Construction device and construction method of spatial large-span special-shaped variable cross-section ribbon steel structure

Abstract

The construction device comprises a first supporting mechanism, a second supporting mechanism and a plurality of lifting adjusting mechanisms, the lifting adjusting mechanisms are installed between the first supporting mechanism and the second supporting mechanism, the first supporting mechanism comprises a bottom shell, and the bottom shell is connected with the bottom shell. The second supporting mechanism comprises a top shell, a plurality of guide rails are arranged on the top side of the bottom shell and the bottom side of the top shell at equal angles, a first sliding seat is slidably mounted on the guide rails of the bottom shell, a second sliding seat is slidably mounted on the guide rails of the top shell, and the first sliding seat and the second sliding seat are fixedly mounted in the middle of the bottom shell and the middle of the top shell correspondingly. A plurality of inner cavities are formed in the top shell, springs are installed in the inner cavities, and pistons are installed at the tops of the springs; through the sliding seat linkage design of the first supporting mechanism and the second supporting mechanism, the distribution distance of the lifting adjusting mechanism can be dynamically adjusted, and supporting point positions of different sections of the ribbon steel structure can be flexibly matched.

Description

Technical Field

[0001] The present invention relates to the technical field of ribbon steel structure installation, and in particular to a construction device and a construction method for a spatial large-span special-shaped variable-cross-section ribbon steel structure. Background Art

[0002] Large-span, special-shaped, variable-section ribbon steel structures are widely used in roofs, canopies, or decorative structures due to their unique shape and streamlined aesthetic. However, these structures have the characteristics of large spans, complex cross-sectional variations, and diverse spatial postures, which pose great challenges to construction and installation.

[0003] When installing large-span, irregular-shaped, variable-section ribbon steel structures, it is difficult to support them. Traditional support frames (such as full-floor scaffolding or temporary steel supports) are difficult to adapt to changes in irregular curved surfaces and need to be customized, which is costly and inefficient. The variable cross-section leads to uneven force on the support points, which can easily cause local instability or deformation. The positioning accuracy is insufficient, and the spatial posture of the ribbon steel structure needs to be precisely controlled, but the existing adjustment devices mostly rely on manual adjustment, which is inefficient and has large errors. When hoisting in sections, the height and angle of each support point need to be dynamically matched, and traditional methods are difficult to achieve coordinated adjustment. The self-adaptive ability is poor, and the steel structure may undergo slight deformation due to its own weight or external force during the hoisting process, while traditional rigid supports cannot adapt to surface changes in real time, which can easily lead to installation misalignment. The construction efficiency is low, and hydraulic jacks or spiral jacking devices are mostly used for point-by-point adjustment. The operation is cumbersome, and it is difficult to achieve synchronous lifting, which affects the construction progress. Summary of the Invention

[0004] The problem solved by the present invention is to provide a construction device and a construction method for a large-span, special-shaped, variable-section ribbon steel structure, which solves the problem that when installing a large-span, special-shaped, variable-section ribbon steel structure, the support is difficult, the traditional support frame (such as a full-floor scaffolding or a temporary steel support) is difficult to adapt to the changes in the special-shaped curved surface, and needs to be customized, which is costly and inefficient. The variable cross-section leads to uneven force on the support points, which can easily cause local instability or deformation; the positioning accuracy is insufficient, and the spatial posture of the ribbon steel structure needs to be precisely controlled, but the existing adjustment devices mostly rely on manual adjustment, which is inefficient and has large errors. When hoisting in sections, the height and angle of each support point need to be dynamically matched, and traditional methods are difficult to achieve coordinated adjustment; the self-adaptation ability is poor, and the steel structure may undergo slight deformation due to its own weight or external force during the hoisting process, and the traditional rigid support cannot adapt to the changes in the curved surface in real time, which can easily lead to installation dislocation; the construction efficiency is low, and hydraulic jacks or spiral jacking devices are mostly used for point-by-point adjustment, which is cumbersome to operate and difficult to achieve synchronous lifting, affecting the construction progress.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A construction device for a large-span, special-shaped, variable-section streamer steel structure, comprising a first supporting mechanism, a second supporting mechanism, and a lifting and adjusting mechanism, wherein a plurality of lifting and adjusting mechanisms are installed between the first supporting mechanism and the second supporting mechanism, the first supporting mechanism comprising a bottom shell, the second supporting mechanism comprising a top shell, a plurality of guide rails being provided at equal angles on the top side of the bottom shell and the bottom side of the top shell, a first slide being slidably mounted on the guide rails of the bottom shell, a second slide being slidably mounted on the guide rails of the top shell, the first slide and the second slide being fixedly mounted on the middle portions of the bottom shell and the top shell, respectively, a plurality of inner cavities being opened in the top shell, a spring being installed in the inner cavity, a piston being installed on the top of the spring, and a movable column being installed on the piston;

[0007] The second supporting mechanism includes a fixed cylinder fixedly connected to the first slide, a first-level cylinder is telescopically installed in the cylinder, a second-level cylinder is telescopically installed in the first-level cylinder, a third-level cylinder is telescopically installed in the second-level cylinder, a ball head is installed on the top of the third-level cylinder, and the ball head is rotatably connected to the ball seat on the bottom side of the second slide.

[0008] Preferably, the first motor and the second motor are installed in the first slide and the second slide located in the middle of the bottom shell and the top shell respectively, and the output ends of the first motor and the second motor are respectively located in the bottom shell and the top shell. A turntable is installed, and several arc grooves are opened at equal angles on the turntable.

[0009] Preferably, a plurality of slide grooves parallel to the guide rails are opened at equal angles on the bottom shell and the top shell, and guide rods penetrating the slide grooves and the arc grooves are installed on the bottom side of the first slide seat and the top side of the second slide seat.

[0010] Preferably, a plurality of mounting grooves are provided on the outer side of the top shell, a first hydraulic cylinder is installed in the mounting groove, and a sealing plate is installed in the movable groove of the top shell at the telescopic end of the first hydraulic cylinder;

[0011] An air hole is opened on the bottom side of the inner cavity, and a plurality of sealing seats adapted to the air hole are arranged on the sealing plate.

[0012] Preferably, a plurality of first threaded holes are opened on the outer side of the top of the first-stage tube, a plurality of second threaded holes and third threaded holes are opened at both ends of the second-stage tube, a plurality of fourth threaded holes are opened at the top of the third-stage tube, and a first bottom hole and a second bottom hole are opened at the bottom ends of the first-stage tube and the second-stage tube, respectively.

[0013] Preferably, a third motor is installed at the bottom end of the first and second cylinders, and a rotating plate is installed at the output end of the third motor inside the first and second cylinders, and the diameter of the rotating plate is larger than the diameter of the first bottom hole and the second bottom hole.

[0014] Preferably, a second hydraulic cylinder is installed in the three-stage cylinder, and a rod seat is installed at the telescopic end of the second hydraulic cylinder, and the diameter of the rod seat is smaller than the diameters of the first bottom hole and the second bottom hole.

[0015] Preferably, a limiting assembly is installed on the outer side of the top of the fixed cylinder, the first-level cylinder and the second-level cylinder. The limiting assembly includes a ring cover, and a number of screws are installed through the inner wall of the ring cover with evenly spaced threads. The inner end of the screw is installed with a rotating tooth, and the rotating tooth is provided with polygonal holes.

[0016] Preferably, a ring gear meshing with the rotating gear is installed on the bottom side of the ring cover, a fourth motor is installed on the outside of the ring cover, a polygonal shaft is installed on the output end of the fourth motor, and the polygonal shaft is located in the polygonal hole.

[0017] A construction method for a construction device of a large-span, special-shaped, variable-section ribbon steel structure, the specific operation steps of the construction method are as follows:

[0018] Step 1: Move the device to the support point when the ribbon steel structure is installed. The lifting and adjusting mechanism is in the retracted state. The segmented ribbon steel structure is hoisted to the second supporting mechanism by the crane. At this time, the ribbon steel structure is in contact with the movable column. Under the action of the spring, the movable columns at different points are in contact with the surface of the special-shaped ribbon steel structure. Then the first hydraulic cylinder drives the sealing plate to move upward in the movable groove until the sealing seat of the sealing plate blocks the air hole, thereby sealing the inner cavity, thereby limiting the position of the piston and the movable column in each inner cavity;

[0019] Step 2: According to the placement of the ribbon steel structure, the turntable is driven to rotate by the first motor and the second motor, and then the arc groove acts on the guide rod to drive the first slide and the second slide to move synchronously along the guide rail, thereby adjusting the distance between the lifting and adjusting mechanisms;

[0020] Step three: the fourth motor on the limit assembly of the lifting and adjusting mechanism drives the polygonal shaft to rotate, and then drives one of the rotating teeth to rotate, driving the meshing ring teeth to rotate synchronously, and then the ring teeth drive the meshing multiple rotating teeth to rotate, the rotating screw moves on the ring cover, and the polygonal shaft moves in the polygonal hole. The third motor drives the rotating plate to rotate to realize the opening and closing of the first bottom hole and the second bottom hole. First, the secondary cylinder is lifted and lowered. At this time, the screw on the limit assembly of the first cylinder is screwed into the third threaded hole, and the screw on the limit assembly of the secondary cylinder is screwed into the fourth threaded hole. The telescopic end of the second hydraulic cylinder passes through the first bottom hole and the second bottom hole and contacts the first slide seat. As the second hydraulic cylinder extends, the first cylinder, the second cylinder and the third cylinder move up in the fixed cylinder until the screw on the limit assembly of the fixed cylinder corresponds to the first threaded hole, and the screw is screwed into the first threaded hole to realize the fixed connection between the fixed cylinder and the first cylinder. Then the screw on the limit assembly of the first cylinder is rotated When the second hydraulic cylinder is retracted and the rod seat is located in the second cylinder, the rotating plate in the first cylinder rotates to the first bottom hole, the second hydraulic cylinder is extended, and the rod seat acts on the rotating plate in the first cylinder, thereby driving the second cylinder and the third cylinder to move up in the first cylinder until the screw on the limit assembly of the first cylinder corresponds to the second threaded hole, and the screw is screwed into the second threaded hole, and the screw on the limit assembly of the second cylinder is screwed out of the fourth threaded hole, and the second hydraulic cylinder is retracted until the rod seat is located in the second cylinder. At this time, the rotating plate in the second cylinder rotates to the second bottom hole, the second hydraulic cylinder is extended, and the rod seat acts on the rotating plate in the second cylinder, thereby driving the third cylinder to move up in the second cylinder. The fixed cylinder, the first cylinder, the second cylinder and the third cylinder cooperate with each other to adjust the overall height of the lifting adjustment mechanism, and the streamer steel structure is raised to the installation position. Different lifting adjustment mechanisms have different adjustment heights, which adjust the inclination angles of the second support mechanism and the streamer steel structure.

[0021] The beneficial effects of the present invention are as follows: a multi-stage telescopic cylinder is used in conjunction with a hydraulic drive and limit assembly to achieve high-precision, multi-stage height adjustment, adapting to the construction requirements of large-span special-shaped steel structures with complex spatial postures; through the sliding seat linkage design of the first and second support mechanisms, the distribution spacing of the lifting and adjusting mechanisms can be dynamically adjusted to flexibly match the support points of different cross-sections of the ribbon steel structure;

[0022] Adaptive support and stability: a spring, piston, and active column structure are set inside the top shell, which automatically conforms to the special-shaped curved surface during hoisting. The hydraulic cylinder locks the air hole to fix the contact point, ensuring uniform load distribution and avoiding local stress concentration. The connection between the ball head and the ball seat allows the angle of each lifting adjustment mechanism to be fine-tuned. Combined with different height adjustments, the spatial posture of the ribbon steel structure is accurately controlled to reduce installation errors.

[0023] The limit assembly adopts a ring gear and rotating gear linkage structure. A single motor drives multiple screws to move synchronously, quickly locking the threaded holes of each level of the cylinder, improving the efficiency and reliability of telescopic fixation. The rotating plate and hydraulic cylinder work together to achieve step-by-step lifting. At the same time, different cylinders can be combined according to specific height requirements, simplifying the multi-stage telescopic control logic and reducing operational complexity.

[0024] Integrated hoisting, adaptive fitting, and multi-point synchronous adjustment functions enable one-time positioning of special-shaped steel structures, reducing repeated adjustments and shortening construction periods. Segmented height adjustment and tilt control meet the complex installation requirements of large-span and variable-section streamers, making them particularly suitable for the construction of curved or cantilevered structures.

[0025] The mechanical linkage design reduces manual intervention and the risk of working at height. The modular structure facilitates transportation and assembly and is suitable for large construction sites. Precise load distribution and posture control can reduce the risk of steel structure deformation, improve construction quality, and reduce subsequent correction costs.

[0026] Through innovative multi-level adjustment, adaptive support and coordinated drive mechanism, the device effectively solves the problems of difficult positioning and poor stability in the construction of special-shaped ribbon steel structures, and is highly efficient, safe and economical. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the first overall structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the second overall structure of the present invention;

[0029] Figure 3 It is a cross-sectional view of the present invention;

[0030] Figure 4 This is a cross-sectional view of the lifting and adjusting mechanism of the present invention;

[0031] Figure 5 This is a schematic structural diagram of the lifting and adjusting mechanism of the present invention;

[0032] Figure 6 This is a schematic diagram of the ring gear and rotating gear installation structure of the present invention.

[0033] Legend:

[0034] 1. First support mechanism; 2. Second support mechanism; 3. Lifting adjustment mechanism; 4. Bottom shell; 5. Top shell; 6. Slideway; 7. Guide rail; 8. First slide; 9. Second slide; 10. First motor; 11. Second motor; 12. Turntable; 13. Arc groove; 14. Guide rod; 15. Ball seat; 16. Inner cavity; 17. Spring; 18. Piston; 19. Movable column; 20. Mounting slot; 21. First hydraulic cylinder; 22. Sealing plate; 23. Sealing seat; 24. Air hole; 25 , movable groove; 26, fixed cylinder; 27, first-level cylinder; 28, second-level cylinder; 29, third-level cylinder; 30, ball head; 31, second hydraulic cylinder; 32, rod seat; 33, first threaded hole; 34, second threaded hole; 35, third threaded hole; 36, fourth threaded hole; 37, first bottom hole; 38, second bottom hole; 39, third motor; 40, rotating plate; 41, ring cover; 42, fourth motor; 43, polygonal shaft; 44, ring gear; 45, screw; 46, rotating gear; 47, polygonal hole. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] Specific examples are given below.

[0037] See also Figures 1 to 6 , a construction device for a large-span, special-shaped, variable-section streamer steel structure, comprising a first supporting mechanism 1, a second supporting mechanism 2 and a lifting and adjusting mechanism 3, a plurality of lifting and adjusting mechanisms 3 are installed between the first supporting mechanism 1 and the second supporting mechanism 2, the first supporting mechanism 1 comprises a bottom shell 4, the second supporting mechanism 2 comprises a top shell 5, a plurality of guide rails 7 are provided at equal angles on the top side of the bottom shell 4 and the bottom side of the top shell 5, a first slide 8 is slidably mounted on the guide rail 7 of the bottom shell 4, a second slide 9 is slidably mounted on the guide rail 7 of the top shell 5, the first slide 8 and the second slide 9 are also fixedly mounted on the middle parts of the bottom shell 4 and the top shell 5 respectively, a plurality of inner cavities 16 are opened in the top shell 5, a spring 17 is installed in the inner cavity 16, a piston 18 is installed on the top of the spring 17, and a movable column 19 is installed on the piston 18;

[0038] A first motor 10 and a second motor 11 are installed in the first slide 8 and the second slide 9 located in the middle of the bottom shell 4 and the top shell 5, respectively. The output ends of the first motor 10 and the second motor 11 are respectively located in the bottom shell 4 and the top shell 5, and a turntable 12 is installed. A plurality of arc grooves 13 are opened at equal angles on the turntable 12. A plurality of slide grooves 6 parallel to the guide rail 7 are opened at equal angles on the bottom shell 4 and the top shell 5. A guide rod 14 passing through the slide groove 6 and the arc groove 13 is installed on the bottom side of the first slide 8 and the top side of the second slide 9. The turntable 12 is driven to rotate by the operation of the first motor 10 and the second motor 11, and then the arc groove 13 acts on the guide rod 14, driving the first slide 8 and the second slide 9 to move synchronously along the guide rail 7, thereby adjusting the spacing between the lifting adjustment mechanism 3;

[0039] Several mounting grooves 20 are provided on the outside of the top shell 5, and a first hydraulic cylinder 21 is installed in the mounting groove 20. The telescopic end of the first hydraulic cylinder 21 is located in the movable groove 25 of the top shell 5 and a sealing plate 22 is installed. An air hole 24 is provided on the bottom side of the inner cavity 16, and several sealing seats 23 adapted to the air hole 24 are provided on the sealing plate 22. The first hydraulic cylinder 21 drives the sealing plate 22 to move in the movable groove 25. When the sealing seat 23 of the sealing plate 22 blocks the air hole 24, the inner cavity 16 is sealed. When the sealing seat 23 of the sealing plate 22 is separated from the air hole 24, the inner cavity 16 is connected to the outside world.

[0040] The second supporting mechanism 2 includes a fixed cylinder 26 fixedly connected to the first slide 8, a first-stage cylinder 27 is telescopically installed in the cylinder 26, a second-stage cylinder 28 is telescopically installed in the first-stage cylinder 27, a third-stage cylinder 29 is telescopically installed in the second-stage cylinder 28, a ball head 30 is installed on the top of the third-stage cylinder 29, and the ball head 30 is rotatably connected to the ball seat 15 on the bottom side of the second slide 9, a plurality of first threaded holes 33 are opened on the outer side of the top of the first-stage cylinder 27, a plurality of second threaded holes 34 and third threaded holes 35 are opened at both ends of the second-stage cylinder 28, a plurality of fourth threaded holes 36 are opened on the top of the third-stage cylinder 29, a first bottom hole 37 and a second bottom hole 38 are opened at the bottom ends of the first-stage cylinder 27 and the second-stage cylinder 28, a third motor 39 is installed at the bottom ends of the first-stage cylinder 27 and the second-stage cylinder 28, and the output end of the third motor 39 is located between the first-stage cylinder 27 and the second-stage cylinder 2 8 is installed with a rotating plate 40, and the diameter of the rotating plate 40 is larger than the diameters of the first bottom hole 37 and the second bottom hole 38. The second hydraulic cylinder 31 is installed in the three-stage cylinder 29, and the rod seat 32 is installed at the telescopic end of the second hydraulic cylinder 31, and the diameter of the rod seat 32 is smaller than the diameters of the first bottom hole 37 and the second bottom hole 38. The fixed cylinder 26, the first-stage cylinder 27 and the second-stage cylinder 28 are all installed with a limiting component on the outer side of the top end. The limiting component includes a ring cover 41, and a plurality of screws 45 are installed on the inner wall of the ring cover 41 with evenly spaced threads. A rotating tooth 46 is installed at the inner end of the screw 45, and a polygonal hole 47 is provided on the rotating tooth 46. A ring tooth 44 meshing with the rotating tooth 46 is installed on the bottom side of the ring cover 41. A fourth motor 42 is installed on the outside of the ring cover 41, and a polygonal shaft 43 is installed at the output end of the fourth motor 42, and the polygonal shaft 43 is located in the polygonal hole 47;

[0041] Multi-stage cylinder telescopic structure. The fixed cylinder 26, the first-stage cylinder 27, the second-stage cylinder 28 and the third-stage cylinder 29 are nested in sequence to form a four-stage telescopic structure. A wide range of height adjustment is achieved through step-by-step lifting. The rotational connection between the ball head 30 and the ball seat 15 allows the top support mechanism and the second support mechanism 2 to be adaptively tilted to match the spatial posture of the ribbon steel structure. The second hydraulic cylinder 31 serves as the core power source, and its telescopic end acts on each stage of the cylinder in sequence through the rod seat 32. For the first-stage lifting, the rod seat 32 passes through the first bottom hole 37 and directly pushes the bottom of the fixed cylinder 26, driving the first-stage cylinder 27, the second-stage cylinder 28 and the third-stage cylinder 29 to rise synchronously. For the second-stage lifting, the rotating plate 40 in the first-stage cylinder 27 rotates to close the first bottom hole 37, and the rod seat 32 pushes the rotating plate 40 to drive the second-stage cylinder 28 and the third-stage cylinder 29 to rise. For the third-stage lifting, the rotating plate 40 in the second-stage cylinder 28 rotates to close the second bottom hole 38, and the rod seat 32 pushes the rotating plate 40 to drive the third-stage cylinder 29 to rise alone.

[0042] The fourth motor 42 drives the polygonal shaft 43 to rotate, which in turn drives a rotating tooth 46 to rotate. Through the meshing of the ring gear 44, all the screws 45 are synchronously screwed in / out. The screws 45 cooperate with the threaded holes of the cylinders at each level to achieve mechanical locking after extension and retraction to prevent retraction.

[0043] The third motor 39 drives the rotating plate 40 to rotate and selectively close or open the first bottom hole 37 and the second bottom hole 38 to control the transmission path of the hydraulic pressure and realize graded lifting.

[0044] Construction method: Move the device to the support point when the ribbon steel structure is installed, the lifting and adjusting mechanism 3 is in the retracted state, and the segmented ribbon steel structure is hoisted to the second supporting mechanism 2 by the crane. At this time, the ribbon steel structure is in contact with the movable column 19. Under the action of the spring 17, the movable columns 19 at different points are in contact with the surface of the special-shaped ribbon steel structure. Then the first hydraulic cylinder 21 drives the sealing plate 22 to move up in the movable groove 25 until the sealing seat 23 of the sealing plate 22 blocks the air hole 24, thereby sealing the inner cavity 16, and then limiting the position of the piston 18 and the movable column 19 in each inner cavity 16. According to the placement position of the ribbon steel structure, the turntable 12 is driven to rotate by the first motor 10 and the second motor 11, and then through the arc The shaped groove 13 acts on the guide rod 14, driving the first slide 8 and the second slide 9 to move synchronously along the guide rail 7, thereby adjusting the spacing between the lifting adjustment mechanism 3, and the fourth motor 42 on the limiting assembly of the lifting adjustment mechanism 3 drives the polygonal shaft 43 to rotate, thereby driving one of the rotating teeth 46 to rotate, driving the meshing ring gear 44 to rotate synchronously, and then the ring gear 44 drives the meshing multiple rotating teeth 46 to rotate, and the rotating screw 45 moves on the ring cover 41. At the same time, the polygonal shaft 43 moves in the polygonal hole 47, and the third motor 39 drives the rotating plate 40 to rotate to realize the opening and closing of the first bottom hole 37 and the second bottom hole 38. First, the secondary cylinder 28 is lifted and lowered. At this time, the screw 45 on the limiting assembly of the primary cylinder 27 is screwed into the third threaded hole 3 5, the screw 45 on the limiting assembly of the secondary cylinder 28 is screwed into the fourth threaded hole 36, the telescopic end of the second hydraulic cylinder 31 passes through the first bottom hole 37 and the second bottom hole 38 and contacts the first slide 8, as the second hydraulic cylinder 31 extends, the primary cylinder 27, the secondary cylinder 28 and the tertiary cylinder 29 move up in the fixed cylinder 26 until the screw 45 on the limiting assembly of the fixed cylinder 26 corresponds to the first threaded hole 33, the screw 45 is screwed into the first threaded hole 33, and the fixed connection between the fixed cylinder 26 and the primary cylinder 27 is achieved, and then the screw 45 on the limiting assembly of the primary cylinder 27 is unscrewed out of the third threaded hole 35, at this time, the second hydraulic cylinder 31 is retracted until the rod seat 32 is located in the primary cylinder 27, at this time the rotating plate 40 in the primary cylinder 27 rotates to the first bottom hole 37, and the second The hydraulic cylinder 31 extends, and the rod seat 32 acts on the rotating plate 40 in the first cylinder 27, thereby driving the second cylinder 28 and the tertiary cylinder 29 to move upward in the first cylinder 27 until the screw 45 on the limiting assembly of the first cylinder 27 corresponds to the second threaded hole 34, the screw 45 is screwed into the second threaded hole 34, and the screw 45 on the limiting assembly of the second cylinder 28 is screwed out of the fourth threaded hole 36, and the second hydraulic cylinder 31 contracts until the rod seat 32 is located in the second cylinder 28. At this time, the rotating plate 40 in the second cylinder 28 rotates to the second bottom hole 38, the second hydraulic cylinder 31 extends, and the rod seat 32 acts on the rotating plate 40 in the second cylinder 28, thereby driving the tertiary cylinder 29 to move upward in the second cylinder 28, and the fixed cylinder 26, the first cylinder 27, the second cylinder 28 and the tertiary cylinder 29 cooperate with each other.Adjust the overall height of the lifting and adjusting mechanism 3, raise the steel structure of the streamer to the installation position, and adjust the inclination angle of the second supporting mechanism 2 and the steel structure of the streamer to different heights of different lifting and adjusting mechanisms 3.

[0045] The use of multi-stage telescopic cylinders in conjunction with hydraulic drive and limit components enables high-precision, multi-stage height adjustment to meet the construction requirements of large-span special-shaped steel structures with complex spatial postures. The sliding seat linkage design of the first and second support mechanisms can dynamically adjust the distribution spacing of the lifting and adjusting mechanism 3 to flexibly match the support points of different cross-sections of the ribbon steel structure.

[0046] Adaptive support and stability: a spring 17, a piston 18, and a movable column 19 are arranged inside the top shell 5, which automatically conforms to the irregular curved surface during hoisting. The hydraulic cylinder locks the air hole 24 to fix the contact point, ensuring uniform load distribution and avoiding local stress concentration. The connection between the ball head 30 and the ball seat 15 allows each lifting adjustment mechanism 3 to fine-tune the angle. Combined with different height adjustments, the spatial posture of the streamer steel structure is accurately controlled to reduce installation errors.

[0047] The limit assembly adopts a linkage structure of ring gear 44 and rotating gear 46. A single motor drives multiple screws 45 to move synchronously, quickly locking the threaded holes of each level of the cylinder, improving the efficiency and reliability of telescopic fixation. The rotating plate 40 cooperates with the hydraulic cylinder to achieve step-by-step lifting. At the same time, different cylinders can be combined according to specific height requirements, simplifying the multi-stage telescopic control logic and reducing operational complexity.

[0048] Integrated hoisting, adaptive fitting, and multi-point synchronous adjustment functions enable one-time positioning of special-shaped steel structures, reducing repeated adjustments and shortening construction periods. Segmented height adjustment and tilt control meet the complex installation requirements of large-span and variable-section streamers, making them particularly suitable for the construction of curved or cantilevered structures.

[0049] The mechanical linkage design reduces manual intervention and the risk of working at height. The modular structure facilitates transportation and assembly and is suitable for large construction sites. Precise load distribution and posture control can reduce the risk of steel structure deformation, improve construction quality, and reduce subsequent correction costs.

[0050] Through innovative multi-level adjustment, adaptive support and coordinated drive mechanism, the device effectively solves the problems of difficult positioning and poor stability in the construction of special-shaped ribbon steel structures, and is highly efficient, safe and economical.

[0051] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A construction device for a large-span, special-shaped, variable-section ribbon steel structure, characterized in that: The invention comprises a first supporting mechanism (1), a second supporting mechanism (2) and a lifting and adjusting mechanism (3), wherein a plurality of lifting and adjusting mechanisms (3) are installed between the first supporting mechanism (1) and the second supporting mechanism (2), the first supporting mechanism (1) comprises a bottom shell (4), the second supporting mechanism (2) comprises a top shell (5), a plurality of guide rails (7) are provided at equal angles on the top side of the bottom shell (4) and the bottom side of the top shell (5), a first slide seat (8) is slidably installed on the guide rail (7) of the bottom shell (4), a second slide seat (9) is slidably installed on the guide rail (7) of the top shell (5), the first slide seat (8) and the second slide seat (9) are also fixedly installed in the middle of the bottom shell (4) and the top shell (5), a plurality of inner cavities (16) are opened in the top shell (5), a spring (17) is installed in the inner cavity (16), a piston (18) is installed on the top of the spring (17), and a movable column (19) is installed on the piston (18); The second supporting mechanism (2) comprises a fixed cylinder (26) fixedly connected to the first slide (8), a first-stage cylinder (27) is telescopically installed in the cylinder (26), a second-stage cylinder (28) is telescopically installed in the first-stage cylinder (27), a third-stage cylinder (29) is telescopically installed in the second-stage cylinder (28), a ball head (30) is installed at the top end of the third-stage cylinder (29), and the ball head (30) is rotatably connected to the ball seat (15) on the bottom side of the second slide (9).

2. The construction device of a large-span special-shaped variable-section streamer steel structure according to claim 1 is characterized in that: A first motor (10) and a second motor (11) are installed in a first slide seat (8) and a second slide seat (9) located in the middle of the bottom shell (4) and the top shell (5), respectively. Output ends of the first motor (10) and the second motor (11) are located in the bottom shell (4) and the top shell (5), respectively. A turntable (12) is installed in the turntable (12), and a plurality of arc grooves (13) are opened at equal angles.

3. The construction device of a large-span special-shaped variable-section ribbon steel structure according to claim 2 is characterized in that: The bottom shell (4) and the top shell (5) are provided with a plurality of slide grooves (6) parallel to the guide rail (7) at equal angles, and the bottom side of the first slide seat (8) and the top side of the second slide seat (9) are provided with guide rods (14) penetrating the slide grooves (6) and the arc grooves (13).

4. The construction device of a large-span special-shaped variable-section ribbon steel structure according to claim 3 is characterized in that: The outer side of the top shell (5) is provided with a plurality of installation grooves (20), a first hydraulic cylinder (21) is installed in the installation groove (20), and a sealing plate (22) is installed in the movable groove (25) of the top shell (5) at the telescopic end of the first hydraulic cylinder (21); An air hole (24) is provided on the bottom side of the inner cavity (16), and a plurality of sealing seats (23) adapted to the air holes (24) are provided on the sealing plate (22).

5. The construction device of a large-span special-shaped variable-section streamer steel structure according to claim 4 is characterized in that: A plurality of first threaded holes (33) are provided on the outer side of the top end of the first-stage cylinder (27), a plurality of second threaded holes (34) and a third threaded hole (35) are provided at both ends of the second-stage cylinder (28), a plurality of fourth threaded holes (36) are provided at the top end of the third-stage cylinder (29), and a first bottom hole (37) and a second bottom hole (38) are provided at the bottom ends of the first-stage cylinder (27) and the second-stage cylinder (28), respectively.

6. The construction device of a large-span special-shaped variable-section streamer steel structure according to claim 5 is characterized in that: A third motor (39) is installed at the bottom ends of the first-stage cylinder (27) and the second-stage cylinder (28); an output end of the third motor (39) is located inside the first-stage cylinder (27) and the second-stage cylinder (28); a rotating plate (40) is installed, and the diameter of the rotating plate (40) is larger than the diameters of the first bottom hole (37) and the second bottom hole (38).

7. The construction device of a large-span special-shaped variable-section ribbon steel structure according to claim 6 is characterized in that: A second hydraulic cylinder (31) is installed in the third-stage cylinder (29), and a rod seat (32) is installed at the telescopic end of the second hydraulic cylinder (31). The diameter of the rod seat (32) is smaller than the diameters of the first bottom hole (37) and the second bottom hole (38).

8. The construction device for a large-span, special-shaped, variable-section ribbon steel structure according to claim 7 is characterized in that: The outer sides of the top ends of the fixed cylinder (26), the first-stage cylinder (27) and the second-stage cylinder (28) are all equipped with a limiting assembly, the limiting assembly comprising a ring cover (41), the inner wall of the ring cover (41) is threaded with a plurality of screw rods (45) at equal intervals, the inner ends of the screw rods (45) are equipped with rotating teeth (46), and the rotating teeth (46) are provided with polygonal holes (47).

9. The construction device of a large-span special-shaped variable-section streamer steel structure according to claim 8 is characterized in that: A ring tooth (44) meshing with a rotating tooth (46) is installed on the bottom side of the ring cover (41), a fourth motor (42) is installed on the outside of the ring cover (41), a polygonal shaft (43) is installed on the output end of the fourth motor (42), and the polygonal shaft (43) is located in the polygonal hole (47).

10. The construction method of a construction device for a large-span special-shaped variable-section streamer steel structure according to claim 1, characterized in that: The specific steps of this construction method are as follows: Step 1: Move the device to the support point position when the streamer steel structure is installed, the lifting and adjusting mechanism (3) is in a retracted state, and the segmented streamer steel structure is hoisted onto the second supporting mechanism (2) by a crane. At this time, the streamer steel structure is in contact with the movable column (19). Under the action of the spring (17), the movable columns (19) at different points are in contact with the surface of the special-shaped streamer steel structure. Then the first hydraulic cylinder (21) drives the sealing plate (22) to move upward in the movable groove (25) until the sealing seat (23) of the sealing plate (22) blocks the air hole (24), thereby achieving sealing of the inner cavity (16), and then limiting the position of the piston (18) and the movable column (19) in each inner cavity (16); Step 2: According to the placement position of the ribbon steel structure, the first motor (10) and the second motor (11) are driven to rotate the turntable (12), and then the arc groove (13) acts on the guide rod (14), driving the first slide (8) and the second slide (9) to move synchronously along the guide rail (7), thereby adjusting the distance between the lifting and adjusting mechanisms (3); Step 3: The fourth motor (42) on the limit assembly of the lifting and adjusting mechanism (3) drives the polygonal shaft (43) to rotate, and then drives one of the rotating teeth (46) to rotate, and drives the meshing ring gear (44) to rotate synchronously, and then the ring gear (44) drives the meshing multiple rotating teeth (46) to rotate, and the rotating screw (45) moves on the ring cover (41), and at the same time the polygonal shaft (43) moves in the polygonal hole (47), and the third motor (39) drives the rotating plate (40) to rotate, so as to realize the opening and closing of the first bottom hole (37) and the second bottom hole (38), and firstly, the secondary cylinder (28) is lifted and lowered, and at this time, the screw (45) on the limit assembly of the primary cylinder (27) is screwed into the third threaded hole (3 5), the screw (45) on the limiting assembly of the secondary cylinder (28) is screwed into the fourth threaded hole (36), the telescopic end of the second hydraulic cylinder (31) passes through the first bottom hole (37) and the second bottom hole (38) and contacts the first slide seat (8), as the second hydraulic cylinder (31) extends, the primary cylinder (27), the secondary cylinder (28) and the tertiary cylinder (29) move up in the fixed cylinder (26) until the screw (45) on the limiting assembly of the fixed cylinder (26) corresponds to the first threaded hole (33), the screw (45) is screwed into the first threaded hole (33), and the fixed connection between the fixed cylinder (26) and the primary cylinder (27) is realized, and then the screw (45) on the limiting assembly of the primary cylinder (27) is screwed out of the first threaded hole (33). The third threaded hole (35) is formed. At this time, the second hydraulic cylinder (31) is retracted until the rod seat (32) is located in the first cylinder (27). At this time, the rotating plate (40) in the first cylinder (27) rotates to the first bottom hole (37). The second hydraulic cylinder (31) is extended, and the rod seat (32) acts on the rotating plate (40) in the first cylinder (27), thereby driving the second cylinder (28) and the third cylinder (29) to move upward in the first cylinder (27) until the screw (45) on the limiting assembly of the first cylinder (27) corresponds to the second threaded hole (34). The screw (45) is screwed into the second threaded hole (34), and the screw (45) on the limiting assembly of the second cylinder (28) is screwed out of the fourth threaded hole (36). The second hydraulic cylinder ( The rod seat (31) is retracted until the rod seat (32) is located in the secondary cylinder (28). At this time, the rotating plate (40) in the secondary cylinder (28) rotates to the second bottom hole (38), the second hydraulic cylinder (31) is extended, and the rod seat (32) acts on the rotating plate (40) in the secondary cylinder (28), thereby driving the tertiary cylinder (29) to move upward in the secondary cylinder (28). The fixed cylinder (26), the primary cylinder (27), the secondary cylinder (28) and the tertiary cylinder (29) cooperate with each other to adjust the overall height of the lifting adjustment mechanism (3), and the streamer steel structure is raised to the installation position. Different lifting adjustment mechanisms (3) have different adjustment heights, and the inclination angles of the second support mechanism (2) and the streamer steel structure are adjusted.

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