Unit modularized outer wall structure and outer wall system

Abstract

The utility model relates to the technical field of assembly type steel structure buildings, in particular to a unit modularization outer wall structure and an outer wall system.The unit modularization outer wall structure comprises a corner wall module, a window wall module, a flat wall module and a door wall module, and the corner wall module, the window wall module, the flat wall module and the door wall module are combined to form the outer wall structure; the outer wall structure comprises a plurality of module single bodies, each module single body comprises a purline module and an outer wall plate module, and the purline modules and the outer wall plate modules are connected through first connecting pieces. The unit modularized outer wall system is used for mounting each module of the outer wall structure on the main body steel frame structure through a second connecting piece; the outer wall structure is divided into a plurality of modules, and the modules are assembled on the main body steel frame structure through the second connecting pieces, so that the problems that in the prior art, outer wall plates and purlines are separately assembled, so that outer wall plates are not matched, and a pressure-bearing wall plate on the inner side of an assembly type steel structure pressurization building cannot be operated from the indoor side are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated steel structure buildings, and particularly relates to a unit modular exterior wall structure and an exterior wall system. Background Art

[0002] The wall structure of a prefabricated steel structure pressurized building is different from that of an ordinary prefabricated steel structure building. The wall structure of a prefabricated steel structure pressurized building further includes a pressure-bearing steel formwork. When the exterior wall module of an ordinary prefabricated steel structure building is installed with the main steel frame structure, it can be connected by bolts and adjusted for balance from the indoor side of the building. However, for a prefabricated steel structure pressurized building, before the construction of the exterior wall panel, the pressure-bearing steel formwork has been installed, and there is no space for construction operation from the indoor side of the building, so it is impossible to fix and adjust the exterior wall module from the indoor side. In addition, the existing exterior wall module is composed of purlins and exterior wall panels separately, and it is easy to have mismatched joints between the wall panels during assembly. In addition, for window openings and door openings, edge sealing treatment is required during assembly, resulting in low on-site installation efficiency, extended construction period, and increased cost.

[0003] In summary, there is an urgent need to provide a unit modular exterior wall structure and an exterior wall system to solve the problems existing in the prior art. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a unit modular exterior wall structure and an exterior wall system, and the specific technical solutions are as follows:

[0005] A unit modular exterior wall structure includes a corner wall module, a window wall module, a flat wall module, and a door wall module. The corner wall module, the window wall module, the flat wall module, and the door wall module are combined to form an exterior wall structure. The corner wall module, the window wall module, the flat wall module, and the door wall module all include a plurality of module monomers. The module monomer includes a purlin module and an exterior wall panel module, and the purlin module and the exterior wall panel module are connected by a first connecting member.

[0006] Further, the purlin module includes a border purlin and inner purlins. A plurality of the border purlins form a frame structure, and a plurality of the inner purlins are cross-arranged in the frame structure.

[0007] The exterior wall panel module adopts a metal plate composite thermal insulation and decoration integrated board, and the cavity between the purlin module and the exterior wall panel module is filled with thermal insulation materials.

[0008] Further, the first connecting member includes an inner support member and a tie member. The inner support member connects the exterior wall panel module and the border purlin at the lower part of the purlin module, and the tie member connects the exterior wall panel module and the border purlin at the upper part of the purlin module and the exterior wall panel module and the border purlin at the side part of the purlin module.

[0009] Further, the inner support member is a Z-shaped metal member, and a stiffening plate is provided at the bent portion of the Z-shaped metal member;

[0010] The tie member is a V-shaped metal member. Both sides of the V-shaped metal member are connected to the exterior wall panel module, and the corner portion of the V-shaped metal member is connected to the frame purlin;

[0011] Both the inner support member and the tie member are made of hot-dip galvanized steel sheets.

[0012] Further, the corner of the corner wall module is formed by folding the metal plate composite thermal insulation and decoration integrated board; the metal plate composite thermal insulation and decoration integrated board at the edge of the window opening of the window wall module is connected to the purlin module through folding; the metal plate composite thermal insulation and decoration integrated board at the edge of the door opening of the door wall module is connected to the purlin module through folding.

[0013] A unit modular exterior wall system includes a main steel frame structure and the unit modular exterior wall structure as described above. The unit modular exterior wall structure is connected to the main steel frame structure through a second connecting member.

[0014] Further, the second connecting member includes an upper hanging member and a lower hanging member. The upper hanging member includes hanging member A and hanging member B, and the lower hanging member includes hanging member C and hanging member D;

[0015] Hanging member B is fixed to the upper part of the purlin module, hanging member D is fixed to the lower part of the purlin module, hanging member A is fixed to the corresponding position on the main steel frame structure opposite to hanging member B, and hanging member C is fixed to the corresponding position on the main steel frame structure opposite to hanging member D; Hanging member A cooperates with hanging member B, and hanging member C cooperates with hanging member D to realize the connection between the module monomer and the main steel frame structure.

[0016] Further, hanging member A is an angle steel, and an oblong hole one is provided on the single-side flange plate of the angle steel. The connection line between the centers of the two arcs on the oblong hole one is perpendicular to the folded edge of the angle steel;

[0017] A triangular stiffening plate is further provided on hanging member A. The triangular stiffening plate is arranged at the middle position on the outer side of the flange plate with the oblong hole one. There are two oblong holes one, which are respectively located on both sides of the triangular stiffening plate.

[0018] Further, hanging member B is an angle steel, and an oblong hole two is provided on the single-side flange plate of the angle steel. The connection line between the centers of the two arcs on the oblong hole two is parallel to the folded edge of the angle steel; The center point of the oblong hole one corresponds to the center point of the oblong hole two, and a through bolt passes through the oblong hole one and the oblong hole two. The purlin module realizes the adjustment of the relative position in the horizontal direction with the main steel frame structure through the oblong hole one, the oblong hole two and the through bolt;

[0019] The flange plate of the hanger B is further provided with a threaded hole for inserting an adjusting screw rod, and the adjusting screw rod cooperates with the hanger A to realize the adjustment of the relative position of the purlin module and the main steel frame structure in the vertical direction;

[0020] A square stiffening plate is arranged between two ends of the flange plate of the hanger B.

[0021] Furthermore, the hanger C is made of an angle steel, and a triangular stiffening plate is arranged on the outer side of the single-sided flange plate of the angle steel; the hanger D is made of an angle steel, and threaded holes are preset on the hanger D.

[0022] Applying the technical solution of the present utility model has the following beneficial effects:

[0023] (1) The present utility model provides a unit modular exterior wall structure, including a corner wall module, a window wall module, a flat wall module and a door wall module. The corner wall module, the window wall module, the flat wall module and the door wall module are combined to form an exterior wall structure; the corner wall module, the window wall module, the flat wall module and the door wall module all include a plurality of module monomers, and each module monomer includes a purlin module and an exterior wall panel module, and the purlin module and the exterior wall panel module are connected by a first connecting member. By dividing the exterior wall structure into several modules, each module monomer includes a purlin module and an exterior wall panel module, and the purlin module and the exterior wall panel module are connected by a first connecting member. During subsequent assembly, only multiple modules need to be assembled, which solves the problem in the prior art that the exterior wall panels and purlins are assembled separately, resulting in mismatched joints between the exterior wall panels.

[0024] (2) In the present utility model, the corner of the corner wall module is formed by folding the metal plate composite thermal insulation and decoration integrated board; the metal plate composite thermal insulation and decoration integrated board at the edge of the window opening of the window wall module is connected to the purlin module by folding; the metal plate composite thermal insulation and decoration integrated board at the edge of the door opening of the door wall module is connected to the purlin module by folding. Through the folding of the metal plate composite thermal insulation and decoration integrated board in cooperation with the purlin module, a three-dimensional wall panel structure is formed. During subsequent assembly, it meets the requirements of heat preservation and sealing around the door and window openings and the decoration of the external wall structure of the prefabricated steel structure pressurized building at the external wall structure of the prefabricated steel structure pressurized building, and there is no need to separately seal the edges, greatly improving the construction efficiency.

[0025] (3) The present utility model provides a unit modular exterior wall system, including a main steel frame structure and the unit modular exterior wall structure as described above. The unit modular exterior wall structure is connected to the main steel frame structure through a second connecting member. By providing the second connecting member, the installation and leveling of the unit modular exterior wall structure can be realized by operating from the outdoor side, adapting to the difficult problem that there are pressure-bearing wall panels inside the prefabricated steel structure pressurized building and it is not possible to operate from the indoor side.

[0026] In addition to the purposes, features and advantages described above, the present utility model has other purposes, features and advantages. The following will refer to the drawings to further elaborate on the present utility model in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0028] Figure 1 is the planar development view of the unit modular exterior wall structure in the embodiment of the present utility model;

[0029] Figure 2 is the developed external elevation view of the unit modular exterior wall structure;

[0030] Figure 3 is the developed internal elevation view of the unit modular exterior wall structure;

[0031] Figure 4 is the vertical sectional view of the unit modular exterior wall structure, wherein, Figure 4 a is the vertical sectional view of the flat wall module, Figure 4 b is the vertical sectional view of the window wall module, Figure 4 c is the vertical sectional view of the door wall module;

[0032] Figure 5 is the structural schematic diagram of the inner support member, wherein, Figure 5 a is the top view, Figure 5 b is the side view;

[0033] Figure 6 is the structural schematic diagram of the tie member, wherein, Figure 6 a is the top view, Figure 6 b is the side view;

[0034] Figure 7 is the structural schematic diagram of the hanging part A, wherein, Figure 7 a is the top view, Figure 7 b is the sectional view;

[0035] Figure 8 is the structural schematic diagram of the hanging part B, wherein, Figure 8 a is the top view, Figure 8 b is the sectional view;

[0036] Figure 9 is the vertical sectional structural schematic diagram of the unit modular exterior wall system in the embodiment of the present utility model;

[0037] Figure 10 is the structural schematic diagram of the hanging part C, wherein, Figure 10 a is the top view,Figure 10 b is a side view, Figure 10 c is a sectional view;

[0038] Figure 11 It is a schematic structural diagram of the hanging part D, where, Figure 11 a is a top view, Figure 11 b is a sectional view;

[0039] Among them, 1. Corner wall module, 2. Window wall module, 3. Flat wall module, 4. Door wall module, 5. Purlin module, 5.1. Frame border purlin, 5.2. Inner-frame purlin, 6. Outer wall panel module, 7. Inner support, 7.1. Stiffening plate, 8. Tie member, 8.1. Rivet, 9. Main steel frame structure, 10. Upper hanging part, 10.1. Hanging part A, 10.1.1. Oval hole one, 10.1.2. Triangular stiffening plate, 10.2. Hanging part B, 10.2.1. Oval hole two, 10.2.2. Square stiffening plate, 10.3. Adjusting screw, 10.4. Threaded hole, 10.5. Through bolt, 11. Lower hanging part, 11.1. Hanging part C, 11.2. Hanging part D, 12. Bearing steel formwork. Detailed implementation manners

[0040] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in many different ways defined and covered by the claims.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0042] In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0043] Embodiment

[0044] Refer to Figures 1 - 3, this embodiment provides a unit modular exterior wall structure, including a corner wall module 1, a window wall module 2, a flat wall module 3, and a door wall module 4. The corner wall module 1, the window wall module 2, the flat wall module 3, and the door wall module 4 are combined to form an exterior wall structure. The corner wall module 1, the window wall module 2, the flat wall module 3, and the door wall module 4 all include a plurality of module monomers, and each module monomer includes a purlin module 5 and an exterior wall panel module 6. The purlin module 5 and the exterior wall panel module 6 are connected by a first connecting member.

[0045] In this embodiment, by dividing the exterior wall structure into several modules, each module monomer includes a purlin module 5 and an exterior wall panel module 6. The purlin module 5 and the exterior wall panel module 6 are connected by a first connecting member. During subsequent assembly, only multiple modules need to be assembled, solving the problem in the prior art that the exterior wall panels and purlins are assembled separately, resulting in mismatched joints between the exterior wall panels.

[0046] See Figure 3 , the purlin module 5 includes a border purlin 5.1 and inner purlins 5.2. Multiple border purlins 5.1 form a frame structure, and multiple inner purlins 5.2 are cross - arranged within the frame structure. In this embodiment, both the border purlin 5.1 and the inner purlins 5.2 are made of square steel purlins, and the outer diameter of the border purlin 5.1 is larger than the outer diameter of the inner purlins 5.2.

[0047] In this embodiment, the exterior wall panel module 6 uses a metal - plate composite thermal insulation and decoration integrated board.

[0048] The cavity between the purlin module 5 and the exterior wall panel module 6 is filled with thermal insulation materials. The cavity between the purlin module 5 and the exterior wall panel module 6 includes the cavity formed by multiple purlins and the cavity between the purlins and the exterior wall panel module 6. The filling measure of the thermal insulation materials can be bonding with a special adhesive. The thermal insulation materials are determined according to the fire - resistance requirements and energy - saving requirements of the building, and materials with Class A fire - resistance and good thermal insulation effects, such as rock wool, are preferably selected.

[0049] In this embodiment, see Figure 5 and Figure 6 , the first connecting member includes an inner support 7 and a tie member 8. The inner support 7 connects the lower side position of the exterior wall panel module 6 to the border purlin 5.1 at the lower part of the purlin module 5, and the tie member 8 connects the upper side position of the exterior wall panel module 6 to the border purlin 5.1 at the upper part of the purlin module 5 and the side position of the exterior wall panel module 6 to the border purlin 5.1 at the side part of the purlin module 5.

[0050] In this embodiment, see Figure 5 a and Figure 5b. The inner support member 7 is made of a Z-shaped metal member. A stiffening plate 7.1 is provided at the bent portion of the Z-shaped metal member to prevent the inner support member 7 from deforming. Through holes are reserved on the inner support member 7. During assembly, one end of the inner support member 7 is connected to the purlin module 5 by screws, and the other end of the inner support member 7 is connected to the metal plate composite thermal insulation and decoration integrated board by rivets.

[0051] See Figure 6 a and Figure 6 b. The tie member 8 is made of a V-shaped metal member. Both sides of the V-shaped metal member are connected to the exterior wall panel module 6, and the folded corner portion of the V-shaped metal member is connected to the frame purlin 5.1. Preferably, the tie member 8 is connected to the exterior wall panel module 6 and the frame purlin 5.1 by rivets 8.1. Using a V-shaped metal member for tying can effectively cope with the displacement between the purlin module 5 and the exterior wall panel module 6, enhance the connection, and ensure the stability of the connection between the exterior wall panel module 6 and the purlin module 5.

[0052] Both the inner support member 7 and the tie member 8 are made of hot-dip galvanized steel plates to ensure that the structural strength of the inner support member 7 and the tie member 8 meets the requirements.

[0053] In this embodiment, see Figure 1 、 Figure 2 、 Figure 3 and Figure 4 a- Figure 4 c. The window-wall module 2 further includes a pressure-bearing energy-saving integrated window. The metal plate composite thermal insulation and decoration integrated board at the edge of the window opening corresponding to the pressure-bearing energy-saving integrated window is connected to the purlin module 5 through a folded edge. When installing the window-wall module 2, the end of the folded edge contacts the pressure-bearing steel formwork 12. The door-wall module 4 includes a steel pressure-bearing door. The metal plate composite thermal insulation and decoration integrated board at the edge of the door opening corresponding to the steel pressure-bearing door is connected to the purlin module 5 through a folded edge. When installing the door-wall module 4, the end of the folded edge contacts the pressure-bearing steel formwork 12. The corner of the corner wall module 1 is formed by folding the metal plate composite thermal insulation and decoration integrated board. In this embodiment, through the folded edge of the metal plate composite thermal insulation and decoration integrated board cooperating with the purlin module 5, a three-dimensional wallboard structure is formed, which meets the requirements of heat preservation and sealing around the door and window openings and the decoration of the folded edge at the external corner of the exterior wall structure of the prefabricated steel structure pressurized building during subsequent assembly, eliminating the need for separate edge sealing and greatly improving the construction efficiency.

[0054] See Figures 7 - 11 , this embodiment provides a unit modular exterior wall system, including a main steel frame structure 9 and the unit modular exterior wall structure as described above. The unit modular exterior wall structure is connected to the main steel frame structure 9 through a second connecting member. By providing the second connecting member, the installation and leveling of the unit modular exterior wall structure can be achieved by operating from the outdoor side, adapting to the difficult problem that there are pressure-bearing wallboards on the inner side of the prefabricated steel structure pressurized building and it is not possible to operate from the indoor side.

[0055] Specifically, the second connecting member includes an upper hanging member 10 and a lower hanging member 11. The upper hanging member 10 includes a hanging member A 10.1 and a hanging member B 10.2, and the lower hanging member 11 includes a hanging member C 11.1 and a hanging member D 11.2;

[0056] See Figure 9 , the hanging member B 10.2 is fixed to the upper part of the purlin module 5, the hanging member D 11.2 is fixed to the lower part of the purlin module 5, the hanging member A 10.1 is fixed to a position on the main steel frame structure 9 corresponding to the hanging member B 10.2, and the hanging member C 11.1 is fixed to a position on the main steel frame structure 9 corresponding to the hanging member D 11.2; the hanging member A 10.1 cooperates with the hanging member B 10.2, and the hanging member C 11.1 cooperates with the hanging member D 11.2 to realize the connection between the module monomer and the main steel frame structure 9. In this embodiment, the fixing method of the hanging member B 10.2 and the hanging member D 11.2 to the purlin module 5 is welding, and the fixing method of the hanging member A 10.1 and the hanging member C 11.1 to the main steel frame structure 9 is welding.

[0057] See Figure 7 a and Figure 7 b, the hanging member A 10.1 is made of angle steel. An oblong hole one 10.1.1 is provided on one side flange plate of the angle steel, and the connection line between the centers of the two arcs on the oblong hole one 10.1.1 is perpendicular to the angle steel flange;

[0058] The hanging member A 10.1 is also provided with a triangular stiffening plate 10.1.2, and the triangular stiffening plate 10.1.2 is arranged at the middle position on the outer side of the flange plate with the oblong hole one 10.1.1, so as to facilitate the operation and fixation of the through bolts 10.5 from both sides of the triangular stiffening plate 10.1.2. There are two oblong holes one 10.1.1, which are respectively located on both sides of the triangular stiffening plate 10.1.2.

[0059] See Figure 8 a and Figure 8 b, the hanging member B 10.2 is made of angle steel. An oblong hole two 10.2.1 is provided on one side flange plate of the angle steel, and the connection line between the centers of the two arcs on the oblong hole two 10.2.1 is parallel to the angle steel flange; the center point of the oblong hole one 10.1.1 corresponds to the center point of the oblong hole two 10.2.1, and the through bolts 10.5 penetrate through the oblong hole one 10.1.1 and the oblong hole two 10.2.1. The purlin module 5 realizes the adjustment of the relative position with the main steel frame structure 9 in the horizontal direction through the oblong hole one 10.1.1, the oblong hole two 10.2.1 and the through bolts 10.5;

[0060] A threaded hole 10.4 for inserting an adjusting screw 10.3 is further provided on the flange plate of the hanging part B10.2. The bottom end of the adjusting screw 10.3 abuts against the hanging part A10.1, and a steel gasket is also provided at the corresponding position on the hanging part A10.1 to support the adjusting screw 10.3 and fix the position; by rotating the adjusting screw 10.3, the relative position of the purlin module 5 and the main steel frame structure 9 in the vertical direction can be adjusted.

[0061] It should be noted that the relative positions in the horizontal direction and the vertical direction described above are based on the left - right direction, the front - back direction (the left - right direction and the front - back direction are the horizontal direction), and the up - down direction (the vertical direction) of the unit modular exterior wall structure shown in the appendix Figure 9 relative to the main steel frame structure 9 for position adjustment.

[0062] In this embodiment, preferably, a square stiffening plate 10.2.2 is provided between the two ends of the flange plate of the hanging part B10.2 to prevent the hanging part B10.2 from deforming; the setting position of the square stiffening plate 10.2.2 is staggered from the setting position of the triangular stiffening plate 10.1.2 to facilitate the connection between the hanging part A10.1 and the hanging part B10.2.

[0063] See Figure 9 , in this embodiment, the outer contour size of the hanging part A10.1 is smaller than the inner contour size of the hanging part B10.2. When the hanging part A10.1 and the hanging part B10.2 are assembled in cooperation, the hanging part A10.1 is inserted into the cavity of the hanging part B10.2.

[0064] In this embodiment, see Figure 10 a - Figure 10 c, the hanging part C11.1 is made of angle steel, and a triangular stiffening plate 10.1.2 is provided on the outer side of the single - side flange plate of the angle steel to prevent the hanging part C11.1 from deforming; see Figure 11 a and Figure 11 b, the hanging part D11.2 is made of angle steel, the hanging part C11.1 and the hanging part D11.2 are connected by self - tapping screws, and threaded holes are preset on the hanging part D11.2.

[0065] Specifically, the fixing hangers A10.1 and C11.1 are welded at the corresponding positions on one side of the main steel frame structure 9, the fixing hangers B10.2 are welded to the purlins above the module unit, and the fixing hangers D11.2 are welded to the purlins below the module unit. The position of hanger A10.1 corresponds to the position of hanger B10.2, and the position of hanger C11.1 corresponds to the position of hanger D11.2. In order to reserve the adjustment gap between the module units and the installation space of the hangers, the horizontal frame purlins 5.1 above and below the module units are retracted by a certain gap compared with the metal plate composite insulation decorative integrated board. During installation, after hoisting a module unit, it can be temporarily hung on the hanger A10.1 through the hanger B10.2. After installing the through bolts 10.5 and the adjusting screw 10.3, remove the hanging point; above the module unit, the adjusting screw 10.3 is used to support the hanger A10.1 to adjust the displacement of the module unit in the up and down directions; the displacement of the module unit in the left and right directions and the front and back directions is adjusted through the waist hole 10.1.1, the waist hole 2 10.2.1 and the through bolt 10.5; after adjusting the balance, tighten the through bolt 10.5 with the nut; fix the hanger C11.1 and the hanger D11.2 with self-tapping screws.

[0066] To facilitate assembly, gaps are left between each module unit. After the module units are assembled, the gaps are sealed with insulation materials and sealants.

[0067] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A unit modular exterior wall structure, characterized in that, It includes a corner wall module (1), a window wall module (2), a flat wall module (3) and a door wall module (4). The corner wall module (1), the window wall module (2), the flat wall module (3) and the door wall module (4) are combined to form an exterior wall structure. The corner wall module (1), the window wall module (2), the flat wall module (3) and the door wall module (4) all include a plurality of module monomers. The module monomer includes a purlin module (5) and an exterior wall panel module (6). The purlin module (5) and the exterior wall panel module (6) are connected by a first connecting piece.

2. The unit modular exterior wall structure according to claim 1, characterized in that, The purlin module (5) includes a border purlin (5.1) and inner purlins (5.2). A plurality of the border purlins (5.1) form a frame structure, and a plurality of the inner purlins (5.2) are cross - arranged within the frame structure. The exterior wall panel module (6) adopts a metal - plate composite thermal insulation and decoration integrated board. The cavity between the purlin module (5) and the exterior wall panel module (6) is filled with thermal insulation materials.

3. The unit modular exterior wall structure according to claim 2, characterized in that, The first connecting piece includes an inner support (7) and a tie piece (8). The inner support (7) connects the exterior wall panel module (6) to the border purlin (5.1) at the lower part of the purlin module (5), and the tie piece (8) connects the exterior wall panel module (6) to the border purlin (5.1) at the upper part of the purlin module (5) and the border purlin (5.1) at the side part of the purlin module (5).

4. The unit modular exterior wall structure according to claim 3, characterized in that, The inner support (7) adopts a Z - shaped metal piece, and a stiffening plate (7.1) is provided at the bent part of the Z - shaped metal piece. The tie piece (8) adopts a V - shaped metal piece. Both sides of the V - shaped metal piece are connected to the exterior wall panel module (6), and the folded - angle part of the V - shaped metal piece is connected to the border purlin (5.1). Both the inner support (7) and the tie piece (8) adopt hot - dip galvanized steel plates.

5. The unit modular exterior wall structure according to any one of claims 2-4, characterized in that, The corner of the corner wall module (1) is formed by folding the edge of the metal - plate composite thermal insulation and decoration integrated board. The metal - plate composite thermal insulation and decoration integrated board at the edge of the window opening of the window wall module (2) is connected to the purlin module (5) by folding the edge. The metal - plate composite thermal insulation and decoration integrated board at the edge of the door opening of the door wall module (4) is connected to the purlin module (5) by folding the edge.

6. A unit modular exterior wall system, characterized in that, It includes a main steel frame structure (9) and the unit modular exterior wall structure as described in any one of claims 1 - 5. The unit modular exterior wall structure is connected to the main steel frame structure (9) by a second connecting piece.

7. The unit modular exterior wall system according to claim 6, characterized in that, The second connecting piece includes an upper hanging piece (10) and a lower hanging piece (11). The upper hanging piece (10) includes a hanging piece A (10.1) and a hanging piece B (10.2), and the lower hanging piece (11) includes a hanging piece C (11.1) and a hanging piece D (11.2). The hanging part B (10.2) is fixed to the upper part of the purlin module (5), the hanging part D (11.2) is fixed to the lower part of the purlin module (5), the hanging part A (10.1) is fixed to the main steel frame structure (9) at a position corresponding to the hanging part B (10.2), and the hanging part C (11.1) is fixed to the main steel frame structure (9) at a position corresponding to the hanging part D (11.2); the hanging part A (10.1) cooperates with the hanging part B (10.2), and the hanging part C (11.1) cooperates with the hanging part D (11.2) to realize the connection between the module unit and the main steel frame structure (9).

8. The unit modular exterior wall system according to claim 7, characterized in that, The hanging part A (10.1) is made of angle steel, and an oblong hole one (10.1.1) is arranged on one side flange plate of the angle steel. The connection line between the centers of the two arcs on the oblong hole one (10.1.1) is perpendicular to the angle steel folding edge; The hanging part A (10.1) is also provided with a triangular stiffening plate ( 10.1.2). The triangular stiffening plate (10.1.2) is arranged at the middle position on the outer side of the flange plate with the oblong hole one (10.1.1). There are two oblong holes one (10.1.1), which are respectively located on both sides of the triangular stiffening plate (10.1.2).

9. The unit modular exterior wall system according to claim 8, characterized in that, The hanging part B (10.2) is made of angle steel, and an oblong hole two (10.2.1) is arranged on one side flange plate of the angle steel. The connection line between the centers of the two arcs on the oblong hole two (10.2.1) is parallel to the angle steel folding edge; the center point of the oblong hole one (10.1.1) corresponds to the center point of the oblong hole two (10.2.1). The through bolt (10.5) is arranged through the oblong hole one (10.1.1) and the oblong hole two (10.2.1). The purlin module (5) realizes the adjustment of the relative position in the horizontal direction with the main steel frame structure (9) through the oblong hole one (10.1.1), the oblong hole two (10.2.1) and the through bolt (10.5); A threaded hole (10.4) for inserting an adjusting screw rod (10.3) is also arranged on the flange plate of the hanging part B (10.2). The adjusting screw rod (10.3) cooperates with the hanging part A (10.1) to realize the adjustment of the relative position in the vertical direction between the purlin module (5) and the main steel frame structure (9); A square stiffening plate (10.2.2) is arranged between the two ends of the flange plate of the hanging part B (10.2).

10. The unit modular exterior wall system according to any one of claims 7-9, characterized in that, The hanging part C (11.1) is made of angle steel, and a triangular stiffening plate (10.1.2) is arranged on the outer side of one side flange plate of the angle steel; the hanging part D (11.2) is made of angle steel, and threaded holes are preset on the hanging part D (11.2).

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