Long cantilevered split-level truss construction device and method

Abstract

The present invention discloses a long cantilever leap-layer truss construction device and method, relates to the field of leap-layer steel truss construction, solves the problems of large volume and weight of existing large cantilever long cantilever leap-layer steel truss construction devices during use, inconvenient to use, dangerous manual operation and low efficiency, comprises a base, a lifting mechanism, a fixing mechanism and a positioning mechanism, the base is rotatably connected to a rotating platform, the base is fixedly connected to a fixing pipe, the lifting mechanism comprises a lifting plate, a plurality of lifting rods are provided on the rotating platform, the fixing mechanism comprises a fixing platform, and two groups of clamping blocks are provided on the fixing platform, the large cantilever long cantilever leap-layer steel truss construction device and method, by injecting clean water into the fixing pipe, and starting the lifting plate to move downward to press the clean water under the lifting rod, and lift the lifting rod, and releasing the clean water after use, thereby reducing the weight of the entire device, and automatically opening and closing the clamping blocks for clamping and releasing operations when the fixing platform is raised through the linkage control of the fixing mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of leap-layer steel frame construction, and in particular to a long cantilever leap-layer truss construction device and method. Background Art

[0002] A split-level residence is a two-story apartment with an internal staircase connecting the upper and lower floors. Instead of using a shared staircase, the upper and lower floors are connected by a dedicated staircase, giving them a villa-like feel. The advantages of a split-level residence include ample daylight for each unit, improved ventilation, a compact layout with clear functional areas, and minimal interference. In high-rise buildings, elevator landings are located every two floors, minimizing the shared elevator area and improving space efficiency.

[0003] Some apartments or villas have high floor heights, generally reaching over 4.5 meters. To save space, people often use the method of adding a mezzanine floor in the middle to increase overall space utilization. During construction, existing large-cantilever long-cantilevered mezzanine steel trusses require first fixing the supporting steel frames around the wall with chemical bolts, then placing the steel trusses on top of the supporting steel frames on both sides and fixing them with bolts. After that, steel corrugated board is laid above the steel trusses. After fixing, the floor is laid on the upper side to complete the mezzanine floor. However, since the existing steel trusses are located indoors during construction, traditional lifting devices are difficult to assist in lifting the steel trusses to the set height for construction. This is especially true for large-cantilever long-cantilevered mezzanine steel trusses, which are long and heavy. Traditional manual handling methods are difficult to complete installation, resulting in low construction efficiency and significant safety hazards. To this end, we propose a long-cantilevered mezzanine truss construction device and method. Summary of the Invention

[0004] The object of the present invention is to provide a large cantilever long cantilever leap-level steel frame construction device and method that is convenient for auxiliary installation of steel frame and is light to use, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a long cantilevered leap-story truss construction device and method, comprising a base, a lifting mechanism, a fixing mechanism and a positioning mechanism, wherein the base is rotatably connected to a rotating platform, the base is fixedly connected to a fixing pipe, the inner wall of the rotating platform is rotatably connected to the outer wall of the fixing pipe, the lifting mechanism comprises a lifting plate slidably connected to the inner wall of the fixing pipe in a vertical direction, a plurality of lifting rods are evenly arranged on the rotating platform, the lifting mechanism is used to inject clean water into the fixing pipe when in use, and start the lifting plate to move downward to press the clean water under the lifting rod, thereby lifting the lifting rod. After use, the clean water in the fixed pipe is discharged to reduce the overall weight of the device. The fixing mechanism includes a fixed platform fixedly installed above the lifting rod, and two sets of clamping blocks are provided on the fixed platform. The fixing mechanism is used to automatically push the clamping blocks to both sides when the fixed platform is lowered, and automatically push the clamping blocks toward the middle when the fixed platform moves up to complete the clamping and fixing of both sides of the steel analysis rack. The positioning mechanism is used to assist the base in moving, and at the same time, when the lifting plate moves down, it is linked to realize automatic positioning of the base position to prevent shaking and deviation during construction, facilitate auxiliary installation of the steel analysis rack and be easy to use.

[0006] Preferably, the lifting mechanism also includes a water inlet pipe and a water outlet pipe fixedly mounted on the rotating table, the rotating table is provided with two groups of annular cavities respectively connected to the water inlet pipe and the water outlet pipe, and the rotating table is evenly provided with multiple groups of lifting grooves connected to the annular cavities, the lifting tubes are slidably connected in the lifting grooves along the vertical direction, the lifting rods are slidably connected to the inner wall of the lifting tubes along the vertical direction, the bottom ends of the lifting tubes are connected to the lifting grooves, a connecting hole connected to the annular cavity is provided on the fixed tube, a rotating part for driving the rotating table to rotate is provided on the base, and a lifting part for driving the lifting plate to lift is provided in the fixed tube, which is convenient for driving the steel analysis rack to lift and reduce the overall weight of the device when not in use.

[0007] Preferably, the lifting member includes a fixed block fixedly mounted on the upper end of the fixed tube, a first motor is fixedly connected to the fixed block, an output end of the first motor is coaxially fixedly connected to a first gear rotatably connected to the bottom surface of the fixed block, and a driving member is provided in the fixed block for linking the lifting plate to be lifted and lowered when the first gear rotates, so as to facilitate driving the lifting plate to be lifted and lowered.

[0008] Preferably, the driving member includes multiple groups of second gears rotatably connected to the bottom surface of the fixed block, the second gear is meshed with the first gear, and the lifting plate is rotatably connected to multiple groups of threaded rods, the threaded rods pass through the fixed block and are threadedly connected to the fixed block, a driving groove is provided on the threaded rod, and the second gear is fixedly connected to a driving block that is slidably connected to the driving groove along the vertical direction, and the threaded rod passes through the second gear, so that the lifting plate is lifted and lowered in conjunction with the rotation of the first gear. The lifting plate is lifted and lowered by the rotation of the threaded rod driven by the first motor in order to avoid the low direct thrust generated by the traditional electric telescopic rod. The first motor is connected to the reducer for deceleration and then transmitted to the first gear, thereby increasing the torque, so that the threaded rod can slowly rotate to increase the driving force when the lifting plate is lifted and lowered.

[0009] Preferably, the fixing mechanism also includes a limit block fixedly mounted on the clamping block, the clamping block being slidably connected to the upper end of the fixed platform in the horizontal direction, and the end of the clamping block away from the limit block is fixedly connected to a first spring fixedly connected to the fixed platform, and the rotating platform is provided with a releasing member for automatically driving the clamping block to release the clamping when the fixed platform moves downward, and the rotating platform is provided with a control member for releasing the limiting state of the clamping block after the fixed platform moves to a set position to place the steel analysis rack, so as to facilitate automatic fixing, clamping and releasing of the steel analysis rack.

[0010] Preferably, the releasing member includes a plug-in block fixedly mounted on the upper end of the rotating table, and the bottom surface of the clamping block is provided with an oblique groove that can be slidably connected to the inclined position of the top end of the plug-in block. The plug-in block passes through the fixed table and is slidably connected to the fixed table in the vertical direction, so as to automatically drive the clamping block to release the clamping when the fixed table moves downward.

[0011] Preferably, the control component includes a pull rope fixedly mounted on one end of the clamping block, a fixed shaft is fixedly connected to the rotating table, a clockwork spring is fixedly connected to the outer wall of the fixed shaft, a winding disk is rotatably connected to the rotating table, the outer side of the clockwork spring is fixedly connected to the inner wall of the winding disk, and the end of the pull rope away from the clamping block is fixedly connected to the outer wall of the winding disk, so as to facilitate releasing the limiting state of the clamping block after moving to the set position on the fixed table and placing the steel analysis rack.

[0012] Preferably, the positioning mechanism includes multiple groups of rollers fixedly mounted on the bottom surface of the base, a positioning column is slidably connected in the vertical direction in the fixed tube, an anti-slip pad is fixedly connected to the bottom surface of the positioning column, the upper end of the positioning column is fixedly connected to a first tension spring fixedly connected to the bottom surface of the lifting plate, a guide groove is provided on the inner wall of the fixed tube and slidably connected to the positioning column in the vertical direction, and a connecting tube for connecting the fixed tube and the annular cavity on the lower side is provided in the positioning column, so as to automatically limit the base during construction to avoid shaking.

[0013] Preferably, the rotating member includes a second motor fixedly mounted on the base, the output end of the second motor is coaxially fixedly connected to a third gear, and the outer wall of the rotating table is fixedly connected to an outer gear ring meshing with the third gear, so as to drive the rotating table to rotate.

[0014] A construction method for a long cantilevered split-level truss construction device comprises the following steps:

[0015] S1 Preparation: Move the base to the middle position of the indoor steel analysis rack to be installed, lift the steel analysis rack to be installed above the fixing table of the fixing mechanism, place it between the two sets of the clamping block, and inject sufficient water into the fixed pipe;

[0016] S2. Construction: Activate the lifting mechanism to push the lifting plate downward, squeezing the water in the fixed pipe under the lifting rod. The lifting rod is hydraulically driven to lift the fixed platform, thereby lifting the steel shelf. During this process, the clamping blocks automatically clamp the two sides of the steel shelf, while driving the positioning mechanism to maintain the stability of the base.

[0017] S3. Completion: Move the steel analysis frame to the set position and place it on the supporting steel frames that have been fixed at both ends. Release the fixing mechanism and lower the fixed platform through the lifting mechanism to complete the construction. At the same time, release the limit of the positioning mechanism, and the base can be moved freely. Drain the clean water in the fixed pipe to reduce the overall weight of the device when it is moved.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] When the lifting plate moves downward, it will first push the first tension spring and the positioning column to move downward together until the anti-slip pad contacts the ground, thereby achieving a tight limit between the first and second clamping blocks and preventing the rollers from continuing to roll during the lifting process.

[0020] 2. The present invention provides a long cantilevered leap-story truss construction device and method. The lifting rod and the lifting tube are connected to each other, so that the lifting distance is greatly increased while it is easy to retract and reduce the overall height of the device. By starting the second motor to drive the third gear to rotate, the outer gear ring and the rotating table can be driven to rotate together, and the angle of the upper steel frame is adjusted so that the steel frame is placed above the supporting steel frames at both ends and aligned. After use, the positioning column moves upward to connect the connecting pipe with the annular cavity on the lower side. At this time, the water outlet pipe is opened to complete the discharge. Since the overall drive of the device requires a lot of water, the traditional hydraulic push device has a large weight due to the storage of a large amount of hydraulic oil. The device is hydraulically driven by storing clean water, which greatly reduces the overall weight of the device after discharge, making it easy to move and transport.

[0021] 3. The present invention provides a long cantilevered leap-story truss construction device and method. When the fixed platform moves up, the top inclined surface of the plug-in block and the inclined slot gradually release the interference, so that under the push of the first spring, the clamping blocks on both sides gradually approach the middle, completing the limit and preventing loosening during the rising process. When the steel frame is placed in the set position, the pull ropes on both sides can be pulled to make the clamping blocks slide to both sides, releasing the fixation of the steel frame. Thereafter, the first motor is started to drive the first gear to rotate in the opposite direction, the lifting plate moves up, and the water in the lifting slot is pumped into the fixed pipe, which can make the fixed platform move down. Thereafter, the pull rope is released, and the pull rope is automatically wound onto the winding disk under the drive of the clockwork spring until the plug-in block is inserted into the inclined slot again, which can push the clamping blocks to automatically open to both sides, facilitating the next fixing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the present invention in construction status;

[0023] Figure 2 for Figure 1 Enlarged view of area A in the middle;

[0024] Figure 3 This is a schematic diagram of the bottom structure of the present invention;

[0025] Figure 4 This is a structural diagram of the fixing mechanism of the present invention;

[0026] Figure 5 for Figure 4 Enlarged view of area B in the middle;

[0027] Figure 6 Schematic diagram of the internal structure of the present invention;

[0028] Figure 7 This is a structural diagram of the fixing mechanism of the present invention;

[0029] Figure 8 for Figure 7 Enlarged view of area C in the middle;

[0030] Figure 9 This is a schematic diagram of the positioning mechanism structure of the present invention;

[0031] Figure 10 for Figure 9 Enlarged view of area D in the middle.

[0032] In the figure: 1-base; 2-rotating table; 3-fixed pipe; 4-lifting mechanism; 5-lifting plate; 6-lifting rod; 7-fixing mechanism; 8-fixing table; 9-clamping block; 10-positioning mechanism; 11-water inlet pipe; 12-water outlet pipe; 13-annular cavity; 14-lifting groove; 15-lifting pipe; 16-connecting hole; 17-rotating member; 18-lifting member; 19-fixed block; 20-first motor; 21-first gear; 22-driving member; 23-second gear Wheel; 24-threaded rod; 25-drive groove; 26-drive block; 27-limit block; 28-first spring; 29-release member; 30-control member; 31-plug-in block; 32-bevel groove; 33-pull rope; 34-fixed shaft; 35-spring spring; 36-winding disk; 37-roller; 38-positioning column; 39-anti-slip pad; 40-first tension spring; 41-guide groove; 42-connecting pipe; 43-second motor; 44-third gear; 45-outer gear ring. DETAILED DESCRIPTION

[0033] 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 creative efforts are within the scope of protection of the present invention.

[0034] See also Figures 1-10The present invention provides a technical solution: a long cantilevered leap-story truss construction device and method, including a base 1, a lifting mechanism 4, a fixing mechanism 7 and a positioning mechanism 10, the base 1 is rotatably connected to a rotating platform 2, the base 1 is fixedly connected to a fixing pipe 3, the inner wall of the rotating platform 2 is rotatably connected to the outer wall of the fixing pipe 3, the lifting mechanism 4 includes a lifting plate 5 that is slidably connected to the inner wall of the fixing pipe 3 in a vertical direction, and a plurality of lifting rods 6 are evenly arranged on the rotating platform 2. The lifting mechanism 4 is used to inject clean water into the fixing pipe 3 when in use, and start the lifting plate 5 to move downward to press the clean water into the bottom of the lifting rod 6, thereby Lift the lifting rod 6 and drain the clean water in the fixed pipe 3 after use to reduce the overall weight of the device. The fixing mechanism 7 includes a fixing platform 8 fixedly installed above the lifting rod 6. Two groups of clamping blocks 9 are provided on the fixing platform 8. The fixing mechanism 7 is used to automatically push the clamping blocks 9 to both sides when the fixing platform 8 is lowered, and automatically push the clamping blocks 9 to the middle when the fixing platform 8 moves up to complete the clamping and fixing of both sides of the steel analysis rack. The positioning mechanism 10 is used to assist the base 1 in moving, and at the same time, when the lifting plate 5 moves down, it is linked to realize automatic positioning of the position of the base 1 to prevent shaking and deviation during construction.

[0035] The lifting mechanism 4 also includes a water inlet pipe 11 and a water outlet pipe 12 fixedly mounted on the rotating table 2. Two groups of annular cavities 13 are provided on the rotating table 2, which are respectively connected to the water inlet pipe 11 and the water outlet pipe 12. A plurality of lifting grooves 14 connected to the annular cavity 13 are evenly provided on the rotating table 2. A lifting pipe 15 is slidably connected in the lifting groove 14 along the vertical direction. The lifting rod 6 is slidably connected to the inner wall of the lifting pipe 15 along the vertical direction. The bottom end of the lifting pipe 15 is connected to the lifting groove 14. A connecting hole 16 connected to the annular cavity 13 is provided on the fixed pipe 3. A rotating member 17 for driving the rotating table 2 to rotate is provided on the base 1. A lifting member 18 for driving the lifting plate 5 to lift and lower is provided in the fixed pipe 3.

[0036] The lifting member 18 includes a fixed block 19 fixedly mounted on the upper end of the fixed tube 3, and a first motor 20 is fixedly connected to the fixed block 19. The model of the first motor 20 is preferably YYHS-40. The output end of the first motor 20 is coaxially fixedly connected to a first gear 21 that is rotatably connected to the bottom surface of the fixed block 19. A driving member 22 is provided in the fixed block 19 for linking the lifting plate 5 to lift and lower when the first gear 21 rotates. The rotating member 17 includes a second motor 43 fixedly mounted on the base 1. The model of the second motor 43 is preferably YYHS-40. The output end of the second motor 43 is coaxially fixedly connected to a third gear 44, and the outer wall of the rotating table 2 is fixedly connected to an outer gear ring 45 that meshes with the third gear 44.

[0037] The driving member 22 includes multiple groups of second gears 23 rotatably connected to the bottom surface of the fixed block 19. The second gears 23 are engaged with the first gear 21. The lifting plate 5 is rotatably connected to multiple groups of threaded rods 24. The threaded rods 24 pass through the fixed block 19 and are threadedly connected to the fixed block 19. A driving groove 25 is provided on the threaded rod 24. A driving block 26 is fixedly connected to the second gear 23 and is slidably connected to the driving groove 25 in a vertical direction. The threaded rod 24 passes through the second gear 23.

[0038] The fixing mechanism 7 also includes a limit block 27 fixedly mounted on the clamping block 9. The clamping block 9 is slidably connected to the upper end of the fixed platform 8 in the horizontal direction. The end of the clamping block 9 away from the limit block 27 is fixedly connected to a first spring 28 fixedly connected to the fixed platform 8. The rotating platform 2 is provided with a releasing member 29 for automatically driving the clamping block 9 to release the clamping when the fixed platform 8 moves downward. The rotating platform 2 is provided with a control member 30 for releasing the limiting state of the clamping block 9 after moving to a set position on the fixed platform 8 to place the steel analysis rack.

[0039] The release member 29 includes a plug-in block 31 fixedly mounted on the upper end of the rotating table 2, and the bottom surface of the clamping block 9 is provided with an oblique groove 32 which can be slidably connected to the inclined position of the top end of the plug-in block 31. The plug-in block 31 passes through the fixed table 8 and is slidably connected to the fixed table 8 along the vertical direction. The control member 30 includes a pull rope 33 fixedly mounted on one end of the clamping block 9, a fixed shaft 34 is fixedly connected to the rotating table 2, and a clockwork spring 35 is fixedly connected to the outer wall of the fixed shaft 34. A winding disk 36 is rotatably connected to the rotating table 2, and the outer side of the clockwork spring 35 is fixedly connected to the inner wall of the winding disk 36. The end of the pull rope 33 away from the clamping block 9 is fixedly connected to the outer wall of the winding disk 36.

[0040] The positioning mechanism 10 includes multiple groups of rollers 37 fixedly mounted on the bottom surface of the base 1, a positioning column 38 is slidably connected in the vertical direction in the fixed tube 3, an anti-slip pad 39 is fixedly connected to the bottom surface of the positioning column 38, the upper end of the positioning column 38 is fixedly connected to a first tension spring 40 fixedly connected to the bottom surface of the lifting plate 5, a guide groove 41 is provided on the inner wall of the fixed tube 3 and is slidably connected to the positioning column 38 in the vertical direction, and a connecting pipe 42 for connecting the fixed tube 3 and the lower annular cavity 13 is provided in the positioning column 38.

[0041] A construction method for a long cantilevered split-level truss construction device comprises the following steps:

[0042] S1 Preparation: Move the base 1 to the middle position of the indoor steel analysis rack to be installed, lift the steel analysis rack to be installed above the fixing mechanism 7 of the fixing table 8, place it between the two sets of clamping blocks 9, and inject sufficient water into the fixed tube 3;

[0043] S2. Construction: Start the lifting mechanism 4 to push the lifting plate 5 downward, thereby squeezing the water in the fixed pipe 3 to the bottom of the lifting rod 6. The lifting rod 6 is hydraulically driven to lift the fixed platform 8, thereby lifting the steel analysis frame. During the pushing process, the linkage clamping block 9 automatically clamps the two sides of the steel analysis frame, while driving the positioning mechanism 10 to maintain the stability of the base 1;

[0044] S3. Completion: Move the steel analysis frame to the set position and place it on the supporting steel frame that has been fixed at both ends. Release the fixing mechanism 7 and lower the fixed platform 8 through the lifting mechanism 4 to complete the construction. At the same time, release the limit of the positioning mechanism 10, and the base 1 can be moved arbitrarily. Drain the clean water in the fixed pipe 3 to reduce the overall weight of the device when it is moved.

[0045] The base 1 is moved to the middle position of the room where the steel analysis rack needs to be installed by rolling the roller 37, and the steel analysis rack to be installed is lifted above the fixed platform 8 and placed between the two sets of clamping blocks 9. The water inlet pipe 11 is opened to inject sufficient clean water into the annular cavity 13 and the fixed pipe 3. After closing the water inlet pipe 11, the first motor 20 is started to drive the first gear 21 to rotate, thereby rotating the second gear 23. The second gear 23 drives the driving slot 25 through the driving block 26 to rotate the threaded rod 24, and the threaded rod 2 The lifting plate 5 rotates and moves downward in the fixed block 19, thereby pushing the lifting plate 5 downward. The clean water inside enters the lifting groove 14 through the annular cavity 13, thereby pushing the lifting tube 15 and the bottom surface of the lifting rod 6 upward, so that the fixed platform 8 moves upward to lift the steel analysis rack to be installed to the required height. When the lifting plate 5 moves downward, it will first push the first tension spring 40 and the positioning column 38 to move downward together until the anti-slip pad 39 contacts the ground, achieving a tight limit between the ground and preventing the roller 37 from continuing to roll during the lifting process.

[0046] When the lifting rod 6 and the lifting tube 15 are connected, the lifting distance is greatly increased while facilitating the contraction and lowering the height of the device as a whole. By starting the second motor 43 to drive the third gear 44 to rotate, the outer gear ring 45 and the rotating platform 2 can be driven to rotate together, and the angle of the upper steel frame can be adjusted so that the steel frame can be placed above the supporting steel frames at both ends and aligned. After use, the positioning column 38 moves up so that the connecting pipe 42 is connected to the annular cavity 13 on the lower side. At this time, the water outlet pipe 12 is opened to discharge the clean water in the fixed pipe 3 through the connecting pipe 42 and the annular cavity 13 below to the water outlet pipe 12, completing the discharge. Since the water required for the overall drive of the device is large, the traditional hydraulic pushing device is heavy due to the storage of a large amount of hydraulic oil. The device is hydraulically driven by storing clean water, which greatly reduces the weight of the entire device after discharge, making it easy to move and transport.

[0047] When the fixed platform 8 moves upward, the top inclined surface of the plug-in block 31 and the inclined groove 32 gradually release the interference, so that under the push of the first spring 28, the clamping blocks 9 on both sides gradually move closer to the middle, and the upper ends of the two sides of the steel analysis frame are clamped by the limit blocks 27 to complete the limit and prevent loosening during the rising process. At the same time, the pull rope 33 will gradually loosen from the winding disk 36, the clockwork spring 35 is compressed, and the pull rope 33 is always in a taut state. When the steel analysis frame is placed in the set position, the pull ropes 33 on both sides are pulled The clamping blocks 9 can be made to slide to both sides, releasing the fixation of the steel analysis rack. Thereafter, the first motor 20 is started to drive the first gear 21 to rotate in the opposite direction, the lifting plate 5 moves up, and the water in the lifting groove 14 is pumped into the fixing pipe 3, which can make the fixing platform 8 move down. Thereafter, the pull rope 33 is released, and the pull rope 33 is automatically wound onto the winding disk 36 under the drive of the clockwork spring 35, until the plug-in block 31 is inserted into the inclined groove 32 again, which can push the clamping blocks 9 to automatically open to both sides, facilitating the next fixing operation.

[0048] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A long cantilevered leap-story truss construction device, characterized in that: include: A base, a rotating platform is rotatably connected to the base, a fixed tube is fixedly connected to the base, and an inner wall of the rotating platform is rotatably connected to an outer wall of the fixed tube; Also includes: The lifting mechanism includes a lifting plate that is slidably connected to the inner wall of the fixed pipe in the vertical direction. A plurality of lifting rods are evenly arranged on the rotating platform. The lifting mechanism is used to inject clean water into the fixed pipe and start the lifting plate to move downward to press the clean water under the lifting rod, thereby lifting the lifting rod. After use, the clean water in the fixed pipe is released; The fixing mechanism includes a fixing platform fixedly installed above the lifting rod. The fixing platform is provided with two sets of clamping blocks. The fixing mechanism is used to automatically push the clamping blocks to both sides when the fixing platform is lowered, and automatically push the clamping blocks to the middle when the fixing platform is moved up, thereby completing the clamping and fixing of both sides of the steel truss; The positioning mechanism is used to assist the base in moving, and at the same time, the linkage realizes automatic positioning of the base position when the lifting plate moves down to prevent shaking and offset during construction. The lifting mechanism also includes a water inlet pipe and a water outlet pipe fixedly mounted on the rotating table. The rotating table is provided with two groups of annular cavities respectively connected to the water inlet pipe and the water outlet pipe. The rotating table is evenly provided with multiple groups of lifting grooves connected to the annular cavities. The lifting groove is connected with a lifting pipe in a vertical sliding direction. The lifting rod is connected to the inner wall of the lifting pipe in a vertical sliding direction. The bottom end of the lifting pipe is connected to the lifting groove. A connecting hole connected to the annular cavity is provided on the fixed pipe. The base is provided with a The rotating part of the rotating table rotates, and a lifting part is provided in the fixed tube. The lifting part includes a fixed block fixedly installed on the upper end of the fixed tube, a first motor is fixedly connected in the fixed block, and the output end of the first motor is coaxially fixedly connected to a first gear rotatably connected to the bottom surface of the fixed block. A driving part is provided in the fixed block, and the driving part includes multiple groups of second gears rotatably connected to the bottom surface of the fixed block. The second gear is meshed with the first gear. Multiple groups of threaded rods are rotatably connected to the lifting plate, the threaded rods pass through the fixed block and are threadedly connected to the fixed block. A driving groove is opened on the threaded rod, and the second gear is fixedly connected to a driving block that is slidably connected to the driving groove in a vertical direction, and the threaded rod passes through the second gear.

2. A long cantilevered leap-story truss construction device according to claim 1, characterized in that: The fixing mechanism also includes a limit block fixedly mounted on the clamping block, the clamping block is slidably connected to the upper end of the fixed platform in the horizontal direction, the end of the clamping block away from the limit block is fixedly connected to a first spring fixedly connected to the fixed platform, the rotating platform is provided with a releasing member for automatically driving the clamping block to release the clamping when the fixed platform moves downward, and the rotating platform is provided with a control member for releasing the limiting state of the clamping block after moving to a set position on the fixed platform to place the steel truss.

3. The long cantilevered split-level truss construction device according to claim 2, characterized in that: The release member includes a plug-in block fixedly mounted on the upper end of the rotating table. The bottom surface of the clamping block is provided with an oblique groove that can be slidably connected to the inclined position of the top of the plug-in block. The plug-in block passes through the fixed table and is slidably connected to the fixed table along the vertical direction.

4. The long cantilevered split-level truss construction device according to claim 3, characterized in that: The control part includes a pull rope fixedly installed on one end of the clamping block, a fixed shaft is fixedly connected to the rotating table, the outer wall of the fixed shaft is fixedly connected to the spring, a winding disk is rotatably connected to the rotating table, the outer side of the spring is fixedly connected to the inner wall of the winding disk, and the end of the pull rope away from the clamping block is fixedly connected to the outer wall of the winding disk.

5. The long cantilevered split-level truss construction device according to claim 1, characterized in that: The positioning mechanism includes multiple groups of rollers fixedly mounted on the bottom surface of the base, a positioning column is connected to the fixed tube in a vertical sliding direction, an anti-slip pad is fixedly connected to the bottom surface of the positioning column, the upper end of the positioning column is fixedly connected to a first tension spring fixedly connected to the bottom surface of the lifting plate, a guide groove is provided on the inner wall of the fixed tube and is connected to the positioning column in a vertical sliding direction, and a connecting tube is provided in the positioning column for connecting the fixed tube and the lower annular cavity.

6. The long cantilevered split-level truss construction device according to claim 1, characterized in that: The rotating member includes a second motor fixedly mounted on the base, the output end of the second motor is coaxially fixedly connected to the third gear, and the outer wall of the rotating platform is fixedly connected to an outer gear ring meshing with the third gear.

7. A construction method for a long cantilevered split-level truss according to any one of claims 1 to 6, characterized in that: The following steps are involved: S1. Preparation: Move the base to the center of the room where the steel truss will be installed. Lift the steel truss to the top of the fixing platform of the fixing mechanism, place it between the two sets of clamping blocks, and inject sufficient water into the fixing pipe. S2. Construction: Activate the lifting mechanism to push the lifting plate downward, squeezing the clean water in the fixed pipe to the bottom of the lifting rod. The lifting rod is hydraulically driven to lift the fixed platform, thus lifting the steel truss. During this process, the linkage clamping blocks automatically clamp the two sides of the steel truss, while driving the positioning mechanism to maintain the stability of the base. S3. Completion: Move the steel truss to the set position and place it on the supporting steel frames that have been fixed at both ends. Release the fixing mechanism and lower the fixing platform through the lifting mechanism to complete the construction. At the same time, release the limit of the positioning mechanism and the base can be moved freely. Drain the clean water in the fixed pipe to reduce the overall weight of the device when it is moved.

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