A kitchen prefabricated floor base leveling system

Abstract

The present invention relates to the technical field of prefabricated floors, and particularly to a leveling system for the base layer of a kitchen prefabricated floor. It includes adjusting feet, leveling keels, and base plates, and further includes calibration keels provided on the adjusting feet. Both the leveling keels and the calibration keels include overlapping surfaces, and the overlapping surfaces of the leveling keels and the calibration keels are not on the same horizontal plane; a connecting profile is provided at the end of the base plate, and the connecting profile includes a calibration plate, and the surface of the calibration plate away from the original ground is flush with the surface of the base plate away from the original ground; the bottom surface of the base plate overlaps on the overlapping surface of the leveling keel, and the calibration plate overlaps on the overlapping surface of the calibration keel. In this application, first, basic leveling is achieved through the leveling keels that have been leveled by the adjusting feet, and then leveling calibration is achieved through the calibration keels that have been leveled by the adjusting feet, providing double guarantee for the flatness of the prefabricated floor.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated floors, and particularly to a leveling system for the base layer of a kitchen prefabricated floor. Background Art

[0002] Currently, the decoration industry is developing towards industrialized modular installation. Generally, 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 for 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 repair, etc., and it is difficult to meet the requirements of the development 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 increase in the price of decoration materials. In order to change this situation at the present stage, prefabricated decoration has emerged. Since the construction is carried out by dry operation, the amount of cement mortar used is reduced, and even the floor decoration can be completely completed without using cement mortar, which can reduce the construction duration and reduce environmental pollution.

[0003] In prefabricated floor decoration, the base layer is generally leveled through leveling feet, keel frames and base plates, and then the floor is laid on the leveled base layer. For example, a prefabricated floor adjustable leveling component disclosed in the patent document with the publication number CN211817776U belongs to the technical field of floor leveling in the construction industry. It includes a bottom plate, an adjusting screw, an adjusting nut, a support plate and a locking nut. The lower end of the adjusting screw is vertically connected to the upper end of the bottom plate. The adjusting nut and the locking nut are sequentially sleeved on the adjusting screw. A support vertical plate for fixing the keel is arranged on the upper end surface of the support plate. The support plate is sleeved on the adjusting screw and is located between the adjusting nut and the locking nut. It also includes a main keel and a secondary keel. A sleeving hole is opened in the middle of the main keel. The main keel can be sleeved outside the locking nut, and the central axis of the main keel intersects with the axis of the locking nut. The secondary keel is arranged on both sides of the main keel, and one corresponding end of the secondary keel can be sleeved in the groove-shaped structure formed by the support vertical plate and the support plate and can be locked by screws. After installation, the base plate is also fixed to the main keel and the secondary keel by screws outside the main keel and the secondary keel.

[0004] In such prefabricated floors, generally after the adjusting feet and the keel frames are installed, it is basically considered that the leveling operation is completed. When directly installing the base layer and the floor layer on the keel frame subsequently, no leveling and calibration will be carried out again. However, if there are thickness differences between several base plates, then the base layer formed by splicing the base plates on the flat keel frame will also have uneven problems, affecting the flatness of the floor installed on the base layer subsequently. Summary of the Invention

[0005] The present invention aims to solve the above problems and provides a leveling system for the prefabricated ground base of a kitchen.

[0006] The technical solution for the present invention to solve the problem is to provide a leveling system for the prefabricated ground base of a kitchen, which includes a number of adjusting feet arranged on the original ground, a leveling keel arranged between adjacent two adjusting feet, and a base plate arranged on the leveling keel. It also includes a calibration keel arranged on the adjusting feet. Both the leveling keel and the calibration keel include overlapping surfaces, and the overlapping surfaces of the leveling keel and the calibration keel are not on the same horizontal plane; the end of the base plate is provided with a connecting profile, and the connecting profile includes a calibration plate, and the surface of the calibration plate away from the original ground is flush with the surface of the base plate away from the original ground; the bottom surface of the base plate overlaps on the overlapping surface of the leveling keel, and the calibration plate overlaps on the overlapping surface of the calibration keel.

[0007] Preferably, the connecting profile further includes a connecting plate connected to the side surface of the base plate, and the calibration plate is integrally formed with the connecting plate.

[0008] Preferably, the leveling keel and the calibration keel are perpendicular to each other.

[0009] Preferably, the adjusting foot includes a base and a support seat. The base is connected to the original ground, and the base is provided with a sleeve with internal threads. The support seat includes a screw rod threadedly connected to the sleeve and an installation structure connected to the screw rod. Both the leveling keel and the calibration keel are connected to the installation structure.

[0010] Preferably, the installation structure includes a central plate connected to the screw rod and peripheral plates arranged at both ends of the central plate; the leveling keel includes a top plate, and both ends of the top plate respectively overlap on the peripheral plates of the two adjusting feet, and the top surface of the top plate forms the overlapping surface of the leveling keel; the calibration keel includes an installation plate connected to the central plate and receiving plates arranged at both ends of the installation plate parallel to the length direction of the leveling keel, and the top surface of the receiving plate forms the overlapping surface of the calibration keel.

[0011] Preferably, the peripheral plate includes a support portion and clamping portions arranged at both ends of the support portion perpendicular to the length direction of the leveling keel. A clamping slot is formed between the support portion and the clamping portions. The leveling keel further includes side plates arranged at both ends of the top plate, and the top plate overlaps on the support portion, and the side plates are inserted into the clamping slot.

[0012] Preferably in the present invention, a circular ring portion is provided at the center of the central plate. The circular ring portion protrudes towards the base relative to the central plate body, so as to form a convex ring on the side of the central plate close to the base, and the screw is inserted into the convex ring.

[0013] Preferably in the present invention, the circular ring portion protrudes towards the base relative to the central plate body, so as to form a concave ring on the side of the central plate away from the base, and the central plate is provided with a force relief groove communicating with the concave ring.

[0014] Preferably in the present invention, an installation hole is provided at the center of the base. The sleeve passes through the installation hole, and a first stop ring and a second stop ring are sleeved outside the sleeve. The first stop ring and the second stop ring are respectively in contact with the two sides of the base.

[0015] Preferably in the present invention, the base includes a base mounting plate for setting the installation hole and a base support plate provided on the side of the base mounting plate close to the original ground. The base mounting plate is also provided with a plurality of through holes for installing screws.

[0016] Advantages of the present invention:

[0017] In the present application, first, the bottom surface of the base plate is directly lapped on the leveling keel, and basic leveling is achieved through the leveling keel that has been leveled by the adjusting feet. Then, the base plate needs to be lapped on the calibration keel through the connecting profile, and leveling and calibration are achieved through the calibration keel that has been leveled by the adjusting feet. At this time, if the base plate cannot be smoothly lapped with the calibration keel, it means that the thickness of the base plate is inappropriate and the base plate needs to be replaced; thus ensuring the flatness of the assembled floor. Description of the drawings

[0018] Figure 1 is the front view of a leveling system for the base of a kitchen assembled floor;

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

[0020] Figure 3 is the bottom view of a leveling system for the base of a kitchen assembled floor;

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

[0022] Figure 5 is the structural schematic diagram of the adjusting feet in a leveling system for the base of a kitchen assembled floor from the top view perspective;

[0023] Figure 6 is the structural schematic diagram of the adjusting feet in a leveling system for the base of a kitchen assembled floor from the bottom view perspective;

[0024] In the figure: adjusting feet 1, base 11, base mounting plate 111, first stop ring 111a, second stop ring 111b, base support plate 112, support seat 12, center plate 121, circular ring part 121a, load relief groove 121b, peripheral plate 122, support part 122a, clamping part 122b, extension plate 123, leveling keel 2, base plate 3, calibration keel 5, mounting plate 51, receiving plate 52, flanging plate 53, stabilizing member 54, calibration plate 61, connecting plate 62. Specific implementation manner

[0025] The following are the specific implementation manners of the present invention. In combination with the accompanying drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0026] A kitchen prefabricated floor base leveling system, as Figure 1 shown, includes a plurality of adjusting feet 1 arranged on the original floor, a leveling keel 2 arranged between two adjacent adjusting feet 1, and a base plate 3 arranged on the leveling keel 2. This application also includes a calibration keel 5 arranged on the adjusting feet 1. Both the leveling keel 2 and the calibration keel 5 include lapping surfaces. Generally speaking, the top surfaces of the leveling keel 2 and the calibration keel 5 are the lapping surfaces. As Figure 2 shown, the lapping surfaces of the leveling keel 2 and the calibration keel 5 are not on the same horizontal plane. The base plate 3 is arranged between the lapping surface of the leveling keel 2 and the lapping surface of the calibration keel 5. Taking the leveling keel 2 as the reference for the base plate 3, the thickness of the base plate 3 is calibrated by the calibration keel 5.

[0027] The length direction of the leveling keel 2 and the length direction of the calibration keel 5 can form any angle. However, in order to ensure its support strength, usually the leveling keel 2 is parallel or perpendicular to the calibration keel 5. Considering that when they are parallel, the number of adjusting feet 1 needs to be increased to specifically install the calibration keel 5. Therefore, as Figure 3 shown, the leveling keel 2 and the calibration keel 5 are arranged vertically, and by improving the adjusting feet 1, it can install both the calibration keel 5 and the leveling keel 2. For the convenience of description, the direction parallel to the length of the leveling keel 2 is called "row", and the direction perpendicular to the length of the leveling keel 2 is called "column". Among several adjusting feet 1 in the same row, a leveling keel 2 is arranged between adjacent adjusting feet 1; several adjusting feet 1 in the same column are connected by a calibration keel 5.

[0028] During installation, first install the adjusting feet 1 on the original floor. The several adjusting feet 1 are evenly distributed on the original floor. The adjusting feet 1 are a structure with adjustable height. Since the original floor has unevenness problems, by adjusting the height of the adjusting feet 1, the top surfaces of the adjusting feet 1 installed at different positions on the original floor can be on the same horizontal plane, and the horizontal plane where these top surfaces of the adjusting feet 1 are located is the leveling plane of the prefabricated floor.

[0029] There can be various structures for the height-adjustable adjusting foot 1. In this embodiment, as Figure 5 and Figure 6 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 ground. 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 an installation structure provided at the end of the screw rod. The length directions of both the sleeve and the screw rod are perpendicular to the original ground. Based on this, by rotating the screw rod, the distance from the installation structure to the original ground can be adjusted. The installation structure is used for subsequent installation of the leveling keel 2 and the calibration keel 5. In order to cooperate with the installation of the mutually perpendicular leveling keel 2 and calibration keel 5, the installation 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 leveling keel 2. The central plate 121 is used for installing the calibration keel 5, and the peripheral plates 122 are used for installing the leveling keel 2.

[0030] When installing the adjusting foot 1, usually the base 11 is first fixed to the original ground, and then the height is adjusted. Since the height is adjusted by rotating the screw rod, when the height is adjusted to the appropriate position, the direction of the above installation structure may not be suitable for the subsequent installation of the leveling keel 2 and the calibration keel 5. Therefore, an installation hole is provided at the center of the base 11, and the sleeve passes through the installation 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 the appropriate position, by rotating the sleeve, the placement direction of the installation structure can be adjusted.

[0031] Furthermore, 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 111 for setting mounting holes, and a base support plate 112 provided on the side of the base mounting plate 111 close to the original ground. The base support plate 112 is preferably an annular side plate and is installed on the side edge of the base mounting plate 111. The height of the base support plate 112 is preferably the same as the height 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 111. For example, the base mounting plate 111 can be connected to the original ground by screws. Therefore, it is preferable to provide a plurality of through holes for installing screws on the base mounting plate 111. 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 111. The shape of the base mounting plate 111 is not limited, but based on the ring-shaped through holes, in order to ensure the balance of the base mounting plate 111, the base mounting plate 111 is selected to be circular.

[0032] In addition, to avoid deformation of the base mounting plate 111, the base mounting plate 111 is divided into a circular mounting center part for setting mounting holes and a ring-shaped 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 the side of the mounting peripheral part close to the support base 12. 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.

[0033] After installing the adjusting feet 1, install the leveling keel 2. The leveling keel 2 can be commonly used C-shaped, U-shaped, several-shaped, L-shaped, square tube-shaped, etc. in the market. It has at least one 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 tube-shaped leveling keel 2 is adopted. It 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 its overlapping surface. The two ends of the top plate are the side plates. During installation, the two ends of the top plate of the leveling keel 2 along the length direction are respectively overlapped on the peripheral plates 122 of the two adjusting feet 1. On the premise that the adjusting feet 1 have been leveled, the leveling keel 2 is directly installed flat.

[0034] To further improve the installation strength of the leveling keel 2, in this embodiment, the peripheral plate 122 is further modified. For example, Figure 4As shown in the figure, the peripheral plate 122 includes a support portion 122a and clamping portions 122b provided at both ends of the support portion 122a perpendicular to the length direction of the leveling keel 2. A clamping gap 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 gap. 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 leveling keel 2. Then, after the leveling keel 2 is installed, the top surface of the leveling keel 2 and the clamping portions 122b are exactly on the same plane, forming a flush surface, which is convenient for the subsequent stable installation of the base plate 3.

[0035] After the leveling keel 2 is installed, first, only one calibration keel 5 is installed. This calibration keel 5 is preferably installed on the outermost row of adjusting feet 1. The structure of the calibration keel 5 is as Figure 2 shown by the black-filled profile in the figure, and includes a mounting plate 51 connected to the central plate 121 and receiving plates 52 provided at both ends of the mounting plate 51 along the length direction of the leveling keel 2. Preferably, several adjusting feet 1 in the same row are connected to the mounting plate 51 of a calibration keel 5. The mounting plate 51 and the central plate 121 can be installed by screws. The top surface of the receiving plate 52 forms its lapping surface.

[0036] 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 mounting plate 51 and the receiving plates 52 are also on the same plane, the receiving plates 52 will directly contact the peripheral plates 122, making it impossible to install the base plate 3 with a certain thickness. 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.

[0037] Under the condition of this installation structure, if the mounting plate 51 and the receiving plates 52 are on the same plane, after the mounting plate 51 is installed, the receiving plates 52 are suspended on the peripheral plates 122, and the receiving plates 52 are used to receive the base plate 3. There is a problem that the receiving plates 52 and the mounting plate 51 are prone to breakage. Therefore, in this embodiment, the mounting plate 51 and the receiving plates 52 are connected by a U-shaped stabilizing member 54. The stabilizing member includes a first reinforcing portion perpendicularly connected to the mounting 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.

[0038] After installing the outermost calibration keel 5, start installing the base plate 3. The end of the base plate 3 is provided with a connecting profile. The connecting profile includes a calibration plate 61. The side of the calibration plate 61 away from the original ground is flush with the side of the base plate 3 away from the original ground. To ensure the connection strength between the calibration plate 61 and the base plate 3, the connecting profile further includes a connecting plate 62 connected to the side of the base plate 3. The calibration plate 61 and the connecting plate 62 are integrally formed.

[0039] During installation, first, place the bottom surface of the base plate 3 with a standard thickness on the overlapping surface of the leveling keel 2, and then translate the base plate 3 so that its calibration plate 61 is above the overlapping surface of the installed calibration keel 5. Since the calibration keel 5 is screwed to the center plate 121, the height of the calibration keel 5 can be adjusted so that the overlapping surface of the calibration keel 5 abuts against the calibration plate 61 on the standard base plate 3. Then insert another calibration keel 5 into the connecting profile at the other end of the base plate 3 and adjust the height of the calibration keel 5 so that its overlapping surface abuts against the calibration plate 61 of the base plate 3. Then select any base plate 3, place its bottom surface on the overlapping surface of the leveling keel 2, and translate the base plate 3 so that the installed calibration plate 61 overlaps on the overlapping surface of the calibration keel 5. If the overlap is not smooth, it means that the thickness of the base plate 3 is too narrow. If the overlap is smooth, it is also necessary to observe whether there is a gap between the calibration plate 61 and the overlapping surface. If there is a gap, it means that the thickness of the base plate 3 is too high. After selecting the base plate 3 with a suitable thickness and completing the installation, insert the calibration keel 5 into the connecting profile at the other end of the base plate 3 and adjust and fix it. And so on, complete the installation of the base plate 3 and the calibration keel 5.

[0040] In addition, based on the above structure, it can be seen that for the installation structure of the adjusting feet 1, its center plate 121 only plays a connecting role and is supported upward by the screw rod, while the peripheral plates 122 at both ends are subjected to the downward pressure of the keel, and the installation structure is easily deformed. To avoid the deformation of the installation structure, in this embodiment, firstly, the structure that the horizontal plane where the peripheral plate 122 is located is lower than the horizontal plane where the center plate 121 is located is used to relieve the deformation at the connection between the peripheral plate 122 and the center plate 121. Secondly, it is necessary to relieve the deformation of the center plate 121 itself, such as Figure 6As shown in the figure, a convex ring is provided on the back surface of the central plate 121, that is, the side of the central plate 121 close to the base 11. When the screw 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. However, the insertion of the screw stops this deformation trend, thereby stopping the deformation of the central plate 121. At the same time, internal threads can also be provided in the convex ring to be threadedly connected with the screw, and the direction of its threaded connection with the screw should be opposite to the direction of the threaded connection between the screw sleeve. In this case, on the one hand, the detachable connection method facilitates the replacement of 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, improving the connection effect. This convex ring can be provided on the central plate 121 in any way. In this embodiment, as Figure 5 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 side 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 side of the central plate 121 away from the base 11. The central plate 121 is provided with a stress relief groove 121b communicating with the concave ring. The concave ring and the stress relief groove 121b 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 121b is strip-shaped, and the length direction of the stress relief groove 121b 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 of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A kitchen prefabricated floor base leveling system, comprising a number of adjusting feet (1) arranged on the original floor, a leveling keel (2) arranged between two adjacent adjusting feet (1), and a base plate (3) arranged on the leveling keel (2), characterized in that: It further includes a calibration keel (5) arranged on the adjusting foot (1). Both the leveling keel (2) and the calibration keel (5) include lapping surfaces, and the lapping surfaces of the leveling keel (2) and the calibration keel (5) are not on the same horizontal plane; the end of the base plate (3) is provided with a connecting profile, and the connecting profile includes a calibration plate (61). The side of the calibration plate (61) away from the original ground is flush with the side of the base plate (3) away from the original ground; the bottom surface of the base plate (3) is lapped on the lapping surface of the leveling keel (2), and the calibration plate (61) is lapped on the lapping surface of the calibration keel (5). The connecting profile further includes a connecting plate (62) connected to the side of the base plate (3), and the calibration plate (61) is integrally formed with the connecting plate (62). The adjusting foot (1) includes a base (11) and a support base (12). The base (11) is connected to the original ground. 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 connected to the screw rod. Both the leveling keel (2) and the calibration keel (5) are connected to the mounting structure. 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 leveling keel (2) includes a top plate, and 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 lapping surface of the leveling keel (2); the calibration keel (5) includes a mounting plate (51) connected to the central plate (121) and receiving plates (52) arranged at both ends of the mounting plate (51) parallel to the length direction of the leveling keel (2), and the top surface of the receiving plate (52) forms the lapping surface of the calibration keel (5).

2. The leveling system for the prefabricated kitchen floor base according to claim 1, characterized in that: The leveling keel (2) and the calibration keel (5) are perpendicular to each other.

3. A leveling system for the prefabricated kitchen floor base according to claim 1, characterized in that: The peripheral plate (122) includes a supporting part (122a) and clamping parts (122b) arranged at both ends of the supporting part (122a) perpendicular to the length direction of the leveling keel (2). A clamping slot is formed between the supporting part (122a) and the clamping parts (122b). The leveling keel (2) further includes side plates arranged at both ends of the top plate. The top plate is lapped on the supporting part (122a), and the side plates are inserted into the clamping slot.

4. A leveling system for a prefabricated kitchen floor base according to claim 1, characterized in that: A circular ring part (121a) is arranged at the center of the central plate (121). The circular ring part (121a) protrudes towards the base (11) relative to the body of the central plate (121) to form a convex ring on the side of the central plate (121) close to the base (11), and the screw rod is inserted into the convex ring.

5. A leveling system for a prefabricated kitchen floor base according to claim 4, characterized in that: The circular ring part (121a) protrudes towards the base (11) relative to the body of the central plate (121) to form a concave ring on the side of the central plate (121) away from the base (11). The central plate (121) is provided with a stress relief groove (121b) communicated with the concave ring.

6. A leveling system for prefabricated kitchen floor base according to claim 1, characterized in that: The center of the base (11) is provided with a mounting hole, the sleeve passes through the mounting hole, a first stop ring (111a) and a second stop ring (111b) are sleeved outside the sleeve, and the first stop ring (111a) and the second stop ring (111b) are respectively in contact with two surfaces of the base (11).

7. The leveling system for the prefabricated kitchen floor base according to claim 6, characterized in that: The base (11) includes a base mounting plate (111) for setting the mounting hole and a base support plate (112) arranged on one side of the base mounting plate (111) close to the original ground. The base mounting plate (111) is also provided with a plurality of through holes for installing screws.

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