Keel structure of assembly type overhead ground, assembly type overhead ground and installation method

Abstract

The invention discloses a keel structure of an assembly type overhead ground, the assembly type overhead ground and an installation method, and belongs to the technical field of decoration. The keel structure comprises two side keels and a plurality of parallel main keels. The side keels can be horizontally fixed to the positions, at the same height, of the two oppositely-arranged walls respectively. The side keels are provided with horizontal mounting planes; the main keels are arranged between the two side keels, the two ends of each main keel are fixed to the installation planes of the two side keels respectively so that the two ends of each main keel can be located at the same height, and the lower surface of each main keel is provided with two contact faces which are located on the two sides of the central axis of the main keel respectively and make contact with the installation planes. A plurality of adjustable supporting legs located between the two contact faces are arranged on the main keel at intervals, and the lower ends of the adjustable supporting legs can move up and down relative to the main keel and make contact with the ground so as to support the main keel and level the main keel. Leveling can be facilitated, and a good stabilizing effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of decoration, and in particular to a keel structure of an assembled elevated floor, an assembled elevated floor and an installation method. Background Art

[0002] The assembled elevated floor is composed of a keel structure and a floor panel. The keel structure sets the floor panel in the air so that it does not directly contact the base floor of the main structure of the building, but forms a certain space between the two. These supporting structures and panels are usually prefabricated in the factory and then quickly assembled on the construction site. The space formed between the panel and the base floor can be used to install various water and electricity pipelines, so it is now more and more widely used.

[0003] During the installation process of existing assembled elevated floors, each adjustment foot needs to be leveled individually, which is difficult and reduces construction efficiency. At the same time, since the adjustment foot supports the ground in a point-like manner, the ground has stricter restrictions on load-bearing stability. In terms of surface installation, since general surface materials do not bear load-bearing functions, common elevated floors require a layer of substrate to be laid on the adjustment foot first, and then the surface materials are laid on the substrate. This method is also accompanied by the problem of surface damage caused by uneven laying.

[0004] In Chinese utility model patent CN211172909U, an overhead frame structure of an assembled floor is disclosed, including a keel, whose side is "convex", a connecting leveling member, including a bearing platform, a connecting plate, a connecting platform and an adjusting screw, the connecting platform is protruding from the bearing platform, and the connecting platform is in a "cross" shape, the adjusting screw is threadedly connected to the center of the bearing platform and the connecting platform, and the adjusting screw is located at the bottom of the bearing platform; the end of the keel is sleeved on the connecting plate and docked with the end of the connecting platform; the keel is set to multiple roots, the connecting leveling member is set to multiple, and the multiple connecting leveling members connect the keels to form a closed frame structure; the base plate is set in a unit frame surrounded by the keel and the leveling connecting member. When the overhead frame structure is leveled, when adjusting the height of one of the adjusting screws, the height of the horizontal and longitudinal keels around the screw will change, and the adjustment is relatively complicated, and the height of one of the keels cannot be adjusted alone.

[0005] In Chinese utility model patent CN215407173U, a ground overhead system is disclosed, including a plurality of overhead modules, the plurality of the overhead modules are arranged in sequence, each of the overhead modules includes a plurality of metal strips arranged at intervals and a plate-like body arranged on the plurality of the metal strips, both ends of each of the metal strips form an upper flange to cover the side of the plate-like body; a foot, which is arranged below the overhead module. Four footings are installed on each plate, and when leveling, the four footings need to be leveled separately, which is complicated to operate and has low installation efficiency. Summary of the invention

[0006] The present invention provides a keel structure of an assembled elevated floor, an assembled elevated floor and an installation method, in order to at least partially solve the above technical problems.

[0007] As a first aspect of the present invention, a keel structure of an assembled elevated floor is provided, comprising: two side keels, which can be horizontally fixed at the same height on two oppositely arranged walls; the side keels have a horizontal installation plane;

[0008] A plurality of mutually parallel main keels; the main keels are arranged between two side keels, and the two ends of each main keel are respectively fixed on the mounting planes of the two side keels so that the two ends of the main keel are at the same height, and the lower surface of the main keel has two contact surfaces that are respectively located on both sides of the central axis of the main keel and contact the mounting plane; a plurality of adjustable legs are arranged on the main keel at intervals and located between the two contact surfaces, and the lower ends of the adjustable legs can move up and down relative to the main keel and contact the ground to support the main keel and level the main keel.

[0009] Among them, the side keel is a semi-I-shaped structure, including a vertical fixing plate fixed on the wall, an upper horizontal plate located at the upper part of the vertical fixing plate, and a lower horizontal plate located at the lower part of the vertical fixing plate, the width of the lower horizontal plate is greater than the width of the upper horizontal plate, so that the outer edge of the lower horizontal plate away from the side of the vertical fixing plate is located outside the upper horizontal plate, and the upper surface of the lower horizontal plate is the installation plane.

[0010] Wherein, the main keel is provided with a threaded hole, the adjustable leg has an external thread matching the threaded hole, and the adjustable leg is screwed into the threaded hole.

[0011] Wherein, the top of the adjustable leg is provided with one of a slot, a cross slot, an inner hexagon or an outer hexagon.

[0012] Among them, a plurality of first thickening blocks are fixedly arranged on the main keel, and the threaded holes are penetrated through the first thickening blocks.

[0013] Among them, the middle part of the main keel has a through groove arranged along the length direction of the main keel, and a supporting part is arranged on both sides of the groove. The supporting part has a first supporting surface located at the top and a second supporting surface located at the bottom. The first supporting surface can be used to support the load, and the second supporting surface is the contact surface.

[0014] Wherein, the first thickening block is arranged in the groove.

[0015] Wherein, a shock-absorbing and sound-insulating pad in contact with the ground is provided at the lower part of the adjustable leg; the shock-absorbing and sound-insulating pad is a disc-shaped structure, and a top groove is provided at the top for the adjustable leg to be inserted.

[0016] Wherein, a plurality of screw mounting holes are arranged at the end of the main keel, and the main keel and the side keel are fixed as a whole by screws passing through the screw mounting holes.

[0017] Among them, it also includes a connecting device capable of connecting two or more main keels end to end, and the connecting device includes:

[0018] A lower fixing seat, which can be fixed on the ground by means of mounting nails, and on which a vertically arranged connecting pipe is provided, wherein the connecting pipe has an internal thread;

[0019] A connecting plate is horizontally arranged above the lower fixing seat, and the two ends of the connecting plate are respectively connected to the end of a main keel; the two sides of the connecting plate are provided with retaining edges for limiting the main keel; the middle part of the connecting plate is provided with a second thickening block;

[0020] The vertical rod has an external thread at its lower end and can be screwed into the connecting pipe of the lower fixing seat, and the upper end is fixedly connected to the second thickening block of the connecting plate.

[0021] As a second aspect of the present invention, there is also provided an assembled elevated floor, comprising a decorative panel and a fire-retardant panel, and also comprising the keel structure as described above, wherein the fire-retardant panel is laid above the keel structure, and the decorative panel is laid above the fire-retardant panel.

[0022] Wherein, the decorative panel is one of ceramic tile, wooden floor or SPC floor.

[0023] As a third aspect of the present invention, there is also provided an assembled elevated floor, comprising the keel structure as described above, and modular floor tiles formed by an integrated composite of decorative panels and fire-retardant panels, wherein the modular floor tiles are laid on the keel structure.

[0024] Wherein, the decorative panel is one of ceramic tile, wooden floor or SPC floor.

[0025] As a fourth aspect of the present invention, a method for installing an assembled elevated floor is also provided, which is used for the assembled elevated floor as described above, and comprises the following steps:

[0026] Determine the horizontal position of the side keel on the wall, and fix the side keel on two oppositely set walls;

[0027] Overlap the two ends of the main keel on the side keels, adjust the extension length of each adjustable leg so that the adjustable leg touches the ground, and level the main keel;

[0028] Fix the main keel and the side keel;

[0029] Lay the modular floor tiles on the main keel.

[0030] Based on the above solutions, it can be seen that the keel structure of the assembled elevated floor, the assembled elevated floor and the installation method of the present invention have at least one of the following beneficial effects compared with the prior art:

[0031] Since both ends of the main keel are fixed at the same height, leveling tools such as a spirit level can be placed on the upper surface of the main keel, and each adjustable leg can be adjusted individually so that the lower end of the adjustable leg contacts the ground, and after contacting the ground, the main keel is ensured to be in a horizontal state. Therefore, the leveling work of the keel structure of the present invention is very simple. On the one hand, the adjustable legs support the main keel, and on the other hand, leveling can be achieved during the installation process, and the operation is convenient and quick. More importantly, two contact surfaces are set on the main keel of the present invention. The two contact surfaces are separate structures with a certain distance between each other, and can be stably supported on the side keels, achieving a better stabilization effect, and are not easy to tip over after being subjected to external forces. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments are briefly introduced below.

[0033] Figure 1 It is a schematic diagram of the keel structure of the assembled elevated floor of the present invention;

[0034] Figure 2 for Figure 1 Schematic diagram of the structure of the side keel;

[0035] Figure 3 for Figure 1 Schematic diagram of the structure of the main keel;

[0036] Figure 4 for Figure 3 Left view of

[0037] Figure 5 It is a schematic diagram of the main view of the shock-absorbing and sound-insulating pad;

[0038] Figure 6 for Figure 5 A schematic diagram of the shock-absorbing and sound-insulating pad viewed from another angle;

[0039] Figure 7 It is a schematic diagram of the connection between the adjustable legs and the main keel;

[0040] Figure 8 It is a schematic diagram of connecting the connecting device to the main keel;

[0041] Fig. 9 is a schematic diagram of the connection structure;

[0042] Fig.10 is a schematic diagram of the connection plate;

[0043] Fig.11 is a schematic diagram of the connecting plate viewed from another angle;

[0044] Fig.12 is a schematic diagram of the connecting pipe;

[0045] Fig.13 It is a schematic diagram of the connection viewed from another angle;

[0046] Fig.14 It is a schematic diagram of the assembled elevated floor.

[0047] In the above drawings, the meanings of the reference numerals are as follows:

[0048] 1. Side keel; 11. Vertical fixing plate; 12. Upper horizontal plate; 13. Lower horizontal plate; 2. Main keel; 21. Groove; 22. Support part; 221. First supporting surface; 222. Second supporting surface; 23. Adjustable legs; 24. Shock-absorbing and sound-insulating pad; 241. Top groove; 25. First thickening block; 26. Threaded hole; 27. Screw mounting hole; 3. Connecting device; 31. Lower fixing seat; 311. Connecting pipe; 32. Connecting plate; 321. Side rib; 322. Second thickening block; 33. Vertical rod; 34. Mounting nail; 4. Wall; 5. Floor; 6. Modular floor tiles. DETAILED DESCRIPTION

[0049] In order to better understand the technical solution of the embodiment of the present invention, the embodiment of the present invention is described in detail below with reference to the accompanying drawings.

[0050] It should be clear that the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the embodiments of the present invention.

[0051] Example 1

[0052] like Figures 1 to 13 As shown, the embodiment of the present invention discloses a keel structure of an assembled elevated floor. The keel structure includes two side keels 1 and a plurality of main keels 2 parallel to each other.

[0053] Specific as Figure 1 and Figure 2 As shown, the two side keels 1 are parallel to each other and are horizontally fixed at the same height on two oppositely arranged walls. Figure 1 For the sake of clarity, only one of the walls 4 is shown. Since the two walls are arranged relative to each other, the two side keels 1 can be in a parallel state. Exemplarily, the two walls are the south wall and the north wall of the same room, or the east wall and the west wall of the same room.

[0054] The side keels 1 have a horizontal mounting plane, and the mounting planes of the two side keels 1 can be used to support the main keel 2, so that the main keel 2 is supported on the ground. The mounting planes of the two side keels 1 are on the same horizontal plane.

[0055] The side keel 2 is cut from a profile. Figure 2 As shown, the side keel 1 is a semi-I-shaped structure, including a vertical fixing plate 11 fixed to the wall, an upper horizontal plate 12 located above the vertical fixing plate 11, and a lower horizontal plate 13 located below the vertical fixing plate 11. The width of the lower horizontal plate 13 is greater than the width of the upper horizontal plate 12, so that the outer edge of the lower horizontal plate 13 away from the side of the vertical fixing plate 11 is located outside the upper horizontal plate 12. The upper surface of the lower horizontal plate 13 is the installation surface.

[0056] See also Figure 1 , Figure 3 and Figure 4 The main keel 2 is arranged between the two side keels 1, and the two ends of each main keel 2 are respectively fixed on the installation planes of the two side keels 1, that is, the two ends of these main keels 2 are overlapped on the lower horizontal plate 13 of the side keels 1, and the main keel 2 and the lower horizontal plate 13 of the side keels 1 are fixed together. Since the heights of the two lower horizontal plates 13 are the same, the two ends of the main keel 2 can be at the same height. In this way, it is only necessary to level the middle part of the main keel 2 to make the main keel 2 in a horizontal state, and all the main keels 2 can be at the same height. In the present invention, each main keel 2 is an independent structure, and the main keels 2 are not connected to each other through other keels to form a grid structure. Therefore, when one of the main keels 2 is leveled, it will not affect other adjacent main keels.

[0057] The lower surface of the main keel 2 has two contact surfaces respectively located on both sides of the central axis of the main keel 2 and in contact with the lower horizontal plate 13. More specifically, a through groove 21 is provided in the middle of the main keel 2 along the length direction of the main keel, and a support portion 22 is provided on both sides of the groove 21, respectively, and the support portion 22 has a first support surface 221 located at the top and a second support surface 222 located at the bottom, the first support surface 221 is used to support the load, and the second support surface 222 is the contact surface for contacting the lower horizontal plate 13.

[0058] A plurality of adjustable legs 23 are arranged at intervals on the main keel 2 between two contact surfaces. The lower ends of the adjustable legs can move up and down relative to the main keel 2 and contact the ground to support the main keel 2 and level the main keel.

[0059] Since both ends of the main keel 2 are fixed at the same height, a leveling tool such as a spirit level can be placed on the upper surface of the main keel 2, and each adjustable leg 23 can be adjusted individually so that the lower end of the adjustable leg 23 contacts the ground, and after contacting the ground, the main keel 2 is ensured to be in a horizontal state. Therefore, the leveling work of the keel structure of the present invention is very simple. On the one hand, the adjustable leg 23 supports the main keel 2, and on the other hand, it can be leveled during the installation process, and the operation is convenient and quick. More importantly, two contact surfaces are set on the main keel of the present invention. The two contact surfaces are separate structures with a certain distance between each other, so that they can be stably supported on the side keel 1, achieving a better stability effect, and are not easy to tip over after being subjected to external force.

[0060] Depend on Figure 3 It can be seen that a plurality of screw mounting holes 27 are provided at the end of the main keel 2, and the main keel 2 and the side keel 1 are fixed together by screws passing through the screw mounting holes 27. After the main keel 2 is fixed to the side keel 1, the main keel 2 can be prevented from moving and dislocating, ensuring that the main keel 2 remains stationary during the leveling process. The main keel 2 and the side keel 1 can also be fixed by other parts such as pins. The screw mounting holes 27 can be set on the center line of the groove 21, and at least one screw mounting hole 27 is located outside the upper horizontal edge of the side keel 1 so that the screws can be installed using an electric tool.

[0061] The structure of the main keel 2 matches that of the side keel 1. The width of the main keel 2 is 50 mm, the height is 20 mm, the width of the second support surface 222 is 10 mm, the width of the first support surface 221 is 15 mm, the bottom width of the groove 21 is 12.5 mm, and the height difference between the first support surface 221 and the bottom of the groove 21 is 14 mm. The width of the upper horizontal plate 12 of the side keel 1 is 15 mm, the width of the lower horizontal plate 13 is 30 mm, and the distance between the upper horizontal plate 12 and the lower horizontal plate 13 is 20.7 mm. It can be seen that after the main keel 2 is inserted between the upper horizontal plate 12 and the lower horizontal plate 13 of the side keel 1, the main keel 2 itself is a rectangular structure with high stability and is not easy to tip over. The main keel 2 will also be constrained by the upper horizontal plate 12 and the lower horizontal plate 13. The main keel 2 has a very high stability, which can prevent it from deflecting after receiving external force, causing the main keel 2 to become unbalanced and tip over.

[0062] Since two first supporting surfaces 221 are also provided on the upper part of the main keel 2 for supporting the load, the two first supporting surfaces 221 are also separated by the groove 21, and there is a certain interval between the two first supporting surfaces 221, which improves the supporting effect when installing the panel. The joint between the two panels is located above the groove and has a certain adjustment space.

[0063] A threaded hole 26 is provided on the main keel 2, and the adjustable leg 23 has an external thread matching the threaded hole 26, so that the adjustable leg 23 can be screwed into the threaded hole 26. The adjustable leg 23 can be made into a simple screw-type structure, or even directly purchase existing screws, bolts, screws and other fasteners, so that they can be easily replaced. The top of the adjustable leg 23 is provided with one of a slot, a cross slot, an inner hexagon or an outer hexagon, which is used to adjust from the top of the adjustable leg 23 with a screwdriver. Of course, the middle or lower part of the adjustable leg 23 can also be slotted or processed into a plane for adjustment in combination with a wrench.

[0064] The threaded hole 26 can be directly opened on the main keel 2, or a plurality of first thickening blocks 25 can be fixedly set on the main keel 2 by existing connection methods such as welding machine and threaded connection, and the threaded hole 26 is set through the first thickening block 25. The first thickening block 25 can increase the length of the threaded part in the threaded hole 26, so that its structure is firm and not easy to be damaged. The material of the first thickening block 25 can be the same as or different from that of the main keel 2. In this embodiment, the first thickening block 25 is a nut, and the threaded hole 26 is the threaded hole on the nut. The first thickening block 25 is fixedly connected to the main keel 2 by welding or other methods. Furthermore, the first thickening block 25 can be a rivet nut.

[0065] The main keel 2 is a profile structure formed by bending a steel plate, and is pre-processed into a certain length size in the factory. The bending directions of the groove 21 and the support part 22 are exactly opposite, which can improve the overall structural strength. The first thickening block 25 is arranged in the groove 21, which can make full use of the space of the main keel 2 and reduce the overall height. The top of the first thickening block 25 does not exceed the groove 21.

[0066] See also Figures 5 to 7 In this embodiment, a shock-absorbing and sound-insulating pad 24 in contact with the ground is provided at the lower part of the adjustable leg 23. The shock-absorbing and sound-insulating pad 24 is a disc-shaped structure, and a top groove 241 is provided at the top thereof for the adjustable leg 23 to be inserted. When in use, the lower end of the adjustable leg 23 is inserted into the top groove 241, and then the adjustable leg 23 is adjusted downward so that the shock-absorbing and sound-insulating pad 24 contacts the ground.

[0067] See also Figure 8 and Fig.13The keel structure of the present invention also includes a connecting device 3 that can connect two or more main keels 2 end to end. Since the main keel 2 is pre-processed in the workshop, its length is certain. For example, the specifications of the main keel 2 are 5m and 10m respectively. When the width of the room is 4m, the 5m main keel 2 can be cut into a length of 4m, and a single main keel 2 can meet the use requirements. When the width of the room is 7m, it is necessary to connect the 5m main keel and the 2m main keel to form a 7m long main keel, and the connecting device 3 is required.

[0068] The connecting device includes a lower fixing seat 31 , a connecting plate 32 and a vertical rod 33 .

[0069] The lower fixing seat 31 can be fixed on the ground by means of a mounting nail 34, and the ground here can be a floor of a building. A vertically arranged connecting pipe 311 is provided on the lower fixing seat 31, and the connecting pipe 311 has an internal thread.

[0070] The connecting plate 32 is horizontally arranged above the lower fixing seat 31, and the two ends of the connecting plate 32 are respectively connected to the ends of a main keel 2, so as to fix the two main keels 2. A retaining edge 321 for limiting the main keel 2 is arranged on both sides of the connecting plate 32. A second thickening block 322 is arranged in the middle of the connecting plate 32. When the connecting plate 32 is connected to the main keel 2, it is first bonded with glue such as formaldehyde-free MS glue, and then connected with screws to achieve double connection and improve the firmness of the connection.

[0071] The lower end of the vertical rod 33 is provided with an external thread, and can be screwed into the connecting tube 311 of the lower fixed seat 31, and the upper end of the vertical rod 33 can be fixedly connected to the second thickening block 322 of the connecting plate 32. In this embodiment, the second thickening block 322 is provided with a threaded hole, and the second thickening block 322 is a nut fixed on the connecting plate 32. After the vertical rod 33 is screwed into the second thickening block 322, it is screwed into the connecting tube 311 of the lower fixed seat 31. In other embodiments, the second thickening block 322 can also be provided with a light hole, and the upper end of the vertical rod 33 is provided with an external thread, and the upper end of the vertical rod 33 is passed through the light hole, and nuts are provided at the upper and lower ends of the light hole to fix the vertical rod 33.

[0072] The connecting device 3 can not only realize the connection between the two main keels 2, but more importantly, realize the connection between the main keel 2 and the ground, further improving the connection reliability of the main keel 2 and improving the stability of the main keel 2.

[0073] In summary, the keel structure of the assembled elevated floor in the embodiment of the present invention supports the main keel 2 through the side keel 1 to achieve the positioning of the two ends of the main keel 2, and then adjusts the height of the adjustable legs 23 to level the middle of the main keel 2. During the leveling process, the adjustable legs 23 only act on the current main keel and will not affect other main keels, so the main keel can be easily leveled. After all the main keels are leveled, the panel can be laid and the panel can be ensured to be flush. The keel structure of the present invention can achieve high stability of the main keel, and will not tip over due to unbalanced force, and has high anti-tipping characteristics.

[0074] Example 2

[0075] The embodiment of the present invention discloses an assembled elevated floor, which includes a decorative panel and a fire-retardant board, and also includes the keel structure of Example 1. The fire-retardant board can be selected from existing sulfur magnesium boards and other boards, and the decorative panel can be selected from ceramic tiles, wooden floors or SPC floors. After the keel structure is installed in the building, the upper surface of the main keel 2 is coated with formaldehyde-free MS glue or other glue, and then the fire-retardant board is laid on the main keel, and then the decorative panel is bonded to the top of the fire-retardant board by coating formaldehyde-free MS glue or other glue, and the installation of the assembled processing floor can be completed.

[0076] The assembled overhead floor of the present invention can achieve rapid leveling, and the keel structure is firm and reliable with high stability.

[0077] Example 3

[0078] like Fig.14 As shown, an embodiment of the present invention discloses an assembled elevated floor, including the keel structure disclosed in Example 1, and also including modular floor tiles formed by the integrated composite of decorative panels and fire-retardant panels, and the modular floor tiles are laid on the keel structure. The modular floor tiles can be mass-produced in a factory, and there is no need to assemble the decorative panels and fire-retardant panels on site, thereby saving on-site installation steps and improving on-site installation efficiency. The decorative panel can be one of a ceramic tile, a wooden floor or an SPC floor. When performing the integrated composite, glue such as formaldehyde-free MS glue is applied between the decorative panel and the fire-retardant panel, and then pressed by a machine and left to stand for a period of time.

[0079] Example 4

[0080] The embodiment of the present invention discloses an installation method of an assembled elevated floor, which is used for the assembled elevated floor disclosed in Example 3. The installation method includes the following steps.

[0081] Use a level meter or other equipment to determine the horizontal position of the side keel on the wall, and use tools such as pneumatic nails to fix the side keel on two oppositely set walls;

[0082] Overlap the two ends of the main keel on the side keels, adjust the extension length of each adjustable leg so that the adjustable leg touches the ground, and level the main keel;

[0083] Fix the main keel and the side keel;

[0084] Lay the modular floor tiles on the main keel.

[0085] The above description is only a preferred embodiment of the embodiment of the present invention and is not intended to limit the embodiment of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiment of the present invention should be included in the scope of protection of the embodiment of the present invention.

Claims

1. A keel structure of an assembled elevated floor, characterized in that: include: Two side keels can be horizontally fixed at the same height on two oppositely arranged walls; the side keels have a horizontal installation plane; A plurality of mutually parallel main keels; the main keels are arranged between two side keels, and the two ends of each main keel are respectively fixed on the mounting planes of the two side keels so that the two ends of the main keel are at the same height, and the lower surface of the main keel has two contact surfaces that are respectively located on both sides of the central axis of the main keel and contact the mounting plane; a plurality of adjustable legs are arranged on the main keel at intervals and located between the two contact surfaces, and the lower ends of the adjustable legs can move up and down relative to the main keel and contact the ground to support the main keel and level the main keel.

2. The keel structure of the assembled elevated floor according to claim 1 is characterized in that: The side keel is a semi-I-shaped structure, including a vertical fixing plate fixed on the wall, an upper horizontal plate located at the upper part of the vertical fixing plate, and a lower horizontal plate located at the lower part of the vertical fixing plate. The width of the lower horizontal plate is greater than the width of the upper horizontal plate, so that the outer edge of the lower horizontal plate away from the side of the vertical fixing plate is located outside the upper horizontal plate, and the upper surface of the lower horizontal plate is the installation plane.

3. The keel structure of the assembled elevated floor according to claim 1 is characterized in that: The main keel is provided with a threaded hole, the adjustable leg has an external thread matching the threaded hole, and the adjustable leg is screwed into the threaded hole.

4. The keel structure of the assembled elevated floor according to claim 3 is characterized in that: The top of the adjustable leg is provided with one of a slot, a cross slot, an inner hexagon or an outer hexagon.

5. The keel structure of the assembled elevated floor according to claim 3 is characterized in that: A plurality of first thickening blocks are fixedly arranged on the main keel, and the threaded holes are penetrated through the first thickening blocks.

6. The keel structure of the assembled elevated floor according to claim 5, characterized in that: The middle part of the main keel has a through groove arranged along the length direction of the main keel, and a supporting part is arranged on both sides of the groove. The supporting part has a first supporting surface located at the top and a second supporting surface located at the bottom. The first supporting surface can be used to support the load, and the second supporting surface is the contact surface.

7. The keel structure of the assembled elevated floor according to claim 6 is characterized in that: The first thickening block is arranged in the groove.

8. The keel structure of the assembled elevated floor according to claim 1 is characterized in that: A shock-absorbing and sound-isolating pad in contact with the ground is arranged at the lower part of the adjustable leg; the shock-absorbing and sound-isolating pad is a disc-shaped structure, and a top groove is arranged at the top for the adjustable leg to be inserted.

9. The keel structure of the assembled elevated floor according to claim 1, characterized in that: The end of the main keel is provided with a plurality of screw mounting holes, and the main keel and the side keel are fixed as a whole by screws passing through the screw mounting holes.

10. The keel structure of the assembled elevated floor according to claim 1, characterized in that: It also includes a connecting device capable of connecting two or more main keels end to end, the connecting device comprising: A lower fixing seat, which can be fixed on the ground by means of mounting nails, and on which a vertically arranged connecting pipe is provided, wherein the connecting pipe has an internal thread; A connecting plate is horizontally arranged above the lower fixing seat, and the two ends of the connecting plate are respectively connected to the end of a main keel; the two sides of the connecting plate are provided with retaining edges for limiting the main keel; the middle part of the connecting plate is provided with a second thickening block; The vertical rod has an external thread at its lower end and can be screwed into the connecting pipe of the lower fixing seat, and the upper end is fixedly connected to the second thickening block of the connecting plate.

11. An assembled elevated floor, comprising a decorative panel and a fire retardant panel, characterized in that: It also includes the keel structure as described in any one of claims 1 to 10, the fire-retardant board is laid on the keel structure, and the decorative panel is laid on the fire-retardant board.

12. The assembled elevated floor according to claim 11, characterized in that: The decorative panel is one of ceramic tile, wooden floor or SPC floor.

13. An assembled elevated floor, characterized in that: It comprises the keel structure as claimed in any one of claims 1 to 10, and also comprises modular floor tiles formed by integrating a decorative panel and a fire-retardant board, wherein the modular floor tiles are laid on the keel structure.

14. The assembled elevated floor according to claim 13, characterized in that: The decorative panel is one of ceramic tile, wooden floor or SPC floor.

15. A method for installing an assembled elevated floor, used for the assembled elevated floor as claimed in claim 13 or 14, characterized in that: The steps include: Determine the horizontal position of the side keel on the wall, and fix the side keel on two oppositely set walls; Overlap the two ends of the main keel on the side keels, adjust the extension length of each adjustable leg so that the adjustable leg touches the ground, and level the main keel; Fix the main keel and the side keel; Lay the modular floor tiles on the main keel.

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