Large-span truss type roof steel structure assembling and lifting device and using method

Abstract

The invention relates to the technical field of large-span truss type roof steel structure splicing, and discloses a large-span truss type roof steel structure splicing lifting device and a using method.The large-span truss type roof steel structure splicing lifting device comprises a base and a lifting seat, a first extension seat is slidably connected into the lifting seat, guide grooves are formed in the inner wall of the lifting seat, guide blocks on the two sides of the first extension seat slide in the guide grooves, and a first motor is arranged on one side of the lifting seat; the output shaft gear is meshed with the gear ring; limiting grooves are formed in the two sides of the first extension seat, and limiting blocks on the two sides of the second extension seat slide in the limiting grooves. A second motor is arranged on one side of the first extension seat, and a second lead screw is arranged on an output shaft of the first extension seat. A clamping seat is arranged at one end of the second extension seat, and a sliding block is arranged in the second extension seat. Long-neck screws are arranged on two sides of the clamping seat; one end is connected with a clamping plate through a bearing; according to the device, length self-adaption is achieved through sliding stretching and lead screw transmission, falling deformation of the end of a steel structure is avoided, stability is improved, the clamping plates are matched with the long-neck screws to form rigid clamping, and shaking is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of large-span truss-type roof steel structure assembly, and in particular to a large-span truss-type roof steel structure assembly and lifting device and a use method thereof. Background Art

[0002] Large-span truss roof steel structures are widely used in large venues, airport terminals, industrial plants, and other construction fields due to their uniform stress distribution, lightweight structure, and strong span coverage. During the construction process of this type of steel structure, some components must be assembled on the ground first, and then lifted to a preset height by a lifting device for aerial docking and assembly. Due to its large span and uneven weight distribution, the lifting process places extremely high demands on support stability, length adaptability, and clamping firmness. The performance of the lifting device directly affects assembly efficiency, structural safety, and construction period. Therefore, the development of a highly adaptable and stable lifting device has become an important issue in the field of large-span truss roof steel structure construction.

[0003] In the prior art, the lifting devices used for assembling large-span truss roof steel structures have obvious limitations. On the one hand, the length of the lifting seat is mostly fixed or can only be extended and retracted in a single stage, and the support range cannot be flexibly adjusted according to the actual span of the steel structure. When facing a steel structure with a large span, its two ends often exceed the support range of the lifting seat, resulting in the ends being in a suspended state. During the lifting process, they fall due to lack of effective support, which not only easily causes deformation of the ends of the steel structure and affects the subsequent assembly accuracy, but also causes the overall structure to shake due to uneven force, posing a safety risk. On the other hand, the clamping structure design of the existing device is simple, and mostly uses a single bolt or clip for fixing. It is impossible to achieve precise fitting and rigid clamping of the ends of the steel structure. Lateral sliding or displacement of the steel structure is likely to occur during the lifting process, further exacerbating the instability of the lifting process, and it is difficult to meet the high-precision and high-safety assembly requirements of large-span truss roof steel structures. Summary of the Invention

[0004] In order to make up for the above shortcomings, the present invention provides a large-span truss roof steel structure assembly and lifting device and a method of use, aiming to improve the problem that the length of the existing lifting seat is mostly fixed or only has a single-stage telescopic function. When facing steel structures with different spans, the two ends often exceed the support range of the lifting seat, resulting in the ends being in a suspended state, and falling during the lifting process due to lack of effective support.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a large-span truss roof steel structure assembly and lifting device, comprising a base and a lifting seat, wherein an extension seat 1 is slidably connected to the lifting seat, a guide groove is provided on the inner wall of the lifting seat, and guide blocks slidably connected to the guide groove are provided on the outer walls of both sides of the extension seat; a screw rod 1 is rotatably connected to one of the guide grooves through a bearing, a gear ring is welded on the outer wall of the screw rod 1, and a guide block is threadedly sleeved on the outside of the screw rod 1; a motor 1 is fixed to the outer wall of one side of the lifting seat by bolts, and the output shaft of the motor 1 is provided with a gear meshing with the gear ring. ; The extension seat 1 is slidably connected to the extension seat 2, and the outer walls on both sides of the extension seat 1 are provided with limit grooves, and the outer walls on both sides of the extension seat 2 are provided with limit blocks slidably connected to the limit grooves; the outer wall of one side of the extension seat is fixed with the motor 2 by bolts, and the output shaft of the motor 2 is provided with the screw rod 2, and the extension seat 2 is threadedly sleeved on the outside of the screw rod 2; one end of the extension seat 2 is provided with a clamping seat, and a slider is slidably connected to the clamping seat, and the top of the slider is provided with a plywood slidably connected to the top of the clamping seat; long neck screws are threadedly inserted into the outer walls on both sides of the clamping seat, and one end of the long neck screw is rotatably connected to the outer wall of one side of the plywood through a bearing.

[0006] Preferably, the outer walls on both sides of the base are provided with storage seats, a mounting block is slidably connected to the storage seat, a moving wheel is fixed to the outer wall of the bottom of the mounting block by bolts, and a mounting screw is threadedly inserted into the top of the storage seat.

[0007] Preferably, a spring groove is provided on the outer wall of the bottom of the mounting block, and a push-back spring connected to the spring groove is provided on the inner wall of the bottom of the storage seat.

[0008] Preferably, the base is provided with a protective seat near the outer wall of the storage seat, a two-way hydraulic cylinder is fixed to the inner wall of the top of the protective seat by bolts, and the output end of the two-way hydraulic cylinder is provided with a push block inserted into the storage seat and in contact with the mounting block.

[0009] Preferably, a lifting column is welded to the outer wall of the top of the base, and a lifting block is provided on the outer wall of one side of the lifting seat, which is slidably connected to the lifting column.

[0010] Preferably, the outer wall of the top of the base is rotatably connected to a screw rod through a bearing, the lifting block is threadedly sleeved on the outside of the screw rod, and a driven gear sleeve is welded to the bottom end of the screw rod.

[0011] Preferably, the bottom inner wall of the base is fixed with a motor three by bolts, the output shaft of the motor three is provided with a driving gear sleeve, and the driving gear sleeve and the driven gear sleeve are externally meshed and sleeved with a transmission chain.

[0012] Preferably, an anti-slip seat is provided on the outer wall of one side of the lifting seat and fits with the outer wall of the lifting column, an insert block is slidably connected to the anti-slip seat, and a plurality of equally distributed slots are provided on the outer wall of one side of the lifting column, and the insert blocks are inserted into the slots; a return spring connected to the insert block is provided on the inner wall of the anti-slip seat, and a one-way hydraulic cylinder is fixed to the inner wall of the anti-slip seat by bolts, and an extrusion block in contact with the insert block is provided at the output end of the one-way hydraulic cylinder.

[0013] Preferably, an AI vision camera is fixed to the outer wall of one side of the splint by bolts, and a controller is fixed to the outer wall of one side of one lifting column by bolts; the AI ​​vision camera, motor one, motor two, motor three, bidirectional hydraulic cylinder and unidirectional hydraulic cylinder are all electrically connected to the controller through wires.

[0014] A method for using a large-span truss roof steel structure assembly and lifting device comprises the following steps:

[0015] S1. Length Adaptation Adjustment: First, start Motor 2. Its output shaft drives Screw 2 to rotate. Since Extension Base 2 is threadedly connected to Screw 2 and the limit block slides along the limit slot of Extension Base 1, Extension Base 2 will drive the clamping base to extend horizontally. If the clamping base still does not touch the end of the steel structure after Extension Base 2 is fully extended, start Motor 1. The gear of Motor 1 engages with the ring gear to drive Screw 1 to rotate, causing the guide block to slide along the guide slot, driving Extension Base 1 to extend from the lifting base until the clamping base adapts to the length of the steel structure.

[0016] S2. Clamping and securing the steel structure: Place the steel structure on top of the lifting base, extension base 1, and extension base 2. Synchronously rotate the long-neck screws on both sides of the clamping base. The screws push the clamping plates through the bearings. The sliders slide along the inside of the clamping base to provide auxiliary guidance, ensuring that the clamping plates fit tightly against the ends of the steel structure, achieving rigid fixation.

[0017] S3. Synchronous Lift Drive: Motor 3 is started, and its output shaft drives the active gear sleeve to rotate. This engages the driven gear sleeve through the transmission chain, driving the screw to rotate. The lifting block, threadedly connected to the screw and sliding along the lifting column, drives the lifting seat and steel structure to rise vertically, achieving synchronous lifting on both sides.

[0018] S4. Anti-collision monitoring: During the lifting process, the AI ​​vision camera on the splint captures the surrounding environment in real time and transmits the image data to the controller. If an obstacle is detected, the controller immediately shuts down Motor 3. If there is no obstacle, the lifting continues to the preset height.

[0019] S5. Anti-slip lock: After reaching the target height, motor three is turned off, and the one-way hydraulic cylinder is activated. Its output end pushes the extrusion block to squeeze the insert block. The insert block overcomes the return spring force and inserts into the slot of the lifting column, rigidly locking the lifting seat and the lifting column.

[0020] S6. Moving and fixing the device: When it needs to be moved, start the two-way hydraulic cylinder, and the push block squeezes the inclined surface of the mounting block, causing the mounting block to overcome the elastic force of the push-back spring and descend, driving the moving wheel to touch the ground. After pushing the base to the specified position, screw the mounting screws through the storage base and into the ground to complete the base fixation.

[0021] The present invention has the following beneficial effects:

[0022] 1. In the present invention, firstly, the device realizes adaptive adaptation to large-span truss roof steel structures of different lengths through the sliding telescopic structure between the lifting seat, the extension seat 1 and the extension seat 2, combined with the motor-driven screw transmission mechanism.

[0023] When motor two drives screw rod two to rotate, extension seat two can be extended smoothly along extension seat one. If extension seat two still cannot adapt to the length of the steel structure after being fully extended, motor one can drive screw rod one to rotate through the engagement of the gear and the ring gear, driving extension seat one to further extend along the lifting seat. This multi-stage linkage adjustment method breaks through the limitation of the fixed length of the traditional lifting seat, ensuring that no matter how large the span of the steel structure is, its two ends can be stably supported by the clamping seat, effectively avoiding the problem of falling and deformation caused by unsupported ends, and significantly improving the structural stability during the lifting process.

[0024] At the same time, the long-neck screws on both sides of the clamping seat cooperate with the slider and the splint to push the splint to fit the end of the steel structure precisely by rotating the screws synchronously, forming a rigid clamp to prevent the steel structure from shaking or displacing laterally during lifting, further ensuring the safety and accuracy of the assembly process.

[0025] 2. In the present invention, the combination of the storage seat, the mounting block and the movable wheels, together with the push block driven by the bidirectional hydraulic cylinder, can not only enable the movable wheels to quickly touch the ground to realize flexible transportation when moving is required, but also can store the movable wheels into the storage seat through the push-back spring when fixed, and then use the mounting screws to firmly fix the base to the ground, taking into account both the convenience of movement and the stability of placement.

[0026] The lifting mechanism, which consists of a lifting column, a screw and a motor, drives the lifting block to rise steadily along the column through the synchronous transmission of the active gear sleeve, the transmission chain and the driven gear sleeve, thereby realizing the vertical lifting of the steel structure, ensuring the same lifting speed on both sides, and avoiding distortion of the structure due to uneven force.

[0027] The insert in the anti-drop seat cooperates with the slot in the lifting column, and can quickly form a mechanical lock under the push of the one-way hydraulic cylinder. Combined with the reset function of the return spring, it effectively prevents the lifting seat from falling accidentally, providing double safety protection for high-altitude assembly.

[0028] The electrical connection between the AI ​​vision camera and the controller can monitor the upper environment in real time during the lifting process. Once an obstacle is identified, the lifting motor will be immediately shut down to prevent the steel structure from colliding with buildings or other objects. This not only protects the integrity of the steel structure but also reduces the risk of equipment damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the three-dimensional structure of a large-span truss-type roof steel structure assembly and lifting device proposed by the present invention;

[0030] Figure 2 This is a schematic diagram of the internal top view of the lifting seat of a large-span truss roof steel structure assembly and lifting device proposed by the present invention;

[0031] Figure 3 This is a schematic diagram of the clamping seat structure of a large-span truss-type roof steel structure assembly and lifting device proposed by the present invention;

[0032] Figure 4 This is a schematic diagram of the storage base structure of a large-span truss roof steel structure assembly and lifting device proposed by the present invention;

[0033] Figure 5 This is a schematic diagram of the lifting column structure of a large-span truss roof steel structure assembly and lifting device proposed by the present invention;

[0034] Figure 6 This is a schematic diagram of the anti-slip seat structure of a large-span truss roof steel structure assembly and lifting device proposed by the present invention;

[0035] Figure 7 This is a schematic diagram of the internal structure of the base of a large-span truss roof steel structure assembly and lifting device proposed by the present invention, viewed from above.

[0036] Legend:

[0037] 1. Base; 2. Lifting seat; 3. Extension seat 1; 4. Guide groove; 5. Guide block; 6. Screw 1; 7. Ring gear; 8. Motor 1; 9. Gear; 10. Extension seat 2; 11. Clamping seat; 12. Limiting groove; 13. Limiting block; 14. Motor 2; 15. Screw 2; 16. Clamping plate; 17. Slider; 18. Long-neck screw; 19. Storage seat; 20. Mounting block; 21. Moving wheel; 22. Push-back spring; 23. , protective seat; 24, two-way hydraulic cylinder; 25, push block; 26, mounting screw; 27, lifting column; 28, lifting block; 29, screw; 30, driven gear sleeve; 31, motor three; 32, driving gear sleeve; 33, transmission chain; 34, anti-slip seat; 35, plug-in block; 36, slot; 37, return spring; 38, one-way hydraulic cylinder; 39, extrusion block; 40, AI visual camera; 41, controller; 42, spring slot. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0039] Embodiment one, refer to Figures 1 to 7 A large-span truss roof steel structure assembling and lifting device, comprising a base 1 and a lifting seat 2, a extension seat one 3 is slidably connected in the lifting seat 2, a guide groove 4 is formed in the inner wall of the lifting seat 2, and guide blocks 5 slidably connected in the guide groove 4 are arranged on the outer walls of the extension seat one 3; a lead screw one 6 is rotatably connected in one of the guide grooves 4 through a bearing, a gear ring 7 is welded on the outer wall of the lead screw one 6, and one of the guide blocks 5 is threadedly sleeved on the outside of the lead screw one 6; a motor one 8 is fixed on the outer wall of the lifting seat 2 through bolts, and a gear wheel 9 engaged with the gear ring 7 is arranged on the output shaft of the motor one 8; a extension seat two 10 is slidably connected in the extension seat one 3, limit grooves 12 are formed in the outer walls of the extension seat one 3, and limit blocks 13 slidably connected in the limit grooves 12 are arranged on the outer walls of the extension seat two 10; a motor two 14 is fixed on the outer wall of the extension seat one 3 through bolts, a lead screw two 15 is arranged on the output shaft of the motor two 14, and the extension seat two 10 is threadedly sleeved on the outside of the lead screw two 15; a clamping seat 11 is arranged at one end of the extension seat two 10, a sliding block 17 is slidably connected in the clamping seat 11, and a clamping plate 16 slidably connected on the top of the clamping seat 11 is arranged on the top of the sliding block 17; long neck screws 18 are threadedly inserted into the outer walls of the clamping seat 11, and one end of the long neck screws 18 is rotatably connected to the outer wall of one side of the clamping plate 16 through a bearing.

[0040] The motor two 14 drives the lead screw two 15 to make the extension seat two 10 drive the clamping seat 11 to extend out, the motor one 8 drives the lead screw one 6 to make the extension seat one 3 extend out through the gear wheel 9 and the gear ring 7, and the long neck screws 18 push the clamping plate 16 to clamp the steel structure, and the multi-stage telescopic structure is suitable for different lengths and rigid clamping to avoid shaking, and the length adjustment and stable fixation are realized by the cooperation of the multi-stage sliding structure and the threaded transmission.

[0041] Embodiment two, refer to Figures 1 to 7On the basis of embodiment 1, the outer walls on both sides of the base 1 are provided with a storage seat 19, and the storage seat 19 is slidably connected with a mounting block 20. The outer wall of the bottom of the mounting block 20 is fixed with a moving wheel 21 by a bolt, and the top of the storage seat 19 is threaded with a mounting screw 26. The mounting block 20 in the storage seat 19 can drive the moving wheel 21 to extend or retract, and the mounting screw 26 fixes the base 1, taking into account both convenient movement and stable placement due to the sliding design of the storage seat and the fixing effect of the mounting screw; a spring groove 42 is provided on the outer wall of the bottom of the mounting block 20, and a push-back spring 22 connected to the spring groove 42 is provided on the inner wall of the bottom of the storage seat 19. The push-back spring 22 connects the spring groove 42 and the storage seat 19, which can push the mounting block 20 to move up and retract the moving wheel 21. Automatic reset is achieved by spring force; a protective seat 23 is provided on the outer wall of the base 1 near the storage seat 19, and a two-way hydraulic cylinder 24 is fixed to the inner wall of the top of the protective seat 23 by bolts. The output end of the two-way hydraulic cylinder 24 is provided with a push block 25 inserted into the storage seat 19 and in contact with the mounting block 20. The two-way hydraulic cylinder 24 drives the push block 25 to squeeze the inclined surface of the mounting block 20, so that the moving wheel 21 can quickly touch the ground and is easy to move because the driving force of the hydraulic cylinder directly acts on the mounting block; a lifting column 27 is welded to the outer wall of the top of the base 1, and a lifting block 28 is provided on the outer wall of one side of the lifting seat 2, which is slidably connected to the lifting column 27. The lifting block 28 slides along the lifting column 27 to provide vertical guidance for the lifting seat 2, ensuring that the lifting process is smooth and not deviated due to the limiting and guiding effect of the column.

[0042] Example 3, refer to Figures 1 to 7On the basis of the first or second embodiment, the outer wall of the top of the base 1 is connected to the screw 29 through a bearing, the lifting block 28 is threadedly sleeved on the outside of the screw 29, and a driven gear sleeve 30 is welded to the bottom end of the screw 29. When the screw 29 rotates, the lifting block 28 is driven to rise vertically through the thread transmission, and the rotational motion is converted into vertical lifting. The direction of motion is converted due to the thread matching; the inner wall of the bottom of the base 1 is fixed with a motor 31 by bolts, and the output shaft of the motor 31 is provided with an active gear sleeve 32, and the active gear sleeve 3 2 is meshed with the driven gear sleeve 30 on the outside with a transmission chain 33, and the motor 31 drives the active gear sleeve 32 to drive the driven gear sleeve 30 through the transmission chain 33, so that the screws 29 on both sides rotate synchronously, ensuring that the lifting speed of both sides of the lifting seat 2 is consistent due to the synchronization of the chain drive; the outer wall of one side of the lifting seat 2 is provided with an anti-slip seat 34 that fits with the outer wall of the lifting column 27, and an insert block 35 is slidably connected to the anti-slip seat 34. The outer wall of one side of the lifting column 27 is provided with a number of equally spaced slots 36, and the insert block 35 is inserted into the insert block The inner wall of the anti-slip seat 34 is provided with a return spring 37 connected to the insert block 35, and the inner wall of the anti-slip seat 34 is fixed with a one-way hydraulic cylinder 38 by bolts. The output end of the one-way hydraulic cylinder 38 is provided with an extrusion block 39 in contact with the insert block 35. The one-way hydraulic cylinder 38 pushes the extrusion block 39 to make the insert block 35 overcome the elastic force of the return spring 37 and insert it into the slot 36, locking the lifting seat 2 and the lifting column 27 to prevent accidental falling due to the mechanical locking structure and the spring reset function; the outer wall of one side of the splint 16 is fixed by bolts There is an AI vision camera 40, and a controller 41 is fixed to the outer wall of one side of one lifting column 27 by bolts; the AI ​​vision camera 40, motor 1 8, motor 2 14, motor 3 31, bidirectional hydraulic cylinder 24 and unidirectional hydraulic cylinder 38 are all electrically connected to the controller 41 through wires. The AI ​​vision camera 40 takes real-time photos and transmits the image to the controller 41. When encountering an obstacle, the controller 41 immediately turns off motor 3 31 to avoid collision with the steel structure due to the instant response of visual recognition and electrical signal control.

[0043] Example 4, refer to Figures 1 to 7 A method for using a large-span truss roof steel structure assembly and lifting device comprises the following steps:

[0044] S1. Length Adaptation Adjustment: First, start Motor 2 (14). Its output shaft drives Screw 2 (15) to rotate. Because Extension Base 2 (10) is threadedly connected to Screw 2 (15), and Limit Block 13 slides along Limit Slot 12 of Extension Base 1 (3), Extension Base 2 (10) drives Clamping Base 11 to extend horizontally. If, after Extension Base 2 (10) is fully extended, Clamping Base 11 still does not touch the end of the steel structure, start Motor 1 (8). Motor 1 (8) engages Gear 9 with Ring Gear 7 to drive Screw 1 (6) to rotate, causing Guide Block 5 to slide along Guide Slot 4, driving Extension Base 1 (3) to extend from Lifting Base 2 until Clamping Base 11 matches the length of the steel structure.

[0045] S2. Clamping and fixing of steel structure: Place the steel structure on the top of the lifting seat 2, the extension seat 3 and the extension seat 10, and rotate the long-neck screws 18 on both sides of the clamping seat 11 synchronously. The screw pushes the splint 16 through the bearing to move the slider 17 along the inner sliding guide of the clamping seat 11, so that the splint 16 fits tightly to the end of the steel structure to complete the rigid fixation;

[0046] S3 synchronous lifting drive: Start the motor three 31, its output shaft drives the active gear sleeve 32 to rotate, the driven gear sleeve 30 engages the transmission chain 33, and the drive screw 29 rotates; the lifting block 28 is threadedly connected to the screw 29 and slides along the lifting column 27, driving the lifting seat 2 and the steel structure to rise vertically, achieving synchronous lifting on both sides;

[0047] S4. Anti-collision monitoring: During the lifting process, the AI ​​visual camera 40 on the splint 16 captures the upper environment in real time and transmits the image data to the controller 41. If an obstacle is detected, the controller 41 immediately turns off the motor 31; if there is no obstacle, the lift continues to the preset height;

[0048] S5 anti-loosening lock: After reaching the target height, turn off the motor three 31, start the one-way hydraulic cylinder 38, the output end of which pushes the extrusion block 39 to squeeze the insert 35, the insert 35 overcomes the return spring 37 elastic force inserted into the lifting column 27 slot 36, the lifting seat 2 and the lifting column 27 rigidly locked;

[0049] S6. Moving and fixing the device: When movement is required, the two-way hydraulic cylinder 24 is activated, and the push block 25 squeezes the inclined surface of the mounting block 20, causing the mounting block 20 to overcome the elastic force of the push-back spring 22 and descend, driving the moving wheel 21 to touch the ground. After pushing the base 1 to the specified position, the mounting screws 26 are passed through the receiving seat 19 and screwed into the ground to complete the fixing of the base 1.

[0050] The components work together to achieve safe and efficient construction by adjusting the length, fixing the steel structure, synchronously lifting, preventing collisions, locking and moving and fixing in sequence, as the orderly steps are adapted to the functions of the device structure.

[0051] Working Principle: When the device is operating, the length is first adjusted. Motor 2 14 is started, and the output shaft of motor 2 14 drives screw 2 15 to rotate. Because extension seat 2 10 is threadedly connected to screw 2 15, and the limit blocks 13 on both sides of extension seat 2 10 slide along the limit slots 12 of extension seat 1 3, extension seat 2 10 will extend horizontally toward the outside of lifting seat 2, while driving the clamping seat 11 at the end to move synchronously. If extension seat 2 10 is fully extended, but clamping seat 11 still does not touch the end of the steel structure, motor 1 8 is started, and the output shaft of motor 1 8 drives gear 9 to rotate. Gear 9 engages with the ring gear 7 on the outer wall of screw 1 6, thereby driving screw 1 6 to rotate. Because a guide block 5 is threadedly sleeved on the outside of screw 1 6 and slidably connected to the guide slot 4 on the inner wall of lifting seat 2, the guide block 5 slides along the guide slot 4, thereby driving extension seat 1 3 to extend from the inside of lifting seat 2 until the clamping seat 11 adapts to the length of the steel structure. Then the steel structure is clamped and fixed, and the steel structure is placed on the top of the lifting seat 2, extension seat 1 3 and extension seat 2 10, and the long neck screws 18 on both sides of the clamping seat 11 are rotated synchronously. One end of the long neck screw 18 is rotatably connected to the splint 16 through a bearing, which will push the splint 16 to move toward the steel structure. At the same time, the slider 17 slides along the inside of the clamping seat 11 to assist in guiding, so that the splint 16 fits tightly against the end of the steel structure to complete the rigid fixation.

[0052] After the fixation is completed, the lifting process is started. Start the motor three 31. The output shaft of the motor three 31 drives the active gear sleeve 32 to rotate. The active gear sleeve 32 drives the driven gear sleeve 30 to rotate through the external meshing transmission chain 33. The driven gear sleeve 30 is welded to the bottom end of the screw 29, which will drive the screw 29 to rotate synchronously; the lifting block 28 is threadedly sleeved on the outside of the screw 29 and slidably connected in the lifting column 27. When the screw 29 rotates, the lifting block 28 will rise vertically along the lifting column 27, thereby driving the lifting seat 2 and the steel structure to rise synchronously. During the lifting process, the AI ​​vision camera 40 on one side of the splint 16 captures the upper environment in real time, and the image data is transmitted to the controller 41 on the side of the lifting column 27. If an obstacle is detected, the controller 41 immediately turns off the motor three 31; if there is no obstacle, it will continue to lift to the preset height. After reaching the target height, the motor 31 is turned off, and the one-way hydraulic cylinder 38 in the anti-slip seat 34 is activated. The output end of the one-way hydraulic cylinder 38 pushes the extrusion block 39, which squeezes the insertion block 35, causing the insertion block 35 to slide against the elastic force of the return spring 37 and insert into the slot 36 of the lifting column 27, rigidly locking the lifting seat 2 and the lifting column 27. When the device needs to be moved, the two-way hydraulic cylinder 24 in the protective seat 23 is activated. The output end of the two-way hydraulic cylinder 24 pushes the push block 25, which squeezes the inclined surface of the mounting block 20 in the storage seat 19. The mounting block 20 overcomes the elastic force of the return spring 22 and descends, driving the bottom moving wheel 21 to touch the ground. After pushing the base 1 to the specified position, the mounting screws 26 are screwed through the storage seat 19 into the ground to complete the fixing of the base 1.

[0053] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A large-span truss roof steel structure assembly and lifting device, comprising a base (1) and a lifting seat (2), characterized in that: The lifting seat (2) is slidably connected to an extension seat (3), the inner wall of the lifting seat (2) is provided with a guide groove (4), and the outer walls of the extension seat (3) on both sides are provided with guide blocks (5) slidably connected to the guide groove (4); a screw rod (6) is rotatably connected to one of the guide grooves (4) through a bearing, a gear ring (7) is welded to the outer wall of the screw rod (6), and a guide block (5) is threadedly sleeved on the outside of the screw rod (6); a motor (8) is fixed to the outer wall of one side of the lifting seat (2) by bolts, and the output shaft of the motor (8) is provided with a gear (9) meshing with the gear ring (7); the extension seat (3) is slidably connected to an extension seat (10), and the outer walls of the extension seat (3) on both sides are provided with limit grooves (12 ), the outer walls of both sides of the extension seat 2 (10) are provided with limit blocks (13) which are slidably connected to the limit groove (12); the outer wall of one side of the extension seat 1 (3) is fixed with the motor 2 (14) by bolts, the output shaft of the motor 2 (14) is provided with the screw rod 2 (15), and the extension seat 2 (10) is threadedly sleeved on the outside of the screw rod 2 (15); one end of the extension seat 2 (10) is provided with a clamping seat (11), the clamping seat (11) is slidably connected with a slider (17), and the top of the slider (17) is provided with a clamping plate (16) which is slidably connected to the top of the clamping seat (11); the outer walls of both sides of the clamping seat (11) are threadedly inserted with long neck screws (18), and one end of the long neck screw (18) is rotatably connected to the outer wall of one side of the clamping plate (16) through a bearing.

2. The large-span truss roof steel structure assembly and lifting device according to claim 1, characterized in that: The outer walls on both sides of the base (1) are provided with a receiving seat (19), a mounting block (20) is slidably connected inside the receiving seat (19), a moving wheel (21) is fixed to the outer wall of the bottom of the mounting block (20) by bolts, and a mounting screw (26) is threadedly inserted into the top of the receiving seat (19).

3. The large-span truss roof steel structure assembly and lifting device according to claim 2, characterized in that: The outer wall of the bottom of the mounting block (20) is provided with a spring groove (42), and the inner wall of the bottom of the receiving seat (19) is provided with a push-back spring (22) connected to the spring groove (42).

4. The large-span truss roof steel structure assembly and lifting device according to claim 3, characterized in that: The base (1) is provided with a protective seat (23) on the outer wall close to the receiving seat (19), and a bidirectional hydraulic cylinder (24) is fixed to the inner wall of the top of the protective seat (23) by bolts. The output end of the bidirectional hydraulic cylinder (24) is provided with a push block (25) inserted into the receiving seat (19) and in contact with the mounting block (20).

5. The large-span truss roof steel structure assembly and lifting device according to claim 1 is characterized in that: A lifting column (27) is welded to the outer wall of the top of the base (1), and a lifting block (28) is provided on the outer wall of one side of the lifting seat (2) and is slidably connected to the lifting column (27).

6. The large-span truss roof steel structure assembly and lifting device according to claim 5, characterized in that: The top outer wall of the base (1) is rotatably connected to a screw rod (29) via a bearing, the lifting block (28) is threadedly sleeved on the outside of the screw rod (29), and a driven gear sleeve (30) is welded to the bottom end of the screw rod (29).

7. The large-span truss roof steel structure assembly and lifting device according to claim 6, characterized in that: The bottom inner wall of the base (1) is fixed with a motor three (31) by bolts, and the output shaft of the motor three (31) is provided with a driving gear sleeve (32), and the driving gear sleeve (32) and the driven gear sleeve (30) are externally meshed and sleeved with a transmission chain (33).

8. The large-span truss roof steel structure assembly and lifting device according to claim 5, characterized in that: The outer wall of one side of the lifting seat (2) is provided with an anti-slip seat (34) that is in contact with the outer wall of the lifting column (27), and an insert block (35) is slidably connected to the anti-slip seat (34). The outer wall of one side of the lifting column (27) is provided with a plurality of slots (36) distributed at equal intervals, and the insert blocks (35) are inserted into the slots (36); the inner wall of the anti-slip seat (34) is provided with a return spring (37) connected to the insert block (35), and the inner wall of the anti-slip seat (34) is fixed with a one-way hydraulic cylinder (38) by bolts, and the output end of the one-way hydraulic cylinder (38) is provided with an extrusion block (39) that contacts the insert block (35).

9. The large-span truss roof steel structure assembly and lifting device according to claim 1, characterized in that: An AI visual camera (40) is fixed to the outer wall of one side of the splint (16) by bolts, and a controller (41) is fixed to the outer wall of one side of one of the lifting columns (27) by bolts; the AI ​​visual camera (40), motor 1 (8), motor 2 (14), motor 3 (31), bidirectional hydraulic cylinder (24) and unidirectional hydraulic cylinder (38) are all electrically connected to the controller (41) through wires.

10. A method for using a large-span truss roof steel structure assembly and lifting device, characterized in that: The following steps are involved: S1. Length adaptation adjustment: First start the motor 2 (14), and its output shaft drives the screw 2 (15) to rotate. Since the extension seat 2 (10) is threadedly connected to the screw 2 (15), and the limit block (13) slides along the limit groove (12) of the extension seat 1 (3), the extension seat 2 (10) will drive the clamping seat (11) to extend horizontally. If the extension seat 2 (10) is fully extended, the clamping seat (11) still does not touch the end of the steel structure. Start the motor 1 (8), and the motor 1 (8) drives the screw 1 (6) to rotate through the engagement of the gear (9) and the gear ring (7), so that the guide block (5) slides along the guide groove (4), driving the extension seat 1 (3) to extend from the lifting seat (2) until the clamping seat (11) adapts to the length of the steel structure; S2. Clamping and fixing of steel structure: Place the steel structure on the top of the lifting seat (2), extension seat 1 (3) and extension seat 2 (10), and rotate the long-necked screws (18) on both sides of the clamping seat (11) synchronously. The screws push the clamping plate (16) to move through the bearings, and the slider (17) slides along the auxiliary guide inside the clamping seat (11) so that the clamping plate (16) fits tightly to the end of the steel structure, completing the rigid fixation; S3. Synchronous lifting drive: Start the motor three (31), whose output shaft drives the active gear sleeve (32) to rotate, and the driven gear sleeve (30) is engaged through the transmission chain (33), driving the screw (29) to rotate; the lifting block (28) is threadedly connected to the screw (29) and slides along the lifting column (27), driving the lifting seat (2) and the steel structure to rise vertically, achieving synchronous lifting on both sides; S4. Anti-collision monitoring: During the lifting process, the AI ​​visual camera (40) on the splint (16) captures the upper environment in real time, and the image data is transmitted to the controller (41). If an obstacle is detected, the controller (41) immediately turns off the motor three (31); if there is no obstacle, the lifting continues to the preset height; S5. Anti-loosening lock: After reaching the target height, turn off the motor three (31), start the one-way hydraulic cylinder (38), and its output end pushes the extrusion block (39) to extrude the plug block (35). The plug block (35) overcomes the elastic force of the return spring (37) and is inserted into the slot (36) of the lifting column (27), thereby rigidly locking the lifting seat (2) and the lifting column (27); S6. Moving and fixing the device: When it is necessary to move, start the two-way hydraulic cylinder (24), and the push block (25) squeezes the inclined surface of the mounting block (20), so that the mounting block (20) overcomes the elastic force of the push-back spring (22) and descends, driving the moving wheel (21) to touch the ground. After pushing the base (1) to the specified position, the mounting screw (26) is passed through the receiving seat (19) and screwed into the ground to complete the fixing of the base (1).

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