An exterior wall structure of a prefabricated building

Abstract

The present invention discloses an external wall structure for prefabricated buildings, which solves the problems of splicing of frame beams, columns and external walls in large-scale assembly, ensures the connection quality and improves the assembly efficiency. The technical solution adopted is as follows: an external wall panel is arranged between the outer sides of the cross beam and the column. A plurality of connecting pieces are arranged on the four sides of the external wall panel body. Long holes are arranged at the relative positions of the connecting pieces on both sides of the external wall panel body. Threaded connection holes are arranged on the column and the cross beam at the positions corresponding to the connecting pieces. A heat preservation board is arranged on the outer side of the external wall panel. A plurality of external heat preservation boards are horizontally arranged between two adjacent J-shaped purlins. The lower end of the external heat preservation board is clamped on the lower vertical plate of the lower J-shaped purlin through a groove. A window sill hole is reserved on the outer side of the external wall panel. A window sill board is arranged around the outside of the window sill hole. The upper window sill board, the lower window sill board and the left and right window sill boards cooperate to form a closed window sill structure.

Description

Technical Field

[0001] The invention discloses an outer wall structure of an assembled building, belonging to the technical field of steel structure connection. Background Art

[0002] Buildings assembled on site from prefabricated components are called prefabricated buildings. With the continuous progress and development of modern industrialization, prefabricated buildings have been promoted and applied. Prefabricated buildings require the assembly of prefabricated steel structure components such as beams, columns, and plates on site. However, the existing wall panels use small strips, which requires a lot of jointing work, and the installation flatness is difficult to ensure. The joints are prone to cracking in the later stage, and the installation period is long. Summary of the invention

[0003] The present invention overcomes the shortcomings of the prior art, provides an exterior wall structure of an assembled building, solves the problem of splicing frame beams and exterior walls in large-scale assembly, ensures connection quality, improves assembly efficiency, facilitates transportation and installation, and reduces costs.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: an exterior wall structure of an assembled building, including a cross beam, an L-shaped node structure, a T-shaped node structure, a cross-shaped node structure, a column, a column connection node, a floor plate body and an exterior wall plate, an insulation plate and a window sill plate, wherein the cross beam, the L-shaped node structure, the T-shaped node structure and the cross-shaped node structure constitute a main beam unit in the shape of a field, the cross-shaped node structure is located at the center of the field, the L-shaped node structure is located at the four corners of the field, the T-shaped node structure is located in the middle of the side of the field, and the L-shaped node structure and the T-shaped node structure, as well as the T-shaped node structure and the cross-shaped node structure are all connected with a cross beam; the L-shaped node structure, the T-shaped node structure and the cross-shaped node structure all include A square cylindrical frame and a connecting seat, wherein the two connecting seats of the L-shaped node structure are arranged on two adjacent side walls of the cylindrical frame, the three connecting seats of the T-shaped node structure are arranged in sequence on three adjacent side walls of the cylindrical frame, and the four connecting seats of the cross-shaped node structure are respectively arranged on the four side walls of the cylindrical frame, the connecting seat is in a stepped shape distributed downward, and the connecting seat is a frame-shaped structure, the connecting seat is provided with a connecting hole for connecting and fixing with a cross beam, the connecting seat is a frame-shaped structure with an opening on one side, and the open side of the frame-shaped structure is used to screw the connecting bolts on the connecting surface, and two support platforms are annularly arranged on the side wall of the cylindrical frame, the two support platforms are distributed up and down, and the two support platforms are respectively aligned with the upper and lower ends of the connecting seat;

[0005] Vertical columns are sleeved on both the upper and lower ends of the cylindrical frame body. The vertical columns are limited by the support platform. Column connection nodes are intermittently arranged on the upper part of the vertical columns. The column connection nodes include a mother node, a child node, a plurality of F-shaped fasteners and a plurality of inclined wedges. The mother node and the child node are embedded and locked together as a whole through the plurality of F-shaped fasteners and the plurality of inclined wedges. The outer end faces of the mother node and the child node are fixedly connected to the beam or column to be connected.

[0006] A plurality of the floor slab bodies are matched, spliced and fixed on the cross beam to form a floor slab connection structure. The floor slab body has a square plate-like structure. A stepped connection end is arranged on one side of the floor slab body. A plurality of holes are sequentially arranged along the edge direction on the other three sides. The holes may be counterbore structures. The holes on the other three sides of the floor slab body are fixed to the cross beam through bolts. Holes are arranged on each stepped surface of the connection end. The stepped shapes of two adjacent floor slab bodies can be matched and connected and fixed together.

[0007] An exterior wall panel is arranged between the outer side surfaces of the cross beam and the vertical column. The exterior wall panel includes an exterior wall panel body, a vertical column and a cross beam. The exterior wall panel body has a square plate-like structure. A plurality of connecting pieces are arranged on the four side edges of the exterior wall panel body. The connecting pieces are L-shaped. The connecting pieces are symmetrically arranged on both sides of the exterior wall panel body. Long holes are arranged at the relative positions of the connecting pieces on both sides of the exterior wall panel body. Threaded connection holes are arranged on the vertical column and the cross beam at the positions corresponding to the connecting pieces. The threaded connection holes are located between the two connecting pieces and correspond to the long holes on the connecting pieces. The threaded connection holes and the long holes are connected together through bolts.

[0008] The two vertical sides of the connecting piece are arranged oppositely.

[0009] The threaded connection holes are either integrally formed or welded and fixed on the vertical column and the cross beam.

[0010] At least two threaded connection holes are arranged on the vertical column and the cross beam.

[0011] The connecting piece and the exterior wall panel body are either integrally formed or welded and fixed.

[0012] A heat preservation board is arranged on the outer side of the exterior wall panel. The heat preservation board includes J-shaped purlins and an external heat preservation board. A plurality of J-shaped purlins are horizontally and fixedly arranged on the exterior wall panel, and the plurality of J-shaped purlins are equally spaced in the vertical direction. A groove is arranged on the lower end face of the external heat preservation board, and the groove can be correspondingly clamped on the lower vertical plate of the J-shaped purlin. A plurality of external heat preservation boards are horizontally arranged between two adjacent J-shaped purlins. The lower end of the external heat preservation board is clamped on the lower vertical plate of the lower J-shaped purlin through the groove, the upper end of the external heat preservation board abuts against the lower horizontal plate of the upper J-shaped purlin, and the upper end face of the external heat preservation board and the lower horizontal plate of the upper J-shaped purlin are fixedly connected by screws.

[0013] The J-shaped purlin includes an upper horizontal plate, a connecting vertical plate, a lower horizontal plate and a lower vertical plate, and the upper horizontal plate, the connecting vertical plate, the lower horizontal plate and the lower vertical plate are sequentially connected together. The lower horizontal plate is fixedly connected to the upper end face of the exterior wall panel by screws, and the lower vertical plate is inserted into the groove of the external heat preservation board.

[0014] A window sill hole is reserved on the outer side of the exterior wall panel, and a window sill board is arranged around the outer side of the window sill hole. The window sill board includes an upper window sill board, a lower window sill board, left and right window sill boards and a support hanger. The support hanger is fixedly arranged on the exterior wall panel, the lower window sill board is horizontally and fixedly arranged on the support hanger, the left and right window sill boards are symmetrically arranged at the left and right ends of the lower window sill board, and the upper window sill board is fixedly arranged at the upper ends of the left and right window sill boards. The upper window sill board, the lower window sill board and the left and right window sill boards cooperate to form a closed window sill structure.

[0015] The support hanger is of angle steel structure.

[0016] The front side of the upper window sill board is an inverted stepped structure.

[0017] The upper side surface of the lower window sill board is an inclined surface inclined outwards.

[0018] The inner side of the upper window sill board and / or the lower window sill board extends into the reserved hole of the exterior wall panel. The upper end of the female node is provided with a round hole-shaped concave platform, and a plurality of female node round holes are arranged on the upper end side wall. A female node groove is arranged inside the female node; the lower end of the male node is provided with a cylindrical convex platform, and a plurality of male node U-shaped grooves are arranged at the bottom of the cylindrical convex platform. A male node groove is arranged inside the male node; the upper and lower ends of the F-shaped buckle are provided with buckle convex platforms; both ends of the wedge are provided with wedge convex platforms, and a wedge bolt hole is arranged in the middle; the round hole-shaped concave platform of the female node is clamped with the cylindrical convex platform of the male node, the F-shaped buckle and the wedge are alternately arranged, and the buckle convex platforms and the wedge convex platforms at their upper and lower ends are respectively clamped with the female node groove and the male node groove. The female node, the male node and the wedge are fixedly connected by a bolt II passing through the female node round hole, the male node U-shaped groove and the wedge bolt hole.

[0019] The mother node and the child node are directly welded to the two beams or columns to be connected or welded together through other connecting components.

[0020] A snap bolt hole is provided in the middle of the F-shaped snap. The mother node, the child node and the F-shaped snap are fixedly connected by a first bolt passing through the round hole of the mother node, the U-shaped groove of the child node and the snap bolt hole.

[0021] The first bolt is an internal hexagonal socket head bolt.

[0022] The second bolt is an external hexagonal bolt.

[0023] The cross beam is a frame structure with an opening on one side. End connection seats are arranged at both ends of the cross beam. The end connection seats are in an inverted stepped shape. The end connection seats are connected to the connection seats in a matching manner. The end connection seats are in a frame structure. Connection through holes for fixedly connecting with the connection seats are provided on the end connection seats. And the end connection seats are frame structures with an opening on one side. The opening side of the frame structure is used for screwing the connection bolts on the connection surface.

[0024] The stepped structures of the connection seat and the end connection seat have at least two layers for mutual matching support and fixation.

[0025] The columnar frame body, the connection seat and the support platform are either integrally formed or fixed by welding. The end connection seat and the cross beam are integrally formed.

[0026] Reinforcing rib plates for strengthening the structure are arranged in the frame structure of the end connection seat.

[0027] The beneficial effects of the present invention compared with the prior art are as follows: The present invention uses the matching support and fixation of the end of the cross beam and the connection seats on each node structure to form the main beam structure unit. The upper and lower ends of the columnar frame body of the node structure are used for inserting the corresponding columns. The stepped structure connection is more accurate and firm, providing a solution to the problem of splicing of frame beams and columns in large-scale assembly, and ensuring the connection quality, improving the assembly efficiency. The main beam structure is paved. In the frame body of each main beam structure, two floor slab bodies are laid. And the connection surfaces of the two floor slab bodies are lapped by mutually matching stepped structures and then connected by bolts. The other three sides are connected to the cross beam of the main beam structure by a plurality of bolts. On the premise of ensuring the quality, the weight of a single floor slab is reduced, which is convenient for transportation and installation, and the cost is reduced.

[0028] After the exterior wall panel body is positioned between the corresponding columns and cross beams by relying on the connecting piece in the present invention, the exterior wall panel body is fixedly connected to the column and the exterior wall panel body is fixedly connected to the cross beam by bolts, completing the installation of the connection node between the frame structure and the infill wall, solving the problem of installation of the exterior wall panel in large-scale assembly, being convenient for transportation and installation, reducing the cost, and improving the assembly efficiency.

[0029] By changing the force-bearing mode of the thermal insulation board from the traditional hanging connection to a lifting and fixing method, the present invention enables the thermal insulation board to avoid the risk of falling off. Moreover, the upper and lower installation gaps of the thermal insulation board are closer, and it can be adjusted slidingly in the horizontal direction, greatly improving the installation efficiency, solving the installation problem of the thermal insulation board in large-scale assembly, with simple installation, tight splicing, and improved thermal insulation effect.

[0030] The present invention supports the lower window sill board by fixing angle steel on the exterior wall board, and then the left and right window sill boards and the upper window sill board are sequentially arranged on the lower window sill board. This not only creates a shape for the exterior wall of the prefabricated building, but most importantly, prevents window leakage, solves the installation problem of the window sill board in large-scale assembly, with simple installation and avoiding window leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below in conjunction with the drawings.

[0032] Figure 1 It is a schematic structural diagram of the present invention.

[0033] Figure 2 It is a side view of the present invention.

[0034] Figure 3 It is a schematic structural diagram of the connection structure of the floor slab in the present invention.

[0035] Figure 4 It is a side view of the connection structure of the floor slab in the present invention.

[0036] Figure 5 It is a schematic structural diagram of the main frame in the present invention.

[0037] Figure 6 It is a three-dimensional schematic diagram of the main beam unit in the present invention.

[0038] Figure 7 It is a three-dimensional schematic diagram of the cross beam in the present invention.

[0039] Figure 8 It is a three-dimensional schematic diagram of the L-shaped node structure in the present invention.

[0040] Figure 9 It is a three-dimensional schematic diagram of the T-shaped node structure in the present invention.

[0041] Figure 10 It is a three-dimensional schematic diagram of the cross-shaped node structure in the present invention.

[0042] Figure 11 It is a schematic diagram of the split structure of the column connection node in the present invention.

[0043] Figure 12 It is a schematic sectional view of the column connection node in the present invention.

[0044] Figure 13 It is a top view structural schematic diagram of the column connection node in the present invention.

[0045] Figure 14 It is a top view sectional structural schematic diagram of the column connection node in the present invention.

[0046] Figure 15 It is a split sectional structural schematic diagram of the column connection node in the present invention.

[0047] Figure 16 It is a structural schematic diagram of the F-shaped buckle of the column connection node in the present invention.

[0048] Figure 17 It is a structural schematic diagram of the wedge of the column connection node in the present invention.

[0049] Figure 18 It is a connection structural schematic diagram of the exterior wall panel in the present invention.

[0050] Figure 19 It is a connection schematic diagram of the column and the exterior wall panel body in the present invention.

[0051] Figure 20 It is a connection schematic diagram of the cross beam and the exterior wall panel body in the present invention.

[0052] Figure 21 It is a connection structural schematic diagram of the insulation board in the present invention.

[0053] Figure 22 It is a side view of the connection structure of the insulation board in the present invention.

[0054] Figure 23 It is a connection structural schematic diagram of the window sill board in the present invention.

[0055] Figure 24This is a side view of the connection structure of the window sill board in the present invention. In the figure: 1 is a cross beam, 11 is a cylindrical frame body, 12 is a connection seat, 13 is a connection hole, 14 is a support platform, 2 is an L-shaped node structure, 21 is an end connection seat, 23 is a connection through hole, 24 is a reinforcing rib plate, 3 is a T-shaped node structure, 4 is a cross-shaped node structure, 5 is a column, 6 is a column connection node, 61 is a female node, 6101 is a circular hole-shaped concave platform, 6102 is a circular hole of the female node, 6103 is a groove of the female node, 62 is an F-shaped buckle, 6201 is a buckle boss, 6202 is a buckle bolt hole, 63 is a male node, 6301 is a cylindrical boss, 6302 is a U-shaped groove of the male node, 6303 is a groove of the male node, 64 is a bolt one, 65 is a wedge, 6501 is a wedge boss, 6502 is a wedge bolt hole, 66 is a bolt two, 7 is a floor slab body, 8 is a connection end, 9 is a hole, 10 is an exterior wall panel, 101 is an exterior wall panel body, 102 is a column, 103 is a cross beam, 104 is a connecting piece, 105 is a long hole, 106 is a threaded connection hole, 107 is a bolt, 20 is a thermal insulation board, 202 is a J-shaped purlin, 203 is an external thermal insulation board, 204 is a groove, 205 is a screw, 30 is a window sill board, 301 is an upper window sill board, 302 is a lower window sill board, 303 is a left and right window sill board, 304 is a support hanger, 305 is an exterior wall panel. Detailed implementation manners

[0056] As Figures 1 to 24As shown in the figure, an exterior wall structure of a prefabricated building according to the present invention includes a cross beam 1, an L-shaped joint structure 2, a T-shaped joint structure 3, a cross-shaped joint structure 4, a column 5, a column connection joint 6, a floor slab body 7, an exterior wall panel 10, a thermal insulation panel 20, and a window sill panel 30. The cross beam 1, the L-shaped joint structure 2, the T-shaped joint structure 3, and the cross-shaped joint structure 4 form a main beam unit in the shape of a Chinese character 'tian' (field). The cross-shaped joint structure 4 is located at the center of the 'tian' character, the L-shaped joint structures 2 are located at the four corners of the 'tian' character, and the T-shaped joint structures 3 are located in the middle of the sides of the 'tian' character. Cross beams 1 are connected between the L-shaped joint structure 2 and the T-shaped joint structure 3, and between the T-shaped joint structure 3 and the cross-shaped joint structure 4. The L-shaped joint structure 2, the T-shaped joint structure 3, and the cross-shaped joint structure 4 each include a square columnar frame 11 and a connecting seat 12. Among them, the two connecting seats 12 of the L-shaped joint structure 2 are arranged on two adjacent side walls of the columnar frame 11, the three connecting seats 12 of the T-shaped joint structure 3 are sequentially arranged on three adjacent side walls of the columnar frame 11, and the four connecting seats 12 of the cross-shaped joint structure 4 are respectively arranged on the four side walls of the columnar frame 11. The connecting seat 12 is in a stepped shape distributed downward, and the connecting seat 12 is a frame structure. A connecting hole 13 for connecting and fixing with the cross beam 1 is arranged on the connecting seat 12. The connecting seat 12 is a frame structure with one side open, and the open side of the frame structure is used for screwing the connecting bolts on the connecting surface. Two supporting platforms 14 are annularly arranged on the side wall of the columnar frame 11. The two supporting platforms 14 are distributed up and down, and the two supporting platforms 14 are respectively aligned with the upper and lower ends of the connecting seat 12;

[0057] The upper and lower ends of the columnar frame 11 are both sleeved with columns 5. The columns 5 are limited by the supporting platforms 14. Column connection joints 6 are intermittently arranged on the columns 5. The column connection joint 6 includes a mother joint 61, a child joint 63, a plurality of F-shaped fasteners 62, and a plurality of wedge blocks 65. The mother joint 61 and the child joint 63 are integrally locked and connected by embedding a plurality of F-shaped fasteners 62 and a plurality of wedge blocks 65. The outer end faces of the mother joint 61 and the child joint 63 are fixedly connected to the beam or column to be connected;

[0058] A plurality of the floor slab bodies 7 are matched, spliced, and fixed on the cross beam 1 to form a floor slab connection structure. The floor slab body 7 is in a square plate-like structure. A stepped connecting end 8 is arranged on one side of the floor slab body 7. A plurality of holes 9 are sequentially arranged along the edge direction on the other three sides. The holes 9 may be counterbore structures, and the holes 9 on the other three sides of the floor slab body 7 are fixed to the cross beam 1 by bolts. A hole 9 is arranged on each stepped surface of the connecting end 8. The stepped shapes of two adjacent floor slab bodies 7 can be matched and connected and fixed together;

[0059] An exterior wall panel 10 is provided between the outer sides of the cross beam 1 and the column 5. The exterior wall panel 10 includes an exterior wall panel body 101, columns 102, and cross beams 103. The exterior wall panel body 101 has a square plate-like structure. A plurality of connecting members 104 are provided on the four sides of the exterior wall panel body 101. The connecting members 104 are L-shaped and are symmetrically arranged on both sides of the exterior wall panel body 101. Long holes 105 are provided at the relative positions of the connecting members 104 on both sides of the exterior wall panel body 101. Threaded connection holes 106 are provided on the columns 102 and cross beams 103 at positions corresponding to the connecting members 104. The threaded connection holes 106 are located between two connecting members 104 and correspond to the long holes 105 on the connecting members 104. The threaded connection holes 106 and the long holes 105 are connected together by bolts 107;

[0060] A heat preservation board 20 is provided outside the exterior wall panel 10. The heat preservation board 20 includes J-shaped purlins 202 and an external heat preservation board 203. A plurality of J-shaped purlins 202 are horizontally fixed on the exterior wall panel 10. The plurality of J-shaped purlins 202 are equally spaced in the vertical direction. A groove 204 is provided on the lower end face of the external heat preservation board 203. The groove 204 can be fitted and clamped on the lower vertical plate of the J-shaped purlin 202. A plurality of external heat preservation boards 203 are horizontally arranged between adjacent two J-shaped purlins 202. The lower end of the external heat preservation board 203 is clamped on the lower vertical plate of the lower J-shaped purlin 202 through the groove 204. The upper end of the external heat preservation board 203 abuts against the lower horizontal plate of the upper J-shaped purlin 202. The upper end face of the external heat preservation board 203 and the lower horizontal plate of the upper J-shaped purlin 202 are fixedly connected by screws 205;

[0061] A window sill hole is reserved outside the exterior wall panel 10. A window sill board 30 is provided around the outside of the window sill hole. The window sill board 30 includes an upper window sill board 301, a lower window sill board 302, left and right window sill boards 303, and a support hanger 304. The support hanger 304 is fixedly provided on the exterior wall board 305. The lower window sill board 302 is horizontally fixed on the support hanger 304. The left and right window sill boards 303 are symmetrically arranged at the left and right ends of the lower window sill board 302. The upper window sill board 301 is fixedly provided at the upper ends of the left and right window sill boards 303. The upper window sill board 301, the lower window sill board 302, and the left and right window sill boards 303 cooperate to form a closed window sill structure.

[0062] The upper end of the mother node 61 is provided with a circular hole-shaped concave platform 6101, and a plurality of mother node circular holes 6102 are provided on the upper side wall. A mother node groove 6103 is provided inside the mother node 61; the lower end of the child node 63 is provided with a cylindrical boss 6301, and a plurality of child node U-shaped grooves 6302 are provided at the bottom of the cylindrical boss 6301. A child node groove 6303 is provided inside the child node 63; the upper and lower ends of the F-shaped buckle 62 are provided with buckle bosses 6201; both ends of the wedge 65 are provided with wedge bosses 6501, and a wedge bolt hole 6502 is provided in the middle; the circular hole-shaped concave platform 6101 of the mother node 61 is snap-connected with the cylindrical boss 6301 of the child node 63. The F-shaped buckles 62 and the wedges 65 are arranged alternately, and the buckle bosses 6201 and the wedge bosses 6501 at their upper and lower ends are respectively snap-connected with the mother node groove 6103 and the child node groove 6303. The mother node 61, the child node 63 and the wedge 65 are fixedly connected by a second bolt 66 passing through the mother node circular hole 6102, the child node U-shaped groove 6302 and the wedge bolt hole 6502.

[0063] The mother node 61 and the child node 63 are directly welded to the two beams or columns to be connected or welded together through other connecting components.

[0064] A buckle bolt hole 6202 is provided in the middle of the F-shaped buckle 62. The mother node 61, the child node 63 and the F-shaped buckle 62 are fixedly connected by a first bolt 64 passing through the mother node circular hole 6102, the child node U-shaped groove 6302 and the buckle bolt hole 6202.

[0065] The first bolt 64 is an internal hexagonal socket head cap bolt.

[0066] The second bolt 66 is an external hexagonal bolt.

[0067] The cross beam 1 is a frame structure with an opening on one side. End connection seats 21 are provided at both ends of the cross beam 1. The end connection seats 21 are in an inverted stepped shape. The end connection seats 21 are matched and connected with the connection seats 12. The end connection seats 21 are in a frame structure. Connection through holes 23 for connecting and fixing with the connection seats 12 are provided on the end connection seats 21. And the end connection seats 21 are frame structures with an opening on one side. The opening side of the frame structure is used for screwing the connection bolts on the connection surface.

[0068] The stepped structures of the connection seat 12 and the end connection seat 21 have at least two layers for mutual matching support and fixation.

[0069] The cylindrical frame body 11, the connection seat 12 and the support platform 14 are either integrally formed or welded and fixed, and the end connection seat 21 and the cross beam 1 are integrally formed.

[0070] A reinforcing rib plate 24 for strengthening the structure is arranged inside the frame structure of the end connection seat 21.

[0071] In the present invention, the beam end is supported and fixed in a matching manner with the connection seats on each node structure to form a main beam structure unit. The upper and lower ends of the columnar frame of the node structure are used for inserting corresponding columns. The stepped structure connection is more accurate and firm, providing a solution to the problem of splicing of frame beam columns in large-scale assembly, ensuring the connection quality, improving the assembly efficiency. The main beam structure is paved. Inside the frame body of each main beam structure, two floor slab bodies are laid, and the connection surfaces of the two floor slab bodies are lapped by mutually matching stepped structures and then bolted. The other three sides are bolted to the cross beam of the main beam structure. On the premise of ensuring the quality, the weight of a single floor slab is reduced, which is convenient for transportation and installation, and the cost is reduced.

[0072] After the exterior wall panel body is positioned between the corresponding columns and cross beams by relying on the connecting pieces in the present invention, the exterior wall panel body is fixedly connected with the columns and the exterior wall panel body is fixedly connected with the cross beams through bolts, completing the installation of the connection nodes between the frame structure and the infill wall, solving the installation problem of the exterior wall panel in large-scale assembly, being convenient for transportation and installation, reducing the cost, and improving the assembly efficiency.

[0073] By changing the force application mode of the thermal insulation board from the traditional hanging connection to the lifting and fixing in the present invention, the risk of the thermal insulation board falling off is avoided, and the upper and lower installation gaps of the thermal insulation board are closer, and it can be slidably adjusted in the horizontal direction, greatly improving the installation efficiency, solving the installation problem of the thermal insulation board in large-scale assembly, being simple to install, closely spliced, and improving the thermal insulation effect.

[0074] In the present invention, angle steels are fixed on the exterior wall panel to support the lower window sill board, and then the left and right window sill boards and the upper window sill board are sequentially arranged on the lower window sill board, not only making a shape for the exterior wall of the prefabricated building, but also mainly preventing the window from leaking water, solving the installation problem of the window sill board in large-scale assembly, being simple to install, and avoiding the window from leaking water.

[0075] In the present invention, the mother node 61 and the child node 63 are locked and connected into a whole by embedding a plurality of F-shaped buckles 62 and a plurality of inclined wedges 65 into the mother node 61 and the child node 63. In this embodiment, four F-shaped buckles 62 and four inclined wedges 65 can be set. The F-shaped buckles 62 clamp the mother node 61 and the child node 63 into a whole, and an inclined wedge 65 is arranged between every two F-shaped buckles 62 to fasten the mother node 61, the child node 63 and the F-shaped buckles 62 into a whole. When it is necessary to connect two beams or columns, only need to place the connection positioning node of this embodiment between the beams or columns, and fixedly connect the lower end face of the mother node 61 and the upper end face of the child node 63 with the beam or column to be connected.

[0076] In the present invention, a circular hole-shaped concave platform 6101 is provided at the upper end of the mother node 61, a plurality of mother node circular holes 6102 are provided on the upper side wall, and a mother node groove 6103 is provided inside the mother node 61; a cylindrical boss 6301 is provided at the lower end of the child node 63, a plurality of child node U-shaped grooves 6302 are provided at the bottom of the cylindrical boss 6301, and a child node groove 6303 is provided inside the child node 63. The upper and lower ends of the F-shaped buckle 62 are provided with buckle bosses 6201, and a buckle bolt hole 6202 is provided in the middle. Both ends of the wedge 65 are provided with wedge bosses 6501, and a wedge bolt hole 6502 is provided in the middle. The circular hole-shaped concave platform 6101 of the mother node 61 is clamped with the cylindrical boss 6301 of the child node 63, so that the mother node and the child node are positioned in cooperation. The F-shaped buckles 62 and the wedges 65 are arranged alternately, and the buckle bosses 6201 and the wedge bosses 6501 at their upper and lower ends are respectively clamped with the mother node groove 6103 and the child node groove 6303. The mother node 61, the child node 63 and the wedge 65 are fixedly connected by a second bolt 66 passing through the mother node circular hole 6102, the child node U-shaped groove 6302 and the wedge bolt hole 6502; the mother node 61, the child node 63 and the F-shaped buckle 62 are fixedly connected by a first bolt 64 passing through the mother node circular hole 6102, the child node U-shaped groove 6302 and the buckle bolt hole 6202. The above structural settings enable the connection between the mother node and the child node to be locked by using a wedge and an F-shaped buckle, and the mother node circular hole 6102 on the side wall and the child node U-shaped groove 6302 are combined with screws and bolt holes for positioning and locking, so as to firmly connect the mother node and the child node together.

[0077] The first bolt 64 can be an internal hexagonal socket head cap bolt, and the second bolt 66 can be an external hexagonal bolt. When it is necessary to assemble the beams or columns to be connected together, only one node of this embodiment needs to be installed between the two beams or columns. The mother node 61 and the child node 63 can be directly welded to the two beams or columns to be connected, or the mother node 61 and the child node 63 can be respectively welded to plates or other connecting components according to the different cross-sections of the beams or columns and then welded to the beams or columns together.

[0078] In the specific installation and specific implementation manner of each component of the steel structure quick connection and positioning node in this embodiment are as follows:

[0079] 1. The F-shaped buckles 62 are respectively placed into the mother node 61 by clamping the buckle bosses 6201 into the mother node groove 6103;

[0080] 2. An internal hexagonal socket head cap bolt is passed through the mother node circular hole 6102 on the side of the mother node 61 and screwed into the buckle bolt hole 6202 of the F-shaped buckle 62, and be careful not to tighten it;

[0081] 3. The wedges 65 are respectively placed into the mother node 61 by clamping the wedge bosses 6501 into the mother node groove 6103;

[0082] 4. Pass the external hexagon bolt through the round hole 6102 of the female node on the side of the female node 61 and screw it into the wedge bolt hole 6502 of the inclined wedge 65. Note not to tighten it.

[0083] 5. Through the positioning and snap connection of the round hole-shaped concave platform 6101 of the female node and the cylindrical convex platform of the male node, place the male node 63 into the female node 61, so that the U-shaped groove of the male node is snap-connected to the external hexagon bolt and the internal hexagon socket head bolt.

[0084] 6. Tighten the internal hexagon socket head bolt and the external hexagon bolt respectively, so that the female node 61 and the male node 63 are fastened together by the F-shaped buckle 62 and the inclined wedge 65 through the bolt.

[0085] 7. During construction, when it is necessary to install and assemble the beam or column to be connected, only need to directly weld the upper end face of the female node 61 and the lower end face of the male node 63 with the beam or column to be connected, or weld them with the beam or column through other connecting parts.

[0086] For the quick connection and positioning node of the steel structure in this embodiment, the F-shaped buckle 62 locks the female node 61 and the male node 63 together, and the inclined wedge 65 presses the F-shaped buckle 62 tightly against the female node 61 and the male node 63, changing the original bolt connection between the beam or column into a buckle-type force-bearing connection, optimizing the node connection positioning and force-bearing method, and at the same time making the operation of the beam or column in the node connection installation simple, time-saving, and effectively improving the installation efficiency.

[0087] The above is only the preferred embodiment of the present invention. For those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can still be made, and these should also be regarded as the protection scope of the present invention.

[0088] The components used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. For those parts whose specific connection methods are not described, the mature bolt, rivet, welding and other conventional means in the prior art are adopted. The machines and equipment all adopt the conventional models in the prior art, and the circuit connection of the equipment adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those of ordinary skill in the art.

[0089] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features.

[0090] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. An exterior wall structure of a prefabricated building, characterized in that, it includes a cross beam (1), an L-shaped node structure (2), a T-shaped node structure (3), a cross-shaped node structure (4), a column (5), a column connection node (6), a floor slab body (7), an exterior wall panel (10), a thermal insulation board (20) and a window sill board (30). The cross beam (1), the L-shaped node structure (2), the T-shaped node structure (3) and the cross-shaped node structure (4) form a main beam unit in the shape of a Chinese character 'tian' (field). The cross-shaped node structure (4) is located at the center of the 'tian' character, the L-shaped node structures (2) are located at the four corners of the 'tian' character, and the T-shaped node structures (3) are located in the middle of the sides of the 'tian' character. Cross beams (1) are connected between the L-shaped node structure (2) and the T-shaped node structure (3), and between the T-shaped node structure (3) and the cross-shaped node structure (4). The L-shaped node structure (2), the T-shaped node structure (3) and the cross-shaped node structure (4) all include a square columnar frame body (11) and a connecting seat (12). Among them, the two connecting seats (12) of the L-shaped node structure (2) are arranged on two adjacent side walls of the columnar frame body (11), the three connecting seats (12) of the T-shaped node structure (3) are sequentially arranged on three adjacent side walls of the columnar frame body (11), the four connecting seats (12) of the cross-shaped node structure (4) are respectively arranged on the four side walls of the columnar frame body (11). The connecting seat (12) is in a stepped shape distributed downward, and the connecting seat (12) is a frame structure. A connecting hole (13) for connecting and fixing with the cross beam (1) is arranged on the connecting seat (12). The connecting seat (12) is a frame structure with one side open, and the open side of the frame structure is used for screwing the connecting bolts on the connecting surface. Two supporting platforms (14) are annularly arranged on the side wall of the columnar frame body (11). The two supporting platforms (14) are distributed up and down, and the two supporting platforms (14) are respectively aligned with the upper and lower ends of the connecting seat (12); Columns (5) are sleeved on the upper and lower ends of the columnar frame body (11). The columns (5) are limited by the supporting platforms (14). A column connection node (6) is arranged on the column (5). The column connection node (6) includes a mother node (61), a son node (63), a plurality of F-shaped fasteners (62) and a plurality of inclined wedges (65). The mother node (61) and the son node (63) are embedded and locked into a whole through the plurality of F-shaped fasteners (62) and the plurality of inclined wedges (65). The outer end surfaces of the mother node (61) and the son node (63) are fixedly connected to the beam or column to be connected; A plurality of the floor slab bodies (7) are matched, spliced and fixed on the cross beam (1) to form a floor slab connection structure; the floor slab body (7) is in a square plate-like structure, one side of the floor slab body (7) is provided with a stepped connection end (8), and a plurality of holes (9) are sequentially arranged along the edge direction on the other three sides. The holes (9) are counterbore structures, and the holes (9) on the other three sides of the floor slab body (7) are fixed to the cross beam (1) through bolts. Holes (9) are arranged on each stepped surface of the connection end (8), and the stepped connection ends (8) of two adjacent floor slab bodies (7) can be matched, connected and fixed together; An exterior wall panel (10) is arranged between the outer side surfaces of the cross beam (1) and the column (5). The exterior wall panel (10) includes an exterior wall panel body (101), an exterior wall panel column (102) and an exterior wall panel cross beam (103). The exterior wall panel body (101) is in a square plate-like structure, and a plurality of connecting pieces (104) are arranged on the four side edges of the exterior wall panel body (101). The connecting pieces (104) are in an L shape, and the connecting pieces (104) are symmetrically arranged on both sides of the exterior wall panel body (101). Long holes (105) are arranged at the relative positions of the connecting pieces (104) on both sides of the exterior wall panel body (101). Threaded connection holes (106) are arranged at the positions corresponding to the connecting pieces (104) on the exterior wall panel column (102) and the exterior wall panel cross beam (103). The threaded connection holes (106) are located between two connecting pieces (104), and the threaded connection holes (106) correspond to the long holes (105) on the connecting pieces (104). The threaded connection holes (106) and the long holes (105) are connected together through bolts (107); A heat preservation board (20) is arranged outside the exterior wall panel (10). The heat preservation board (20) includes J-shaped purlins (202) and an external heat preservation board (203). A plurality of J-shaped purlins (202) are horizontally fixed on the exterior wall panel (10). The plurality of J-shaped purlins (202) are equally spaced in the vertical direction. A groove (204) is arranged on the lower end surface of the external heat preservation board (203). The groove (204) can be matched and clamped on the lower vertical plate of the J-shaped purlin (202). A plurality of external heat preservation boards (203) are horizontally arranged between two adjacent J-shaped purlins (202). The lower end of the external heat preservation board (203) is clamped on the lower vertical plate of the lower J-shaped purlin (202) through the groove (204). The upper end of the external heat preservation board (203) abuts against the lower horizontal plate of the upper J-shaped purlin (202). The upper end surface of the external heat preservation board (203) and the lower horizontal plate of the upper J-shaped purlin (202) are connected and fixed through screws (205); A window sill hole is reserved on the outer side of the exterior wall panel (10). A window sill plate (30) is arranged around the outer side of the window sill hole. The window sill plate (30) includes an upper window sill plate (301), a lower window sill plate (302), left and right window sill plates (303), and a support hanger (304). The support hanger (304) is fixedly arranged on the window sill exterior wall panel (305). The lower window sill plate (302) is horizontally and fixedly arranged on the support hanger (304). The left and right window sill plates (303) are symmetrically arranged at the left and right ends of the lower window sill plate (302). The upper window sill plate (301) is fixedly arranged at the upper ends of the left and right window sill plates (303). The upper window sill plate (301), the lower window sill plate (302), and the left and right window sill plates (303) cooperate to form a closed window sill structure; The mother node (61) and the child node (63) are directly welded to or welded together through a connecting component with two beams or columns to be connected; The cross beam (1) is a frame structure with an opening on one side. End connection seats (21) are arranged at both ends of the cross beam (1), and the end connection seats (21) are in an inverted stepped shape.

2. The exterior wall structure of a prefabricated building according to claim 1, characterized in that, A circular hole-shaped concave platform (6101) is provided at the upper end of the mother node (61), and a plurality of mother node circular holes (6102) are provided on the side wall of the upper end. A mother node groove (6103) is provided inside the mother node (61); A cylindrical convex platform (6301) is provided at the lower end of the child node (63), and a plurality of child node U-shaped grooves (6302) are provided at the bottom of the cylindrical convex platform (6301). A child node groove (6303) is provided inside the child node (63); Snap protrusions (6201) are provided at the upper and lower ends of the F-shaped snap (62); Wedge protrusions (6501) are provided at both ends of the wedge (65), and a wedge bolt hole (6502) is provided in the middle; The circular hole-shaped concave platform (6101) of the mother node (61) is clamped with the cylindrical convex platform (6301) of the child node (63). The F-shaped snaps (62) and the wedges (65) are arranged alternately, and the snap protrusions (6201) and the wedge protrusions (6501) at their upper and lower ends are respectively clamped with the mother node groove (6103) and the child node groove (6303). The mother node (61), the child node (63), and the wedge (65) are fixedly connected by a second bolt (66) passing through the mother node circular hole (6102), the child node U-shaped groove (6302), and the wedge bolt hole (6502).

3. The exterior wall structure of a prefabricated building according to claim 1, characterized in that, A snap bolt hole (6202) is provided in the middle of the F-shaped snap (62). The mother node (61), the child node (63), and the F-shaped snap (62) are fixedly connected by a first bolt (64) passing through the mother node circular hole (6102), the child node U-shaped groove (6302), and the snap bolt hole (6202).

4. The exterior wall structure of a prefabricated building according to claim 3, characterized in that, The first bolt (64) is an internal hexagonal socket head cap bolt.

5. The outer wall structure of a prefabricated building according to claim 2, characterized in that, the second bolt (66) is an external hexagon bolt.

6. The outer wall structure of a prefabricated building according to claim 1, characterized in that, the end connection seat (21) is connected to the connection seat (12) in a matching manner. The end connection seat (21) is a frame structure, and a connection through hole (23) for connecting and fixing to the connection seat (12) is provided on the end connection seat (21). Moreover, the end connection seat (21) is a frame structure with one side open, and the open side of the frame structure is used for screwing the connection bolts on the connection surface.

7. The outer wall structure of a prefabricated building according to claim 1, characterized in that, the stepped structures of the connection seat (12) and the end connection seat (21) have at least two layers for mutual matching support and fixation.

8. The outer wall structure of a prefabricated building according to claim 6, characterized in that, the cylindrical frame body (11), the connection seat (12) and the support platform (14) are either integrally formed or fixed by welding, and the end connection seat (21) and the cross beam (1) are integrally formed.

9. The outer wall structure of a prefabricated building according to claim 6, characterized in that, a reinforcing rib plate (24) for strengthening the structure is provided inside the frame structure of the end connection seat (21).

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