Suspended lifting method for dome steel net rack

Abstract

The invention provides a suspended lifting method for a dome steel net rack, and belongs to the field of building construction, the ground of a construction site is a multi-stage step extending from bottom to top, a first rack body is assembled on the step at the lowest stage, and a lifting mechanism lifts the first rack body; after the first frame body is lifted to the height of the second-stage step, the first frame body extends on the second-stage step to be spliced into a second frame body, and a second set of lifting mechanism is additionally arranged to be connected with the second frame body; and thirdly, the hoisting and extension assembling process is repeated till the central steel net rack is hoisted to the step of the uppermost stage and extends to be assembled into the central steel net rack, then the central steel net rack is hoisted to be as high as the surrounding steel net racks, and the central steel net rack and the surrounding steel net racks are assembled. Different construction requirements are met, the height of any lifter can be independently adjusted, the adjusting precision is extremely high, meanwhile, erecting of an assembling platform is omitted, the construction period is shortened, and the assembling efficiency is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, in particular to a method for suspending and lifting a dome steel grid. Background Art

[0002] Suspended domes in building construction usually use curved steel grids to meet acoustic and aesthetic requirements. However, some construction sites have stepped stands with very large spans. The traditional construction method is very difficult to construct the suspended dome curved grids: (1) The traditional high-altitude bulk method is used for construction. Due to the large span, high height and long cantilever section of the steel curved grid support, temporary structural stress is easily induced during construction, causing the overall grid to deform and become unstable, which is very dangerous. Moreover, deformation will easily cause the high-altitude positioning to accumulate errors and lead to closing failure. (2) Because the ground is a stepped stand, it cannot meet the assembly platform conditions of the traditional overall lifting method. (3) The traditional full-floor scaffolding method is used for construction. Firstly, due to the irregular stand structure at the bottom, the stand structure load needs to be verified and the load-bearing capacity of the stand structure needs to be strengthened during the design stage. Secondly, the full-floor scaffolding construction requires a large investment of resources and a long construction period. Third, the lifting operation relies on a tower crane, and it is difficult to lift each unit simultaneously, which can easily cause temporary overstress of the structure; (4) Full-floor scaffolding or high-altitude bulk loading requires a large number of people to work at height, which can easily cause falls and collapses, making safety management difficult; (5) High-altitude welding operations require high technical quality of welders and high quality control requirements.

[0003] Chinese patent CN118007799A discloses a method for assembling a large-span grid dome in stages by jacking up the dome rings. This method involves assembling the central grid and multiple outer grid rings in stages by constructing a ground-based jacking frame. However, this method is difficult to apply to construction environments with narrow construction sites and narrow steps, making it difficult to construct a jacking frame in such sites. Furthermore, the need for the jacking frame during construction results in long construction times and high costs. Summary of the Invention

[0004] In view of this, the present invention proposes a method for suspended lifting of a dome steel grid, which is used to solve the problems that the construction site is narrow, it is difficult to build a jacking frame for staged jacking construction, and the construction cost of the jacking frame is high.

[0005] The technical solution of the present invention is achieved as follows: The present invention provides a method for lifting a dome steel grid frame in mid-air, comprising the following steps: step 1, a construction site is surrounded by four walls, and a surrounding steel grid frame is arranged on the top of each wall. The ground of the construction site is a plurality of steps extending from bottom to top. A first frame is assembled on the lowest step, and a first set of lifting mechanisms are symmetrically arranged on the tops of two walls on both sides along the extension direction of the steps. The lifting mechanisms are connected to the first frame and lift the first frame; step 2, after the first frame is lifted to the height of the second step, the first frame is extended and assembled on the second step to form a second frame, and a second set of lifting mechanisms is added to be connected to the second frame; step 3, the lifting and extending and assembling process is repeated until it is lifted to the uppermost step and extended to form a central steel grid frame, and then the central steel grid frame is lifted to the same height as the surrounding steel grid frames, and the central steel grid frame is assembled with the surrounding steel grid frames.

[0006] On the basis of the above technical solution, preferably, in step two, a gap is left between the first frame and the walls on both sides; in step three, a gap is also left between the front and rear ends of the central steel grid and the wall; in step two or step three, a support assembly is provided on the top of each wall, and a lifting mechanism is provided on the support assembly, and the lifting mechanism translates relative to the support assembly and adjusts the size of the gap.

[0007] Further preferably, the support assembly includes a bracket, a first slide and a second slide; one end of the bracket is arranged at the top edge of the wall, the other end of the bracket extends above the side edge of the first frame, and a first through hole is vertically opened on the free end of the bracket; the first slide is sleeved in the first through hole, and the first slide moves horizontally relative to the bracket in a direction perpendicular to the extension direction of the step, and a second through hole is vertically opened in the first slide, and the second through hole is connected to the first through hole; the second slide is sleeved in the second through hole, and the second slide moves horizontally relative to the first slide along the extension direction of the step, and a third through hole is vertically opened in the second slide, and the third through hole is simultaneously connected to the first through hole and the second through hole, the lifting mechanism is arranged on the top surface of the second slide and moves synchronously with the second slide, and the lifting rope of the lifting mechanism passes through the third through hole and is connected to the first frame.

[0008] Further preferably, the support assembly also includes a first telescopic mechanism and a second telescopic mechanism; a first gap is left between the two side surfaces at both ends of the first sliding sleeve along its moving direction and the inner side wall of the first through hole; a second gap is left between the two side surfaces at both ends of the second sliding sleeve along its moving direction and the inner side wall of the second through hole; the first telescopic mechanism is arranged in the first gap, and the first telescopic mechanism drives the first sliding sleeve to translate in the first through hole; the second telescopic mechanism is arranged in the second gap, and the second telescopic mechanism drives the second sliding sleeve to translate in the second through hole.

[0009] More preferably, the widths of the first interval and the second interval are both greater than the width of the gap.

[0010] Further preferably, a group of two first telescopic mechanisms are arranged in the same first interval, one end of the two first telescopic mechanisms are simultaneously hinged to the center of the side surface of the first sliding sleeve, and one end of the two first telescopic mechanisms are hinged to the inner wall of the first through hole at intervals; a group of two second telescopic mechanisms are arranged in the same second interval, one end of the two second telescopic mechanisms are simultaneously hinged to the center of the side surface of the second sliding sleeve, and one end of the two second telescopic mechanisms are hinged to the inner wall of the second through hole at intervals.

[0011] Further preferably, the two first telescopic mechanisms are symmetrically arranged relative to the moving direction of the first sliding sleeve, and the two first telescopic mechanisms and the inner wall of the first through hole form an isosceles triangle; the two second telescopic mechanisms are symmetrically arranged relative to the moving direction of the second sliding sleeve, and the two second telescopic mechanisms and the inner wall of the second through hole form an isosceles triangle.

[0012] More preferably, the support assembly further includes a winding mechanism, which is arranged on a side surface of the bracket, a pull rope is wound around the winding mechanism, and an end portion of the pull rope is connected to a side edge of the first frame.

[0013] More preferably, the lifting mechanism translates relative to the bracket and drives the first frame to translate relative to any wall, and the pull rope is straightened and pulls the first frame.

[0014] On the other hand, the present invention also provides a glass dome suspended steel grid frame, which is constructed using the above-mentioned dome steel grid frame suspended lifting method.

[0015] The method for lifting a dome steel grid suspended in mid-air according to the present invention has the following beneficial effects compared with the prior art: (1) The present invention adopts a lifting mechanism installed on the top of the site wall to lift the steel grid in stages and extend and assemble it, thereby obtaining a suspended steel grid structure of the entire central part. The suspended lifting method ensures that each component can be accurately locked at any position during the lifting process. In addition, in order to meet different construction requirements, any lifting mechanism can be adjusted in height and level independently, and the adjustment accuracy is extremely high, thereby significantly improving the controllability of the installation accuracy during the structure lifting process, thereby effectively ensuring the construction quality and improving the overall construction efficiency; at the same time, it saves the construction of the assembly platform, saves construction time and has higher assembly efficiency, greatly reducing safety and material transportation.

[0016] (2) The present invention realizes precise adjustment of the horizontal gap of the steel grid at each stage by driving the inner and outer sliding sleeves to translate respectively through two sets of inner and outer telescopic mechanisms; each set of telescopic mechanisms is designed in a triangular structure, which can control the shorter translation distance through the longer telescopic formation, thereby realizing precise control of the horizontal gap.

[0017] (3) The present invention uses the pull rope of the winding mechanism to pull the steel grid, so that the steel grid will not collide with the wall due to the inertia generated by its huge mass during the translation fine-tuning process, thereby avoiding damage to the steel grid or the construction environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 Schematic diagram of the construction method of the present invention; Figure 2 is a perspective view of a support assembly of the present invention; Figure 3 It is a partial top view of the support assembly of the present invention.

[0020] In the figure: 1. wall; 101. gap; 2. surrounding steel grid; 3. central steel grid; 31. first frame; 32. second frame; 4. lifting mechanism; 5. supporting assembly; 51. bracket; 52. first sliding sleeve; 53. second sliding sleeve; 54. first telescopic mechanism; 55. second telescopic mechanism; 56. winding mechanism; 501. first through hole; 502. second through hole; 503. third through hole; 504. first interval; 505. second interval. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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.

[0022] like Figure 1 As shown, a method for lifting a dome steel grid in mid-air according to the present invention comprises the following steps: Step 1: The construction site is surrounded by four walls 1. Walls 1 refer to the building facilities surrounding the closed construction site. Since this project is a lecture hall, it is impossible to build pillars on the construction site to support the dome structure. Therefore, the dome structure in this project is a suspended dome. Therefore, a surrounding steel grid 2 is set on the top of each wall 1. The surrounding steel grid 2 provides support for the entire dome structure. Each steel grid usually adopts a club splicing structure. The ground of the construction site is a multi-level staircase extending from bottom to top. As a lecture hall, each step will also include several small stairs. Therefore, it is difficult to build scaffolding or jacking frames on each step or ladder. Therefore, this solution adopts the method of lifting the steel grid from the top of the wall 1. First, a first frame 31 is assembled on the lowest step. During assembly, a temporary support structure such as a pad can be placed on the step to provide support for the first frame 31. A first set of lifting mechanisms 4 is symmetrically positioned on top of the two walls 1 on either side of the step. After assembly of the first frame 31 is complete, the lifting mechanisms 4 are connected to the first frame 31, lifting the first frame 31, and then removing the pad. The lifting mechanisms 4 can be electric hoists.

[0023] In step two, after the first frame 31 is hoisted to the height of the second step, it is extended and assembled on the second step to form the second frame 32. Similarly, a temporary pad can be laid on the second step. At this time, the first frame 31 is in the hoisted state, so that the extension construction can be carried out directly on the first frame 31; after the second frame 31 is assembled, its extended and assembled portion will be placed on the second step. Then, a second set of hoisting mechanisms 4 is added at the corresponding position on the top of the wall 1 to connect to the second frame 32, and the lengthened second frame 32 is hoisted.

[0024] Step three: Repeat the lifting and extension assembly process. For n steps, repeat this process n-1 times until the top step is reached and the central steel grid 3 is extended and assembled. The central steel grid 3 is then lifted to the same height as the surrounding steel grids 2 and assembled with the surrounding steel grids 2. Assembly methods include welding, screwing, etc. This construction method avoids the need for scaffolding or jacking frames on the steps. Instead, multiple lifting mechanisms 4 are installed on top of the wall 1, resulting in a very low construction cost and suitable for the construction of suspended dome steel grids in a variety of enclosed areas.

[0025] exist Figure 2In a preferred embodiment shown, in step two, a gap 101 is left between the first frame 31 and the two side walls 1; in step three, a gap 101 is also left between the front and rear ends of the central steel grid 3 and the wall 1; during the lifting process of each frame in step two or step three, due to operations such as aerial posture adjustment and post-installed rod installation, it may be necessary to fine-tune the horizontal position of each frame. Therefore, in this embodiment, a support assembly 5 is provided on the top of each wall 1, and a lifting mechanism 4 is provided on the support assembly 5. The lifting mechanism 4 translates relative to the support assembly 5 and adjusts the size of the gap 101. By driving the lifting mechanism 4 to translate, the steel grid is lifted by the lifting mechanism 4. Therefore, the steel grid will also translate slightly as the position of the lifting mechanism 4 translates, thereby meeting the accuracy requirements of the structural installation in each construction step.

[0026] exist Figure 2 In a preferred embodiment shown, the support assembly 5 includes a bracket 51 , a first sliding sleeve 52 and a second sliding sleeve 53 .

[0027] Among them, the bracket 51 is an inverted L-shape, and a reinforcing rib is set at its bending part, and reinforcing support rods are also set on both sides of the bracket 51. The bottom end of the vertical rod of the bracket 51 is set at the top edge of the wall 1, and the end of the horizontal beam of the bracket 51 extends to above the side edge of the first frame 31. A first through hole 501 is vertically opened on the free end of the bracket 51.

[0028] The first sliding sleeve 52 is mounted within the first through hole 501. The first sliding sleeve 52 translates relative to the bracket 51 in a direction perpendicular to the direction in which the steps extend. A second through hole 502 is defined vertically within the first sliding sleeve 52, and the second through hole 502 communicates with the first through hole 501. The translation of the first sliding sleeve 52 drives the steel grid to perform fine translation adjustment of the left and right gaps 101.

[0029] The second sliding sleeve 53 is mounted within the second through hole 502. The second sliding sleeve 53 translates relative to the first sliding sleeve 52 along the direction in which the step extends. When the second sliding sleeve 53 translates, it can drive the steel grid to perform fine translational adjustments to the front-to-back gap 101. A third through hole 503 is vertically defined within the second sliding sleeve 53. The third through hole 503 is connected to both the first through hole 501 and the second through hole 502. The lifting mechanism 4 is disposed on the top surface of the second sliding sleeve 53 and moves synchronously with the second sliding sleeve 53. The lifting rope of the lifting mechanism 4 passes through the third through hole 503 and is connected to the first frame 31. To ensure safety and stability during lifting, the lifting rope is a steel cable or chain rope. The diameter of the third through hole 503 needs to be relatively large to allow the lifting rope to move freely and smoothly.

[0030] exist Figure 3 In a preferred embodiment shown, the support assembly 5 further includes a first telescopic mechanism 54 and a second telescopic mechanism 55 .

[0031] Among them, a first gap 504 is left between the two side surfaces of the first sliding sleeve 52 at both ends of its moving direction and the inner wall of the first through hole 501, and the other two side surfaces of the first sliding sleeve 52 are tightly attached to the inner wall of the first through hole 501, and balls or rollers can be set between the two tightly attached surfaces so that they can move smoothly; a second gap 505 is left between the two side surfaces of the second sliding sleeve 53 at both ends of its moving direction and the inner wall of the second through hole 502, and the other two side surfaces of the second sliding sleeve 53 are tightly attached to the inner wall of the second through hole 502, and balls or rollers can also be set between the two tightly attached surfaces so that they can move smoothly.

[0032] The first telescopic mechanism 54 is disposed within the first compartment 504 and drives the first sliding sleeve 52 to translate within the first through hole 501. The two first telescopic mechanisms 54 within the two first compartments 504 are coaxially disposed; when the first sliding sleeve 52 translates, the first telescopic mechanism 54 located opposite to the first telescopic mechanism 54 extends and pushes the first sliding sleeve 52 to move.

[0033] The second telescopic mechanism 55 is disposed within the second compartment 505 and drives the second sleeve 53 to translate within the second through-hole 502. The two second telescopic mechanisms 55 within the two second compartments 505 are also coaxially arranged; when the second sleeve 53 translates, the second telescopic mechanism 55 located opposite the second sleeve 53 extends and pushes the sleeve 53 to move. Each telescopic mechanism utilizes a hydraulic cylinder, enabling precise control of the micro-translation of each sleeve.

[0034] exist Figure 3 In a preferred embodiment shown, the widths of the first interval 504 and the second interval 505 are both greater than the width of the gap 101, thereby leaving installation space for the telescopic mechanism and ensuring that the lifting mechanism 4 has sufficient translation space.

[0035] exist Figure 3In a preferred embodiment shown, two first telescopic mechanisms 54 are arranged in a group within the same first interval 504, one end of the two first telescopic mechanisms 54 are simultaneously hinged to the center of the side of the first sliding sleeve 52, and one end of the two first telescopic mechanisms 54 are hinged to the inner wall of the first through hole 501 at intervals; two second telescopic mechanisms 55 are arranged in a group within the same second interval 505, one end of the two second telescopic mechanisms 55 are simultaneously hinged to the center of the side of the second sliding sleeve 53, and one end of the two second telescopic mechanisms 55 are hinged to the inner wall of the second through hole 502 at intervals. Compared with setting a single telescopic mechanism in each interval to drive the sliding sleeve to translate, the two telescopic mechanisms are set in an isosceles triangle and apply a pushing effect to the sliding sleeve at the same time. This has two advantages: first, since the telescopic mechanism is set at an angle, its longer extension length will cause the sliding sleeve to translate a relatively short distance, which is more conducive to more accurate control and fine-tuning of the translational micro-movement distance of the sliding sleeve; second, since the steel grid lifted under the lifting mechanism 4 is of great mass, it will cause increased downward pressure on the sliding sleeve, making it difficult for the sliding sleeve to translate, so a larger pushing force is required to push the sliding sleeve to move. If a single telescopic mechanism is used to apply the thrust, the burden on the single telescopic mechanism is extremely heavy, and a single pushing force is concentrated on the sliding sleeve, causing stress concentration. Therefore, the two telescopic mechanisms are set in an isosceles triangle and apply a pushing force at the same time, which not only reduces the burden on each telescopic mechanism, but also the pushing force of the sliding sleeve is the resultant force of the two component forces of the two cross forces, thus avoiding the problem of stress concentration.

[0036] exist Figure 3 In the preferred embodiment shown, two first telescopic mechanisms 54 are symmetrically arranged relative to the direction of movement of the first sleeve 52, forming an isosceles triangle with the inner wall of the first through-hole 501. Two second telescopic mechanisms 55 are symmetrically arranged relative to the direction of movement of the second sleeve 53, forming an isosceles triangle with the inner wall of the second through-hole 502. The simultaneous application of propulsion force by the two telescopic mechanisms in an isosceles triangle not only reduces the burden on each telescopic mechanism, but also ensures that the pushing force on the sleeve is the resultant of the two intersecting forces, thereby avoiding stress concentration.

[0037] exist Figure 2 In a preferred embodiment shown, the support assembly 5 further includes a winding mechanism 56 disposed on a side of the bracket 51. A pull rope is wound around the winding mechanism 56, and the end of the pull rope is connected to a side edge of the first frame 31. The winding mechanism 56 can be a commercially available winding motor device, and the pull rope can be a thick cable.

[0038] exist Figure 2In a preferred embodiment shown, the hoisting mechanism 4 translates relative to the bracket 51, driving the first frame 31 to translate relative to any wall 1, while the pull rope is stretched and holds the first frame 31. Although the steel grid's translational distance and movement are extremely small when fine-tuning the steel grid, due to its significant overall mass, even this minute translation generates significant inertia, causing the steel grid to sway left and right or forward and backward in the hoisted state, thereby preventing collision damage between the steel grid and the wall 1. Therefore, in this embodiment, the pull rope of the winding mechanism 56 holds the steel grid. When the steel grid translates and generates inertial force, the elastic redundancy of the pull rope of the winding mechanism 56 offsets the inertial force and limits the movement of the steel grid, thereby preventing the steel grid from swaying significantly and striking the wall 1, thereby improving construction safety.

[0039] like Figure 1 As shown, combined Figure 2 and Figure 3 The glass dome suspended steel grid frame of the present invention is constructed by using a dome steel grid frame suspended lifting method of any of the above embodiments.

[0040] This application estimates the cost savings of this solution compared to the conventional full-floor scaffolding construction solution during the construction period: the construction ground area is 12009.25m 2 The dome height is 8.5-9 meters. The estimated cost of assembling the platform for the full-height, interlocking scaffolding is 493,130.88 yuan, and the cost of laying the steel plate for the assembly platform is 1,058,454.08 yuan. The estimated time savings are 15 days. Three tower cranes are used for construction, each costing 14,000 yuan per month. The machinery and equipment costs are 15 x 3 x 14,000 / 30 = 21,000 yuan. The management fee is approximately 500 yuan per person per day, and with 20 management personnel, the management fee is 15 x 500 x 20 = 150,000 yuan. Therefore, the total cost savings are 1,722,584.96 yuan.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 method for lifting a dome steel grid in mid-air, characterized in that: The following steps are involved: Step 1: The construction site is surrounded by four walls (1), and a surrounding steel grid (2) is provided on the top of each wall (1). The ground of the construction site is a multi-step step extending from bottom to top. A first frame (31) is assembled on the lowest step. A first set of lifting mechanisms (4) are symmetrically provided on the tops of the two walls (1) on both sides along the extending direction of the step. The lifting mechanisms (4) are connected to the first frame (31) and lift the first frame (31); Step 2: After the first frame (31) is lifted to the height of the second step, the first frame (31) is extended on the second step to assemble a second frame (32), and a second set of the lifting mechanism (4) is added to connect with the second frame (32); Step three, repeating the lifting and extending assembly process until it is lifted to the uppermost step and extended to assemble the central steel grid (3), then lifting the central steel grid (3) to the same height as the surrounding steel grids (2), and assembling the central steel grid (3) and the surrounding steel grids (2) together.

2. The method for lifting a dome steel grid in mid-air according to claim 1, characterized in that: In the second step, a gap (101) is left between the first frame (31) and the two side walls (1); in the third step, a gap (101) is also left between the front and rear ends of the central steel grid (3) and the wall (1); In step 2 or step 3, a support assembly (5) is provided on the top of each wall (1), the lifting mechanism (4) is provided on the support assembly (5), and the lifting mechanism (4) moves relative to the support assembly (5) and adjusts the size of the gap (101).

3. The method for lifting a dome steel grid in mid-air according to claim 2, characterized in that: The support assembly (5) comprises a bracket (51), a first sliding sleeve (52) and a second sliding sleeve (53); One end of the bracket (51) is arranged on the top edge of the wall (1), and the other end of the bracket (51) extends above the side edge of the first frame (31). A first through hole (501) is vertically opened on the free end of the bracket (51); The first sliding sleeve (52) is sleeved in the first through hole (501), and the first sliding sleeve (52) moves in a direction perpendicular to the step extension direction relative to the bracket (51). A second through hole (502) is vertically opened in the first sliding sleeve (52), and the second through hole (502) is connected to the first through hole (501); The second sliding sleeve (53) is sleeved in the second through hole (502), and the second sliding sleeve (53) moves horizontally relative to the first sliding sleeve (52) along the step extension direction. A third through hole (503) is vertically opened in the second sliding sleeve (53), and the third through hole (503) is connected to the first through hole (501) and the second through hole (502) at the same time. The lifting mechanism (4) is arranged on the top surface of the second sliding sleeve (53) and moves synchronously with the second sliding sleeve (53). The lifting rope of the lifting mechanism (4) passes through the third through hole (503) and is connected to the first frame (31).

4. The method for lifting a dome steel grid in mid-air according to claim 3, characterized in that: The support assembly (5) further includes a first telescopic mechanism (54) and a second telescopic mechanism (55); A first gap (504) is left between the two side surfaces at both ends of the first sliding sleeve (52) along the moving direction and the inner side wall of the first through hole (501); a second gap (505) is left between the two side surfaces at both ends of the second sliding sleeve (53) along the moving direction and the inner side wall of the second through hole (502); The first telescopic mechanism (54) is arranged in the first interval (504), and the first telescopic mechanism (54) drives the first sliding sleeve (52) to translate in the first through hole (501); The second telescopic mechanism (55) is arranged in the second interval (505), and the second telescopic mechanism (55) drives the second sliding sleeve (53) to translate in the second through hole (502).

5. The method for lifting a dome steel grid in mid-air according to claim 4, characterized in that: The widths of the first interval (504) and the second interval (505) are both greater than the width of the gap (101).

6. The method for lifting a dome steel grid in mid-air according to claim 4, characterized in that: Two of the first telescopic mechanisms (54) are arranged in a same first interval (504), one end of the two first telescopic mechanisms (54) is hinged to the center of the side of the first sliding sleeve (52) at the same time, and one end of the two first telescopic mechanisms (54) is hinged to the inner wall of the first through hole (501) at intervals; A group of two second telescopic mechanisms (55) are arranged in the same second interval (505), one end of the two second telescopic mechanisms (55) is hinged to the center of the side of the second sliding sleeve (53) at the same time, and one end of the two second telescopic mechanisms (55) is hinged to the inner wall of the second through hole (502) at intervals.

7. The method for lifting a dome steel grid in mid-air according to claim 4, characterized in that: The two first telescopic mechanisms (54) are symmetrically arranged relative to the moving direction of the first sliding sleeve (52), and the two first telescopic mechanisms (54) and the inner wall of the first through hole (501) form an isosceles triangle; The two second telescopic mechanisms (55) are symmetrically arranged relative to the moving direction of the second sliding sleeve (53), and the two second telescopic mechanisms (55) and the inner wall of the second through hole (502) form an isosceles triangle.

8. The method for lifting a dome steel grid in mid-air according to claim 3, characterized in that: The support assembly (5) further comprises a winding mechanism (56), The winding mechanism (56) is arranged on a side of the bracket (51), a drawstring is wound on the winding mechanism (56), and the end of the drawstring is connected to the side edge of the first frame (31).

9. The method for lifting a dome steel grid in mid-air according to claim 8, characterized in that: The lifting mechanism (4) moves horizontally relative to the bracket (51) and drives the first frame (31) to move horizontally relative to any wall (1); the pull rope is straightened and pulls the first frame (31).

10. A glass dome suspended steel grid, characterized by: The dome steel grid is obtained by using the suspended lifting method according to any one of claims 1 to 9.

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