A flat joint structure for a prefabricated composite ceramic tile large board floor in the kitchen

Abstract

The present invention relates to the technical field of prefabricated floors, and particularly to a flat joint structure for a prefabricated composite ceramic tile large board floor in a kitchen. It is used for connecting between floors, and includes a fixing structure arranged on the original floor and connecting structures respectively arranged at both ends of the floor; the connecting structure includes a connecting plate arranged on the back surface of the floor and a stop plate vertically connected to the connecting plate; the fixing structure includes adjusting feet connected to the original floor and installation keels arranged on the adjusting feet; the installation keels include a lapping surface for the connecting plate to lap and an abutting surface for abutting against the stop plate. In this application, a connecting structure is arranged on the floor to be assembled and connected with the installation keels leveled through adjusting feet on the original floor. It realizes installation and fixation by using the cooperation between the connecting plate and the lapping surface, without the use of cement, and avoids the problem of uneven floor laying caused by uneven cement coating thickness in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated floors, and particularly to a flat joint structure for a prefabricated composite ceramic tile large board floor in a kitchen. Background Art

[0002] At present, the decoration industry is developing towards industrialized modular installation. Generally speaking, floor decoration is a commonly used decoration method in interior design, which can increase the layering of the indoor space and play a role in beautifying the decoration; before laying the floor, the floor needs to be leveled before installation. The traditional leveling uses ordinary cement mortar. The treatment method of cement mortar has problems such as more wet operations, long construction period, cumbersome process, large workload, large pollution at the construction site, easy occurrence of hollowing and cracking on the floor, and it is difficult to carry out later maintenance and upkeep, etc., and it is difficult to meet the development needs of prefabricated decoration. At the same time, as the country's environmental protection requirements are getting higher and higher, the traditional decoration industry has been greatly affected. The country has forced the reduction of sand and gravel mining, resulting in the continuous rise of the price of decoration materials. In order to change this situation at the present stage, prefabricated decoration has emerged. Due to the use of dry operation construction, the amount of cement mortar used is reduced, and even without cement mortar, the floor decoration can be completely completed, which can reduce the construction duration and reduce environmental pollution.

[0003] At present, in prefabricated floor decoration, ceramic tile large boards are directly lapped on the leveled base layer, and an adhesive or cement is coated between the base layer and the ceramic tile large boards to realize the installation and fixation of the ceramic tile large boards. For example, a prefabricated floor tile laying system disclosed in the patent document with the publication number CN213329915U, which is characterized in that: it includes a lifting support, a keel and floor tiles; the keel is a hollow groove structure, including a bottom plate, side plates on both sides and a top plate, and a cavity that is open at both ends is formed by surrounding the bottom plate, side plates and top plate, and an opening that penetrates the top plate and is connected to the cavity is provided in the middle of the top plate; the keel is clamped to the lifting support; a foaming agent is filled in the cavity of the keel to form a filling layer flush with the outer surface of the top plate, and the floor tiles are laid on the top plate of the keel and adhered to the outer surface of the top plate through the filling layer. In such prefabricated floors, since the base layer has been leveled, the coating thickness of the adhesive or cement is controlled manually, and there is an easy problem of uneven coating thickness, which in turn affects the flatness of tile laying. Summary of the Invention

[0004] The present invention aims to solve the above problems and provides a flat joint structure for a prefabricated composite ceramic tile large board floor in a kitchen.

[0005] The technical solution of the present invention to solve the problem is to provide a flush connection structure for prefabricated composite ceramic tile large panels on the kitchen floor, which is used for connecting between floors. It includes a fixing structure arranged on the original floor and connection structures respectively arranged at both ends of the floor. The connection structures of two adjacent floors are connected to one fixing structure; the connection structure includes a connecting plate arranged on the back of the floor and a stop plate vertically connected to the connecting plate; the fixing structure includes adjusting feet connected to the original floor and installation keels arranged on the adjusting feet; the installation keel includes a lapping surface for the connecting plate to lap and an abutting surface for abutting against the stop plate.

[0006] As a preference of the present invention, a thickening layer is arranged on the back of the floor, and the stop plate is connected to the thickening layer.

[0007] As a preference of the present invention, it further includes a flush plate parallel to the floor, and the thickening layer is arranged between the floor and the flush plate; the thickening layer includes several single plates, and the single plates are perpendicular to the floor.

[0008] As a preference of the present invention, the connection structure further includes a reinforcing plate connected to the flush plate, and the connecting plate, the stop plate and the reinforcing plate are integrally formed.

[0009] As a preference of the present invention, the fixing structure further includes a supporting keel arranged on the adjusting feet, and the supporting keel includes a supporting surface for the flush plate to lap.

[0010] As a preference of the present invention, the supporting keel and the installation keel are perpendicular to each other.

[0011] As a preference of the present invention, the adjusting foot includes a base and a supporting seat. The base is connected to the original floor, and the base is provided with a sleeve with internal threads. The supporting seat includes a screw rod threadedly connected to the sleeve, and both the installation keel and the supporting keel are connected to the screw rod.

[0012] As a preference of the present invention, the screw rod is provided with an installation structure for installing the installation keel and the supporting keel. The installation structure includes a central plate connected to the screw rod and peripheral plates arranged at both ends of the central plate; the supporting keel includes a top plate, and both ends of the top plate are respectively lapped on the peripheral plates of the two adjusting feet, and the top surface of the top plate forms the supporting surface; the installation keel includes an installation plate connected to the central plate, receiving plates arranged at both ends of the installation plate parallel to the length direction of the supporting keel, and folding plates arranged at the ends of the receiving plates. The horizontal plane where the receiving plates are located is higher than the horizontal plane where the peripheral plates are located, the top surface of the receiving plates forms the lapping surface, and the side surface of the folding plates forms the abutting surface.

[0013] Preferably, in the present invention, the horizontal plane where the central plate is located is higher than the horizontal plane where the peripheral plate is located, and the central plate and the peripheral plate are connected by an extension plate.

[0014] Preferably, in the present invention, the mounting plate and the receiving plate are connected by a U-shaped stabilizing member. The stabilizing member includes a first reinforcing portion perpendicularly connected to the mounting plate, a connecting portion perpendicularly connected to the receiving plate, and a second reinforcing portion connecting the first reinforcing portion and the connecting portion. The first reinforcing portion abuts against the extension plate, and the second reinforcing portion abuts against the peripheral plate.

[0015] Advantages of the present invention:

[0016] 1. In this application, a connection structure is provided on the floor for assembly connection with the installation keels leveled by adjusting feet on the original ground. The installation and fixation are achieved by the cooperation between the connecting plate and the lapping surface, without the use of cement, avoiding the problem of uneven floor laying caused by uneven thickness of cement coating in the prior art. At the same time, through the cooperation between the stop baffle and the abutting surface, the lapping distance of the floor on the installation keel can be controlled, so that a splicing gap is naturally formed between two floors installed on one installation keel, ensuring the consistency of the overall splicing width of the assembled floor.

[0017] 2. In this application, a support keel is provided. Before the floor is installed, the support keel is installed on the adjusting feet to form a keel frame structure to ensure the flatness of the floor installation; after the floor is installed, it serves as the support structure of the floor to improve the support strength of the assembled floor. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a flat joint structure of a kitchen prefabricated composite ceramic tile large board floor;

[0019] Figure 2 is Figure 1 the enlarged view of part A in

[0020] Figure 3 is a schematic installation diagram of a flat joint structure of a kitchen prefabricated composite ceramic tile large board floor;

[0021] Figure 4 is Figure 3 the enlarged view of part B in

[0022] Figure 5 is a schematic structural diagram of the adjusting feet of a flat joint structure of a kitchen prefabricated composite ceramic tile large board floor from a top view perspective;

[0023] Figure 6 is a schematic structural diagram of the adjusting feet of a flat joint structure of a kitchen prefabricated composite ceramic tile large board floor from a bottom view perspective;

[0024] In the figure: adjusting foot 1, base 11, first stop ring 111a, second stop ring 111b, support seat 12, center plate 121, annular portion 121a, peripheral plate 122, support portion 122a, clamping portion 122b, extension plate 123, support keel 2, thickening layer 3, floor 4, flush plate 41, installation keel 5, installation plate 51, receiving plate 52, folding plate 53, stabilizing member 54, connecting plate 61, stop plate 62, reinforcement plate 63. DETAILED DESCRIPTION

[0025] The following are specific implementations of the present invention, and in conjunction with the accompanying drawings, the technical solution of the present invention is further described, but the present invention is not limited to these embodiments.

[0026] A kitchen assembled composite tile large slab floor flat joint structure, such as Figure 1 As shown, it is used for connecting the floors 4 to achieve cement-free, assembled installation of the floors 4. Figure 2 As shown, this flat joint structure includes a fixed structure arranged on the original ground, and connecting structures respectively arranged at both ends of the floor 4, and the connecting structures of two adjacent floor boards 4 are connected to a fixed structure.

[0027] In this application, the connection structure is as follows Figure 2 As shown in the dot-filled profile, it includes a connecting plate 61 arranged on the back of the floor 4, and a stop plate 62 vertically connected to the connecting plate 61. The connecting plate 61 is parallel to the floor 4. The end face of one end of the connecting plate 61 is flush with the splicing side of the floor 4, and the other end is used to connect the stop plate 62. An L-shaped groove structure is formed between the connecting plate 61 and the stop plate 62, and the assembled connection is mainly achieved by the groove structure in the future. Considering that if the stop plate 62 is directly suspended on the back of the floor 4, the stop plate 62 and the connecting plate 61 are easily deformed, a thickening layer 3 is usually set on the back of the floor 4, and the stop plate 62 is connected to the side of the thickening layer 3. At the same time, in order to reduce the overall weight of the floor 4, it also includes a flush plate 41 parallel to the floor 4, and the thickening layer 3 is set between the floor 4 and the flush plate 41. The thickening layer 3 includes a plurality of single boards, and the single boards are perpendicular to the floor 4. In coordination therewith, the connection structure further includes a reinforcing plate 63 connected to the leveling plate 41 , and the connecting plate 61 , the stop plate 62 , and the reinforcing plate 63 are integrally formed.

[0028] In conjunction with the above connection structure, as long as there is a profile in the fixed structure, the two ends of which can be respectively inserted into the groove structures of the two floor boards 4, the two floor boards 4 can be connected.

[0029] Based on this, the fixing structure includes an installation keel 5. The installation keel 5 includes a lapping surface for the connecting plate 61 to lap on and an abutting surface for abutting against the stop plate 62. There are many structures of the installation keel 5 with a lapping surface and an abutting surface. A relatively simple structure is, for example, that the installation keel 5 is a flat plate, its top surface forms the lapping surface, and its two side surfaces form the abutting surfaces. However, the flat plate structure has the problem that it is prone to bending under force. In this embodiment, the installation keel 5 is further modified on the flat plate structure, and the specific structure will be described in detail later. For now, it is only necessary to know that it has a top surface as the lapping surface and two side surfaces as the abutting surfaces. During installation, after fixing an installation keel 5 on the original ground, lap the connecting plate 61 at one end of the floor 4 on the lapping surface of this installation keel 5, and then move the floor 4 parallelly so that the stop plate 62 abuts against the abutting surface of this installation keel 5; then insert another installation keel 5 at the other end of the floor 4, move the installation keel 5 so that the abutting surface abuts against the stop plate 62 of the floor 4, and then fix this installation keel 5 to the original ground. And so on, install the floor 4 and the installation keel 5 in sequence, and the splicing between the floors 4 can be completed.

[0030] However, since the original ground often has the problem of unevenness, directly fixing the installation keel 5 to the original ground makes the installation keel 5 not horizontal, resulting in uneven installation of the floor 4. Therefore, the fixing structure further includes several adjusting feet 1 connected to the original ground, and the installation keel 5 is installed on the adjusting feet 1. The adjusting feet 1 are structures with adjustable heights. Due to the unevenness of the original ground, by adjusting the heights of the adjusting feet 1, the top surfaces of the adjusting feet 1 installed at different positions on the original ground can be made to be on the same horizontal plane, thereby ensuring the horizontality of the installation keel 5 installed on these adjusting feet 1, and further ensuring the horizontality of the subsequent installation of the floor 4.

[0031] The length direction of the installation keel 5 is usually parallel to the direction of the splicing side of the floor 4 for easy splicing. At this time, both splicing ends of the floor 4 are supported by two installation keels 5, but the middle part of the floor 4 is suspended, making the floor 4 prone to bending after subsequent force application. Therefore, the fixing structure usually further needs to include a supporting keel 2. The supporting keel 2 includes a supporting surface for the flush plate 41 to lap on, which is mainly used to support the middle part of the floor 4.

[0032] The supporting keel 2 can form any angle with the installation keel 5. However, to ensure its supporting strength, the supporting keel 2 is usually made parallel or perpendicular to the installation keel 5. Considering that when they are parallel, the number of adjusting feet 1 needs to be increased to specifically install the supporting keel 2. Therefore, as Figure 3 shown, the supporting keel 2 is arranged perpendicular to the installation keel 5, and the adjusting feet 1 are improved so that they can install both the installation keel 5 and the supporting keel 2. In this embodiment, as Figure 5 and Figure 6As shown, the adjusting foot 1 includes a base 11 and a support base 12. Both the base 11 and the support base 12 are made of metal components to ensure the support strength and fire resistance of the assembled floor. The base 11 is connected to the original floor. The base 11 is provided with a sleeve having internal threads. The support base 12 includes a screw rod threadedly connected to the sleeve and a mounting structure provided at the end of the screw rod. The length directions of the sleeve and the screw rod are both perpendicular to the original floor. Based on this, by rotating the screw rod, the distance from the mounting structure to the original floor can be adjusted. The mounting structure is used for subsequent installation of the support keel 2 and the mounting keel 5. In order to cooperate with the installation of the mutually perpendicular support keel 2 and the mounting keel 5, the mounting structure includes a central plate 121 provided on the end face of the screw rod and peripheral plates 122 provided at both ends of the central plate 121 along the length direction of the support keel 2. The central plate 121 is used for installing the mounting keel 5, and the peripheral plates 122 are used for installing the support keel 2. Only the general structure of the mounting structure is pointed out here, and the specific installation and cooperation method will be described later.

[0033] When installing the adjusting foot 1, usually the base 11 is first fixed to the original floor, and then the height is adjusted. Since the height is adjusted by rotating the screw rod, when the height is adjusted to a suitable position, the direction of the above-mentioned mounting structure may not be suitable for the subsequent installation of the support keel 2 and the mounting keel 5. Therefore, a mounting hole is provided at the center of the base 11, and the sleeve passes through the mounting hole, as Figure 5 and Figure 6 shown. A first stop ring 111a and a second stop ring 111b are sleeved outside the sleeve. The first stop ring 111a and the second stop ring 111b are respectively abutted against the two faces of the base 11. The first stop ring 111a and the second stop ring 111b ensure the fixation of the sleeve and the base 11, but do not affect the rotation of the sleeve. When the height of the adjusting foot 1 is adjusted to a suitable position, by rotating the sleeve, the placement direction of the mounting structure can be adjusted. Further, since the second stop ring 111b protrudes from the base 11, in order to ensure the stability of the base 11, as Figure 6As shown, the base 11 includes a base mounting plate for setting mounting holes and a base support plate provided on one side of the base mounting plate close to the original ground. The base support plate is preferably an annular side plate mounted on the side edge of the base mounting plate, and the height of the base support plate is preferably the same as that of the second stop ring 111b. The connection and fixation of the base 11 to the original ground are realized through the base mounting plate. For example, the base mounting plate can be connected to the original ground by screws. Therefore, it is preferable to provide a plurality of through holes for mounting screws on the base mounting plate. To ensure the installation stability, the plurality of through holes are evenly arranged in a ring centered on the center of the base mounting plate. The shape of the base mounting plate is not limited, but based on the ring-shaped through holes, to ensure the balance of the base mounting plate, the base mounting plate is selected to be circular. In addition, to avoid deformation of the base mounting plate, the base mounting plate is divided into a circular mounting center part for setting mounting holes and an annular mounting peripheral part for setting through holes in a direction radiating from the center outwards. There is an annular buffer part between the mounting center part and the mounting peripheral part. The mounting center part and the mounting peripheral part are flush, and the buffer part protrudes towards the direction close to the support base 12 to achieve the purpose of alleviating the mutual influence between the mounting center part and the mounting peripheral part with different forces. Further, a reinforcing rib is provided on one side of the mounting peripheral part close to the support base 12, and the length direction of the reinforcing rib is the same as the radial direction centered on the center of the base 11; the reinforcing rib is connected to the buffer part, and at least one through hole is provided between adjacent two reinforcing ribs.

[0034] After the adjusting feet 1 are installed, the support keel 2 is installed first. The support keel 2 can be commonly used in the market, such as C-shaped, U-shaped, channel-shaped, L-shaped, square pipe-shaped, etc. It has at least a top plate and a side plate provided at the end of the top plate. For example, Figure 4 As shown, in this embodiment, a square pipe-shaped support keel 2 is adopted, which is formed by splicing four plate members into a tube shape. Any one of the plate members is taken as its top plate, and the top surface of the top plate forms a support surface, and the two ends of the top plate are the side plates. During installation, the two ends of the top plate of the support keel 2 along the length direction are respectively lapped on the peripheral plates 122 of the two adjusting feet 1. On the premise that the adjusting feet 1 have been leveled, the support keel 2 is directly installed flat.

[0035] To further improve the installation strength of the support keel 2, in this embodiment, the peripheral plate 122 is further modified, as Figure 5As shown in the figure, the peripheral plate 122 includes a support portion 122a and clamping portions 122b disposed at both ends of the support portion 122a perpendicular to the length direction of the support keel 2. A clamping slot is formed between the support portion 122a and the clamping portions 122b. During installation, the top plate is lapped on the support portion 122a, and the side plate is inserted into the clamping slot. Preferably, the horizontal plane where the support portion 122a is located is lower than the horizontal plane where the clamping portions 122b are located. Further preferably, the vertical distance between the support portion 122a and the clamping portions 122b is the same as the thickness of the top plate of the support keel 2. Then, after the support keel 2 is installed, the top surface of the support keel 2 and the clamping portions 122b are exactly on the same plane, forming a flush surface, which is convenient for the subsequent smooth installation of the floor 4.

[0036] After the support keel 2 is installed, first install only one installation keel 5, and this installation keel 5 is preferably installed on the outermost row of adjusting feet 1. The structure of the installation keel 5 is as Figure 2 shown by the black-filled profile in the figure, and includes an installation plate 51 connected to the central plate 121, receiving plates 52 disposed at both ends of the installation plate 51 along the length direction of the support keel 2, and folding plates 53 disposed at the ends of the receiving plates 52. The top surface of the receiving plate 52 forms a lapping surface, and the side surface of the folding plate 53 forms an abutting surface. Preferably, several adjusting feet 1 in the same row are connected to the installation plate 51 of an installation keel 5, and the installation plate 51 and the central plate 121 can be installed by screws. The receiving plate 52 serves as a connecting member for the subsequent assembly installation of the floor 4.

[0037] At this time, since the peripheral plates 122 are provided at both ends of the central plate 121, if the central plate 121 and the peripheral plates 122 are on the same plane, and the installation plate 51 and the receiving plates 52 are also on the same plane, the receiving plates 52 will directly fit against the peripheral plates 122, and it will be difficult to play the role of assembling and installing the floor 4 subsequently. Therefore, it is necessary to raise the plane height of the receiving plates 52 or lower the height of the peripheral plates 122. As Figure 2 shown by the slant-filled profile in the figure, in this embodiment, the horizontal plane where the central plate 121 is located is higher than the horizontal plane where the peripheral plates 122 are located, and the central plate 121 and the peripheral plates 122 are connected by an extension plate 123.

[0038] Under the condition of this installation structure, if the installation plate 51 and the receiving plates 52 are on the same plane, after the installation plate 51 is installed, the receiving plates 52 are suspended on the peripheral plates 122, and the receiving plates 52 are subsequently used to install and receive the floor 4, there is a problem that the receiving plates 52 and the installation plate 51 are easily broken. Therefore, in this embodiment, the installation plate 51 and the receiving plates 52 are connected by a U-shaped stabilizing member 54. The stabilizing member 54 includes a first reinforcing portion perpendicularly connected to the installation plate 51, a connecting portion perpendicularly connected to the receiving plates 52, and a second reinforcing portion connecting the first reinforcing portion and the connecting portion. The first reinforcing portion abuts against the extension plate 123, and the second reinforcing portion abuts against the peripheral plates 122.

[0039] After installing the outermost installation keel 5, install the floor 4. During installation, first install the connection structure at both ends of the floor 4, place the floor 4 on the support keel 2, then translate the floor 4 so that the connecting plate 61 at one end of the floor 4 is placed on the receiving plate 52, and continue to translate until the stop plate 62 abuts against the folded edge plate 53. Then, insert an installation keel 5 at the other end of the floor 4, and fix the installation plate 51 of the installation keel 5 to the central plate 121 of the adjusting foot 1. And so on, install the overall floor and the installation keel 5 in sequence to complete the butt joint of the floor 4.

[0040] In addition, based on the above structure, it can be seen that for the installation structure of the adjusting foot 1, the center is supported by the upward force of the screw rod, and the two ends are pressed downward by the keel, and the installation structure is prone to deformation. In order to avoid the deformation of the installation structure, in this embodiment, firstly, the structure in which the horizontal plane where the peripheral plate 122 is located is lower than the horizontal plane where the central plate 121 is located is used to relieve the deformation at the connection between the peripheral plate 122 and the central plate 121. Secondly, it is necessary to relieve the deformation of the central plate 121 itself. As Figure 6 shown, a convex ring is provided on the back surface of the central plate 121, that is, the surface of the central plate 121 close to the base 11. When the screw rod is inserted into the convex ring and the end of the central plate 121 is deformed downward under pressure, the convex ring will be driven to deform, and the insertion of the screw rod stops this deformation trend, thus stopping the deformation of the central plate 121. At the same time, internal threads can be provided in the convex ring to be threadedly connected with the screw rod, and the direction of its threaded connection with the screw rod should be opposite to the direction of the threaded connection between the screw rod sleeve. At this time, on the one hand, the detachable connection method is convenient for replacing damaged components. On the other hand, the deformation trend of the convex ring will instead strengthen the connection between the convex ring and the screw rod, improving the connection effect. This convex ring can be provided on the central plate 121 in any way. In this embodiment, as Figure 6 shown, a circular ring portion 121a is provided at the center of the central plate 121. The circular ring portion 121a protrudes towards the base 11 relative to the main body of the central plate 121 to form this convex ring on the surface of the central plate 121 close to the base 11. On the one hand, it reduces the material cost. On the other hand, this method also forms a concave ring on the surface of the central plate 121 away from the base 11. The central plate 121 is provided with a stress relief groove communicating with the concave ring. The concave ring and the stress relief groove play a buffering role to prevent the central plate 121 from cracking. Considering the stress direction of the central plate 121, the stress relief groove is strip-shaped, and the length direction of the stress relief groove is perpendicular to the straight line direction where the center points of the two peripheral plates 122 are located.

[0041] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A flat joint structure for prefabricated composite ceramic tile large slabs in the kitchen, used for connecting between floors (4), characterized in that: It includes a fixing structure arranged on the original ground and connecting structures respectively arranged at both ends of the floor (4), and the connecting structures of two adjacent floors (4) are connected to one fixing structure; the connecting structure includes a connecting plate (61) arranged on the back of the floor (4) and a stop plate (62) vertically connected to the connecting plate (61); the fixing structure includes an adjusting foot (1) connected to the original ground and a mounting keel (5) arranged on the adjusting foot (1); the mounting keel (5) includes a lapping surface for lapping the connecting plate (61) and an abutting surface for abutting against the stop plate (62). A thickening layer (3) is arranged on the back of the floor (4), and the stop plate (62) is connected to the thickening layer (3); it also includes a flush plate (41) parallel to the floor (4), and the thickening layer (3) is arranged between the floor (4) and the flush plate (41); the thickening layer (3) includes several single plates, and the single plates are perpendicular to the floor (4). The connecting structure also includes a reinforcing plate (63) connected to the flush plate (41), and the connecting plate (61), the stop plate (62) and the reinforcing plate (63) are integrally formed. The fixing structure also includes a supporting keel (2) arranged on the adjusting foot (1), and the supporting keel (2) includes a supporting surface for lapping the flush plate (41); the supporting keel (2) and the mounting keel (5) are perpendicular to each other. The adjusting foot (1) includes a base (11) and a supporting seat (12), the base (11) is connected to the original ground, the base (11) is provided with a sleeve with internal threads, the supporting seat (12) is provided with a screw rod threadedly connected to the sleeve, and both the mounting keel (5) and the supporting keel (2) are connected to the screw rod. The screw rod is provided with a mounting structure for mounting the mounting keel (5) and the supporting keel (2), and the mounting structure includes a central plate (121) connected to the screw rod and peripheral plates (122) arranged at both ends of the central plate (121); the supporting keel (2) includes a top plate, both ends of the top plate are respectively lapped on the peripheral plates (122) of the two adjusting feet (1), and the top surface of the top plate forms the supporting surface; the mounting keel (5) includes a mounting plate (51) connected to the central plate (121), receiving plates (52) arranged at both ends of the mounting plate (51) parallel to the length direction of the supporting keel (2), and folding plates (53) arranged at the ends of the receiving plates (52), the horizontal plane where the receiving plates (52) are located is higher than the horizontal plane where the peripheral plates (122) are located, the top surface of the receiving plates (52) forms the lapping surface, and the side surface of the folding plate (53) forms the abutting surface.

2. The flat joint structure of the assembled composite ceramic tile large board floor according to claim 1, wherein: The horizontal plane where the central plate (121) is located is higher than the horizontal plane where the peripheral plates (122) are located, and the central plate (121) and the peripheral plates (122) are connected by an extension plate (123).

3. A flat joint structure for a prefabricated composite ceramic tile large board floor in a kitchen according to claim 2, characterized in that: The mounting plate (51) and the receiving plate (52) are connected by a U-shaped stabilizing member (54). The stabilizing member (54) includes a first reinforcing portion perpendicularly connected to the mounting plate (51), a connecting portion perpendicularly connected to the receiving plate (52), and a second reinforcing portion connecting the first reinforcing portion and the connecting portion. The first reinforcing portion abuts against the extension plate (123), and the second reinforcing portion abuts against the peripheral plate (122).

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