Temporary support frame for installing assembled lattice steel structure and use method thereof

Abstract

The present invention relates to a temporary support frame for installing an assembled lattice steel structure and a method of using the frame, including a base section, a standard section, an adjustment section inner section, an adjustment section outer section, an adjustment top support, and a jack for unloading; the base section includes a base section column limb, a base section tie bar, and a base section cross beam; the standard section includes a standard section column limb, a standard section tie bar, and a standard section cross beam; the adjustment section inner section includes an adjustment section inner section column limb, an adjustment section inner section tie bar, and an adjustment section inner section cross beam. Through the present invention, the deficiencies of the prior art and devices are overcome, construction space is saved, the erection period is short, and the reuse rate is high; the lattice-type assembly section is light in weight, high in bearing capacity, and convenient to hoist; each assembly section can be flexibly assembled according to actual needs, and is easy to install; through multiple height adjustment devices, the installation elevation of the steel structure is ensured, and the installation of complex steel structures with variable elevations can be met, and the unloading operation after the steel structure is installed is convenient.

Description

Technical Field

[0001] The present invention relates to a temporary support frame for installing an assembled lattice steel structure and a use method thereof. The temporary support frame is used to temporarily support the steel structure during the high-altitude installation construction of a conventional or special-shaped steel structure, thereby reducing the material consumption and erection time of the temporary support frame for installation, effectively controlling the installation accuracy of steel structures at different elevations, and facilitating the unloading operation after the steel structure is installed. The present invention belongs to the field of construction engineering. Background Art

[0002] Architectural steel structures are diverse in form and beautiful in appearance, and are widely used in large public buildings. With the improvement of construction technology, there are steel structures that are difficult to install and construct, such as special-shaped columns, variable-elevation space trusses, and large-span trusses. There are two conventional construction methods for temporary support frames for steel structure installation. One is to erect a full-floor scaffolding, which has a long erection period and consumes a large amount of turnover materials. Especially for spatial structures with large plane dimensions, scaffolding must be erected throughout the construction range to ensure the installation of the steel structure; the other is to erect multiple independent support frames, which reduces the material consumption of temporary support frames. Each frame needs to be made on-site according to the elevation of the support point, which requires large construction work and poor reusability. The erection height cannot be adjusted twice to eliminate the errors caused during the erection of the support frame. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and to provide a temporary support frame for installing an assembled lattice steel structure and a method of using the same.

[0004] The object of the present invention is achieved by providing a temporary support frame for installing an assembled lattice steel structure, which is characterized by comprising a base section, a standard section, an adjustment section inner section, an adjustment section outer section, an adjustment top support, and a jack for unloading;

[0005] The base section includes a base section column limb, a base section tie bar, and a base section cross beam. The base section column limbs are fixed to each other through a base section cross beam. One end of the base section cross beam is fixed to the base section column limb, and the other end is fixed to another base section column limb. The base section tie bar is fixed between the base section column limb and the base section column limb, and the base section tie bar is arranged obliquely with respect to the direction of the base section column limb. The top of the base section column limb is provided with a base section positioning key groove, the upper side of the base section column limb is provided with a base section bolt sleeve, the bottom of the base section column limb is provided with a base section base plate, and the base section base plate is fixed to the foundation, so that the base section is fixed to the foundation.

[0006] The standard section includes a standard section column limb, a standard section tie bar, and a standard section cross beam. The standard section column limbs are fixed to the standard section column limbs by a standard section cross beam. One end of the standard section cross beam is fixed to the standard section column limb, and the other end is fixed to another standard section column limb. The standard section tie bar is fixed between the standard section column limbs and the standard section tie bar is arranged obliquely with respect to the direction of the standard section column limb. The top of the standard section column limb is provided with a standard section positioning key slot, and the bottom of the standard section column limb is provided with a standard section positioning key. The upper side of the standard section column limb is provided with a standard section upper bolt sleeve, and the lower side of the standard section column limb is provided with a standard section lower bolt sleeve, and the standard section lower bolt sleeve is passed through the standard section bolt.

[0007] The standard section is placed on the upper part of the base section, the standard section positioning key of the standard section is aligned with the base section positioning key slot of the base section, and the standard section positioning key is placed in the base section positioning key slot; the standard section bolt passes through the standard section lower bolt sleeve of the standard section and the base section bolt sleeve of the base section in sequence, and one end of the standard section bolt passing through the standard section lower bolt sleeve and the base section bolt sleeve is screwed with a standard section nut, so that the standard section is fixed on the base section;

[0008] The adjusting-section inner section comprises an adjusting-section inner section column limb, an adjusting-section inner section tie bar and an adjusting-section inner section cross beam, the adjusting-section inner section column limb and the adjusting-section inner section column limb are fixed by the adjusting-section inner section cross beam, one end of the adjusting-section inner section cross beam is fixed on the adjusting-section inner section column limb, and the other end is fixed on another adjusting-section inner section column limb; the adjusting-section inner section tie bar is fixed between the adjusting-section inner section column limb and the adjusting-section inner section column limb, and the adjusting-section inner section tie bar is arranged obliquely with respect to the direction of the adjusting-section inner section column limb; an adjusting-section inner section positioning key is provided at the bottom of the adjusting-section inner section column limb, an adjusting-section inner section bolt sleeve is provided on the lower side of the adjusting-section inner section column limb, and an adjusting-section inner section bolt sleeve is passed through the adjusting-section inner section bolt; a plurality of adjusting-section inner section height adjustment holes are evenly distributed on the side of the adjusting-section inner section column limb;

[0009] The adjusting section inner section is placed on the upper part of the standard section, the adjusting section inner section positioning key is aligned with the standard section positioning key slot at the top of the standard section, and the adjusting section inner section positioning key is placed in the standard section positioning key slot; the adjusting section inner section bolt passes through the adjusting section inner section bolt sleeve of the adjusting section inner section and the standard section upper bolt sleeve of the standard section in sequence, and one end of the adjusting section inner section bolt passing through the adjusting section inner section bolt sleeve and the standard section upper bolt sleeve is screwed with an adjusting section inner section nut, so that the adjusting section inner section is fixed on the standard section;

[0010] The outer section of the adjustment section includes an outer section column limb of the adjustment section, an outer section tie bar of the adjustment section, an outer section cross beam of the adjustment section, and a pad. The outer section column limb of the adjustment section is fixed to the outer section column limb of the adjustment section by an outer section cross beam of the adjustment section, one end of the outer section cross beam of the adjustment section is fixed to the outer section column limb of the adjustment section, and the other end is fixed to another outer section column limb of the adjustment section; the outer section tie bar of the adjustment section is fixed between the outer section column limb of the adjustment section and the outer section tie bar of the adjustment section is arranged obliquely to the direction of the outer section column limb of the adjustment section; a plurality of height adjustment holes of the outer section of the adjustment section are evenly distributed on the side surface of the outer section of the adjustment section; the pad is fixed to the top of the outer section of the adjustment section, and a plurality of jack fixing holes and a plurality of top support fixing holes are provided on the pad, and the inner sides of the plurality of jack fixing holes and the plurality of top support fixing holes are all provided with screw threads;

[0011] The outer section of the adjusting section is sleeved on the inner section of the adjusting section, and the outer section of the adjusting section is movable on the inner section of the adjusting section to adjust the lifting height; a plurality of height adjustment bolts are also provided, and the plurality of height adjustment bolts pass through the corresponding inner section height adjustment holes of the adjusting section on the inner section of the adjusting section and the outer section height adjustment holes of the adjusting section on the outer section of the adjusting section, and one end of the height adjustment bolt passing through the inner section height adjustment hole of the adjusting section and the height adjustment hole of the outer section of the adjusting section is screwed and tightened with a built-in height adjustment nut to fasten the outer section of the adjusting section, so that the outer section of the adjusting section is fixed on the inner section of the adjusting section;

[0012] The adjustable top support comprises a base tube and a ball bearing. A rotating nut is provided in the base tube, and the rotating nut is placed in the base tube. A base tube groove is provided on the inner wall of the base tube, and a rotating nut groove is provided on the outer wall of the rotating nut. The ball bearing is embedded between the base tube groove and the rotating nut groove to constrain the up and down displacement of the rotating nut, so that the rotating nut can only rotate in the base tube but cannot move up and down; a lifting screw is rotated in the rotating nut, and a U-shaped top support is fixed on the top of the lifting screw; a pillow block is supported on the U-shaped top support; rotating the rotating nut drives the lifting screw to move up and down in the rotating nut, thereby driving the U-shaped top support and the pillow block supported on the U-shaped top support to move up and down; an adjustable top support base plate is provided at the bottom of the base tube, and a plurality of adjustable top support fixing holes are provided on the adjustable top support base plate;

[0013] The adjustable top support is placed on the pad of the outer section of the adjusting section, and is also provided with a fixing bolt, which is screwed into the fixing hole of the adjustable top support and the fixing hole of the top support, so that the adjustable top support is fixed on the pad, and thus the adjustable top support is fixed to the top of the outer section of the adjusting section;

[0014] The unloading jack includes a jack and a jack base plate. There is a placement groove in the middle of the jack base plate. The jack is placed in the placement groove of the jack base plate, and the shape of the placement groove is consistent with the shape of the bottom of the jack; the jack base plate is provided with a plurality of jack fixing holes and jack fixing bolts, and the jack fixing bolts are tightened in the jack fixing holes and the jack fixing holes, so that the jack base plate is fixed to the pad; thereby, the unloading jack is fixed to the top of the outer section of the adjustment section.

[0015] The base section column limbs, base section tie bars, base section cross beams, standard section column limbs, standard section tie bars, standard section cross beams, adjustment section inner section column limbs, adjustment section inner section tie bars, adjustment section inner section cross beams, adjustment section outer section column limbs, adjustment section outer section tie bars, and adjustment section outer section cross beams are steel pipes, angle steels or channel steels.

[0016] A base section stiffening plate is fixed between the base section column limbs and the base section base plate, and a reliable connection between the base section column limbs and the base section base plate is ensured by the base section stiffening plate.

[0017] An adjusting-joint outer section adjoining plate is provided at the structural corner of the adjusting-joint outer section.

[0018] The base section base plate is provided with a base section fixing hole, on which a base section fixing bolt is screwed, and the base section fixing bolt passes through the base section fixing hole and is screwed and fixed to the foundation, so that the base section base plate is fixed to the foundation.

[0019] A force-adding hole is provided on the side of the rotating nut, and the rotating nut can be rotated by adding force in the force-adding hole.

[0020] An adjustable top support stiffening plate is provided between the base tube and the adjustable top support base plate, which is used for increasing the rigidity between the base tube and the adjustable top support base plate; the adjustable top support base plate is fixed to the bottom of the base tube, and the diameter of the adjustable top support base plate is larger than the outer diameter of the base tube.

[0021] A method for using a temporary support frame for installing an assembled lattice steel structure, characterized in that it comprises the following steps:

[0022] Step 1) Construction preparation: Before the installation of steel structure C, determine the plane layout and erection height of the temporary support frame according to the construction plan. The temporary support frame includes temporary support frame A and temporary support frame B, and there can be multiple temporary support frames. After on-site measurement and layout, select the appropriate temporary support frame foundation form and complete the foundation preparation work;

[0023] Step 2) Installation of the base section: According to the temporary support frame plan, hoist the base section to the designated location, and fix the base section to the foundation by passing the base section fixing bolts through the base section fixing holes; the base section fixing bolts should be anchor bolts or high-strength bolts according to the foundation form to ensure the reliability of the connection;

[0024] Step 3) Hoisting standard sections: Determine the number of standard sections required according to the height of the temporary support frame. During hoisting, use the hoisting device to hoist a standard section to 200~500mm above the positioning key slot of the installed base section, pause slightly, and slowly drop it after the swing is reduced until the standard section positioning key is fully inserted into the positioning key slot of the base section. Use the standard section bolt to pass through the lower bolt sleeve of the standard section and the base section bolt sleeve in turn, and tighten it with the standard section nut. After all sides are tightened, release the hoisting device to complete the installation of a standard section. If you need to continue to install the standard section, continue with step 3-1. If you do not need to continue to install the standard section, go directly to step 4).

[0025] Step 3-1) Use the lifting device to lift the new standard section to 200~500mm above the installed standard section, pause for a while, and slowly drop it after the swing is reduced, until the standard section positioning key of the upper standard section is completely inserted into the standard section positioning key slot of the lower standard section; use the standard section bolt to pass through the standard section lower bolt sleeve of the upper standard section and the standard section upper bolt sleeve of the lower standard section in turn, and tighten with the standard section nut; after all sides are tightened, release the lifting device to complete the installation of the new standard section;

[0026] If you need to continue installing the standard section, continue to repeat step 3-1); if you do not need to continue installing the standard section, go directly to step 4);

[0027] Step 4), hoisting the adjustment section: according to the erection height of the temporary support frame, determine the depth of the inner section of the adjustment section into the outer section of the adjustment section, which is used to preliminarily adjust the elevation of the entire support frame; before hoisting the adjustment section, complete the assembly of the inner section and the outer section of the adjustment section on the ground, use the height adjustment bolt to pass through the height adjustment hole of the outer section of the adjustment section and the height adjustment hole of the inner section of the adjustment section in turn, and tighten with the height adjustment nut; when hoisting, use the lifting device to lift the adjustment section to 200~500mm above the installed group section, pause slightly, and slowly drop it after the swing is reduced, until the positioning key of the inner section of the adjustment section is completely inserted into the positioning key slot of the standard section; use the inner section bolt of the adjustment section to pass through the bolt sleeve of the inner section of the adjustment section and the bolt sleeve on the standard section in turn, and tighten with the inner section nut of the adjustment section; after all sides are tightened, release the lifting device to complete the installation of the adjustment section;

[0028] Step 5) Install the adjustable top support: Arrange one or several adjustable top supports according to the structural form and elevation of the supported steel structure; Use fixing bolts to pass through the adjusting top support fixing holes and the top support fixing holes in sequence and fix them on the pad; Turn the rotating nut to raise and lower the pillow block to the specified elevation; Repeat the above steps to install the required adjustable top supports in sequence to complete the erection of the temporary support frame A;

[0029] Step 6), repeat steps 2) to 5) to complete the erection of temporary support frame B and other required temporary support frames;

[0030] Step 7) Installation of steel structure: Strictly follow the safety and quality regulations in the steel structure hoisting plan, stably hoist the steel structure C to the pillow blocks of each support frame, and adjust the lifting by turning the rotating nut to ensure the accurate installation elevation of the steel structure C; after hoisting in place, carry out the steel structure installation and docking operations;

[0031] Step 8) Support frame unloading: After the steel structure is installed, choose whether to use the jack unloading method according to the installed steel structure and the unloading plan; for steel structures with simple structures and small loads, the top support height can be lowered by turning the rotating nut to complete the unloading operation; when using a jack or other unloading device, use the jack fixing bolt to pass through the jack fixing hole and the jack fixing hole in sequence to fix the jack base plate to the pad; select a jack of appropriate range and place it on the jack base plate, lift the jack to contact the bottom end of the installed steel structure C, lower the top support height by turning the rotating nut, complete the support replacement, and then use the jack to achieve unloading operation;

[0032] Step 9) Support frame removal: After the support frame is unloaded, remove the adjustment top support and the unloading jack, and lift the adjustment section, standard section, and base section to the designated location in sequence;

[0033] Step 10), support frame turnover: according to the erection height of the temporary support frame, redetermine the number of standard sections, adjust the depth of the inner section into the outer section; according to the structural form and elevation of the supported steel structure, redetermine the number and height of the top support; re-erect the support frame according to step 2) and put it into use in the next construction section.

[0034] By applying force at the force hole, turn the rotating nut.

[0035] The present invention has a reasonable structure and an advanced and scientific method. Through the present invention, the shortcomings of the existing technology and devices are overcome, and a temporary support frame for the installation of an assembled lattice steel structure and a use method are provided, which saves construction space, has a short erection period, and a high reuse rate; the lattice-type sections are light in weight, high in bearing capacity, and convenient to hoist; each section can be flexibly assembled according to actual needs and is easy to install; through multiple height adjustment devices, the installation elevation of the steel structure is ensured, and the installation of complex steel structures with variable elevations can be met, and the unloading operation after the steel structure is installed is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the temporary support structure of the present invention;

[0037] Figure 2 It is a schematic diagram of the base section structure;

[0038] Figure 3 It is a schematic diagram of the standard section structure;

[0039] Figure 4 To adjust the schematic diagram of the section structure within the section;

[0040] Figure 5 To adjust the schematic diagram of the outer section structure;

[0041] Figure 6 Schematic diagram of adjusting the top support structure;

[0042] Figure 7 A schematic diagram of a partial cross section for adjusting the top support;

[0043] Figure 8 It is a schematic diagram of the structure of the jack for unloading;

[0044] Fig. 9 It is a schematic diagram of the method of using the present invention;

[0045] In the figure: 1 base section, 2 standard section, 3 adjustment section inner section, 4 adjustment section outer section, 5 adjustment top support, 6 unloading jack, 11 base section column limb, 12 base section tie bar, 13 base section positioning keyway, 14 base section bolt sleeve, 15 base section base plate, 16 base section stiffening plate, 17 base section fixing bolt, 18 base section fixing hole, 19 base section cross beam, 21 standard section column limb, 22 standard section tie bar, 23 standard section upper bolt sleeve, 24 standard section positioning keyway, 25 standard section positioning key, 26 standard section lower bolt sleeve, 27 standard section bolt, 28 standard section nut, 29 standard section cross beam, 31 adjustment section inner section column limb, 32 adjustment section inner section tie bar, 33 adjustment section inner section positioning key, 34 adjustment section inner section height adjustment hole, 35 Height adjustment bolt, 36 height adjustment nut, 37 adjustment section inner section bolt sleeve, 38 adjustment section inner section bolt, 39 adjustment section inner section nut, 40 adjustment section inner section cross beam, 41 adjustment section outer section column, 42 adjustment section outer section tie bar, 43 adjustment section outer section tie plate, 44 adjustment section outer section height adjustment hole, 45 pad, 46 jack fixing hole, 47 top support fixing hole, 48 adjustment section outer section cross beam, 51 pillow block, 52 U-shaped top support, 53 lifting screw, 54 rotating nut, 55 force hole, 56 ball, 57 base tube, 58 fixing bolt, 59 adjustment top support base plate, 510 adjustment top support fixing hole, 511 adjustment top support stiffening plate, 61 jack, 62 jack base plate, 63 jack fixing bolt, 64 jack fixing hole. DETAILED DESCRIPTION

[0046] The present invention will be further described below in conjunction with the accompanying drawings and the accompanying descriptions.

[0047] like Figure 1 As shown, a temporary support frame for the installation of assembled lattice steel structure consists of a base section 1, a standard section 2, an adjustment section inner section 3, an adjustment section outer section 4, an adjustment top support 5, and an unloading jack 6; the base section 1 reliably connects the support frame to the foundation; a number of standard sections 2 are combined into the main body of the support frame to meet the construction height requirements; the adjustment section inner section 3 and the adjustment section outer section 4 constitute the adjustment section for the height of the support frame, and perform preliminary adjustment on the height of the support frame; a number of adjustment top supports 5 provide support for the steel structure, and by changing the number and respective heights of the adjustment top supports 5, stable support of various forms of steel structures can be met; the unloading jack 6 is arranged in the unloading stage after the steel structure is installed to facilitate the unloading operation, and a suitable unloading device can be selected according to the situation of the installed steel structure.

[0048] like Figure 2As shown, the base section 1 includes a base section column limb 11, a base section tie bar 12, and a base section cross beam 19. The base section column limbs 11 and the base section column limbs 11 are fixed by the base section cross beam 19. One end of the base section cross beam 19 is fixed to the base section column limb 11, and the other end is fixed to another base section column limb 11; the base section tie bar 12 is fixed between the base section column limb 11 and the base section column limb 11, and the base section tie bar 12 is arranged obliquely with respect to the base section column limb 11. ; A base section positioning key groove 13 is provided at the top of the base section column limb 11, a base section bolt sleeve 14 is provided at the upper side of the base section column limb 11, and a base section base plate 15 is provided at the bottom of the base section column limb 11. The base section base plate 15 is fixed to the foundation, so that the base section 1 is fixed to the foundation; a base section stiffening plate 16 is fixed between the base section column limb 11 and the base section base plate 15, and the base section stiffening plate 16 is used to ensure that the base section column limb 11 and the base section base plate 15 are reliably connected. The base section column limb 11 and the base section tie bar 12 can be in various forms such as steel pipes, angle steels, channel steels, etc., and can be adjusted according to the overall stiffness requirements to ensure the safety and stability of the entire support frame; the base section positioning key slot 13 is located at the top of the column limb 11, which is used for alignment of the upper assembly section; the base section bolt sleeve 14 is located at the upper part of the base section column limb 11, which is used for connection and fixation with the upper assembly section; the base section base plate 15 is fixed to the bottom of the base section column limb 11, and a reliable connection is ensured by the base section stiffening plate 16; the base section fixing bolts 17 and the base section fixing holes 18 are used to fix the base section to the foundation.

[0049] like Figure 3 As shown, the standard section 2 includes a standard section column limb 21, a standard section tie bar 22, a standard section bolt sleeve 23, a standard section positioning keyway 24, a standard section positioning key 25, a standard section bolt sleeve 26, a standard section bolt 27, and a standard section nut 28; the standard section column limb 21 and the standard section tie bar 22 can be in various forms such as steel pipes, angle steels, channel steels, etc., and can be adjusted according to the overall stiffness requirements to ensure the safety and stability of the entire support frame; the standard section positioning keyway 24 and the standard section positioning key 25 are respectively located at the top and bottom of the standard section column limb 21, and the sizes of the two match each other, which are used for alignment of the upper and lower sections; the standard section bolt sleeve 26 is located at the upper and lower parts of the standard section column limb 21, and the standard section bolt 27 passes through the standard section bolt sleeve 26 and is tightened by the standard section nut 28, which is used for connection and fixation of the upper and lower sections.

[0050] The standard section 2 includes a standard section column limb 21, a standard section tie bar 22, and a standard section cross beam 29. The standard section column limbs 21 and the standard section column limbs 21 are fixed to each other through the standard section cross beam 29. One end of the standard section cross beam 29 is fixed to the standard section column limb 21, and the other end is fixed to another standard section column limb 21. The standard section tie bar 22 is fixed between the standard section column limb 21 and the standard section column limb 21, and the standard section tie bar 22 is arranged obliquely with respect to the direction of the standard section column limb 21. The top of the standard section column limb 21 is provided with a standard section positioning key slot 24, and the bottom of the standard section column limb 21 is provided with a standard section positioning key 25. The upper side of the standard section column limb 21 is provided with a standard section upper bolt sleeve 23, and the lower side of the standard section column limb 21 is provided with a standard section lower bolt sleeve 26, and the standard section lower bolt sleeve 26 is penetrated with a standard section bolt 27.

[0051] The standard section 2 is placed on the upper part of the base section 1, the standard section positioning key 25 of the standard section 2 is aligned with the base section positioning key slot 13 of the base section 1, and the standard section positioning key 25 is placed in the base section positioning key slot 13; the standard section bolt 27 passes through the standard section lower bolt sleeve 26 of the standard section 2 and the base section bolt sleeve 14 of the base section 1 in sequence, and the standard section bolt 27 passes through the standard section lower bolt sleeve 26 and the base section bolt sleeve 14. One end is screwed with a standard section nut 28, so that the standard section 2 is fixed on the base section 1.

[0052] like Figure 4 As shown, the adjusting section inner section 3 includes an adjusting section inner section column limb 31, an adjusting section inner section fixing strip 32, an adjusting section inner section positioning key 33, an adjusting section inner section height adjustment hole 34, an adjusting section inner section height adjustment bolt 35, an adjusting section inner section height adjustment nut 36, an adjusting section inner section bolt sleeve 37, an adjusting section inner section bolt 38, and an adjusting section inner section nut 39; the adjusting section inner section column limb 31 and the adjusting section inner section fixing strip 32 can be in various forms such as steel pipes, angle steels, channel steels, etc., and can be adjusted according to the overall stiffness requirements to ensure the safety and stability of the entire support frame; the adjusting section inner section positioning key 33 is located at the adjusting section inner section column limb The bottom of 31 is used for aligning the upper and lower assembly sections; a number of adjusting-section inner section height adjustment holes 34 are evenly distributed on the side of the adjusting-section inner section column limb 31, a number of height adjustment bolts 35 pass through the adjusting-section inner section height adjustment holes 34 and the adjusting-section outer section height adjustment holes 44 in the adjusting-section outer section 4, and are fastened by the height adjustment nuts 36 for further adjustment of the support frame height; the adjusting-section inner section bolt sleeve 37 is located at the lower part of the adjusting-section inner section column limb 31, the adjusting-section inner section bolt 38 passes through the adjusting-section inner section bolt sleeve 37, and is fastened by the adjusting-section inner section nut 39 for connection and fixation with the lower assembly section.

[0053] The adjusting-section inner section 3 comprises an adjusting-section inner section column limb 31, an adjusting-section inner section connecting strip 32, and an adjusting-section inner section cross beam 40. The adjusting-section inner section column limb 31 is fixed to the adjusting-section inner section column limb 31 by means of the adjusting-section inner section cross beam 40. One end of the adjusting-section inner section cross beam 40 is fixed to the adjusting-section inner section column limb 31, and the other end is fixed to another adjusting-section inner section column limb 31. The adjusting-section inner section connecting strip 32 is fixed between the adjusting-section inner section column limb 31 and the adjusting-section inner section column limb 31, and the adjusting-section inner section connecting strip 32 is arranged obliquely to the direction of the adjusting-section inner section column limb 31. An adjusting-section inner section positioning key 33 is provided at the bottom of the adjusting-section inner section column limb 31, and an adjusting-section inner section bolt sleeve 37 is provided on the lower side of the adjusting-section inner section column limb 31, and an adjusting-section inner section bolt 38 is passed through the adjusting-section inner section bolt sleeve 37. A plurality of adjusting-section inner section height adjustment holes 34 are evenly distributed on the side of the adjusting-section inner section column limb 31.

[0054] The adjusting-section inner section 3 is placed on the upper part of the standard section 2, the adjusting-section inner section positioning key 33 is aligned with the standard section positioning key slot 24 at the top of the standard section 2, and the adjusting-section inner section positioning key 33 is placed in the standard section positioning key slot 24; the adjusting-section inner section bolt 38 passes through the adjusting-section inner section bolt sleeve 37 of the adjusting-section inner section 3 and the standard section upper bolt sleeve 23 of the standard section 2 in sequence, and the adjusting-section inner section bolt 38 passes through the adjusting-section inner section bolt sleeve 37 and the standard section upper bolt sleeve 23 at one end thereof, and is screwed with an adjusting-section inner section nut 39, so that the adjusting-section inner section 3 is fixed on the standard section 2.

[0055] like Figure 5 As shown, the adjusting section outer section 4 includes an adjusting section outer section column limb 41, an adjusting section outer section tie bar 42, an adjusting section outer section tie plate 43, an adjusting section outer section height adjustment hole 44, a pad 45, a jack fixing hole 46, and a top support fixing hole 47; the adjusting section outer section column limb 41 and the adjusting section outer section tie bar 42 can be in various forms such as steel pipes, angle steels, channel steels, etc., and are adjusted according to the overall stiffness requirements to ensure the safety and stability of the entire support frame; the adjusting section outer section tie plate 43 is located at the structural corner, which is used to strengthen the structural stiffness of the group section, and is arranged and adjusted according to design requirements; a number of adjusting section outer section height adjustment holes 44 are evenly distributed on the side of the adjusting section outer section column limb 41, which are used for further adjustment of the support frame height; a number of jack fixing holes 46 and a number of top support fixing holes 47 are located on the pad 45, and there are screw threads on the inner side of the holes. The pad 45 is fixed to the top of the adjusting section outer section 4, which is used to connect and fix the adjusting top support 5 and the unloading jack 6.

[0056] The adjusting section outer section 4 is also provided with an adjusting section outer section cross beam 48, and the adjusting section outer section column limb 41 and the adjusting section outer section column limb 41 are fixed by the adjusting section outer section cross beam 48, and one end of the adjusting section outer section cross beam 48 is fixed on the adjusting section outer section column limb 41, and the other end is fixed on another adjusting section outer section column limb 41;

[0057] like Figure 6 As shown, the adjustable top support 5 includes a base tube 57 and a ball 56. A rotating nut 54 is provided in the base tube 57. The rotating nut 54 is placed in the base tube 57. The inner wall of the base tube 57 is provided with a base tube groove. The outer wall of the rotating nut 54 is provided with a rotating nut groove. The ball 56 is embedded between the base tube groove and the rotating nut groove to restrict the up and down displacement of the rotating nut 54, so that the rotating nut 54 can only rotate in the base tube 57 and cannot move up and down; a lifting screw 53 is screwed in the rotating nut 54, and a U-shaped top support 52 is fixed on the top of the lifting screw 53; a pillow block 51 is supported on the U-shaped top support 52; the rotating The rotating nut 54 drives the lifting screw 53 to move up and down in the rotating nut 54, thereby driving the U-shaped top support 52 and the pillow block 51 supported on the U-shaped top support 52 to move up and down; the bottom of the base tube 57 is provided with an adjustable top support base plate 59, and the adjustable top support base plate 59 is provided with a plurality of adjustable top support fixing holes 510; the adjustable top support 5 is placed on the pad 45 of the outer section 4 of the adjustment section, and is also provided with a fixing bolt 58, which is tightened in the adjustable top support fixing hole 510 and the top support fixing hole 47, so that the adjustable top support 5 is fixed on the pad 45, and thus the adjustable top support 5 is fixed to the top of the outer section 4 of the adjustment section. A force hole 55 is provided on the side of the rotating nut 54, and the rotating nut 54 is rotated by applying force in the force hole 55. An adjusting top support stiffening plate 511 is provided between the base tube 57 and the adjusting top support base plate 59, which is used for increasing the rigidity between the base tube 57 and the adjusting top support base plate 59; the adjusting top support base plate 59 is fixed to the bottom of the base tube 57, and the diameter of the adjusting top support base plate 59 is larger than the outer diameter of the base tube 57.

[0058] like Figure 8 As shown, the unloading jack includes a jack 61, a base plate 62, fixing bolts 63, and fixing holes 64; the unloading jack 6 is used for unloading operations during steel structure installation, and it can be selected whether to use it or replace various unloading devices according to the load conditions and unloading scheme; there is a groove in the middle of the base 62 for placing the jack 61, and the shape is consistent with the bottom shape of the jack 61; the fixing bolts 63 pass through the fixing holes 64 and the jack fixing holes 46 to fix the unloading jack 6 to the pad 45.

[0059] The unloading jack 6 includes a jack 61 and a jack base plate 62. There is a placement groove in the middle of the jack base plate 62. The jack 61 is placed in the placement groove of the jack base plate 62, and the shape of the placement groove is consistent with the bottom shape of the jack 61; a plurality of jack fixing holes 64 are provided on the jack base plate 62, and a jack fixing bolt 63 is also provided. The jack fixing bolt 63 is tightened in the jack fixing hole 64 and the jack fixing hole 46, so that the jack base plate 62 is fixed on the pad 45; thereby, the unloading jack 6 is fixed to the top of the outer section 4 of the adjustment section.

[0060] A method for using a temporary support frame for installing an assembled lattice steel structure comprises the following steps:

[0061] Step 1) Construction preparation: Before the installation of steel structure C, determine the plane layout and erection height of the temporary support frame according to the construction plan. The temporary support frame includes temporary support frame A and temporary support frame B. After on-site measurement and layout, select the appropriate temporary support frame foundation form and complete the foundation preparation work;

[0062] Step 2), installation of base section 1: according to the temporary support frame plane layout plan, hoist base section 1 to the designated position, pass base section fixing bolts 17 through base section fixing holes 18, and fix base section 1 to the foundation; base section fixing bolts 17 are selected from anchor bolts or high-strength bolts according to the foundation form to ensure the reliability of the connection;

[0063] Step 3) Hoisting standard section 2: Determine the number of standard sections 2 required according to the height of the temporary support frame. During hoisting, use the hoist to hoist one standard section 2 to 200~500mm above the installed base section positioning key slot 13, pause slightly, and slowly drop it after the swing is reduced until the standard section positioning key 25 is completely inserted into the base section positioning key slot 13. Use the standard section bolt 27 to pass through the standard section lower bolt sleeve 26 and the base section bolt sleeve 14 in turn, and tighten it with the standard section nut 28. After all sides are tightened, release the hoist to complete the installation of one standard section 2. When it is necessary to continue to install the standard section 2, continue with step 3-1). When it is not necessary to continue to install the standard section 2), go directly to step 4).

[0064] Step 3-1), lift the new standard section 2 to 200~500mm above the installed standard section 2 by the lifting device, pause for a while, and slowly drop it after the swing is reduced, until the standard section positioning key 25 of the upper standard section 2 is completely inserted into the standard section positioning key slot 24 of the lower standard section 2; use the standard section bolt 27 to pass through the standard section lower bolt sleeve 26 of the upper standard section 2 and the standard section upper bolt sleeve 23 of the lower standard section 2 in sequence, and tighten it with the standard section nut 28; after all sides are tightened, release the lifting device to complete the installation of the new standard section 2;

[0065] If you need to continue to install standard section 2, continue to repeat step 3-1); if you do not need to continue to install standard section 2, go directly to step 4);

[0066] Step 4), hoisting the adjustment section: according to the erection height of the temporary support frame, determine the depth of the inner section 3 of the adjustment section inserted into the outer section 4 of the adjustment section, which is used to preliminarily adjust the elevation of the entire support frame; before hoisting the adjustment section, complete the assembly of the inner section 3 and the outer section 4 of the adjustment section on the ground, use the height adjustment bolt 35 to pass through the height adjustment hole 44 of the outer section of the adjustment section and the height adjustment hole 34 of the inner section of the adjustment section in turn, and tighten with the height adjustment nut 36; when hoisting, use the lifting device to lift the adjustment section to 200~500mm above the installed group section, pause slightly, and slowly fall after the swing is reduced, until the positioning key 33 of the inner section of the adjustment section is completely inserted into the positioning key slot 24 of the standard section; use the inner section bolt 38 of the adjustment section to pass through the inner section bolt sleeve 37 of the adjustment section and the bolt sleeve 23 on the standard section in turn, and tighten with the inner section nut 39 of the adjustment section; after all sides are tightened, release the lifting device to complete the installation of the adjustment section;

[0067] Step 5), install the adjustable top support: arrange one or more adjustable top supports 5 according to the structural form and elevation of the supported steel structure; use the fixing bolts 58 to pass through the adjustable top support fixing holes 510 and the top support fixing holes 47 in sequence to fix them on the pad 45; turn the rotating nut 54 to raise and lower the pillow block 51 to the specified elevation; repeat the above steps, install the required adjustable top supports 5 in sequence, and complete the erection of the temporary support frame A;

[0068] Step 6), repeat steps 2) to 5) to complete the erection of temporary support frame B and other required temporary support frames;

[0069] Step 7) Installation of steel structure: Strictly follow the safety and quality requirements of the steel structure hoisting plan, stably hoist the steel structure C onto the pillow blocks 51 of each support frame, apply force at the force holes 55, turn the rotating nut 54 to adjust the lifting and lowering, and ensure that the installation elevation of the steel structure C is accurate; after hoisting in place, perform steel structure installation and docking operations;

[0070] Step 8) Support frame unloading: After the steel structure is installed, choose whether to use the jack unloading method according to the installed steel structure and the unloading plan; for steel structures with simple structures and small loads, the unloading operation can be completed by applying force to the force hole 55, rotating the rotating nut 54, and lowering the top support height; when using a jack or other unloading device, use the jack fixing bolt 63 to pass through the jack fixing hole 64 and the jack fixing hole 46 in sequence to fix the jack base plate 62 to the pad 45; select a jack 61 of appropriate range and place it on the jack base plate 62, lift the jack 61 to contact the bottom end of the installed steel structure C, and lower the top support height by rotating the rotating nut 54 to complete the support replacement, and then use the jack 61 to achieve the unloading operation;

[0071] Step 9) Support frame removal: After the support frame is unloaded, remove the adjustment top support 5 and the unloading jack 6, and lift the adjustment section, standard section 2, and base section 1 to the designated location in sequence; before lifting, loosen the fasteners between the current section and the next section, and it is strictly forbidden to loosen the fasteners between all the sections at the same time;

[0072] Step 10), support frame turnover: according to the erection height of the temporary support frame, redetermine the number of standard sections 2, adjust the depth of the inner section 3 into the outer section 4; according to the structural form and elevation of the supported steel structure, redetermine the number and height of the top support 5; re-erect the support frame according to step 2) and put it into use in the next construction section.

Claims

1. A temporary support frame for installing an assembled lattice steel structure, characterized by: It includes a base section (1), a standard section (2), an adjustment section inner section (3), an adjustment section outer section (4), an adjustment top support (5), and a jack for unloading (6); The base section (1) comprises a base section column limb (11), a base section tie bar (12), and a base section cross beam (19); the base section column limbs (11) are fixed to each other via the base section cross beam (19); one end of the base section cross beam (19) is fixed to the base section column limb (11), and the other end is fixed to another base section column limb (11); the base section tie bar (12) is fixed to the base section column limb (11) and the base section cross beam (19); The base section is disposed between the base section column limbs (11), and the base section tie bars (12) are arranged obliquely in the direction of the base section column limbs (11); the top of the base section column limb (11) is provided with a base section positioning key groove (13), the upper side of the base section column limb (11) is provided with a base section bolt sleeve (14), the bottom of the base section column limb (11) is provided with a base section base plate (15), and the base section base plate (15) is fixed to the foundation, so that the base section (1) is fixed to the foundation; The standard section (2) comprises a standard section column limb (21), a standard section lacing bar (22), and a standard section cross beam (29); the standard section column limbs (21) are fixed to each other via the standard section cross beam (29); one end of the standard section cross beam (29) is fixed to the standard section column limb (21), and the other end is fixed to another standard section column limb (21); the standard section lacing bar (22) is fixed between the standard section column limbs (21) and the standard section column limbs (21); The standard section baluster (22) is arranged obliquely with respect to the direction of the standard section column limb (21); the top of the standard section column limb (21) is provided with a standard section positioning keyway (24), and the bottom of the standard section column limb (21) is provided with a standard section positioning key (25); the upper side of the standard section column limb (21) is provided with a standard section upper bolt sleeve (23), and the lower side of the standard section column limb (21) is provided with a standard section lower bolt sleeve (26), and a standard section bolt (27) is inserted into the standard section lower bolt sleeve (26); The standard section (2) is placed on the upper part of the base section (1), the standard section positioning key (25) of the standard section (2) is aligned with the base section positioning key slot (13) of the base section (1), and the standard section positioning key (25) is placed in the base section positioning key slot (13); the standard section bolt (27) passes through the standard section lower bolt sleeve (26) of the standard section (2) and the base section bolt sleeve (14) of the base section (1) in sequence, and one end of the standard section bolt (27) passing through the standard section lower bolt sleeve (26) and the base section bolt sleeve (14) is screwed with a standard section nut (28), so that the standard section (2) is fixed on the base section (1); The adjusting section inner section (3) comprises an adjusting section inner section column limb (31), an adjusting section inner section embellishment bar (32), and an adjusting section inner section cross beam (40); the adjusting section inner section column limb (31) and the adjusting section inner section column limb (31) are fixed via the adjusting section inner section cross beam (40); one end of the adjusting section inner section cross beam (40) is fixed to the adjusting section inner section column limb (31), and the other end is fixed to another adjusting section inner section column limb (31); the adjusting section inner section embellishment bar (32) is fixed to the adjusting section inner section column limb (31) and the adjusting section inner section column limb (31); Between the whole section inner section column limbs (31), the adjustment section inner section trimming strip (32) is arranged obliquely with respect to the direction of the adjustment section inner section column limb (31); the bottom of the adjustment section inner section column limb (31) is provided with an adjustment section inner section positioning key (33), the lower side of the adjustment section inner section column limb (31) is provided with an adjustment section inner section bolt sleeve (37), and the adjustment section inner section bolt sleeve (37) is penetrated with an adjustment section inner section bolt (38); a plurality of adjustment section inner section height adjustment holes (34) are evenly distributed on the side of the adjustment section inner section column limb (31); The adjusting-joint inner section (3) is placed on the upper part of the standard section (2); the adjusting-joint inner section positioning key (33) is aligned with the standard section positioning key slot (24) at the top of the standard section (2); the adjusting-joint inner section positioning key (33) is placed in the standard section positioning key slot (24); the adjusting-joint inner section bolt (38) passes through the adjusting-joint inner section bolt sleeve (37) of the adjusting-joint inner section (3) and the standard section upper bolt sleeve (23) of the standard section (2) in sequence; and one end of the adjusting-joint inner section bolt (38) passing through the adjusting-joint inner section bolt sleeve (37) and the standard section upper bolt sleeve (23) is screwed with an adjusting-joint inner section nut (39), so that the adjusting-joint inner section (3) is fixed to the standard section (2); The adjusting section outer section (4) comprises an adjusting section outer section column limb (41), an adjusting section outer section lacing bar (42), an adjusting section outer section cross beam (48), and a pad (45); the adjusting section outer section column limb (41) is fixed to the adjusting section outer section column limb (41) via the adjusting section outer section cross beam (48); one end of the adjusting section outer section cross beam (48) is fixed to the adjusting section outer section column limb (41), and the other end is fixed to another adjusting section outer section column limb (41); the adjusting section outer section lacing bar (42) is fixed to the adjusting section outer section column limb (41); 1) between the outer section column limb (41) of the adjusting section, and the outer section lacing strip (42) of the adjusting section is arranged obliquely with respect to the direction of the outer section column limb (41) of the adjusting section; a plurality of outer section height adjustment holes (44) of the adjusting section are evenly distributed on the side of the outer section column limb (41); the pad (45) is fixed to the top of the outer section (4) of the adjusting section, and a plurality of jack fixing holes (46) and a plurality of top support fixing holes (47) are provided on the pad (45), and the inner sides of the plurality of jack fixing holes (46) and the plurality of top support fixing holes (47) are all provided with screw threads; The outer section (4) of the adjusting section is sleeved on the inner section (3) of the adjusting section, and the outer section (4) of the adjusting section is movable on the inner section (3) of the adjusting section to adjust the lifting height; a plurality of height adjustment bolts (35) are also provided, and the plurality of height adjustment bolts (35) pass through the corresponding inner section height adjustment holes (34) of the adjusting section on the inner section (3) and the outer section height adjustment holes (44) of the adjusting section on the outer section (4), and the end of the height adjustment bolt (35) passing through the inner section height adjustment holes (34) of the adjusting section and the outer section height adjustment holes (44) of the adjusting section is screwed and fastened with a built-in height adjustment nut (36), so that the outer section (4) of the adjusting section is fixed on the inner section (3) of the adjusting section; The adjustable top support (5) comprises a base tube (57) and a ball bearing (56). A rotating nut (54) is arranged inside the base tube (57). The rotating nut (54) is placed inside the base tube (57). The inner wall of the base tube (57) is provided with a base tube groove. The outer wall of the rotating nut (54) is provided with a rotating nut groove. The ball bearing (56) is embedded between the base tube groove and the rotating nut groove to restrict the upward and downward displacement of the rotating nut (54), so that the rotating nut (54) can only rotate inside the base tube (57) but cannot move upward and downward. A lifting screw rod (53) is rotated, and a U-shaped top support (52) is fixed on the top of the lifting screw rod (53); a pillow block (51) is supported on the U-shaped top support (52); the rotating nut (54) is rotated to drive the lifting screw rod (53) to move up and down in the rotating nut (54), thereby driving the U-shaped top support (52) and the pillow block (51) supported on the U-shaped top support (52) to move up and down; the bottom of the base tube (57) is provided with an adjustable top support base plate (59), and the adjustable top support base plate (59) is provided with a plurality of adjustable top support fixing holes (510); The adjustable top support (5) is placed on the backing plate (45) of the outer section (4) of the adjusting section, and is further provided with a fixing bolt (58), the fixing bolt (58) being screwed into the adjusting top support fixing hole (510) and the top support fixing hole (47), so that the adjusting top support (5) is fixed on the backing plate (45), thereby the adjusting top support (5) is fixed to the top of the outer section (4) of the adjusting section; The unloading jack (6) comprises a jack (61) and a jack base plate (62). The jack base plate (62) has a placement groove in the middle. The jack (61) is placed in the placement groove of the jack base plate (62), and the shape of the placement groove is consistent with the shape of the bottom of the jack (61). The jack base plate (62) is provided with a plurality of jack fixing holes (64) and a jack fixing bolt (63). The jack fixing bolt (63) is screwed into the jack fixing hole (64) and the jack fixing hole (46), so that the jack base plate (62) is fixed to the pad (45); thereby, the unloading jack (6) is fixed to the top of the outer section (4) of the adjustment section.

2. The temporary support frame for installing an assembled lattice steel structure according to claim 1 is characterized by: The base section column limbs (11), base section tie bars (12), base section cross beams (19), standard section column limbs (21), standard section tie bars (22), standard section cross beams (29), adjustment section inner section column limbs (31), adjustment section inner section tie bars (32), adjustment section inner section cross beams (40), adjustment section outer section column limbs (41), adjustment section outer section tie bars (42), and adjustment section outer section cross beams (48) are steel pipes, angle steels, or channel steels.

3. The temporary support frame for installing an assembled lattice steel structure according to claim 1 is characterized by: A base section stiffening plate (16) is fixed between the base section column limb (11) and the base section base plate (15), and the base section stiffening plate (16) ensures that the base section column limb (11) and the base section base plate (15) are reliably connected.

4. The temporary support frame for installing an assembled lattice steel structure according to claim 1 is characterized by: An adjusting-joint outer-joint decorative plate (43) is provided at a structural corner of the adjusting-joint outer-joint (4).

5. The temporary support frame for installing an assembled lattice steel structure according to claim 1 is characterized by: The base section base plate (15) is provided with a base section fixing hole (18), and a base section fixing bolt (17) is screwed into the base section fixing hole (18). The base section fixing bolt (17) passes through the base section fixing hole (18) and is screwed and fixed to the foundation, so that the base section base plate (15) is fixed to the foundation.

6. The temporary support frame for installing an assembled lattice steel structure according to claim 1 is characterized by: A force-adding hole (55) is provided on the side of the rotating nut (54), and the rotating nut (54) is rotated by applying force to the force-adding hole (55).

7. The temporary support frame for installing an assembled lattice steel structure according to claim 1 is characterized by: An adjustable top support stiffening plate (511) is provided between the base tube (57) and the adjustable top support base plate (59) for increasing the rigidity between the base tube (57) and the adjustable top support base plate (59); the adjustable top support base plate (59) is fixed to the bottom of the base tube (57); and the diameter of the adjustable top support base plate (59) is greater than the outer diameter of the base tube (57).

8. A method for using a temporary support frame for installing an assembled lattice steel structure, characterized by: The following steps are involved: Step 1) Construction preparation: Before the installation of steel structure C, determine the plane layout and erection height of the temporary support frame according to the construction plan. The temporary support frame includes temporary support frame A and temporary support frame B, and there can be multiple temporary support frames. After on-site measurement and layout, select the appropriate temporary support frame foundation form and complete the foundation preparation work; Step 2) Installation of the base section: According to the temporary support frame plan, hoist the base section (1) to the designated location, and pass the base section fixing bolts (17) through the base section fixing holes (18) to fix the base section (1) to the foundation; the base section fixing bolts (17) are selected from anchor bolts or high-strength bolts according to the foundation form to ensure the reliability of the connection; Step 3), hoisting the standard section (2): determine the number of standard sections (2) required according to the height of the temporary support frame; during hoisting, use the hoisting device to hoist one standard section (2) to 200~500mm above the installed base section positioning key slot (13), pause slightly, and slowly drop it after the swing is reduced until the standard section positioning key (25) is completely inserted into the base section positioning key slot (13); use the standard section bolt (27) to pass through the standard section lower bolt sleeve (26) and the base section bolt sleeve (14) in turn, and tighten it with the standard section nut (28); after all sides are tightened, release the hoisting device to complete the installation of one standard section (2); when it is necessary to continue to install the standard section (2), continue with step 3-1); when it is not necessary to continue to install the standard section (2), directly go to step 4); Step 3-1) Use the lifting device to lift the new standard section (2) to 200~500mm above the installed standard section (2), pause for a while, and slowly lower it after the swing decreases, until the standard section positioning key (25) of the upper standard section (2) is completely inserted into the standard section positioning key slot (24) of the lower standard section (2); use the standard section bolt (27) to pass through the standard section lower bolt sleeve (26) of the upper standard section (2) and the standard section upper bolt sleeve (23) of the lower standard section (2) in sequence, and tighten with the standard section nut (28); after all sides are tightened, release the lifting device to complete the installation of the new standard section (2); If the standard section (2) needs to be installed, continue to repeat step 3-1. If the standard section (2) does not need to be installed, go directly to step 4. Step 4), hoisting the adjustment section: according to the erection height of the temporary support frame, determine the depth of the inner section (3) of the adjustment section inserted into the outer section (4) of the adjustment section, which is used to preliminarily adjust the elevation of the entire support frame; before hoisting the adjustment section, complete the assembly of the inner section (3) and the outer section (4) of the adjustment section on the ground, use the height adjustment bolt (35) to pass through the height adjustment hole (44) of the outer section of the adjustment section and the height adjustment hole (34) of the inner section of the adjustment section in turn, and tighten with the height adjustment nut (36); during hoisting , lift the adjustment section to 200~500mm above the installed assembly section by the lifting device, pause for a while, and slowly drop it after the swing is reduced, until the adjustment section inner section positioning key (33) is completely inserted into the standard section positioning key slot (24); use the adjustment section inner section bolt (38) to pass through the adjustment section inner section bolt sleeve (37) and the standard section upper bolt sleeve (23) in turn, and tighten it with the adjustment section inner section nut (39); after all sides are tightened, release the lifting device to complete the installation of the adjustment section; Step 5), install the adjustable top support: according to the structural form and elevation of the supported steel structure, arrange one or more adjustable top supports (5); use the fixing bolts (58) to pass through the adjustable top support fixing holes (510) and the top support fixing holes (47) in sequence to fix them on the pad (45); turn the rotating nut (54) to raise and lower the pillow block (51) to the specified elevation; repeat the above steps to install the required adjustable top supports (5) in sequence to complete the erection of the temporary support frame A; Step 6), repeat steps 2) to 5) to complete the erection of temporary support frame B and other required temporary support frames; Step 7), steel structure installation: strictly follow the safety and quality regulations in the steel structure lifting plan, stably lift the steel structure C onto the pillow blocks (51) of each support frame, and adjust the lifting by rotating the rotating nut (54) to ensure that the installation elevation of the steel structure C is accurate; after lifting in place, perform steel structure installation and docking operations; Step 8) Unloading of the support frame: After the steel structure is installed, choose whether to use a jack to unload according to the installed steel structure and the unloading plan. For a steel structure with a simple structure and a small load, the top support height is lowered by rotating the rotating nut (54) to complete the unloading operation. When using a jack or other unloading device, use the jack fixing bolt (63) to pass through the jack fixing hole (64) and the jack fixing hole (46) in sequence to fix the jack base plate (62) to the pad (45). Select a jack (61) of a suitable range and place it on the jack base plate (62). Lift the jack (61) until it contacts the bottom end of the installed steel structure C. By rotating the rotating nut (54), the top support height is lowered to complete the support replacement, and then the unloading operation is completed by the jack (61). Step 9), support frame removal: After the support frame is unloaded, remove the adjustment top support (5) and the unloading jack (6), and lift the adjustment section, standard section (2), and base section (1) to the designated location in sequence; Step 10), support frame turnover: according to the erection height of the temporary support frame, re-determine the number of standard sections (2), adjust the depth of the inner section (3) into the outer section (4); according to the structural form and elevation of the supported steel structure, re-determine the number and height of the top support (5); re-erect the support frame according to step 2) and put it into use in the next construction section.

9. The method for using a temporary support frame for installing an assembled lattice steel structure according to claim 8, characterized in that: In step 7), force is applied to the force hole (55) to rotate the rotating nut (54).

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