, it drives the second gear to rotate, which in turn drives the second rack structure to move, thereby moving the counterweight box left and right.

[0044] In a further embodiment, such as Figure 1-8 As shown, a pressure sensor (not shown in the figure, used to detect pressure signals) is connected between the end of the push chain 101 and the connecting plate 14. A vision sensor (not shown in the figure) is provided at the lower end of the cantilever 3 to detect the position of the left edge of the basket body 16. The system also includes a controller, which is connected to the power supply, the pressure sensor, and the vision sensor, and is configured to control the drive motors (not shown in the figure) of the drive mechanism one, the drive mechanism two, and the push chain device.

[0045] In this embodiment, workers can automatically operate the suspended platform body to enter the work station and fix the suspended platform body in multiple directions by operating the control panel of the controller.

[0046] Based on the above embodiments, this embodiment discloses a method for using a multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped edge beams, such as... Figure 1-8 As shown, there are two methods: Method 1, which involves moving the suspended platform body to the tensioning position, and Method 2, which involves multi-directional positioning of the suspended platform body.

[0047] Specifically, the method one includes: the moving mechanism is locked in the center of the top of the T-shaped side beam 1; under the drive of the first drive mechanism, the cantilever 3 extends to the right; under the drive of the second drive mechanism, the counterweight box 6 moves to the left to a set position; when the left end of the suspended basket body 16 passes the edge of the flange plate of the T-shaped side beam 1, the push chain device is activated, pushing the connecting plate 14 downward a set distance via the push chain 101. At this time, the connecting plate is located on the upper side of the flange plate, and the reinforcing plate, i.e., the upper end of the suspended basket body, is located on the lower side of the flange plate. Then, after the cantilever 3 retracts a set distance, as... Figure 2 As shown, the push chain 101 continues to push the connecting plate 14 downwards, pressing the friction block 18 against the top of the flange plate. When the pressure sensor value reaches the set value, the pressing stops; at this time, the suspended platform body 16 is located in the tensioning position below the flange plate. Workers can perform tensioning operations on the suspended platform body. In addition to transporting workers, the suspended platform body can also transport tools used for tensioning.

[0048] Furthermore, the second method includes: after the moving mechanism is locked, under the compression of the vertical force application system, the friction block 18 is tightly pressed against the upper end of the flange plate, relying on friction to prevent the connecting plate 14 from moving horizontally, thereby preventing the basket body from shifting horizontally and achieving horizontal positioning; during this process, the locking force of the moving mechanism and the horizontal constraint force between the guide rod 11 and the guide tube 12 also assist in fixing the basket body horizontally; when the push chain 101 presses the connecting plate 14 tightly against the upper end of the flange plate, due to the rigid connection between the connecting plate 14 and the basket body 16, the basket body 16 is positioned vertically. At this time, the counterweight effect of the counterweight block is no longer important, and the basket body mainly relies on the flange plate to bear the weight.

[0049] It should be noted that after the construction of one work station is completed, the suspended platform body can be retracted to the top of the flange plate by following the reverse steps above, so that the counterweight box and the suspended platform body are retracted to both sides of the moving mechanism. Under manual or mechanical dragging, the moving mechanism can quickly move to the next negative bending moment tensioning work station and quickly complete the tensioning operation.

Claims

1. A multi-directional positioning suspended platform for tensioning negative bending moments of T-shaped edge beams, characterized in that: The system includes a suspended platform body, a horizontal positioning system, and a vertical positioning system. The horizontal positioning system includes a moving mechanism, a friction block, and a guide rod assembly. The moving mechanism has a traveling wheel with brakes at its bottom end, and a cantilever is connected to one end of the moving mechanism. The end of the cantilever is provided with a guide rod assembly along the vertical direction. A connecting plate is installed at the bottom of the guide rod assembly, and a friction block is provided at the bottom end of the connecting plate for engaging with the top of the flange plate of the T-shaped side beam. The vertical positioning system includes a vertical force-applying mechanism for pressing and fixing the connecting plate and the friction block along the vertical direction to the top of the flange plate. The top of the suspended platform body is fixedly connected to one side of the connecting plate.

2. The multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams as described in claim 1, characterized in that, The moving mechanism includes a cubic shell frame with wheels at the bottom. Guide rail plates are fixedly connected to the upper and lower parts of the shell frame. Linear guide rail one and linear guide rail two are respectively provided on the guide rail plates along the left and right directions, penetrating at least one end of the shell frame. Linear guide rail one is connected to the cantilever, and linear guide rail two is connected to a counterweight mechanism.

3. The multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams as described in claim 2, characterized in that, The cantilever extends through the housing frame at least on its right end. The bottom end of the cantilever is slidably engaged with a linear guide rail. A fixing plate is provided on the outer end of the cantilever. The guide rod assembly includes three guide tubes that pass vertically through the fixing plate and are fixedly connected to the fixing plate. The three guide tubes are arranged in a triangle. A guide rod is slidably engaged in each guide tube. The bottom end of the guide rod is detachably fixedly connected to the top end of the connecting plate. A limiting block is provided at the top end of the guide rod to prevent the guide rod from slipping. A limiting block is provided at the end of the cantilever away from the fixing plate. The cantilever moves left and right along the linear guide rail via a driving mechanism.

4. The multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams as described in claim 3, characterized in that, The drive mechanism includes a first rotating shaft arranged in the front-to-back direction. The two ends of the first rotating shaft are rotatably connected to the front and rear ends of the housing frame, respectively. One end of the first rotating shaft passes through the surface of the housing frame and is fixedly connected to the output shaft of the drive motor that is preset on the surface of the housing frame. The cantilever surface is provided with a rack structure in the left-to-right direction. A first gear for meshing with the rack structure is fixedly connected to the first rotating shaft.

5. The multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams as described in claim 4, characterized in that, The vertical force-applying mechanism includes an engaging push chain device. The push chain device is located at the center of a triangle formed by three guide tubes. The chain box and drive box of the push chain device are fixedly connected to the fixed plate. The push chain output by the push chain device slides vertically through the fixed plate and is fixedly connected to the top of the connecting plate.

6. The multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams as described in claim 5, characterized in that, The connecting plate is fixedly connected to a vertical plate at one end away from the shell frame. Several stiffening ribs are distributed on the back of the vertical plate. A reinforcing plate is fixedly connected to the bottom end of the vertical plate and is fixedly connected to one end of the top frame of the suspended basket body through the reinforcing plate.

7. The multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams as described in claim 6, characterized in that, The width of the connecting plate is less than 1 / 3 of the width of the suspended basket body, and a wear-resistant rubber pad is provided on the inner surface of the vertical plate.

8. The multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams as described in claim 7, characterized in that, A connecting arm is slidably connected to the second linear guide rail. One end of the connecting arm extends out of the left side of the housing frame and is fixedly connected to a counterweight box. A universal wheel is installed at the bottom of the connecting arm. The connecting arm moves left and right along the second linear guide rail under the drive of the second drive mechanism. The second drive mechanism has the same structure as the first drive mechanism, including a second drive motor, a second rotating shaft, a second rack structure, and a second gear.

9. The multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams as described in claim 8, characterized in that, A pressure sensor is connected between the end of the push chain and the connecting plate, and a vision sensor is provided at the lower end of the cantilever to detect the position of the left edge of the basket body; it also includes a controller, which is connected to the power supply, the pressure sensor, and the vision sensor, and is configured to control the drive motors of drive mechanism one, drive mechanism two, and the push chain device.

10. The method of using the multi-directional positioning suspended platform for negative bending moment tensioning of T-shaped side beams as described in claim 9, characterized in that, This includes two methods: Method 1, which involves moving the suspended platform to the tensioning position; and Method 2, which involves multi-directional positioning of the suspended platform. The method one includes: the moving mechanism is locked in the center of the top of the T-shaped side beam; under the drive of the first drive mechanism, the cantilever extends to the right; under the drive of the second drive mechanism, the counterweight box moves to the left to the set position; when the left end of the basket body passes the edge of the flange plate of the T-shaped side beam, the push chain device is activated, and the push chain pushes the connecting plate down a set distance. At this time, the connecting plate is located on the upper side of the flange plate, and the reinforcing plate, i.e., the upper end of the basket body, is located on the lower side of the flange plate. Then, after the cantilever retracts a set distance, the push chain continues to push the connecting plate down, so that the friction block is pressed against the top of the flange plate. When the value of the pressure sensor reaches the set value, the pressing stops; at this time, the basket body is located in the tensioned position below the flange plate. The second method includes: after the moving mechanism is locked, under the pressure of the vertical force application system, the friction block is tightly pressed against the upper end of the flange plate, and the horizontal movement of the connecting plate is prevented by friction, thereby preventing the horizontal displacement of the basket body. During this process, the locking force of the moving mechanism and the horizontal constraint force between the guide rod and the guide tube also help to fix the basket body in the horizontal direction; when the push chain presses the connecting plate against the upper end of the flange plate, the vertical positioning of the basket body is achieved due to the rigid connection between the connecting plate and the basket body.

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