Large-span special-shaped double-layer upright quadrangular pyramid grid roof

Abstract

The utility model relates to a large-span special-shaped double-layer upright quadrangular pyramid net rack roof, and researches and develops a large-span special-shaped double-layer upright quadrangular pyramid net rack roof structure, a large-span special-shaped roof supporting column beam system, a net rack roof sectional assembly adjustable jig frame structure and a special-shaped roof auxiliary mounting bracket auxiliary falling position adjusting device. The double-layer upright quadrangular pyramid net rack structure is adopted, the overall stability and the bearing capacity are extremely high, the influence of natural disasters such as strong wind and earthquakes can be effectively resisted, the safety of buildings is ensured, and good technical economic and social benefits can be obtained when the double-layer upright quadrangular pyramid net rack structure is applied to actual engineering.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering especially to a large-span special-shaped double-layer erect four-cornered pyramid net rack roof. BACKGROUND

[0002] With the continuous development of building industry in China, the space steel net rack structure has been widely applied in building engineering in China. People are constantly seeking beautiful and unique modeling while pursuing practicality, and the space steel net rack just provides the convenience in this aspect. Large-span steel structures are increasingly applied in real life, such as large gymnasiums, theaters and the like. However, there are many problems in the construction process of large-span special-shaped net rack roof unit processing, support system selection and installation positioning, such as low efficiency and difficult quality control.

[0003] In summary, at present, for the construction of large-span special-shaped double-layer erect four-cornered pyramid net rack roof, it is very important to seek a large-span special-shaped double-layer erect four-cornered pyramid net rack roof with fast construction speed, simple operation and reliable high construction quality. SUMMARY

[0004] The utility model discloses a large-span special-shaped double-layer erect four-cornered pyramid net rack roof which overcomes the defects in the prior art.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme: a large-span special-shaped double-layer erect four-cornered pyramid net rack roof comprises a large-span special-shaped double-layer erect four-cornered pyramid net rack roof structure, a large-span special-shaped roof support column beam system, a net rack roof section assembly adjustable jig structure and a special-shaped roof auxiliary installation support auxiliary positioning adjustment device.

[0006] The large-span special-shaped double-layer erect four-cornered pyramid net rack roof structure is composed of a plurality of four-cornered pyramid net rack roof units, the four-cornered pyramid net rack roof units are processed through the assembly adjustable jig, the ordinary welded ball and the crown-cut welded ball are respectively placed on the adjustable ordinary welded ball bracket and the adjustable crown-cut welded ball bracket, and the lower chord, the inclined web member and the upper chord are welded.

[0007] The large-span special-shaped roof support column beam system comprises a steel column, a welded box beam and a square tube cross beam, the upper part of the steel column is provided with a fixed ball hinge support, the steel column is processed and manufactured by a welded box column, adopts two forms of vertical steel pipe column and inclined steel pipe column, the top of the steel column is pulled together by the welded box beam, and the square tube cross beams are arranged at other positions of the steel column from bottom to top.

[0008] The adjustable frame structure of the segmented assembly of the net rack roof comprises square steel, adjustable ordinary welded ball bracket, assembly adjustable frame, connecting rod, sleeve joint, solid joint, adjustable crown cutting welded ball bracket and pin bolt; the assembly adjustable frame is provided with sliding groove and connecting hole, and the two sides of the assembly adjustable frame are provided with sleeve joint and solid joint, and the sleeve joint and the solid joint are provided with connecting hole; the adjustable ordinary welded ball bracket is made of 1 / 3 hollow iron ball and threaded rod and is installed on the sliding groove position, can be moved according to the design distance of the ordinary welded ball, and the height can be adjusted according to the distance between the ordinary welded ball and the crown cutting welded ball; a plurality of assembly adjustable frames are longitudinally connected through the solid joint inserted into the sleeve joint and provided with pin bolt in the connecting hole to form a whole; the assembly adjustable frames are transversely connected through the connecting rod to form a whole; the adjustable crown cutting welded ball bracket is installed on the longitudinal connecting position of the plurality of assembly adjustable frames through the split steel plate, and the adjustable crown cutting welded ball bracket has the same structure as the adjustable ordinary welded ball bracket;

[0009] The auxiliary installation support auxiliary positioning adjustment device of the special-shaped roof utilizes the assembly adjustable frame unit to form a support base and is connected with the embedded part of the concrete floor, the support unit is installed on the support base, and the support units are connected through the fixing bolt to form a whole; the assembly adjustable frame unit is provided with a jacking platform, the jacking platform is provided with an anti-slip fixing sleeve, and the anti-slip fixing sleeve is provided with a jack; the support unit is welded with an anti-displacement steel plate; the anti-displacement steel plate is provided with a hole positioning plate, and the hole positioning plate is provided with a sliding hole; the bottom support unit is welded with a bottom plate; the column is inserted into the sliding hole, the top of the column is provided with a horizontal rod, and the horizontal rod is welded with two fixed ordinary welded ball brackets; the column bottom and the beam lug are fixed through the fixing bolt; the lug of the beam hole positioning plate is provided with a sliding hole; the jack adjusts the height of the fixed ordinary welded ball bracket through the jacking column.

[0010] Further, the upper chord ball of the tetrahedral net rack roof is a crown cutting welded ball, the upper chord rod of the tetrahedral net rack roof is a square tube, the lower chord ball of the tetrahedral net rack roof is an ordinary welded ball, and the inclined web rod and the lower chord rod of the tetrahedral net rack roof are circular tubes; the tetrahedral net rack roof is connected with the steel column top steel through the finished product fixed ball hinge support, and a curved surface change net rack structure with low middle and high periphery is formed.

[0011] Further, the assembly adjustable frame is made of square steel.

[0012] Further, the fixed ordinary welded ball bracket supports the ordinary welded ball, and then adjusts the height of the tetrahedral net rack roof unit; after the column adjustment is completed, the pad is placed on the bottom plate for support.

[0013] The utility model has the following characteristics and beneficial effects:

[0014] 1. The utility model discloses a double-layer positive four-corner pyramid net rack structure which has strong overall stability and bearing capacity, can effectively resist the influence of natural disasters such as gales and earthquakes, ensures the safety of buildings and can obtain good technical and economic and social benefits when applied to practical engineering.

[0015] 2. The utility model discloses a net rack roof structure which adopts modular design and is processed and manufactured through segmented assembly and adjustable jig structure, improves the processing quality and efficiency of components.

[0016] 3. The utility model discloses a large-span special-shaped roof support column and beam system which improves the stability of the support column and beam. DRAWINGS

[0017] Figure 1 It is a large-span special-shaped roof support column and beam system schematic diagram.

[0018] Figure 2 It is a large-span special-shaped double-layer positive four-corner pyramid net rack roof installation schematic diagram.

[0019] Figure 3 It is a large-span special-shaped double-layer positive four-corner pyramid net rack roof plane schematic diagram.

[0020] Figure 4 It is a four-corner pyramid net rack roof unit preliminary processing three-dimensional schematic diagram.

[0021] Figure 5 It is a four-corner pyramid net rack roof unit upper chord rod welding three-dimensional schematic diagram.

[0022] Figure 6 It is a four-corner pyramid net rack roof unit assembly three-dimensional schematic diagram.

[0023] Figure 7 It is a segmented assembly adjustable jig (one) large sample schematic diagram.

[0024] Figure 8 It is a segmented assembly adjustable jig (two) large sample schematic diagram.

[0025] Figure 9 It is a segmented assembly adjustable jig assembly schematic diagram.

[0026] Figure 10 It is a special-shaped roof auxiliary installation support schematic diagram.

[0027] Figure 11 It is a special-shaped roof auxiliary installation support foundation large sample schematic diagram.

[0028] Figure 12 It is a special-shaped roof auxiliary installation support top large sample schematic diagram.

[0029] Figure 13 It is a displacement prevention steel plate large sample schematic diagram.

[0030] Figure 14 is a fixed column bottom large sample diagram.

[0031] In the figure: 1, steel column; 2, welded box beam; 3, square tube cross beam; 4, fixed spherical hinge support; 5, four-angle pyramid net rack roof; 6, ordinary welded ball; 7, crown-cut welded ball; 8, lower chord; 9, inclined web member; 10, upper chord; 11, square steel; 12, adjustable ordinary welded ball bracket; 13, assembled adjustable jig; 14, connecting rod; 15, connecting hole; 16, sleeve joint; 17, solid joint; 18, sliding groove; 19, reserved hole; 20, adjustable crown-cut welded ball bracket; 21, bolt; 22, cross bar; 23, column; 25, anti-displacement steel plate; 26, fixing bolt; 27, cross beam; 28, jack; 29, anti-slip fixing sleeve; 30, jacking platform; 31, special-shaped roof auxiliary installation support; 32, support unit; 33, expanded steel plate; 34, hole positioning plate; 35, sliding hole; 36, ear plate; 37, pad plate; 38, split steel plate; 39, bottom plate; 40, fixed ordinary welded ball bracket. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0033] Those skilled in the art should understand that in the disclosure of the present application, the orientations or positional relationships indicated by the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0034] Figure 1 is a large-span special-shaped roof support column beam system schematic diagram; Figure 2 is a large-span special-shaped double-layer erect four-angle pyramid net rack roof installation schematic diagram; Figure 3 is a large-span special-shaped double-layer erect four-angle pyramid net rack roof plane schematic diagram; Figure 4 is a four-angle pyramid net rack roof unit preliminary processing three-dimensional schematic diagram; Figure 5 is a four-angle pyramid net rack roof unit upper chord welding three-dimensional schematic diagram; Figure 6 is a four-angle pyramid net rack roof unit assembly three-dimensional schematic diagram;

[0035] is a four-angle pyramid net rack roof unit preliminary processing three-dimensional schematic diagram;Figure 7 is a large sample diagram of a group-puzzle adjustable tire frame (1); Figure 8 is a large sample diagram of a group-puzzle adjustable tire frame (2); Figure 9 is a group-puzzle adjustable tire frame assembly diagram; Figure 10 is a large sample diagram of an auxiliary installation support for a special-shaped roof; Figure 11 is a large sample diagram of an auxiliary installation support foundation for a special-shaped roof; Figure 12 is a large sample diagram of an auxiliary installation support top for a special-shaped roof; Figure 13 is a large sample diagram of a displacement prevention steel plate; Figure 14 is a large sample diagram of a column bottom fixation.

[0036] Example 1

[0037] Referring to the drawings, the large-span special-shaped double-layer orthosteric quadrangular pyramid net rack roof includes a steel column 1, a welded box beam 2, a square tube cross beam 3, a fixed spherical hinge support 4, a quadrangular pyramid net rack roof 5, a common welded ball 6, a crown-cut welded ball 7, a lower chord 8, an inclined web member 9, an upper chord 10, a square steel 11, an adjustable common welded ball bracket 12, a group-puzzle adjustable tire frame 13, a connecting rod 14, a connecting hole 15, a sleeve joint 16, a solid joint 17, a sliding groove 18, a reserved hole 19, an adjustable crown-cut welded ball bracket 20, a bolt 21, a cross bar 22, a stand 23, a displacement prevention steel plate 25, a fixing bolt 26, a cross beam 27, a jack 28, an anti-slip fixing sleeve 29, a jacking platform 30, an auxiliary installation support for a special-shaped roof 31, a support unit 32, an expanded steel plate 33, a hole positioning plate 34, a sliding hole 35, an ear plate 36, a pad plate 37, a split steel plate 38, a bottom plate 39, a fixed common welded ball bracket 40, a large-span special-shaped double-layer orthosteric quadrangular pyramid net rack roof structure, a large-span special-shaped roof support column beam system, a net rack roof section group-puzzle adjustable tire frame structure, and an auxiliary installation support for a special-shaped roof auxiliary positioning adjustment device are developed.

[0038] The large-span special-shaped double-layer orthosteric quadrangular pyramid net rack roof structure is composed of a quadrangular pyramid net rack roof 5 unit, a crown-cut welded ball 7 for an upper chord ball, a square tube for an upper chord 10, a common welded ball 6 for a lower chord ball, and a round tube for an inclined web member 9 and a lower chord 8. The quadrangular pyramid net rack roof 5 is connected to the steel column 1 through a finished fixed spherical hinge support, forming a curved surface change net rack structure with a middle low and a periphery high, ensuring the aesthetics and stability of the net rack structure.

[0039] The large-span special-shaped roof support column beam system includes a steel column 1, a welded box beam 2, and a square tube cross beam 3. The steel column 1 is provided with a fixed spherical hinge support 4 at the upper part. The steel column 1 is processed and manufactured by a welded box column, adopting two forms of vertical steel pipe columns and inclined steel pipe columns. The top parts of the steel columns 1 are connected by the welded box beams 2, and the other positions of the steel columns 1 are connected by the square tube cross beams 3 from bottom to top, improving the stability of the support column beam.

[0040] The adjustable frame structure of the segmented and assembled roof of the net rack is composed of square steel 11, adjustable ordinary welded ball bracket 12, assembled and adjustable frame 13, connecting rod 14, sleeve joint 16, solid joint 17, sliding groove 18, adjustable crown cutting welded ball bracket 20, bolt 21 and the like; the assembled and adjustable frame 13 is processed from square steel 11, and is provided with sliding groove 18 and connecting hole 15; the assembled and adjustable frame 13 is provided with sleeve joint 16 and solid joint 17 on both sides, and the sleeve joint 16 and the solid joint 17 are provided with connecting hole 15; the adjustable ordinary welded ball bracket 12 is processed from 1 / 3 hollow iron ball and threaded rod and is installed at the position of the sliding groove 18, mainly cooperates with the sliding groove 18 through the enlarged steel plate 33 at the bottom of the adjustable ordinary welded ball bracket 12, moves according to the designed distance of the ordinary welded ball 6, adjusts the height according to the distance of the ordinary welded ball 6 and the crown cutting welded ball 7; a plurality of assembled and adjustable frames 13 are longitudinally connected through the solid joint 17 inserted into the sleeve joint 16 and provided with bolt 21 in the connecting hole 15 to form a whole; the assembled and adjustable frames 13 are transversely connected through the connecting rod 14 passing through the reserved hole 19 of the adjustable frame 13 to form a whole; the adjustable crown cutting welded ball bracket 20 is installed at the longitudinal connecting position of the plurality of assembled and adjustable frames 13 through the separated steel plate 38, and the adjustable crown cutting welded ball bracket 20 has the same structure as the adjustable ordinary welded ball bracket 12;

[0041] The four-pyramid net rack roof 5 unit is processed through the assembled and adjustable frame 13, the ordinary welded ball 6 and the crown cutting welded ball 7 are respectively placed on the adjustable ordinary welded ball bracket 12 and the adjustable crown cutting welded ball bracket 20, then the lower chord 8, the inclined web member 9 and the upper chord 10 are welded in sequence, and finally the four-pyramid net rack roof 5 unit is assembled according to the design requirement;

[0042] The auxiliary installation support positioning adjusting device for the special-shaped roof utilizes the assembled adjustable jig 13 unit to form a support base, and is connected with the embedded parts of the concrete floor, and the support unit 32 is installed thereon, and the support units 32 are integrally formed through the fixing bolts 26; the assembled adjustable jig 13 unit is provided with the jacking platform 30, the jacking platform 30 is provided with the anti-slip fixing sleeve 29, the jack 28 is installed in the anti-slip fixing sleeve 29; the support unit 32 is welded with the anti-displacement steel plate 25; the anti-displacement steel plate 25 is provided with the hole positioning plate 34, and the hole positioning plate 34 is provided with the sliding hole 35; the bottom support unit 32 is welded with the bottom plate 39; the column 23 is inserted into the sliding hole 35, and the top of the column 23 is provided with the cross rod 22, the cross rod 22 is welded with two fixed ordinary welded ball brackets 40; the bottom of the column 23 is fixed with the lug plate 36 of the cross beam 27 through the fixing bolt 26; the lug plate 36 is arranged at the position of the hole positioning plate 34 of the cross beam 27; the jack 28 adjusts the height of the fixed ordinary welded ball bracket 40 through the jacking column 23, and the fixed ordinary welded ball bracket 40 supports the ordinary welded ball 6, thereby adjusting the height of the four-corner pyramid net rack roof 5 unit, and the column 23 is placed on the bottom plate 39 after adjustment, and the gasket 37 is placed on the bottom plate 39 to support.

[0043] Example 2

[0044] The utility model also provides a construction method of the large-span special-shaped double-layer four-corner pyramid net rack roof, and main construction steps are as follows:

[0045] Step one, the construction of the large-span special-shaped roof support column beam system: the steel column 1, the welded box beam 2 and the square tube cross beam 3; the fixed ball hinge support 4 is arranged on the upper portion of the steel column 1; the steel column 1 is processed and manufactured by the welded box column, adopts two forms of vertical steel pipe column and inclined steel pipe column, the top of the steel column 1 is pulled together by the welded box beam 2, and the square tube cross beam 3 is arranged at other positions from bottom to top to connect the steel columns 1, thereby improving the stability of the support column beam.

[0046] Step two, the construction of the assembled adjustable jig: the assembled adjustable jig 13 is made of square steel 11, with sliding groove 18 and connecting hole 15 arranged thereon; sleeve joint 16 and solid joint 17 are arranged on both sides of the assembled adjustable jig 13, and sleeve joint 16 and solid joint 17 are both provided with connecting hole 15; the adjustable ordinary welded ball bracket 12 is made of 1 / 3 hollow iron ball and threaded rod, and is installed at the position of the sliding groove 18; it is moved according to the designed distance of the ordinary welded ball 6, and the height is adjusted according to the distance between the ordinary welded ball 6 and the crown-cut welded ball 7; a plurality of assembled adjustable jigs 13 are longitudinally connected by inserting the solid joint 17 into the sleeve joint 16, and then a pin bolt 21 is arranged in the connecting hole 15 to form a whole; the assembled adjustable jigs 13 are transversely connected by connecting rods 14 to form a whole; the adjustable crown-cut welded ball bracket 20 is installed at the longitudinal connection position of the plurality of assembled adjustable jigs 13 through the split steel plate 38, and the adjustable crown-cut welded ball bracket 20 has the same structure as the adjustable ordinary welded ball bracket 12;

[0047] Step three, the processing of the four-corner pyramid space truss roof: the four-corner pyramid space truss roof 5 unit is processed by the assembled adjustable jig 13, the ordinary welded ball 6 and the crown-cut welded ball 7 are respectively placed on the adjustable ordinary welded ball bracket 12 and the adjustable crown-cut welded ball bracket 20, then the lower chord 8, the inclined web member 9 and the upper chord 10 are welded in turn, and finally the four-corner pyramid space truss roof 5 unit is assembled according to the design requirements;

[0048] Step four, the construction of the auxiliary installation support 31 of the special-shaped roof: the support base is formed by the assembled adjustable jig 13 unit, and is connected with the embedded parts of the concrete floor, and the support unit 32 is installed thereon, and the support units 32 are connected by fixed bolts 26 to form a whole; the jacking platform 30 is arranged on the assembled adjustable jig 13 unit, the anti-slip fixing sleeve 29 is arranged on the jacking platform 30, and the jack 28 is installed in the anti-slip fixing sleeve 29; the anti-displacement steel plate 25 is welded on the support unit 32; the hole positioning plate 34 is arranged on the anti-displacement steel plate 25, and the sliding hole 35 is reserved on the hole positioning plate 34; the bottom plate 39 is welded on the bottom support unit 32; the vertical column 23 is inserted into the sliding hole 35, and the top of the vertical column 23 is provided with a horizontal rod 22, and two fixed ordinary welded ball brackets 40 are welded on the horizontal rod 22; the bottom of the vertical column 23 is fixed with the lug plate 36 of the cross beam 27 through the fixed bolt 26; the lug plate 36 is arranged at the position of the hole positioning plate 34 of the cross beam 27, and the sliding hole 35 is reserved;

[0049] Step five, the positioning adjustment of the four-corner pyramid space truss roof 5: the height of the fixed ordinary welded ball bracket 40 is adjusted by the jacking vertical column 23, and the ordinary welded ball 6 is supported by the fixed ordinary welded ball bracket 40, so as to adjust the height of the four-corner pyramid space truss roof 5 unit; after the adjustment of the vertical column 23 is completed, the pad 37 is placed on the bottom plate 39 for support.

[0050] The part of the present application not described in detail is the prior art, so the present application does not describe it in detail.

[0051] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0052] Although professional terms are used more in this paper, the possibility of using other terms is not excluded. The use of these terms is only to facilitate the description and explanation of the essence of the present application; any additional limitation is contrary to the spirit of the present application.

[0053] The present application is not limited to the above best embodiment, and anyone can derive other various forms of products under the inspiration of the present application, but regardless of any change in shape or structure, any technical solution with the same or similar to the present application falls within the scope of the present application.

Claims

1. A large-span special-shaped double-layer orthosteric quadrangular pyramid space truss roof, characterized in that, The application relates to a large-span special-shaped double-layer erect quadrangular pyramid net rack roof structure, a large-span special-shaped roof support column beam system, a segmented assembly adjustable jig structure of a net rack roof and an auxiliary installation support auxiliary positioning adjusting device of a special-shaped roof. The large-span special-shaped double-layer erect quadrangular pyramid net rack roof structure is composed of a plurality of quadrangular pyramid net rack roof (5) units, the quadrangular pyramid net rack roof (5) units are processed through the segmented assembly adjustable jig (13), common welding balls (6) and crown-cut welding balls (7) are respectively placed on adjustable common welding ball brackets (12) and adjustable crown-cut welding ball brackets (20), and lower chords (8), inclined web members (9) and upper chords (10) are welded; The large-span special-shaped roof support column beam system comprises steel columns (1), welded box beams (2) and square tube cross beams (3); the upper portions of the steel columns (1) are provided with fixed spherical hinge supports (4), the steel columns (1) are processed from welded box columns, two forms of vertical steel pipe columns and inclined steel pipe columns are adopted, the top portions of the steel columns (1) are connected through the welded box beams (2), and the square tube cross beams (3) are arranged at other positions of the steel columns (1) from bottom to top. The segmented assembly adjustable jig structure of the net rack roof comprises square steels (11), adjustable common welding ball brackets (12), segmented assembly adjustable jigs (13), connecting rods (14), sleeve joints (16), solid joints (17), adjustable crown-cut welding ball brackets (20) and pin bolts (21); the segmented assembly adjustable jigs (13) are provided with sliding grooves (18) and connecting holes (15), the two sides of the segmented assembly adjustable jigs (13) are provided with the sleeve joints (16) and the solid joints (17), and the sleeve joints (16) and the solid joints (17) are provided with the connecting holes (15); the adjustable common welding ball brackets (12) are processed from 1 / 3 hollow iron balls and threaded rods and are installed at the sliding groove (18) positions, can be moved according to the design distance of the common welding balls (6), and can be adjusted in height according to the distance between the common welding balls (6) and the crown-cut welding balls (7); a plurality of segmented assembly adjustable jigs (13) are longitudinally connected through the solid joints (17) and the sleeve joints (16) and are provided with the pin bolts (21) in the connecting holes (15) to form an integral whole; the segmented assembly adjustable jigs (13) are transversely connected through the connecting rods (14) to form an integral whole; the adjustable crown-cut welding ball brackets (20) are installed at the longitudinal connection positions of the segmented assembly adjustable jigs (13) through the split steel plates (38) and are identical with the adjustable common welding ball brackets (12) in structure. The auxiliary installation support (31) of the special-shaped roof helps the positioning adjustment device to form a support base by using the assembled adjustable jig (13) unit, and is connected with the embedded parts of the concrete floor, and the support unit (32) is installed thereon, and the support units (32) are formed as a whole by the fixing bolts (26); the jacking platform (30) is arranged on the assembled adjustable jig (13) unit, the anti-slip fixing sleeve (29) is arranged on the jacking platform (30), and the jack (28) is installed in the anti-slip fixing sleeve (29); the anti-displacement steel plate (25) is welded on the support unit (32); the anti-displacement steel plate (25) is provided with a hole positioning plate (34), and the hole positioning plate (34) is provided with a sliding hole (35); the bottom plate (39) is welded on the bottom support unit (32); the vertical column (23) is inserted into the sliding hole (35), and the top of the vertical column (23) is provided with the horizontal rod (22), and the two fixed ordinary welded ball brackets (40) are welded on the horizontal rod (22); the bottom of the vertical column (23) is fixed with the ear plate (36) of the cross beam (27) through the fixing bolt (26); the ear plate (36) is arranged at the position of the hole positioning plate (34) of the cross beam (27) and the sliding hole (35) is reserved; the height of the fixed ordinary welded ball bracket (40) is adjusted by the jacking vertical column (23).

2. The long-span special-shaped double-layer orthographic square pyramid net rack roof cover according to claim 1, characterized in that, The upper chord ball of the quadrangular pyramid net rack roof (5) is a crown-cut welded ball (7), the upper chord rod (10) of the quadrangular pyramid net rack roof (5) is a square tube, the lower chord ball of the quadrangular pyramid net rack roof (5) is an ordinary welded ball (6), and the inclined web rod (9) and the lower chord rod (8) of the quadrangular pyramid net rack roof (5) are circular tubes; the quadrangular pyramid net rack roof (5) is connected with the column top steel of the steel column (1) through the finished product fixed ball hinge support, and a curved surface change net rack structure with a middle low and a periphery high is formed.

3. The long-span special-shaped double-layer orthographic square pyramid roof grid cover according to claim 1, characterized in that, The assembled adjustable jig (13) is processed and manufactured from square steel (11).

4. The long-span special-shaped double-layer orthographic square pyramid net rack roof cover according to any one of claims 1-3, characterized in that, The fixed ordinary welded ball bracket (40) supports the ordinary welded ball (6), and then adjusts the height of the quadrangular pyramid net rack roof (5) unit, and the cushion plate (37) is placed on the bottom plate (39) for support after the vertical column (23) is adjusted.

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