Prefabricated light steel house structure

Abstract

The present invention relates to a prefabricated light steel house structure, including a roof (4) and a wall (3). The roof (4) includes a triangular top keel frame (47), and both ends of the top keel frame (47) are sealed and provided with ventilation holes (6); the wall (3) includes a composite wall panel (31) and a C-shaped keel (33). The C-shaped keels (33) are arranged vertically at intervals and are connected to the top keel frame (47). An air inlet is provided on the composite wall panel (31) at the lower part of the wall (3). Through holes are arranged on the C-shaped keels (33) at intervals, and the cavities of adjacent C-shaped keels (33) are communicated with the internal cavity of the top keel frame (47). By providing ventilation holes (6) on the roof (4) and air inlets on the wall (3), and the cavities of the C-shaped keels (33) of the wall (3) are communicated, due to the action of atmospheric pressure, air flows along the wall (3) for heat exchange. It solves the problem that the heat dissipation capacity of the wall of the existing prefabricated house is poor, resulting in a high temperature in the whole house.

Description

Technical Field

[0001] The present invention relates to a prefabricated light steel house structure, belonging to the technical field of decoration and construction. Background Art

[0002] With the continuous improvement of people's living standards and the increasing emphasis on environmental protection by the country, relevant mandatory environmental protection regulations have been issued. Under such circumstances, the traditional decoration industry has been greatly impacted, especially reflected in the reduction of sand and gravel mining by the country, resulting in the price increase of building materials such as cement and river sand, and the continuous climbing of costs. In order to meet the environmental requirements, building bodies mainly made of steel, such as light steel villas, have emerged as the times require. For existing light steel houses, they mainly adopt steel structures, directly install color steel tiles on the roof through self-tapping screws, and install a ceiling on the inner side thereof. In order to soundproof and heat-insulate, a heat-insulating layer is installed on the ceiling, that is, on the upper end face of the steel structure. Specifically, calcium silicate boards are installed on the upper end of the steel structure roof, and the calcium silicate boards are fixed to the steel structure roof through screws, the heat-insulating layer is laid on the calcium silicate boards, and then the color steel tiles are fixed to the calcium silicate boards through screws. Calcium silicate boards have high hardness and good corrosion resistance and are widely used in the prefabricated decoration industry. However, calcium silicate boards have poor nail-holding ability, which can be understood as not being tightly connected to the screws, and the screws are prone to loosening after a long time, resulting in easy water seepage of the existing roof and unstable structure.

[0003] For the walls of light steel houses, C-shaped or U-shaped light steel keel columns are mainly arranged at equal intervals in the gaps between the columns, with the openings facing one side of the columns, and base plates (gypsum boards, magnesium oxychloride boards, etc.) are installed on both sides of the light steel keels at a spacing of less than 300 mm through self-tapping screws, thereby obtaining a hollow light steel wall. After the installation of the base plates on both sides is completed, insulating and heat-insulating materials (rock wool, glass wool, polyurethane cotton, etc.) are filled in the cavity of the wall structure. This structure results in a large amount of on-site material accumulation and complex installation procedures, causing a poor on-site environment. This method requires layer-by-layer construction, cannot be industrially produced, and has many procedures, requiring a high professional level of construction workers. At the same time, it is not convenient to handle and stack materials on site, resulting in low installation efficiency during construction and high labor costs.

[0004] For the floors of light steel houses, they are mainly supported by a support frame composed of steel structure support beams. An OSB board and a cement base layer are sequentially arranged on the support beams from bottom to top. The cement base layer is realized by laying a steel wire mesh and pouring cement mortar. In the actual installation process, it is necessary to construct layer by layer on the floor base layer to finally obtain a shock-absorbing and sound-insulating floor. The layer-by-layer construction method has many procedures and difficult positioning, resulting in repeated operations to ensure the flatness of the floor. This causes a long installation time, much time spent on handling materials, high labor costs, and high requirements for the working level of auxiliary workers, resulting in high installation costs.

[0005] At the same time, the heat dissipation problem of light steel houses has not been solved. At present, only by increasing the thickness of the walls and roofs and adding heat insulation materials can heat insulation be achieved, but this often results in high production costs. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that the existing prefabricated walls and roofs have poor heat dissipation capacity, resulting in a high temperature inside the whole house.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a prefabricated light steel house structure, including a roof and walls. The roof includes a top keel frame, a composite roof panel and purlins. The cross-section of the top keel frame is a triangular structure. Both ends of the top keel frame are sealed and provided with air exchange holes. The cross-section of the purlin is a channel-shaped structure, and the purlins are arranged at intervals on the two inclined planes at the upper end of the top keel frame. The composite roof panel is placed on adjacent purlins, and the composite roof panel, purlins and top keel frame are connected by screws;

[0008] The wall includes a composite wall panel, a connecting piece, a C-shaped keel and an overlapping tongue and groove wall panel. The C-shaped keels are arranged vertically at intervals, and the upper ends are connected to the top keel frame. The composite wall panel is arranged on the outer bent wall of the C-shaped keel through the connecting piece, and the overlapping tongue and groove wall panel is fixed on the inner bent wall of the C-shaped keel by screws. An air inlet is provided on the composite wall panel at the lower part of the wall. A number of through holes are arranged at intervals on the bottom surface of the C-shaped keel, and the cavities of adjacent C-shaped keels are communicated with the internal cavity of the top keel frame.

[0009] Among them, in the above structure, the lower ends of the walls surround the ground, and a leveling piece, a leveling keel and a support plate are arranged on the ground. The leveling piece includes a bottom plate, an adjusting screw and a support cylinder. The lower end of the adjusting screw is vertically connected to the upper end of the bottom plate. The support cylinder is provided with a threaded hole, and the support cylinder is sleeved on the adjusting screw and threadedly connected to the adjusting screw. The lower end of the support cylinder is flanged to form a supporting part; the cross-section of the leveling keel is a channel-shaped structure, and a number of through holes are arranged at intervals on the inner bottom surface. The leveling keel is buckled on the support cylinder, and the through holes are arranged opposite to the adjusting screw. The support plate is placed on the bent edges of adjacent two leveling keels, floor tiles are arranged on the support plate, and the support plate and leveling keel are connected to the support cylinder by screws.

[0010] Further, an adjusting nut is further included in the above structure. The adjusting nut is sleeved on the adjusting screw and is located below the support cylinder.

[0011] Further, a slotted opening is provided at the upper end of the adjusting screw in the above structure.

[0012] Among them, in the above structure, the lower ends of the walls enclose the ground, and a leveling member and a support plate are arranged on the ground. The leveling member includes a bottom plate, an adjusting screw rod and a support cylinder. The lower end of the adjusting screw rod is vertically connected to the upper end of the bottom plate. The support cylinder is provided with a threaded hole, and the support cylinder is sleeved on the adjusting screw rod and is threadedly connected to the adjusting screw rod. The lower end of the support cylinder is flanged to form a support portion; the leveling members are arranged at horizontal and vertical intervals, and a plurality of through holes are arranged at intervals on the support plate, and the support plate is sleeved on the support cylinder.

[0013] Among them, the above structure further includes a thermal break and a heat insulation pad. The thermal break is arranged at the upper end of the purlin, and the heat insulation pad is laid on the composite roof panel.

[0014] Among them, in the above structure, a heat insulation board is arranged on the lower end surface of the top keel frame inside the C-shaped keel, and a light steel keel and a sound insulation board are arranged at the lower end of the heat insulation board inside the wall.

[0015] Among them, the above structure further includes a floor slab, and the floor slab includes a floor keel frame, a floor composite board, a fixing strip and a calcium silicate board. The two ends of the floor keel frame are connected to the C-shaped keels on the wall. The floor composite board is connected to the floor keel frame through the fixing strip, and a damping strip is laid between the floor composite board and the floor keel frame; the calcium silicate board is fixed on the floor composite board by screws, and the joints between the calcium silicate boards are staggered from the joints between the floor composite boards. A ceiling board is arranged at the lower end of the floor keel frame.

[0016] Furthermore, in the above structure, both the connecting member and the fixing strip are Z-shaped profiles. The corresponding ends of the adjacent composite wall panels and the floor composite board are placed on the bent edges of the Z-shaped profiles and fixed by screws.

[0017] Among them, the above structure further includes an eaves keel and a fascia board. The eaves keel is in the shape of a right-angled trapezoid with an open bottom. A herringbone connecting strip is arranged at the upper end of the composite roof panel above the top keel frame. The inside of the connecting strip is filled with heat insulation cotton, and a U-shaped closing keel is clamped at the lower end. The eaves keel is inserted into the lower end of the top keel frame, and the outer end of the eaves keel is connected to the top keel frame through the fascia board.

[0018] The beneficial effects of the present invention are as follows: In this structure, the roof is supported by a triangular top keel frame, so that there is a heat dissipation space for the roof, and ventilation holes are arranged at the sealed ends of both ends of the top keel frame. The walls are fixed at intervals by C-shaped keels. Composite wall panels and overlapping tenon wall panels are arranged on both sides of the C-shaped keels, and air inlet holes are arranged at the lower ends of the walls. A number of through holes are arranged at intervals on the bottom surface of the C-shaped keel, so that the internal cavities of the entire wall are connected. The cavities between adjacent C-shaped keels are connected to the internal cavity of the top keel frame. Due to the connection of the cavities of the C-shaped keels of the wall, this structural arrangement enables air to enter through the air inlet holes at the lower part of the wall and be discharged from the ventilation holes through the wall under the action of atmospheric pressure, so that the entire house can achieve fluid heat exchange. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present invention;

[0020] Figure 2 of the present invention Figure 1 is an enlarged schematic diagram of the structure at III in the present invention;

[0021] Figure 3 of the present invention Figure 1 is an enlarged schematic diagram of the structure at VI in the present invention;

[0022] Figure 4 of the present invention Figure 1 is an enlarged schematic diagram of the structure at IV in the present invention;

[0023] Figure 5 of the present invention Figure 1 is an enlarged schematic diagram of the structure at I in the present invention;

[0024] Figure 6 of the present invention Figure 1 is an enlarged schematic diagram of the structure at II in the present invention;

[0025] Figure 7 of the present invention Figure 1 is an enlarged schematic diagram of the structure at V in the present invention;

[0026] Figure 8 is a schematic diagram of the ground cross-section structure of the present invention;

[0027] Figure 9 is another schematic diagram of the ground cross-section structure of the present invention;

[0028] Figure 10 is a schematic diagram of the structures of the closing keel and the cornice keel of the present invention.

[0029] In the figure, the markings are: 1 is the ground, 11 is the bottom plate, 12 is the adjusting screw, 13 is the adjusting nut, 14 is the support cylinder, 15 is the leveling keel, 16 is the support plate, 17 is the floor tile, 18 is the fixing glue, 2 is the floor slab, 21 is the floor joist frame, 22 is the floor composite board, 23 is the fixing strip, 24 is the calcium silicate board, 25 is the ceiling board, 3 is the wall, 31 is the composite wall board, 32 is the connecting piece, 33 is the C-shaped keel, 34 is the overlapping tenon wall board, 4 is the roof, 41 is the composite roof panel, 42 is the broken bridge, 43 is the purlin, 44 is the closing keel, 45 is the cornice keel, 46 is the fascia board, 47 is the top joist frame, 49 is the heat insulation pad, 411 is the connecting strip, 412 is the heat insulation board, 413 is the light steel keel, 414 is the sound insulation board, 5 is the screw, and 6 is the ventilation hole. Detailed implementation mode

[0030] The present invention will be further described below with reference to the accompanying drawings.

[0031] AsFigures 1 to 10 As shown, the prefabricated light steel house structure of this structure includes a roof 4 and a wall 3. The roof 4 includes a top keel frame 47, a composite roof panel 41, and purlins 43. The cross-section of the top keel frame 47 is a triangular structure. Both ends of the top keel frame 47 are sealed and provided with ventilation holes 6. The cross-section of the purlin 43 is a channel-shaped structure, and the purlins 43 are arranged at intervals on the two inclined planes at the upper end of the top keel frame 47. The composite roof panel 41 is placed on the adjacent purlins 43, and the composite roof panel 41, the purlins 43, and the top keel frame 47 are connected by screws 5;

[0032] The wall 3 includes a composite wall panel 31, a connecting piece 32, a C-shaped keel 33 and an overlapping tongue and groove wall panel 34. The C-shaped keels 33 are arranged vertically at intervals, and the upper ends are connected to the top keel frame 47. The composite wall panel 31 is arranged on the outer bending wall of the C-shaped keel 33 through the connecting piece 32. The overlapping tongue and groove wall panel 34 is fixed on the inner bending wall of the C-shaped keel 33 through screws 5. An air inlet is provided on the composite wall panel 31 at the lower part of the wall 3. A number of through holes are arranged at intervals on the bottom surface of the C-shaped keel 33, and the cavities of adjacent C-shaped keels 33 are communicated with the internal cavity of the top keel frame 47. Those skilled in the art should understand that this structure preferably takes into account the heat dissipation problem of the light steel house. Actually, by making the wall 3 into a hollow wall and connecting the cavity of the wall 3 with the cavity of the roof 4, and by opening an air inlet hole at the lower end of the wall 3, the air inlet hole can be preferably a closable type, and can be selectively opened according to the temperature of the external environment. An air exchange hole 6 is provided on the roof 4, and automatic air exchange is realized by using the atmospheric pressure of the chimney principle. If the height of the house is not enough, a fan can also be installed at the air exchange hole 6 on the roof 4 to achieve the purpose of automatic air exchange. In order to facilitate air exchange better, this structure preferably makes the roof 4 include a top keel frame 47, a composite top plate 41 and purlins 43. The cross section of the top keel frame 47 is a triangular structure, so that an internal cavity structure is formed. At the same time, both ends of the top keel frame 47 are sealed and provided with air exchange holes 6. Preferably, the cross section of the purlin 43 is a channel-shaped structure, and the purlins 43 are arranged at intervals on the two inclined surfaces at the upper end of the top keel frame 47. The purlins 43 should be arranged at intervals along the width direction of the inclined surface at the upper end of the top keel frame 47. The composite top plate 41 is placed on the adjacent purlins 43, and the composite top plate 41, the purlins 43 and the top keel frame 47 are connected through screws 5. Considering anti-corrosion and nail-holding force for the composite top plate 41, it should at least include one layer of calcium silicate board 24 and one layer of oriented strand board, and the calcium silicate board 24 is located on the outside. The wall 3 includes a composite wall panel 31, a connecting piece 32, a C-shaped keel 33 and an overlapping tongue and groove wall panel 34. The C-shaped keels 33 are arranged vertically at intervals to form the external shape of the house, and the upper ends are connected to the top keel frame 47 to realize the support and fixation of the top keel frame 47. The composite wall panel 31 is arranged on the outer bending wall of the C-shaped keel 33 through the connecting piece 32. The overlapping tongue and groove wall panel 34 is fixed on the inner bending wall of the C-shaped keel 33 through screws 5. It can be seen from this that the composite wall panel 31 is an exterior wall panel, so the problems of strength and anti-corrosion should be considered. Therefore, it is preferably at least composed of one layer of calcium silicate board 24 and one layer of oriented strand board, and the calcium silicate board 24 is located on the outside. The addition of the oriented strand board can increase the nail-holding force of the composite wall panel 31, making the structure not easy to loosen and the installation more firm; while the overlapping tongue and groove wall panel 34 is an interior wall panel, so only the installation problem needs to be considered. The overlapping tongue and groove method is adopted to save the installation time. After actual installation, the decorative panel can be directly installed on the side wall of the overlapping tongue and groove wall panel 34 to complete the decoration of the wall 3. The overlapping tongue and groove wall panel 34 mainly considers firm installation and fast installation. Therefore, the oriented strand board can be directly used to set overlapping tongue and groove heads at its ends, or a composite board of the oriented strand board and the calcium silicate board 24 can be used, as long as the end is an overlapping tongue and groove head.An air inlet is provided on the composite wall panel 31 located at the lower part of the wall body 3 to achieve air change in the wall body 3. A plurality of through holes are spaced on the bottom surface of the C-shaped keel 33 to make all the cavities of the wall body 3 communicate, and the cavities of adjacent C-shaped keels 33 communicate with the internal cavity of the top keel frame 47, so that the air flow between the wall body 3 and the roof 4 can be achieved, and the purpose of cooling and heat dissipation of the wall body 3 and the roof 4 can be achieved.

[0033] Preferably, in the above structure, the lower end of the wall body 3 encloses the ground 1. A leveling member, a leveling keel 15 and a support plate 16 are arranged on the ground 1. The leveling member includes a bottom plate 11, an adjusting screw rod 12 and a support cylinder 14. The lower end of the adjusting screw rod 12 is vertically connected to the upper end of the bottom plate 11. A threaded hole is provided on the support cylinder 14. The support cylinder 14 is sleeved on the adjusting screw rod 12 and is threadedly connected to the adjusting screw rod 12. The lower end of the support cylinder 14 is flanged to form a support portion. The cross section of the leveling keel 15 is a U-shaped structure, and a plurality of through holes are spaced on the inner bottom surface. The leveling keel 15 is buckled on the support cylinder 14, and the through holes are arranged opposite to the adjusting screw rod 12. The support plate 16 is placed on the bent edges of two adjacent leveling keels 15. Floor tiles 17 are arranged on the support plate 16, and the support plate 16 and the leveling keel 15 are connected to the support cylinder 14 by screws 5. Those skilled in the art should understand that the ground 1 of this structure is composed of a leveling member, a leveling keel 15 and a support plate 16. In fact, only the floor tiles 17 need to be laid on the support plate 16 to complete the decoration. Specifically, the leveling member mainly includes a bottom plate 11, an adjusting screw rod 12 and a support cylinder 14. The lower end of the adjusting screw rod 12 is vertically connected to the upper end of the bottom plate 11. Preferably, the adjusting screw rod 12 is a full-thread screw rod structure. A threaded hole is provided on the support cylinder 14. In fact, an internal thread can be provided on the inner wall of the through hole of the support cylinder 14. The support cylinder 14 is sleeved on the adjusting screw rod 12 and is threadedly connected to the adjusting screw rod 12. The lower end of the support cylinder 14 is flanged to form a support portion. Since the support portion directly contacts the leveling keel 15 during installation, this structural setting enables the adjustment of the support height by turning the support cylinder 14. The leveling member of this structure is mainly kept vertically arranged by the bottom plate 11, so the size of the bottom plate 11 should ensure that the adjusting screw rod 12 is vertically arranged. This structure is mainly used for the leveling installation of the ground 1. Therefore, during actual installation, a leveling member, a leveling keel 15 and a support plate 16 are required. The size of the support plate 16, the position of the leveling member, etc. can be designed and prefabricated in advance according to the size of the house, which can greatly reduce the installation time. Specifically, the leveling members are arranged at intervals horizontally and vertically. A plurality of through holes are spaced on the inner bottom surface of the leveling keel 15. The leveling keel 15 is buckled on the support cylinder 14, and the through holes are arranged opposite to the adjusting screw rod 12. The leveling keel 15 is connected to the support portion by screws 5, so that the fixing of the leveling keel 15 can be achieved. The leveling keels 15 are arranged horizontally and vertically to prevent them from toppling. After installation, the support plate 16 is directly placed on the bent edges of two adjacent leveling keels 15, and the support plate 16 and the leveling keel 15 are connected and fixed to the support cylinder 14 by screws 5 to achieve the leveling of the ground 1.

[0034] Preferably, the above structure further includes an adjusting nut 13 sleeved on the adjusting screw 12 and located below the support cylinder 14. Those skilled in the art should understand that in order to prevent the support cylinder 14 from rotating and affecting its adjusted height during the installation of the leveling keel 15 after the height of the support cylinder 14 is fixed. This structure preferably sets the adjusting nut 13 on the adjusting screw 12 between the support cylinder 14 and the bottom plate 11, that is, below the support cylinder 14. After the height of the support cylinder 14 is fixed, the adjusting nut 13 is screwed to fit with the lower end face of the support cylinder 14, that is, the support cylinder 14 is locked by the double-nut principle.

[0035] Preferably, the upper end of the adjusting screw 12 in the above structure is provided with a slotted opening. Those skilled in the art should understand that since the support cylinder 14 is fixed to the leveling keel 15 and the support cylinder 14 is locked by the adjusting nut 13, during secondary adjustment, it is necessary to rotate the adjusting screw 12 to adjust the height of the leveling keel 15. Therefore, in order to facilitate screwing the adjusting screw 12, this structure preferably provides a slotted opening at the upper end of the adjusting screw 12, which can be screwed by a flat-blade screwdriver. The shape of the opening is not the only structure, and it can be an internal hexagon or a cross shape, etc.

[0036] Preferably, the lower end of the wall 3 encloses the ground 1, and a leveling member and a support plate 16 are provided on the ground 1. The leveling member includes a bottom plate 11, an adjusting screw 12 and a support cylinder 14. The lower end of the adjusting screw 12 is vertically connected to the upper end of the bottom plate 11. The support cylinder 14 is provided with a threaded hole, and the support cylinder 14 is sleeved on the adjusting screw 12 and threadedly connected to the adjusting screw 12. The lower end of the support cylinder 14 is flanged to form a support portion; the leveling members are arranged at intervals horizontally and vertically, and a number of through holes are arranged at intervals on the support plate 16, and the support plate 16 is sleeved on the support cylinder 14. Those skilled in the art should understand that this structure is mainly used for the leveling installation of the ground 1. In order to achieve the leveling connection of the support plate 16, it is preferably to include any of the above leveling members and the support plate 16. Actually, the leveling members are arranged at intervals horizontally and vertically, and a number of through holes are arranged at intervals on the support plate 16, and the support plate 16 is sleeved on the support cylinder 14. Since this solution mainly realizes the connection with the support cylinder 14 through the through holes on the support plate 16, it should be noted that the support plate 16 that meets this installation should have a certain structural strength. This structure can preferably inject a fixing glue 18 between the support cylinder 14 and the adjusting screw 12. Specifically, when the position of the support cylinder 14 is adjusted, the fixing glue 18 is injected to fix the support cylinder 14 and the adjusting screw 12 to ensure that the height of the support cylinder 14 remains unchanged.

[0037] Preferably, the above structure further includes a heat bridge 42 and a heat insulation pad 49. The heat bridge 42 is arranged at the upper end of the purlin 43, and the heat insulation pad 49 is laid on the composite roof panel 41. Those skilled in the art should understand that in order to reduce the heat transfer of the roof 4, this structure preferably uses the heat bridge 42 and the heat insulation pad 49 to block the heat transfer. Specifically, the heat bridge 42 is arranged at the upper end of the purlin 43, and the heat insulation pad 49 is laid on the composite roof panel 41. The heat bridge 42 is an existing product, and its shape can be a king-shaped or feng-shaped structure, etc.

[0038] Preferably, a heat insulation board 412 is arranged on the lower end surface of the top dragon skeleton 47 located inside the C-shaped keel 33 in the above structure, and a light steel keel 413 and a sound insulation board 414 are arranged at the lower end of the heat insulation board 412 located inside the wall 3. Those skilled in the art should understand that considering the heat dissipation problem inside the house, which is also the lower end surface of the top dragon skeleton 47 located inside the C-shaped keel 33, this structure preferably arranges a heat insulation board 412, a light steel keel 413 and a sound insulation board 414 in sequence on the lower end surface of the top dragon skeleton 47 inside it. The heat insulation board 412 and the sound insulation board 414 are supported by the light steel keel 413, and this technology can adopt the existing decoration method. Further preferably, a light steel keel 413 and a sound insulation board 414 are arranged at the lower end of the heat insulation board 412 located inside the wall 3 to reduce the production cost.

[0039] Preferably, the above structure further includes a floor slab 2. The floor slab 2 includes a floor joist skeleton 21, a floor composite board 22, a fixing strip 23 and a calcium silicate board 24. Both ends of the floor joist skeleton 21 are connected to the C-shaped keel 33 on the wall. The floor composite board 22 is connected to the floor joist skeleton 21 through the fixing strip 23, and a shock-absorbing strip is laid between the floor composite board 22 and the floor joist skeleton 21; the calcium silicate board 24 is fixed on the floor composite board 22 by screws 5, and the joints between the calcium silicate boards 24 are staggered from the joints between the floor composite boards 22. Those skilled in the art should understand that this structure considers the multi-layer floors of the house and preferably further includes a floor slab 2. Further preferably, the specific structure of the floor slab 2 includes a floor joist skeleton 21, a floor composite board 22, a fixing strip 23 and a calcium silicate board 24. Both ends of the floor joist skeleton 21 are connected to the C-shaped keel 33 on the wall to realize the fixation of the floor joist skeleton 21, and the floor joist skeleton 21 is an existing product and its relevant parameters can be actually modified according to the size of the house. The floor composite board 22 is connected to the floor joist skeleton 21 through the fixing strip 23, and a shock-absorbing strip is laid between the floor composite board 22 and the floor joist skeleton 21; the calcium silicate board 24 is fixed on the floor composite board 22 by screws 5, and the joints between the calcium silicate boards 24 are staggered from the joints between the floor composite boards 22 to ensure the overall structural strength. And actually, only the floor tiles 17 you like need to be laid on the calcium silicate board 24. Preferably, the internal cavity of the floor slab 2 can also be communicated with the internal cavity of the wall 3 to facilitate heat dissipation.

[0040] Preferably, a ceiling board 25 is provided at the lower end of the floor joist frame 21 in the above structure. Those skilled in the art should understand that, in order to ensure the overall decorative effect, it is preferred to provide a ceiling board 25 at the lower end of the floor joist frame 21 in this structure, and the ceiling board 25 can be installed and arranged using existing technologies.

[0041] Preferably, in the above structure, both the connecting member 32 and the fixing strip 23 are Z-shaped profiles. The adjacent ends of the composite wallboard 31 and the floor composite board 22 are correspondingly placed on the bent edges of the Z-shaped profiles and fixed by screws 5. Those skilled in the art should understand that, in order to facilitate the quick connection of the composite wallboard 31 and the floor composite board 22, the specific structures of the connecting member 32 and the fixing strip 23 are preferably designed in this structure. Considering the problem of loosening in the later stage, the composite wallboard 31 and the floor composite board 22 in this structure should be composite boards and include at least one layer of oriented strand board. Preferably, both the connecting member 32 and the fixing strip 23 are Z-shaped profiles, so that the adjacent composite wallboards 31 of the wall 3 contact the two bent edges of the connecting member 32, and the screws 5 pass through the connecting member 32 and the composite wallboard 31 and then connect to the C-shaped keel 33. Similarly, the adjacent floor composite boards 22 are connected by the fixing strip 23, that is, the ends of the adjacent floor composite boards 22 contact the bent edges of the fixing strip 23, and the screws 5 pass through the floor composite board 22 and the fixing strip 23 and then connect and fix to the floor joist frame 21.

[0042] Among them, the above structure further includes an eave keel 45 and an eave board 46. The eave keel 45 is in the shape of a right-angled trapezoid with an open lower bottom. At the upper end of the composite roof board 41 above the top joist frame 47, a herringbone connecting strip 411 is provided. The inside of the connecting strip 411 is filled with heat insulation cotton, and a U-shaped closing keel 44 is clamped at the lower end. The eave keel 45 is inserted into the lower end of the top joist frame 47, and the outer end of the eave keel 45 is connected to the top joist frame 47 through the eave board 46. Those skilled in the art should understand that, in order to prevent the composite roof board 41 from being directly damaged by rainwater, it is preferred to connect the upper ends of the composite roof boards 41 above the top joist frame 47 into one body through a herringbone connecting strip 411 and fill the inner cavity with heat insulation cotton. At the same time, a U-shaped closing keel 44 is clamped at the lower end, and the closing keel 44 can be directly clamped at the end of the composite top and fixed by screws 5. Similarly, the right-angled trapezoid-shaped eave keel 45 with an open lower bottom is inserted into the lower end of the top joist frame 47, and the outer end of the eave keel 45 is connected to the top joist frame 47 through the eave board 46, and a drip edge can be formed to solve the problem of roof drainage.

Claims

1. Prefabricated light steel house structure, including a roof (4) and a wall (3), characterized in that: The roof (4) includes a top keel frame (47), a composite roof panel (41) and purlins (43). The cross-section of the top keel frame (47) is a triangular structure. Both ends of the top keel frame (47) are sealed and provided with ventilation holes (6). The cross-section of the purlin (43) is a channel-shaped structure, and the purlins (43) are arranged at intervals on the two inclined planes at the upper end of the top keel frame (47). The composite roof panel (41) is placed on adjacent purlins (43), and the composite roof panel (41), purlins (43) and top keel frame (47) are connected by screws (5). The wall (3) includes a composite wall panel (31), a connecting member (32), C-shaped keels (33) and a rabbeted wall panel (34). The C-shaped keels (33) are arranged vertically at intervals and the upper ends are connected to the top keel frame (47). The composite wall panel (31) is arranged on the outer bent wall of the C-shaped keel (33) through the connecting member (32). The rabbeted wall panel (34) is fixed on the inner bent wall of the C-shaped keel (33) by screws (5). An air inlet is arranged on the composite wall panel (31) at the lower part of the wall (3). A number of through holes are arranged at intervals on the bottom surface of the C-shaped keel (33), and the cavities of adjacent C-shaped keels (33) are communicated with the inner cavity of the top keel frame (47).

2. The prefabricated light steel house structure according to claim 1, characterized in that: The lower end of the wall (3) encloses the ground (1). The ground (1) is provided with a leveling member, leveling keels (15) and a support plate (16). The leveling member includes a bottom plate (11), an adjusting screw (12) and a support cylinder (14). The lower end of the adjusting screw (12) is vertically connected to the upper end of the bottom plate (11). The support cylinder (14) is provided with a threaded hole. The support cylinder (14) is sleeved on the adjusting screw (12) and is threadedly connected with the adjusting screw (12). The lower end of the support cylinder (14) is flanged to form a support portion. The cross-section of the leveling keel (15) is a channel-shaped structure, and a number of through holes are arranged at intervals on the inner bottom surface. The leveling keel (15) is buckled on the support cylinder (14), and the through holes are arranged opposite to the adjusting screw (12). The support plate (16) is placed on the bent edges of adjacent leveling keels (15), and the support plate (16) and the leveling keel (15) are connected to the support cylinder (14) by screws (5).

3. The prefabricated light steel house structure according to claim 2, characterized in that: It further includes an adjusting nut (13). The adjusting nut (13) is sleeved on the adjusting screw (12) and is located below the support cylinder (14).

4. The prefabricated light steel house structure according to claim 2, wherein: The upper end of the adjusting screw (12) is provided with a slotted opening.

5. The prefabricated light steel house structure according to claim 1, characterized in that: The lower end of the wall (3) encloses the ground (1). The ground (1) is provided with a leveling member and a support plate (16). The leveling member includes a bottom plate (11), an adjusting screw (12) and a support cylinder (14). The lower end of the adjusting screw (12) is vertically connected to the upper end of the bottom plate (11). The support cylinder (14) is provided with a threaded hole. The support cylinder (14) is sleeved on the adjusting screw (12) and is threadedly connected with the adjusting screw (12). The lower end of the support cylinder (14) is flanged to form a support portion. The leveling members are arranged horizontally and vertically at intervals. A number of through holes are arranged at intervals on the support plate (16). The support plate (16) is sleeved on the support cylinder (14).

6. The prefabricated light steel house structure according to claim 1, wherein: It further includes a broken bridge (42) and a heat insulation pad (49). The broken bridge (42) is arranged at the upper end of the purlin (43), and the heat insulation pad (49) is laid on the composite roof panel (41).

7. The prefabricated light steel house structure according to claim 1, characterized in that: A heat insulation board (412) is arranged on the lower end surface of the top keel frame (47) located inside the C-shaped keel (33), and a light steel keel (413) and a sound insulation board (414) are arranged at the lower end of the heat insulation board (412) located inside the wall (3).

8. The prefabricated light steel house structure according to claim 1, characterized in that: It further includes a floor slab (2). The floor slab (2) includes a floor keel frame (21), a floor composite board (22), a fixing strip (23) and a calcium silicate board (24). Both ends of the floor keel frame (21) are connected to the C-shaped keels (33) on the wall surface. The floor composite board (22) is connected to the floor keel frame (21) through the fixing strip (23), and a shock absorption strip is laid between the floor composite board (22) and the floor keel frame (21). The calcium silicate board (24) is fixed on the floor composite board (22) by screws (5), and the joints between the calcium silicate boards (24) are staggered from the joints between the floor composite boards (22). A suspended ceiling board (25) is arranged at the lower end of the floor keel frame (21).

9. The prefabricated light steel house structure according to claim 8, characterized in that: Both the connecting piece (32) and the fixing strip (23) are Z-shaped profiles. The adjacent ends of the composite wallboard (31) and the floor composite board (22) are correspondingly placed on the bent edges of the Z-shaped profile and fixed by screws (5).

10. The prefabricated light steel house structure according to claim 1, characterized in that: It further includes an eave keel (45) and an eave board (46). The eave keel (45) is in the shape of a right-angled trapezoid with an open lower bottom. A herringbone connecting strip (411) is arranged at the upper end top of the composite roof panel (41) located above the top keel frame (47). The connecting strip (411) is filled with heat insulation cotton inside, and a U-shaped closing keel (44) is clamped at the lower end. The eave keel (45) is clamped into the lower end part of the top keel frame (47), and the outer end of the eave keel (45) is connected to the top keel frame (47) through the eave board (46).

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