Steel frame structure with preset nuts for adjusting floor height

Abstract

The utility model relates to the technical field of steel structure engineering, and provides a steel frame structure with preset nuts for adjusting floor height, which comprises a horizontal frame beam and a box column. The horizontal frame beams are distributed in an orthogonal mode, the two ends of each frame beam are provided with height-adjustable box-shaped sleeves respectively, the box-shaped sleeves are hooped on the outer sides of the box-shaped columns, the box-shaped sleeves are in bolted connection with the box-shaped columns through bolts, and bolt connecting holes are evenly distributed in the side walls of the box-shaped columns from top to bottom. The horizontal frame beam comprises a box-shaped beam and an H-shaped steel beam, a box-shaped connecting frame matched with the box-shaped beam and a connecting plate assembly matched with the H-shaped steel beam are welded and fixed to the side wall of the box-shaped sleeve, the box-shaped beam is arranged on the box-shaped connecting frame in a sleeving mode and is in bolted connection with the box-shaped connecting frame, and an upper flange, a lower flange and a web of the H-shaped steel beam are in bolted connection with the connecting plate assembly; nut jackets are welded and fixed on the inner wall of the box column corresponding to the bolt connecting holes, and nuts are arranged in the nut jackets in advance. The technical problem that the floor height of an existing steel structure building is inconvenient to adjust is solved, and the scheme is reasonable in design, convenient to construct and obvious in practical effect.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure engineering, in particular to a pre - installed nut for a steel frame structure with adjustable storey height. Background Art

[0002] The floor of a steel - structure building is generally laid on a horizontal frame formed by the orthogonal arrangement of box - type beams and H - shaped steel beams. Each node of the horizontal frame is bolt - connected to a box - type column. In the actual application process, the following technical problems exist:

[0003] (1) The box - type beam, H - shaped steel beam and box - type column are connected independently. When adjusting the storey height, it is necessary to disassemble and assemble them one by one. On the one hand, it is rather cumbersome and inconvenient for construction. On the other hand, it is easy to cause the disorderly stacking of box - type beams and H - shaped steel beams, posing a safety hazard.

[0004] (2) To avoid on - site welding by opening manholes, single - direction bolts are generally used. For example, the single - direction bolts disclosed in the applicant's prior - applied patents CN202223086293.9 and CN202222244082.7. The positioning tenon on the head of the sleeve forms a mortise - and - tenon connection with the positioning hole in the inner circle of the gasket, and the slit at the tail of the sleeve forms a mortise - and - tenon connection with the stop tenons distributed on the outer conical surface of the cone - head nut. This structure can realize the fixation of the radial positions of the three, preventing the expansion sleeve and the cone - head bolt rod from rotating. However, the processing of the positioning tenon and the stop tenon greatly increases the production cost of the single - direction bolt.

[0005] Therefore, we propose a pre - installed nut for a steel frame structure with adjustable storey height. Summary of the Utility Model

[0006] (1) Technical problems to be solved

[0007] Aiming at the deficiencies of the prior art, the utility model provides a pre - installed nut for a steel frame structure with adjustable storey height, solving the technical problem of inconvenient storey - height adjustment in existing steel - structure buildings. The scheme is reasonably designed, convenient for construction, and has obvious practical effects.

[0008] (2) Technical solutions

[0009] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0010] A pre - installed nut for a steel frame structure with adjustable storey height, comprising a horizontal frame beam and a box - type column;

[0011] The horizontal frame beams are distributed orthogonally. Box - type collars with adjustable height are respectively arranged at both ends of the horizontal frame beam on the outside of the box - type column. The box - type collars are bolt - connected to the box - type column, and bolt - connection holes are evenly distributed on the side wall of the box - type column from top to bottom;

[0012] The horizontal frame beam comprises a box beam and an H-shaped steel beam, the side wall of the box sleeve is welded and fixed with a box-shaped connection frame matched with the box beam and a connection plate assembly matched with the H-shaped steel beam, the box beam is sleeved on the box-shaped connection frame and bolted to the box-shaped connection frame, and the upper and lower flanges and webs of the H-shaped steel beam are bolted to the connection plate assembly respectively;

[0013] The inner wall of the box-type column is welded with fixed nut sleeves corresponding to each bolt connection hole, and the nuts are pre-placed in the nut sleeves.

[0014] Furthermore, the inner wall of the box-shaped connection frame is welded with a fixing nut sleeve corresponding to each bolt connection hole.

[0015] Furthermore, a baffle is provided at one end of the sleeve body of the nut sleeve away from the box-shaped column, and the nut is pre-placed in the sleeve body and limited by the baffle;

[0016] Alternatively, the nut sleeve is replaced by a nut accommodating box, the bottom plate of the nut accommodating box is welded and fixed to the inner wall of the box-type column or the box-type connecting frame and is provided with through holes for bolts to pass through, the opening of the nut accommodating box is provided with a baffle, the nut is pre-placed in the nut accommodating box and limited by the baffle.

[0017] Furthermore, the connecting plate assembly includes an upper flange connecting plate, a lower flange connecting plate and a web clamp. The box beam is mounted on the box connecting frame and bolted to the box connecting frame. The web of the H-shaped steel beam extends from the gap between a pair of upper flange connecting plates and a pair of lower flange connecting plates. The two sides of the web of the H-shaped steel are clamped by web clamps and bolted to the web clamps on both sides. The upper flange of the H-shaped steel is bolted to the upper flange connecting plate, and its lower flange is bolted to the lower flange connecting plate respectively.

[0018] Furthermore, the web plate clamp on one side of the H-shaped steel beam is welded and fixed to the side wall of the box beam, and the web plate clamp on the other side is movably arranged.

[0019] Furthermore, the inner cavity cross-section of the nut sleeve is a polygon, preferably a regular hexagon.

[0020] Furthermore, the bolt is a hexagonal head bolt or a hexagon socket countersunk bolt.

[0021] Furthermore, shear sleeves are respectively inserted into the bolt connection holes facing the box-type columns and the box-type sleeves, and into the bolt connection holes facing the box-type beams and the box-type connection frames.

[0022] Furthermore, an inner gasket is sleeved on the bolt, and the inner gasket is arranged between the nut sleeve and the side wall of the box-type column and is welded and fixed to the two.

[0023] Furthermore, when the bolt is a hexagonal head bolt, an outer gasket is sleeved on the bolt, and the outer gasket is arranged between the hexagonal head of the bolt and the side wall of the box-type column.

[0024] Furthermore, the bolt connection holes of the box column located outside the covered area of the box sleeve are blocked by bolts.

[0025] (III) Beneficial Effects

[0026] The present utility model provides a pre - installed nut for an adjustable - storey steel frame structure, having the following beneficial effects:

[0027] 1. During the storey height adjustment process, the staff only needs to first remove the bolts connecting each box column and the box sleeve, then use multiple electric hoists or hydraulic mechanisms to move the horizontal frame formed by the orthogonal intersection of the box girder and the H - shaped steel beam up or down as a whole to the required position, and finally reinstall the new bolts. The overall construction is convenient. At the same time, the horizontal frame can also be maintained intact, without involving the disorderly stacking of box girders and H - shaped steel beams, eliminating potential safety hazards.

[0028] 2. By welding and fixing the nut outer sleeve and the pre - installed nut on the box column and the box connection frame (specifically the inner wall), during construction, there is no need to open a manhole for on - site welding, which can simplify the operation and eliminate potential hazards. At the same time, it can also avoid the influence of the welding heat of the nut on its strength, ensuring the reliability of the connection.

[0029] 3. Compared with the one - way bolt applied by the applicant in the prior application, the bolt assembly after optimized design has a greatly simplified structure, can effectively control the processing cost, is conducive to large - scale promotion and use in the market, and has high practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a top - view sketch of the present utility model;

[0031] Figure 2 is a schematic structural view of the first perspective of the cooperation among the box column, the box sleeve, the box girder and the H - shaped steel beam of the present utility model;

[0032] Figure 3 is Figure 2 an exploded schematic view;

[0033] Figure 4 is a schematic structural view of the second perspective of the cooperation among the box column, the box sleeve, the box girder and the H - shaped steel beam of the present utility model;

[0034] Figure 5 is a schematic structural view of the third perspective of the cooperation among the box column, the box sleeve, the box girder and the H - shaped steel beam of the present utility model;

[0035] Figure 6 is Figure 5 a schematic structural view of the cooperation between the box sleeve and the H - shaped steel beam in

[0036] Figure 7Schematic structural diagram of the cooperation of the hexagon head bolt, nut and nut outer sleeve in the present utility model;

[0037] Figure 8 Schematic cross-sectional view of the cooperation of the hexagon head bolt, nut and nut outer sleeve in the present utility model;

[0038] Figure 9 Schematic cross-sectional view of the cooperation of the hexagon head bolt, first shear-resistant sleeve, nut and nut outer sleeve in the present utility model;

[0039] Figure 10 Schematic cross-sectional view of the cooperation of the socket head cap screw, nut and nut outer sleeve in the present utility model;

[0040] Figure 11 Schematic cross-sectional view of the cooperation of the socket head cap screw, second shear-resistant sleeve, nut and nut outer sleeve in the present utility model;

[0041] Figure 12 Schematic structural diagram of the cooperation of the hexagon head bolt, nut and nut accommodating box in the present utility model.

[0042] In the figure: 1, box column; 1.1, corner column; 1.2, side column; 1.3, middle column; 2, box beam; 3, H-shaped steel beam; 4, box sleeve; 5, box connection frame; 6.1, upper flange connecting plate; 6.2, lower flange connecting plate; 7, web splint; 8, bolt; 8.1, hexagon head bolt; 8.2, socket head cap screw; 9, nut; 10, nut outer sleeve; 11.1, outer gasket; 11.2, inner gasket; 12.1, first shear-resistant sleeve; 12.2, second shear-resistant sleeve; 13, nut accommodating box; 14, strip baffle. Detailed implementation manners

[0043] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0044] Referring to the attached Figure 1-8 , a pre-set nut for an adjustable floor height steel frame structure includes a horizontal frame beam and a box column 1;

[0045] The horizontal frame beams are orthogonally distributed, and both ends of the horizontal frame beams are provided with box-shaped sleeves 4 with adjustable heights, which are clamped on the outside of the box-shaped column 1. The box-shaped sleeves 4 are bolted to the box-shaped column 1, and the side walls of the box-shaped column 1 are evenly distributed with bolt connection holes from top to bottom. The bolt connection holes of the box-shaped column 1 outside the coverage area of the box-shaped sleeves 4 are blocked by bolts;

[0046] The horizontal frame beam comprises a box beam 2 and an H-shaped steel beam 3, and a box-shaped connecting frame 5 matched with the box beam 2 and a connecting plate assembly matched with the H-shaped steel beam 3 are welded and fixed to the side wall of the box-shaped sleeve 4, the box beam 2 is sleeved on the box-shaped connecting frame 5 and bolted to the box-shaped connecting frame 5, and the upper and lower flanges and webs of the H-shaped steel beam 3 are bolted to the connecting plate assembly respectively; in this embodiment, the box beam 2 comprises a corner column 1.1, a side column 1.2 and a middle column 1.3; at the node of the corner column 1.1, a pair of H-shaped steel beams 3 distributed at right angles are connected to the box-shaped sleeve 4; at the node of the side column 1.2, a pair of H-shaped steel beams 3 and a single box beam 2 and a pair of H-shaped steel beams 3 distributed in a T shape are connected to the box-shaped sleeve 4; at the node of the middle column 1.3, a pair of H-shaped steel beams 3 and a pair of box beams 2 distributed orthogonally in a cross shape are connected to the box-shaped sleeve 4;

[0047] The inner walls of the box-type column 1 and the inner walls of the box-type connecting frame 5 are welded and fixed with nut sleeves 10 corresponding to the bolt connection holes. The nut sleeve 10 includes a sleeve body. An integrally formed annular baffle is provided at the end of the sleeve body facing away from the box-type column. A through hole is formed in the center of the annular baffle for the bolt to pass through. The nut 9 is pre-placed in the sleeve body of the nut sleeve and is limited by the baffle.

[0048] In this embodiment, the connecting plate assembly includes an upper flange connecting plate 6.1, a lower flange connecting plate 6.2 and a web clamping plate 7. The box beam 2 is sleeved on the box connecting frame 5 and bolted to the box connecting frame 5. The web of the H-shaped steel beam 3 extends from the gap between a pair of upper flange connecting plates 6.1 and a pair of lower flange connecting plates 6.2. Both sides of the web of the H-shaped steel are clamped and bolted to the web clamping plates 7 on both sides. The upper flange of the H-shaped steel is bolted to the upper flange connecting plate 6.1, and the lower flange is bolted to the lower flange connecting plate 6.2. The web clamping plate 7 on one side of the H-shaped steel beam 3 is welded and fixed to the side wall of the box beam 2, and the web clamping plate 7 on the other side is movably arranged.

[0049] In this embodiment, the sleeve body of the nut sleeve 10 is a polygon, preferably a regular hexagon, so as to restrict the nut 9 which is also a regular hexagon, and prevent the nut 9 from rotating when the bolt 8 is turned. Figure 12, the nut outer sleeve is replaced by a nut accommodating box 13. A pair of side walls of the nut are tightly fitted with a pair of side walls of the nut accommodating box 13 to prevent the nut from rotating. The bottom plate of the nut accommodating box 13 is welded and fixed to the inner wall of the box column 1 or the box connecting frame 5 and is provided with a perforation for the bolt to pass through (the setting of the inner gasket 11.2 is omitted). A strip-shaped baffle 14 is welded and fixed to the opening of the nut accommodating box 13. The nut 9 is pre-placed in the nut accommodating box 13 and is limited by the strip-shaped baffle 14.

[0050] In this embodiment, referring to the attached Figure 7-11 , the bolt 8 for bolt connection can be a hexagon head bolt 8.1 or a socket head cap screw 8.2. The bolts for connecting the box girder 2 and the box connecting frame 5, and the bolts for connecting the H-shaped steel girder 3 and the upper flange connecting plate 6.1 and the lower flange connecting plate 6.2 can be socket head cap screws 8.2. The bolt head is embedded, which can improve the surface flatness of the box girder 2 and the H-shaped steel girder 3 and reduce the interference with the floor slab. In addition, shear sleeves can be inserted respectively into the bolt connection holes facing each other between the box column 1 and the box sleeve 4, between the box girder 2 and the box connecting frame 5, and between the H-shaped steel girder 3 and the upper flange connecting plate 6.1 and the lower flange connecting plate 6.2 (the shear sleeve is located between the bolt connection hole and the bolt) to further improve the shear resistance. Among them, the first shear sleeve 12.1 adapted to the hexagon head bolt 8.1 and the second shear sleeve 12.2 adapted to the socket head cap screw 8.2. The main difference between the latter and the former is that a flared opening adapted to the bolt countersink is formed at its end. An inner gasket 11.2 and an outer gasket 11.1 are sleeved on the bolt. The inner gasket 11.2 is arranged between the nut outer sleeve 10 and the side wall of the box column 1 and is welded and fixed to both of them. An outer gasket 11.1 is sleeved on the bolt. The outer gasket 11.1 is arranged between the hexagon head of the bolt and the side wall of the box column 1.

[0051] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the process, method, article or device including the element.

[0052] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pre-set nut is used for a steel frame structure with adjustable storey height, comprising a horizontal frame beam and a box column; The horizontal frame beams are orthogonally distributed, and both ends of the horizontal frame beams are respectively provided with box-shaped hoops with adjustable heights on the outside of the box-shaped columns. The box-shaped hoops are bolted to the box-shaped columns, and the side walls of the box-shaped columns are evenly distributed with bolt connection holes from top to bottom; The horizontal frame beam comprises a box beam and an H-shaped steel beam, the side wall of the box sleeve is welded and fixed with a box-shaped connection frame matched with the box beam and a connection plate assembly matched with the H-shaped steel beam, the box beam is sleeved on the box-shaped connection frame and bolted to the box-shaped connection frame, and the upper and lower flanges and webs of the H-shaped steel beam are bolted to the connection plate assembly respectively; The inner wall of the box-type column is welded with fixed nut sleeves corresponding to each bolt connection hole, and the nuts are pre-placed in the nut sleeves.

2. The steel frame structure with a pre - installed nut for adjustable storey height according to claim 1, characterized in that: The inner wall of the box-shaped connection frame is welded with fixing nut sleeves corresponding to each bolt connection hole.

3. The steel frame structure with a pre-set nut for adjustable floor height according to claim 1, characterized in that: A baffle is provided at one end of the sleeve body of the nut housing facing away from the box-shaped column, and the nut is pre-placed in the sleeve body and limited by the baffle; Alternatively, the nut sleeve is replaced by a nut accommodating box, the bottom plate of the nut accommodating box is welded and fixed to the inner wall of the box-type column or the box-type connecting frame and is provided with through holes for bolts to pass through, the opening of the nut accommodating box is provided with a baffle, the nut is pre-placed in the nut accommodating box and limited by the baffle.

4. A steel frame structure with a pre - installed nut for adjustable floor height according to claim 1, characterized in that: The connecting plate assembly includes an upper flange connecting plate, a lower flange connecting plate and a web clamp. The box beam is sleeved on the box connecting frame and bolted to the box connecting frame. The web of the H-shaped steel beam extends into the gap between a pair of upper flange connecting plates and a pair of lower flange connecting plates. The two sides of the web of the H-shaped steel are clamped and bolted to the web clamps on both sides by web clamps. The upper flange of the H-shaped steel is bolted to the upper flange connecting plate, and the lower flange is bolted to the lower flange connecting plate respectively.

5. A steel frame structure with a pre-set nut for adjustable floor height as claimed in claim 4, characterized in that: The web plate clamp on one side of the H-shaped steel beam is welded and fixed to the side wall of the box beam, and the web plate clamp on the other side is movably arranged.

6. A steel frame structure with a pre-set nut for adjustable floor height according to claim 1, characterized in that: The inner cavity cross section of the nut outer sleeve is polygonal.

7. The adjustable floor height steel frame structure with a pre - installed nut as claimed in claim 1, wherein: The bolt is a hexagonal head bolt or a hexagon socket countersunk head bolt.

8. A steel frame structure with a pre - installed nut for adjustable storey height as claimed in claim 7, characterized in that: Shear sleeves are respectively inserted into the bolt connection holes facing the box-type columns and the box-type sleeves, and into the bolt connection holes facing the box-type beams and the box-type connection frames.

9. A steel frame structure with a pre-set nut for adjustable storey height as claimed in claim 7, characterized in that: An inner gasket is sleeved on the bolt, and the inner gasket is arranged between the nut outer sleeve and the side wall of the box-shaped column and is welded and fixed to the two; When the bolt is a hexagonal head bolt, an outer gasket is sleeved on the bolt, and the outer gasket is arranged between the hexagonal head of the bolt and the side wall of the box-type column.

10. A steel frame structure with a pre-set nut for adjustable floor height as described in claim 1, characterized in that: The bolt connection holes of the box-type column located outside the coverage area of the box-type sleeve are blocked by bolts.

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