High-altitude cantilever steel structure support and mounting method thereof

Abstract

The invention relates to the technical field of steel structure supports, and discloses a high-altitude cantilever steel structure support and a mounting method thereof.The high-altitude cantilever steel structure support comprises a first supporting plate, a connecting plate is arranged on the upper side of the first supporting plate, a second supporting plate is rotationally connected to one side of the outer wall of the connecting plate, and a supporting mechanism is mounted on the outer wall of the first supporting plate; a quick release mechanism is mounted in the connecting plate, and a mounting mechanism is mounted in the first supporting plate; the supporting mechanism comprises a first fixing plate, and one side of the outer wall of the first fixing plate is fixedly connected to one side of the outer wall of the first supporting plate. The mounting mechanism drives the clamping arms to be linked through the adjusting bolts, so that quick, adjustable and firm connection with the building main body is realized. The design solves the technical problems that a traditional installation mode depends on the precision of embedded parts, and high-altitude operation is tedious and dangerous. Operation is easy and convenient, clamping and locking can be completed only by rotating the bolt, the installation efficiency, safety and reliability are greatly improved, and the construction period is effectively shortened.

Description

Technical Field

[0001] This invention relates to the field of steel structure support technology, and in particular to a high-altitude cantilever steel structure support and its installation method. Background Technology

[0002] During the construction of high-rise and super high-rise buildings, temporary platforms or load-bearing structures are often cantilevered outwards from the main building structure for facade work (such as curtain wall installation, exterior wall decoration, painting, etc.) or as temporary platforms for material storage and formwork support. These high-altitude cantilevered steel structures are critical temporary facilities during the construction phase; their stability and the reliability of their connection to the main building directly affect the safety of workers at height and the smooth progress of the project. Therefore, developing a high-altitude cantilevered steel structure support device that is easy to install, reliably connected, and highly safe is of significant practical importance for ensuring construction safety and improving work efficiency.

[0003] Currently, there are two main types of mechanical structures and technical principles used to fix such high-altitude cantilever support devices. The first is the embedded part connection method, where embedded parts such as steel plates or bolt sleeves with anchoring steel bars are pre-placed in the formwork according to the design drawings before the main building structure (such as shear walls or floor slabs) is poured with concrete. After the concrete solidifies, the embedded parts become integrated with the main structure. During subsequent installation, the connecting ends of the cantilever support device are connected to these exposed embedded parts through high-altitude welding or the use of high-strength bolts. The second is the post-installed anchor bolt or through-wall tie rod connection method, where, after the main structure has been formed, holes are drilled in the wall or floor slab using a heavy-duty electric drill, and then chemical anchor bolts, mechanical anchor bolts, or long through-wall tie rods are implanted, with large pads installed on the inner side of the wall to fix the cantilever support device.

[0004] However, the aforementioned existing installation technologies have significant drawbacks in practical applications, particularly in terms of ease of installation and reliability. Traditional installation methods require extremely high precision in the embedding of pre-embedded parts. However, in the complex construction environment on site, the position and orientation of the pre-embedded parts are easily shifted during concrete pouring, leading to misalignment of holes during later installation. This necessitates extensive cutting, hole enlargement, or welding work, which is not only time-consuming and labor-intensive but also severely impacts the strength and reliability of the connection. For post-installed anchors or high-altitude welding, the process itself is extremely cumbersome and dangerous. High-altitude drilling and welding are not only labor-intensive and require highly skilled personnel but are also greatly affected by weather conditions, posing significant safety hazards such as fire, electric shock, and falling tools. The entire installation process requires multiple people to work together, repeated alignment, and tightening of numerous bolts, resulting in low installation efficiency, severely restricting construction progress, and making it difficult to ensure that the installation quality of each connection point meets standards, thus creating potential structural safety risks. Summary of the Invention

[0005] The purpose of this invention is to provide a high-altitude cantilever steel structure support and its installation method, which solves the significant drawbacks of existing installation technologies. Traditional pre-embedded parts are prone to displacement during construction, leading to difficulties in later alignment, tedious rework, and affecting connection strength. Methods such as high-altitude welding or post-installed anchors are not only complex and labor-intensive, but also require highly skilled operators and pose significant safety risks.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A high-altitude cantilever steel structure support device includes a support plate one, a connecting plate provided on the upper side of the support plate one, a support plate two rotatably connected to one side of the outer wall of the connecting plate, a support mechanism installed on the outer wall of the support plate one, a quick-release mechanism installed inside the connecting plate, and an installation mechanism installed inside the support plate one. The support mechanism includes a fixed plate, one side of which is fixedly connected to the outer wall of a support plate. A limit rod is fixedly connected to the upper surface of the fixed plate. A hinge seat is slidably connected to the outer wall of the limit rod. A support rod is rotatably connected inside the hinge seat. A mounting seat is rotatably connected to one side of the outer wall of the support rod. The mounting seat is threadedly connected to the inside of the support plate by mounting bolts. A symmetrical mounting plate is fixedly connected to the outer wall of the hinge seat. A buffer assembly is installed on one side of the outer wall of the support plate, and a counter-bracing assembly is installed on the other side of the outer wall of the mounting plate.

[0007] Preferably, the buffer assembly includes a second fixing plate, one side of the outer wall of the second fixing plate is fixedly connected to the outer wall of the first support plate near the first fixing plate, a sleeve is fixedly connected to the upper surface of the second fixing plate, a spring damper is provided on the inner wall of the sleeve, and a second limiting rod is fixedly connected to the lower surface of the mounting plate, the second limiting rod is located directly above the spring damper.

[0008] Preferably, the counter-support assembly includes a rack, one side of the outer wall of the rack is fixedly connected to one side of the outer wall of the mounting plate, a slider is slidably connected inside the support plate, a rotating shaft is rotatably connected inside the slider, a gear is fixedly connected to the outer wall of the rotating shaft, the gear meshes with the tooth end of the rack, a counter-support rod is fixedly connected to the outer wall of the rotating shaft near the gear, a support block is rotatably connected to the outer wall of the counter-support rod, and an adjustment assembly is installed inside the fixing plate.

[0009] Preferably, the adjusting assembly includes an adjusting screw, the outer wall of which is threadedly connected to the inside of a fixed plate, and the upper end of the adjusting screw is rotatably connected to the lower surface of the slider.

[0010] Preferably, the quick-release mechanism includes a locking block, the outer wall of which is slidably connected to the inside of the connecting plate, the outer wall of which penetrates the connecting plate and is slidably connected to the inside of the support plate, a return spring is provided on the side near the locking block, and a connecting block is fixedly connected to the upper surface of the locking block.

[0011] Preferably, the installation mechanism includes an adjusting bolt, the outer wall of which is rotatably connected to the inside of a support plate, a fixing box rotatably connected to the outer wall of the adjusting bolt, an abutment block fixedly connected to one end of the adjusting bolt, symmetrical clamping arms slidably connected inside the fixing box, a connecting frame provided between the two clamping arms, an installation frame fixedly connected to the outer wall of the connecting frame, positioning posts fixedly connected to the side of each clamping arm near the connecting frame, and a drive assembly installed on the outer wall of the adjusting bolt.

[0012] Preferably, the drive assembly includes a trapezoidal block, the trapezoidal block being internally threaded to the outer wall of the adjusting bolt, a limit block being fixedly connected to the outer wall of the trapezoidal block, and the outer wall of the limit block being slidably connected to the inner wall of the clamping arm.

[0013] Preferably, the connecting frame has multiple limiting holes inside, and the outer wall of the positioning column is slidably connected to the inner wall of one of the limiting holes.

[0014] Preferably, one end of the reset spring abuts against one side of the outer wall of the locking block, and the other end of the reset spring abuts against the inner wall of the connecting plate.

[0015] This invention also provides a method for supporting and installing a high-altitude cantilevered steel structure, comprising the following steps: S1: Base fixing: The mounting frame of the installation mechanism is fixed to the predetermined position of the building structure with bolts, serving as the installation reference for the entire device; S2: Main body installation and locking. Align the mounting mechanism on the support plate with the fixed connecting frame, so that the clamping arm covers the outside of the connecting frame. Then rotate the adjusting bolt to drive the trapezoidal block and the limiting block to move, so that the clamping arm is tightened and the positioning pin on it is inserted into the limiting hole of the connecting frame, thus completing the firm connection between the support plate and the building. S3: Quick assembly of the cantilever plate: Insert the connecting plate connected to the second support plate into the corresponding slot of the first support plate, and use the spring of the quick release mechanism to push the locking block to automatically lock into the internal slot of the first support plate, so as to realize the quick installation of the second support plate. S4: Main support rod connection, align the support rod in the support mechanism with the lower surface of the second support plate through its mounting seat, and tighten it with mounting bolts to form the main triangular support structure; S5: Reverse support adjustment. Rotate the adjusting screw of the reverse support component to move the slider. The slider drives the gear and rack to rotate through the rotating shaft, thereby driving the reverse support rod to rise until the support block at its top is in close contact with the lower side of the support plate 2, providing precise reverse support force, and adjusting its support force according to the actual cantilever requirements.

[0016] This invention provides a high-altitude cantilevered steel structure support and its installation method. It has the following beneficial effects: 1. This invention, through an installation mechanism located inside the support plate, utilizes the precise linkage of its adjusting bolts, trapezoidal blocks, clamping arms, and positioning columns to achieve a rapid, adjustable, and extremely secure connection between the support device and the building structure. This solves the technical problems of traditional cantilever support devices, which rely heavily on the accuracy of embedded parts during installation, or require complex high-altitude welding and the tightening of numerous high-strength bolts, resulting in cumbersome installation processes, difficult alignment, long installation times, and high-risk high-altitude operations. This invention significantly improves the efficiency, safety, and reliability of the installation operation. During operation, simply wrap the clamping arm around the connecting frame fixed to the building, and then rotate the adjusting bolt to drive the clamping arm to automatically tighten and lock the positioning column into the limiting hole. This reduces the skill requirements for operators and shortens the foundation installation period.

[0017] 2. The quick-release mechanism inside the connecting plate of this invention, in conjunction with the support plate one, enables tool-free quick insertion and automatic locking of the support plate two. This solves the problem that in existing cantilever structures, components are often connected using flanges or multiple sets of bolts during assembly, requiring workers at height to carry various tools and repeatedly perform tedious hole-aligning and tightening operations. This not only results in high labor intensity and low assembly efficiency but also poses a safety hazard of tools or parts falling from heights. This invention improves the efficiency and inherent safety level of high-altitude assembly. During installation, simply insert the connecting plate into the corresponding slot of the support plate one. The locking block in the quick-release mechanism will automatically engage with the internal slot of the support plate one under the preload of the return spring, thus simplifying the workflow for high-altitude operations.

[0018] 3. This invention, through the coordinated operation of the support mechanism, counter-bracing component, and buffer component, particularly utilizing a mechanical self-feedback system composed of racks and gears, achieves a three-in-one composite support effect for cantilever structures: initial precise pre-tensioning, dynamic adaptive enhancement during the process, and impact vibration buffering. It solves the core technical problem that traditional rigid support rods can only provide fixed support force and cannot adaptively adjust according to changes in the load at the cantilever end, leading to large deflection deformation or even instability under live loads, and failing to effectively absorb vibrations from wind loads or construction impacts, thus affecting structural safety and the stability of the construction platform. This invention significantly improves the load-bearing capacity, stability, and safety of cantilever structures under complex working conditions. When the cantilever end sinks, the mechanism automatically converts the downward displacement into an upward counter-bracing force, forming dynamic compensation; simultaneously, the adjusting screw can easily set the initial pre-tensioning force, while the spring damper effectively dissipates impact energy. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the two-part structure of the limiting rod of the present invention; Figure 3 This is a schematic diagram of the two-part structure of the support plate of the present invention; Figure 4 This is a schematic diagram of the support rod structure of the present invention; Figure 5 This is a schematic diagram of the connecting frame structure of the present invention; Figure 6 This is a schematic diagram of the structure of the contact block portion of the present invention; Figure 7 This is a schematic diagram of the positioning column part of the present invention; Figure 8 for Figure 3 Enlarged view of point A in the image.

[0020] Legend: 1. Support plate one; 2. Connecting plate; 3. Support plate two; 4. Fixing plate one; 5. Limiting rod one; 6. Hinge seat one; 7. Support rod; 8. Mounting seat; 9. Mounting bolt; 10. Mounting bracket; 11. Mounting plate one; 12. Rack; 13. Limiting rod two; 14. Fixing plate two; 15. Sleeve; 16. Spring damper; 17. Slider; 18. Rotating shaft; 19. Gear; 20. Counter-support rod; 21. Support block; 22. Locking block; 23. Return spring; 24. Connecting block; 25. Adjusting bolt; 26. Fixing box; 27. Abutment block; 28. Trapezoidal block; 29. ​​Limiting block; 30. Clamping arm; 31. Connecting bracket; 32. Positioning column; 33. Adjusting screw. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 The present invention will be further described in detail below.

[0022] Please see the appendix Figure 1 - Appendix Figure 8 This invention provides a high-altitude cantilever steel structure support device, including a support plate 1 as a base connecting the main body of the building, a connecting plate 2 as a connecting hub on the upper side of the support plate 1, a support plate 3 as a cantilever platform rotatably connected to one side of the outer wall of the connecting plate 2 via a pivot 18, a support mechanism constituting the main load-bearing structure installed on the outer wall of the support plate 1, a quick-release mechanism for quick assembly and disassembly installed inside the connecting plate 2, and an installation mechanism for fixing the entire device to the building inside the support plate 1. The support mechanism, as the core triangular load-bearing system, includes a fixed plate 4 serving as the mounting base of the mechanism. One side of the outer wall of the fixed plate 4 is fixedly connected to one side of the outer wall of the support plate 1, providing a stable connection point for the entire support system. A limiting rod 5 for guiding the sliding of the support point is fixedly connected to the upper surface of the fixed plate 4. A hinge seat 6 serving as a movable hinge point is slidably connected to the outer wall of the limiting rod 5. A support rod 7 serving as the main inclined support component is rotatably connected inside the hinge seat 6. A mounting seat 8 for fixing the support rod 7 to the cantilever platform is rotatably connected to one side of the outer wall of the support rod 7. The mounting seat 8 is threadedly connected to the inside of the support plate 3 by mounting bolts 9. A mounting plate 11, which is symmetrically mounted on both sides and used to link other auxiliary systems, is fixedly connected to the outer wall of the hinge seat 6. A buffer component for absorbing impact energy is installed on one side of the outer wall of the support plate 1, and a counter-bracing component for providing dynamic adaptive support is installed on the other side of the outer wall of the mounting plate 11. Please see the appendix Figure 1 - Appendix Figure 8The buffer assembly includes a fixed plate 14 serving as a mounting base. One side of the outer wall of the fixed plate 14 is fixedly connected to the outer wall of the support plate 1 near the fixed plate 4. A sleeve 15 for accommodating damping elements is fixedly connected to the upper surface of the fixed plate 14. A spring damper 16 for dissipating vibration energy is provided on the inner wall of the sleeve 15. A limiting rod 13 serving as an impact transmission rod is fixedly connected to the lower surface of the mounting plate 11. The limiting rod 13 is vertically positioned directly above the spring damper 16 and is used to transmit force to the damper when the structure sinks due to impact. The counter-bracing assembly, as an active support system, includes a rack 12 serving as a transmission input. One side of the outer wall of the rack 12 is fixedly connected to one side of the outer wall of the mounting plate 11 and moves synchronously with it. A slider 17 serving as the core of the mechanism transmission is slidably connected inside the support plate 11. An internally rotating drive shaft 18 is connected, and a gear 19 that meshes with a rack 12 is fixedly connected to the outer wall of the shaft 18. The gear 19 meshes with the tooth end of the rack 12. A counter-support rod 20, which serves as a direct support actuator, is coaxially fixedly connected to the outer wall of the shaft 18 near the gear 19. A support block 21 for forming flexible contact with the cantilever platform is rotatably connected to the outer wall of the counter-support rod 20. An adjustment assembly for setting the initial support force is installed inside the fixed plate 4. The adjustment assembly includes an adjustment screw 33 that can provide precise displacement. The outer wall of the adjustment screw 33 is threaded inside the fixed plate 4, and its upper end is rotatably connected to the lower surface of the slider 17 for driving the slider 17 to move up and down.

[0023] Specifically, the support mechanism constitutes the main triangular stable load-bearing structure; the counter-bracing assembly, through the adjustment of the lead screw 33, achieves initial pre-tension of the counter-bracing rod 20, providing basic reverse support force for the cantilever platform. More importantly, when the cantilever platform sinks due to load, the mounting plate 11 drives the rack 12 to move, which in turn drives the gear 19 and the counter-bracing rod 20 to rotate, automatically converting the platform's sinking displacement into an upward, enhanced support force, forming dynamic mechanical compensation. At the same time, the buffer assembly can effectively absorb and dissipate energy through the spring damper 16 when the platform is subjected to instantaneous impact, thereby ensuring the high stability and high safety of the entire cantilever structure under complex and dynamic working conditions.

[0024] Please see the appendix Figure 1 - Appendix Figure 8The quick-release mechanism includes a locking block 22 as the core locking element. The outer wall of the locking block 22 is slidably connected to the inside of the connecting plate 2 in its guide cavity to ensure stable linear movement. The outer wall of the locking block 22 can penetrate the connecting plate 2 and extend to slide into the preset slot inside the support plate 1, thereby realizing mechanical locking between the two plates. A return spring 23 is provided near the side of the locking block 22 to provide normally closed locking force. A connecting block 24, which serves as a manual operation interface, is fixedly connected to the upper surface of the locking block 22. One end of the return spring 23 abuts against one side of the outer wall of the locking block 22 to directly apply a pushing force to it, while the other end of the return spring 23 abuts against the inner cavity side wall of the connecting plate 2 as a fixed reaction point of the elastic force.

[0025] Specifically, during installation, when the connecting plate 2 is inserted into the support plate 1, the guide structure of the support plate 1 first compresses the locking block 22 to retract. After reaching the predetermined position, the locking block 22 automatically pops out and locks into the slot of the support plate 1 under the elastic force stored in the return spring 23, completing a secure self-locking. During disassembly, only external force such as pressing or pulling needs to be applied to the connecting block 24 to drive the locking block 22 to overcome the spring force and retract, thereby disengaging from the slot and achieving quick separation. This design greatly simplifies high-altitude assembly operations, requires no fastening tools, and significantly improves installation efficiency and operational safety.

[0026] Please see the appendix Figure 1 - Appendix Figure 8 The installation mechanism, as the core unit for connecting the device to the building structure, includes an adjusting bolt 25 as the main power source. The outer wall of the adjusting bolt 25 can be rotatably connected in a bearing seat provided inside the support plate 1. A fixing box 26, which serves as the outer shell of the mechanism, is mounted on the adjusting bolt 25. One end of the adjusting bolt 25 is fixedly connected to an abutment block 27 for providing axial clamping force after locking. The fixing box 26 has symmetrical clamping arms 30 for performing clamping actions. A connecting frame 31 for fixing to the building can be accommodated and clamped between the two clamping arms 30. The outer wall of the connecting frame 31 is fixedly connected to an installation frame 10 that is directly fixed to the building structure by bolts. The two clamping arms 30 are located on the side near the connecting frame 31. Each component is fixedly connected with a positioning post 32 for precise locking. The outer wall of the adjusting bolt 25 is equipped with a drive assembly for converting rotational motion into translational motion of the clamping arm 30. The drive assembly includes a core trapezoidal block 28, the internal thread of which is connected to the outer wall of the adjusting bolt 25, thereby converting the rotation of the bolt into its own axial movement. The outer wall of the trapezoidal block 28 is fixedly connected with a limiting block 29 that serves as a guide and force transmitter. The outer wall of the limiting block 29 is slidably connected to the guide groove on the inner wall of the clamping arm 30, and its inclined surface pushes the clamping arm 30 to achieve opening and closing. The connecting frame 31 has multiple limiting holes for receiving the positioning post 32. The outer wall of the positioning post 32 can be slidably inserted into and locked into the inner wall of one limiting hole.

[0027] Specifically, during operation, simply rotating the adjusting bolt 25 converts its rotational motion into the linear axial motion of the trapezoidal block 28 via the threaded joint. The trapezoidal block 28 then pushes the limiting block 29 through its inclined surface, thereby driving the two clamping arms 30 to simultaneously tighten inward or open outward. During the tightening process, the clamping arms 30 not only firmly clamp the connecting frame 31 from both sides, but the positioning pins 32 on them can also accurately insert into the limiting holes of the connecting frame 31, forming a double-sided clamping and pin positioning double locking, which greatly improves the rigidity and shear resistance of the connection. At the same time, the pressing action of the abutment block 27 can eliminate assembly gaps, ensuring the stability and reliability of the connection between the entire device and the building structure.

[0028] This embodiment also provides a method for supporting and installing a high-altitude cantilevered steel structure, including the following steps: S1: Base fixing: The mounting frame 10 of the installation mechanism is fixed to the predetermined position of the building body with bolts, serving as the installation reference for the entire device; S2: Main body installation and locking. Align the mounting mechanism on the support plate 1 with the fixed connecting frame 31, so that the clamping arm 30 covers the outside of the connecting frame 31. Then rotate the adjusting bolt 25 to drive the trapezoidal block 28 and the limiting block 29 to move, so that the clamping arm 30 is tightened and the positioning post 32 on it is inserted into the limiting hole of the connecting frame 31, thus completing the firm connection between the support plate 1 and the building. S3: Quick assembly of the cantilever plate: Insert the connecting plate 2 connected to the support plate 2 3 into the corresponding slot of the support plate 1, and use the spring 23 of the quick release mechanism to push the locking block 22 to automatically lock into the internal slot of the support plate 1, so as to realize the quick installation of the support plate 2 3. S4: Main support rod connection, the support rod 7 in the support mechanism is aligned with the lower surface of the support plate 3 through its mounting seat 8, and it is tightened and fixed with the mounting bolt 9 to form the main triangular support structure; S5: Reverse support adjustment. Rotate the adjusting screw 33 of the reverse support assembly to move the slider 17. The slider 17 drives the gear 19 to mesh with the rack 12 through the rotating shaft 18, thereby driving the reverse support rod 20 to rise until the support block 21 at its top tightly abuts against the lower side of the support plate 2 3, providing precise reverse support force, and adjusting its support force according to the actual cantilever requirements.

[0029] Working principle: First, the mounting bracket 10 on one side of the connecting frame 31 is bolted to the building. Then, the clamping arm 30 in its unfolded state is clamped on the outside of the connecting frame 31. At this time, by rotating the adjusting bolt 25, the positioning post 32 is brought into the limiting hole on one side of the connecting frame 31. By adjusting the bolt 25, the contact block 27 is made to abut against the outer wall of the connecting frame 31. At the same time, by adjusting the bolt 25, the trapezoidal block 28 is made to slide axially inside the fixing box 26. At this point, the movement of trapezoidal block 28 causes limiting block 29 to slide inside clamping arm 30, thereby achieving the effect of clamping arm 30 inserting positioning post 32 into limiting hole for fixation. Then, by inserting hinge seat 6 into the outer wall of limiting rod 5, and then by inserting connecting plate 2 on one side of support plate 3 into one side of support plate 1, and then by inserting locking block 22 into support plate 1, the reaction force of return spring 23 is used to quickly insert locking block 22 into support plate 1 for installation. The effect is that after the support plate 23 is installed by the locking block 22, the mounting bolt 9 is fixed to the lower side of the support plate 23 by passing through the mounting seat 8, thereby achieving the effect of fixing the support rod 7. At this time, by rotating the adjusting screw 33 to move inside the fixed plate 14, the slider 17 is pushed to slide inside the support plate 1. Then, the slider 17 drives the gear 19 on the outside of the rotating shaft 18 to mesh with the rack 12, thereby driving the support block 21 on the side of the counter-support rod 20 to abut against the lower side of the support plate 23 for reverse support. By adjusting the rotation of the screw 33, the support force can be easily adjusted according to the support requirements. At the same time, when the support plate 23 moves downward, the rack 12 driven by the mounting plate 11 drives the gear 19 to rotate, thereby further driving the support block 21 on the side of the counter-support rod 20 to abut against the lower side of the support plate 23 for stable support. At the same time, the mounting plate 11 will drive the limiting rod 23 to insert into the sleeve 15 and abut against the upper side of the spring damper 16 to achieve a further buffering support effect.

Claims

1. A high-rise cantilever steel structure support device, characterized by, Including support plate one (1), the upper side of support plate one (1) is provided with a connecting plate (2), one side of the outer wall of the connecting plate (2) is rotatably connected with support plate two (3), the outer wall of support plate one (1) is provided with a supporting mechanism, the inside of the connecting plate (2) is provided with a quick release mechanism, the inside of support plate one (1) is provided with a mounting mechanism; The supporting mechanism comprises a fixed plate one (4), one side of the outer wall of the fixed plate one (4) is fixedly connected to one side of the outer wall of the support plate one (1), the upper surface of the fixed plate one (4) is fixedly connected with a limiting rod one (5), the outer wall of the limiting rod one (5) is slidably connected with a hinge seat one (6), the inside of the hinge seat one (6) is rotatably connected with a supporting rod (7), one side of the outer wall of the supporting rod (7) is rotatably connected with a mounting seat (8), the mounting seat (8) is threadedly connected to the inside of the support plate two (3) through mounting bolts (9), the outer wall of the hinge seat one (6) is fixedly connected with left and right symmetrical mounting plates one (11), the outer wall of the support plate one (1) is provided with a buffer assembly, the outer wall of the mounting plate one (11) is provided with a counter supporting assembly.

2. The high-altitude overhanging steel structure support device according to claim 1, characterized in that, The buffer assembly comprises a fixed plate two (14), one side of the outer wall of the fixed plate two (14) is fixedly connected to one side of the outer wall of the support plate one (1) close to the fixed plate one (4), the upper surface of the fixed plate two (14) is fixedly connected with a sleeve (15), the inner wall of the sleeve (15) is provided with a spring damper (16), the lower surface of the mounting plate one (11) is fixedly connected with a limiting rod two (13), the limiting rod two (13) is arranged directly above the spring damper (16).

3. The high altitude overhanging steel structure support device according to claim 1, characterized in that, The counter supporting assembly comprises a rack (12), one side of the outer wall of the rack (12) is fixedly connected to one side of the outer wall of the mounting plate one (11), the inside of the support plate one (1) is slidably connected with a sliding block (17), the inside of the sliding block (17) is rotatably connected with a rotating shaft (18), the outer wall of the rotating shaft (18) is fixedly connected with a gear (19), the gear (19) is engaged with the tooth end of the rack (12), one side of the outer wall of the rotating shaft (18) close to the gear (19) is fixedly connected with a counter supporting rod (20), the outer wall of the counter supporting rod (20) is rotatably connected with a supporting block (21), the inside of the fixed plate one (4) is provided with an adjusting assembly.

4. The high-rise overhanging steel structure support device according to claim 3, characterized in that, The adjusting assembly comprises an adjusting screw (33), the outer wall of the adjusting screw (33) is threadedly connected to the inside of the fixed plate one (4), the upper end of the adjusting screw (33) is rotatably connected to the lower surface of the sliding block (17).

5. The high-rise overhanging steel structure support device according to claim 4, characterized in that, The quick release mechanism comprises a clamping block (22), the outer wall of the clamping block (22) is slidably connected to the inside of the connecting plate (2), the outer wall of the clamping block (22) penetrates through the connecting plate (2) and is slidably connected to the inside of the support plate one (1), a return spring (23) is arranged close to one side of the clamping block (22), the upper surface of the clamping block (22) is fixedly connected with a connecting block (24).

6. The high-rise overhanging steel structure support device according to claim 5, characterized in that, The mounting mechanism comprises an adjusting bolt (25), an outer wall of the adjusting bolt (25) is rotationally connected inside the support plate one (1), an outer wall of the adjusting bolt (25) is rotationally connected with a fixing box (26), one end of the adjusting bolt (25) is fixedly connected with an abutting block (27), an inner wall of the fixing box (26) is slidably connected with left-right symmetrical clamping arms (30), a connecting frame (31) is arranged between the two clamping arms (30), an outer wall of the connecting frame (31) is fixedly connected with a mounting frame (10), one side of the two clamping arms (30) close to the connecting frame (31) is fixedly connected with a positioning column (32), and an outer wall of the adjusting bolt (25) is mounted with a driving assembly.

7. The high-rise overhanging steel structure support device according to claim 6, characterized in that, The driving assembly comprises a trapezoidal block (28), an inner wall of the trapezoidal block (28) is threadedly connected with an outer wall of the adjusting bolt (25), and an outer wall of the trapezoidal block (28) is fixedly connected with a limiting block (29).

8. The high-rise overhanging steel structure support device according to claim 6, characterized in that, An inner wall of the connecting frame (31) is provided with a plurality of limiting holes, and an outer wall of the positioning column (32) is slidably connected with an inner wall of one of the limiting holes.

9. The high-rise overhanging steel structure support device according to claim 5, characterized in that, One end of the reset spring (23) abuts against one side of an outer wall of the clamping block (22), and the other end of the reset spring (23) abuts against a side wall of an inner cavity of the connecting plate (2).

10. A method of installing a high-rise overhanging steel structure support, characterized by, The high-altitude cantilever steel structure support device is applied to any one of claims 1-9, The method comprises the following steps: S1: base fixing, the mounting frame (10) of the mounting mechanism is fixed on the predetermined position of the building main body by bolts, serving as the installation reference of the whole device; S2: main body installation and locking, the mounting mechanism on the support plate one (1) is aligned with the fixed connecting frame (31), so that the clamping arms (30) are wrapped outside the connecting frame (31); then the adjusting bolt (25) is rotated, the trapezoidal block (28) and the limiting block (29) are driven to move, the clamping arms (30) are tightened, the positioning columns (32) thereon are inserted into the limiting holes of the connecting frame (31), and the firm connection between the support plate one (1) and the building is completed; S3: cantilever plate rapid assembly, the connecting plate (2) connected with the support plate two (3) is inserted into the corresponding slot of the support plate one (1), the clamping block (22) is automatically clamped into the inner clamping groove of the support plate one (1) by the reset spring (23) of the quick release mechanism, and the rapid installation of the support plate two (3) is realized; S4: main support rod connection, the support rod (7) in the support mechanism is aligned with the lower surface of the support plate two (3) through the mounting seat (8) thereof, and is fixedly screwed by using the mounting bolt (9), so as to form a main triangular support structure; S5: reverse support adjustment, the adjusting screw rod (33) of the reverse support assembly is rotated, the sliding block (17) is moved, the sliding block (17) drives the gear (19) and the rack (12) to mesh and rotate through the rotating shaft (18), and then the reverse support rod (20) is driven to be lifted up, until the support block (21) at the top end thereof tightly abuts against the lower side of the support plate two (3), accurate reverse support force is provided, and the support degree is adjusted according to the actual cantilever demand.

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