An assembled floor

Abstract

The application provides an assembled floor, and belongs to the technical field of floor installation. The assembled floor comprises a base, a panel and a floor. The floor is arranged on the upper end of the panel, that is, the floor is arranged on the top end of the second body, the panel is connected to the base, the second body is clamped in the second clamping groove, the hook plate is clamped in the first clamping groove, the supporting plate is clamped in the hook groove, the hook plate and the supporting plate are adaptively hung, the base and the panel are tightly connected, after the panel and the base are connected, water seeps between the panel and the base and remains in the first clamping groove, water continues to seep and affects the assembly structure is avoided, rusting of the panel and the base is avoided, and subsequent maintenance is facilitated.

Description

Technical Field

[0001] This invention relates to the field of floor installation technology, and more specifically to a prefabricated floor. Background Technology

[0002] Existing prefabricated flooring is difficult to assemble and disassemble, and the gaps between the panels are prone to water leakage, which affects the assembly structure, causes rust, and makes maintenance troublesome.

[0003] Chinese Patent CN112360106A, published on 2021-02-12, discloses a prefabricated repair wood flooring with good sealing performance, belonging to the field of wood flooring technology. It includes a first composite board, side blocks, and a second composite board, with the side blocks fixedly installed on the outer wall of the first composite board. In this prior art, a lifting plate, mounting shell, pulleys, protrusions, and an L-shaped rod are installed. A water-absorbing plate is provided inside the mounting shell. Water residue on the outer surface of the soft board flows into the water-absorbing plate through a through-hole inside the cover plate. The water-absorbing plate absorbs the water. When the water-absorbing plate inside the mounting shell needs to be removed for replacement, the handle is held, pushing the handle moves the L-shaped rod, causing a third spring to retract. This disengages one end of the L-shaped rod from a slot inside the first composite board. Then, pushing the fixing pin moves the fixing pin, simultaneously causing a fourth spring to retract. The fixing pin disengages from the slot inside the first composite board, causing the pulley to slide within a limiting groove, thus enabling the replacement of the water-absorbing plate. The gap between the first and second composite panels in the aforementioned patent is prone to water leakage, which affects the assembly structure, causes rust, and makes maintenance troublesome. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a prefabricated floor.

[0005] This invention proposes a prefabricated floor, comprising a base, a panel disposed on the upper end of the base, and a floor disposed on the upper end of the panel. The base includes a first body, a first cavity disposed inside the first body, a support plate disposed on the upper end of the first cavity, a first slot disposed between the support plate and the inner wall of the first body, and a second slot disposed in the first cavity located inside the support plate. The panel includes a second body, a hook plate connected to the top end of the second body, and a hook groove disposed between the hook plate and the second body. The second body is engaged with the second slot, the hook plate is engaged with the first slot, and the support plate is engaged with the hook groove.

[0006] Furthermore, the height of the top of the support plate is less than the height of the top of the first body, and the second body remains flush with the top of the first body when it is engaged in the second slot.

[0007] Furthermore, the first body has an arc-shaped groove located below the support plate, the second body has a storage groove at its side end, the second body has a first mounting groove in its middle and a connecting through hole at both ends connected to the first mounting groove and the storage groove, and also includes a first elastic structure, a first rotating shaft, a winding wheel, a pull rope, a roller assembly, and a winding wheel disposed in the first mounting groove. The roller assembly is rotatably connected to the groove wall of the storage groove through the first rotating shaft. One end of the pull rope is wound around the winding wheel, and the other end passes through the connecting through hole and is connected to the first rotating shaft. The first elastic structure is disposed on the first rotating shaft. When the winding wheel rotates along a first preset direction, the pull rope pulls the first rotating shaft to move in a direction that overcomes the elastic force of the first elastic structure, so that the first rotating shaft drives one end of the roller assembly to move to engage with the arc-shaped groove. When the winding wheel rotates along a second preset direction, the pull rope releases the first rotating shaft, and the first elastic structure pulls one end of the roller assembly to move into the storage groove.

[0008] Furthermore, the inner side of the second body is also provided with a second mounting groove connected to the middle of the first mounting groove, and also includes a threaded shaft and a second elastic structure. One end of the second elastic structure is connected to the bottom end of the second mounting groove, and one end of the threaded shaft is screwed to the middle of the winding wheel and connected to the other end of the second elastic structure. When one end of the threaded shaft is engaged with the arc-shaped groove, the top end of the threaded shaft is flush with the top end of the second body. When the roller assembly is set in the storage groove, the second elastic structure pushes the top end of the threaded shaft to protrude outward from the outside of the second body.

[0009] Furthermore, it also includes a groove disposed on the second body and connected to the second mounting groove, a fixing groove disposed on the inner side of the second body and connected to the groove, a locking hole provided on the threaded shaft, and a locking member slidably connected to the fixing groove, one end of the locking member extending into the groove and locking into the locking hole.

[0010] Furthermore, it also includes a third elastic structure with one end connected to the fixing groove and the other end connected to the other end of the card.

[0011] Furthermore, the card is provided with an oblique groove.

[0012] Furthermore, it also includes a flat plate that is slidably disposed inside the bottom of the first cavity, and the bottom of the second body abuts against the flat plate when it is engaged with the second slot.

[0013] Furthermore, it also includes an elastic support leg with one end connected to the bottom of the flat plate and the other end connected to the bottom of the first cavity.

[0014] Furthermore, the arc-shaped grooves are arranged in two symmetrical configurations, the storage grooves are arranged in two symmetrical configurations, the roller assemblies are arranged in two symmetrical configurations, the first rotating shafts are arranged in two symmetrical configurations, the pull ropes are arranged in two symmetrical configurations, the connecting through holes are arranged in two symmetrical configurations, and the first elastic structures are arranged in two symmetrical configurations.

[0015] The prefabricated flooring of the present invention has the following beneficial effects:

[0016] The floor is placed on top of the panel, that is, the floor is placed on the top of the second body. The panel is connected to the base, the second body is snapped into the second slot, the hook plate is snapped into the first slot, and the support plate is snapped into the hook slot. The hook plate and the support plate are fitted and hooked together to achieve a tight connection between the base and the panel. After the panel and the base are connected, water seeps into the space between the panel and the base and remains in the first slot, preventing water from continuing to seep in and affecting the assembly structure, preventing the panel and the base from rusting, and facilitating subsequent maintenance. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention. In these drawings, similar reference numerals are used to denote similar elements. The drawings described below are some embodiments of the invention, but not all embodiments. Other drawings will be readily available to those skilled in the art based on these drawings without any inventive effort.

[0018] Figure 1 This is a schematic diagram of the structure of a roller assembly in a prefabricated floor according to an embodiment of the present invention, in which one end of the roller assembly is engaged with an arc-shaped groove and the clip is engaged with a clip hole.

[0019] Figure 2 This is a schematic diagram of the structure of a prefabricated floor in an embodiment of the present invention, in which one end of the roller assembly moves into the storage groove and the other end of the threaded shaft protrudes from the top of the panel.

[0020] Figure 3 This is a schematic diagram of the structure of the base in a prefabricated floor according to an embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional view of the base in a prefabricated floor according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of a panel in a prefabricated floor according to an embodiment of the present invention;

[0023] Figure 6 This is a cross-sectional view of a panel in a prefabricated floor according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of a threaded shaft in a prefabricated floor according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of a clip in a prefabricated floor according to an embodiment of the present invention.

[0026] In the diagram: 1-base, 11-support plate, 12-arc groove, 13-first slot, 14-first body, 2-panel, 21-first mounting groove, 22-storage groove, 23-groove, 24-hook plate, 25-hook groove, 26-second body, 3-winding wheel, 4-pull rope, 5-roller assembly, 51-first shaft, 6-threaded shaft, 61-slot hole, 62-second elastic structure, 71-clamping piece, 72-third elastic structure, 81-elastic support leg, 82-flat plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0028] Please see Figures 1 to 8 The prefabricated floor of this invention includes a base 1, a panel 2 disposed on the upper end of the base 1, and a floor disposed on the upper end of the panel 2. The base 1 includes a first body 14, a first cavity disposed inside the first body 14, a support plate 11 disposed on the upper end of the first cavity, a first slot 13 disposed between the support plate 11 and the inner wall of the first body 14, and a second slot disposed in the first cavity located inside the support plate 11. The panel 2 includes a second body 26, a hook plate 24 connected to the top end of the second body 26, and a hook groove 25 disposed between the hook plate 24 and the second body 26. The second body 26 is engaged with the second slot, the hook plate 24 is engaged with the first slot 13, and the support plate 11 is engaged with the hook groove 25.

[0029] Here, the floor is set on the upper part of the panel 2, that is, the floor is set on the top of the second body 26, the panel 2 is connected to the base 1, the second body 26 is snapped into the second slot, the hook plate 24 is snapped into the first slot 13, the support plate 11 is snapped into the hook slot 25, the hook plate 24 and the support plate 11 are matched and hooked together to realize the fast connection between the base 1 and the panel 2. After the panel 2 and the base 1 are connected, water seeps into the space between the panel 2 and the base 1 and remains in the first slot 13, which prevents water from continuing to seep in and affecting the assembly structure, and prevents the panel 2 and the base 1 from rusting, which facilitates subsequent maintenance.

[0030] The height of the top of the support plate 11 can be less than the height of the top of the first body 14. When the second body 26 is engaged in the second slot, it remains flush with the top of the first body 14, which facilitates the connection between the panel 2 and the base 1.

[0031] The first body 14 may have an arc-shaped groove 12 located below the support plate 11. The second body 26 has a storage groove 22 on its side end. The second body 26 has a first mounting groove 21 in the middle and connecting through holes at both ends that are respectively connected to the first mounting groove 21 and the storage groove 22. It also includes a first elastic structure, a first rotating shaft 51, a rope winding wheel 3, a pull rope 4, a roller assembly 5, and a rope winding wheel 3 disposed in the first mounting groove 21. The roller assembly 5 is rotatably connected to the groove wall of the storage groove 22 through the first rotating shaft 51. One end of the pull rope 4 is wound The first end of the rope 4 is wound around the winding wheel 3, and the other end passes through the connecting hole and is connected to the first rotating shaft 51. The first elastic structure is disposed on the first rotating shaft 51. When the winding wheel 3 rotates along the first preset direction, the pull rope 4 pulls the first rotating shaft 51 to move in a direction that overcomes the elastic force of the first elastic structure, so that the first rotating shaft 51 drives one end of the roller assembly 5 to move into the arc-shaped groove 12. When the winding wheel 3 rotates along the second preset direction, the pull rope 4 releases the first rotating shaft 51, and the first elastic structure pulls one end of the roller assembly 5 to move into the storage groove 22. The cross-sections of the first body 14 and the second body 26 are both circular. The first body 14 and the support plate 11 can be integrally formed, and the second body 26 and the hook plate 24 can be integrally formed. The winding wheel 3 rotates along a first preset direction, winding up the pull rope 4. The pull rope 4 is under tension, and the tension pulls the first rotating shaft 51, causing the first rotating shaft 51 to rotate against the elastic force of the first elastic structure. When the first rotating shaft 51 rotates to a first preset angle, one end of the roller assembly 5 moves into the arc-shaped groove 12. At this time, one end of the roller assembly 5 can be engaged in the arc-shaped groove 12, thereby enabling the pull rope 4 to drive the roller assembly 5 to rotate out of the storage groove 22, thus securing the panel 2 and the base 1 together. When the winding wheel 3 rotates along a second preset direction, the winding wheel 3 releases the pull rope 4, making the pull rope 4 slack. The pull rope 4 then releases the first rotating shaft 51, and the first elastic structure pulls the first rotating shaft 51 to rotate. When the first rotating shaft 51 rotates to a second preset angle, one end of the roller assembly 5 moves into the storage groove 22, thereby enabling the pull rope 4 to drive the roller assembly 5 back into the storage groove 22, thus separating the panel 2 and the base 1. The first elastic structure can be a torsion spring.

[0032] The inner middle part of the second body 26 may also be provided with a second mounting groove connected to the middle part of the first mounting groove 21, and also includes a threaded shaft 6 and a second elastic structure 62. One end of the second elastic structure 62 is connected to the bottom end of the second mounting groove, and one end of the threaded shaft 6 is screwed to the middle part of the winding wheel 3 and connected to the other end of the second elastic structure 62. When one end of the roller assembly 5 is engaged with the arc groove 12, the top end of the threaded shaft 6 is flush with the top end of the second body 26. When the roller assembly 5 is set in the storage groove 22, the second elastic structure 62 pushes the top end of the threaded shaft 6 to protrude out of the outer side of the second body 26. Pushing the threaded shaft 6 downwards causes it to compress the second elastic structure 62, resulting in the threaded shaft 6 moving downwards. The top of the threaded shaft 6 and the top of the second body 26 remain flush, ensuring that subsequent operations can engage one end of the roller assembly 5 in the arc-shaped groove 12. After the top of the threaded shaft 6 and the top of the second body 26 are flush, the threaded shaft 6 is rotated along a first preset direction. The threaded shaft 6 drives the winding wheel 3 to rotate along the first preset direction. The winding wheel 3 rotates through the threaded shaft 6, winding up the pull rope 4. The pull rope 4 is under tension, and the tension pulls the first rotating shaft 51, causing it to overcome the elasticity of the first elastic structure and rotate. When the first rotating shaft 51 rotates to a first preset angle, one end of the roller assembly 5 moves into the arc-shaped groove 12. At this point, one end of the roller assembly 5 can engage in the arc-shaped groove 12, thus enabling the pull rope 4 to drive the roller assembly 5 out of the storage slot 22, thereby securing the panel 2 and the base 1 together. Rotating the threaded shaft 6 along the second preset direction causes the winding wheel 3 to rotate along the same direction, releasing the pull rope 4. The pull rope 4 then becomes slack, releasing the first rotating shaft 51. The first elastic structure then pulls the first rotating shaft 51 to rotate. When the first rotating shaft 51 rotates to a second preset angle, one end of the roller assembly 5 moves into the storage groove 22. This allows the pull rope 4 to retract the roller assembly 5 into the storage groove 22, thus separating the panel 2 and the base 1. The second elastic structure 62 pushes the top of the threaded shaft 6 to protrude outwards from the second body 26. The second elastic structure 62 can be a spring. The distance that the second elastic structure 62 pushes the threaded shaft 6 to move within the second mounting groove is less than the width of the first mounting groove 21, so that when the threaded shaft 6 finishes moving with its top protruding outward from the second body 26, the top of the winding wheel 3 is located below the top of the first mounting groove 21. The distance that the second elastic structure 62 pushes the threaded shaft 6 to move within the second mounting groove is equal to the width of the first mounting groove 21, so that when the threaded shaft 6 finishes moving with its top protruding outward from the second body 26, the top of the winding wheel 3 abuts against the top of the first mounting groove 21.

[0033] The prefabricated floor in this embodiment may further include a groove 23 disposed on the second body 26 and communicating with the second mounting groove, a fixing groove disposed on the inner side of the second body 26 and communicating with the groove 23, a locking hole 61 provided on the threaded shaft 6, and a locking member 71 slidably connected to the fixing groove, one end of the locking member 71 extending into the groove 23 and engaging with the locking hole 61. When the top of the threaded shaft 6 and the top of the second body 26 are flush, the groove 23 facilitates the user's operation of the threaded shaft 6 within the groove 23, making operation convenient. When the top of the threaded shaft 6 and the top of the second body 26 are flush, the locking member 71 can lock the threaded shaft 6 within the locking hole 61. After the threaded shaft 6 rotates along the first preset direction to a third preset angle, one end of the roller assembly 5 engages with the arc-shaped groove 12, and one end of the locking member 71 extends into the groove 23 and engages with the locking hole 61, thereby fixing the threaded shaft 6 and preventing the rotation of the threaded shaft 6 from affecting the stability of the roller assembly 5 engaging with the arc-shaped groove 12. When it is necessary to separate the base 1 and the panel 2, one end of the locking piece 71 is separated from the locking hole 61, and then the threaded shaft 6 is rotated along the second preset direction. The groove 23 can be two symmetrically arranged about the second mounting groove, the fixing groove can be two symmetrically arranged about the second mounting groove, the locking hole 61 can be two symmetrically arranged about the center line of the threaded shaft 6, and the number of locking pieces 71 can be the same as the number of fixing grooves.

[0034] The prefabricated floor in this embodiment may also include a third elastic structure 72, one end of which is connected to the fixing groove and the other end of the clamp 71. When it is necessary to connect the panel 2 and the base 1, the clamp 71 is pulled away from the threaded shaft 6, thereby compressing the third elastic structure 72, so that one end of the clamp 71 does not abut against the threaded shaft 6, facilitating the rotation of the threaded shaft 6. After the threaded shaft 6 rotates along the first preset direction by a third preset angle, one end of the roller assembly 5 engages with the arc-shaped groove 12, releasing the clamp 71. The third elastic structure 72 extends and pushes the clamp 71 towards the threaded shaft 6, so that one end of the clamp 71 extends into the locking hole 61 on the threaded shaft 6, facilitating the engagement of the clamp 71 with the locking hole 61 and improving the stability of the connection between the clamp 71 and the threaded shaft 6. The third elastic structure 72 can be a spring. Of course, the first elastic structure, the second elastic structure 62, and the third elastic structure 72 can all be components with telescopic properties.

[0035] The locking piece 71 may be provided with a slanted groove. The slanted groove may be set at the top of the locking piece 71, so that the user can manually push the locking piece 71 to unlock the threaded shaft 6. After the threaded shaft 6 is unlocked, the threaded shaft 6 is pulled, which makes the winding wheel 3 rotate and retract the roller assembly 5 into the storage slot 22. When the roller assembly 5 is completely retracted into the storage slot 22, the threaded shaft 6 is pushed upward by the second elastic structure 62 at the bottom of the threaded shaft 6. After the top of the threaded shaft 6 moves to the target position protruding outside the second body 26, it is pulled, which can drive the entire panel 2 to rise and separate from the base 1, making disassembly and assembly convenient.

[0036] The prefabricated floor in this embodiment may further include a flat plate 82 slidably disposed inside the bottom of the first cavity, with the bottom of the second body 26 abutting against the flat plate 82 when it is engaged with the second slot. The flat plate 82 is parallel to the bottom end of the second body 26, and the area of ​​the flat plate 82 is larger than the area of ​​the bottom end of the second body 26. The center line of the flat plate 82 coincides with the center line of the second body 26, which facilitates uniform support for all parts of the second body 26.

[0037] The prefabricated floor in this embodiment may also include an elastic support leg 81 with one end connected to the bottom of the flat plate 82 and the other end connected to the bottom of the first cavity, so as to cushion the second body 26.

[0038] Two symmetrically arranged arc-shaped grooves 12, two symmetrically arranged storage grooves 22, two symmetrically arranged roller assemblies 5, two symmetrically arranged first rotating shafts 51, two symmetrically arranged pull ropes 4, two symmetrically arranged connecting through holes, and two symmetrically arranged first elastic structures. One roller assembly 5 is rotatably connected to the wall of a storage groove 22 via a first rotating shaft 51. One pull rope 4 has one end wound around one end of a rope winding wheel 3, and the other end passes through a connecting through hole and connects to a first rotating shaft 51. Another roller assembly 5 is rotatably connected to the wall of another storage groove 22 via another first rotating shaft 51. One end of another pull rope 4 is wound around one end of a rope winding wheel 3, and the other end passes through another connecting through hole and connects to another first rotating shaft 51. Rotating the threaded shaft 6 along a first preset direction drives the rope winding wheel 3 to rotate along the first preset direction. The rotation of the rope winding wheel 3 is achieved through the transmission of the threaded shaft 6, allowing the rope winding wheel 3 to wind up both pull ropes 4. When under stress, a pull rope 4 pulls a first rotating shaft 51, causing the first rotating shaft 51 to rotate against the elastic force of a first elastic structure. When the first rotating shaft 51 rotates to a first preset angle, one end of a roller assembly 5 moves into an arc-shaped groove 12. At this time, one end of the roller assembly 5 can be engaged in an arc-shaped groove 12. The other pull rope 4 pulls another first rotating shaft 51, causing the other first rotating shaft 51 to rotate against the elastic force of another first elastic structure. When the other first rotating shaft 51 rotates to a first preset angle, one end of another roller assembly 5 moves into another arc-shaped groove 12. At this time, one end of the other roller assembly 5 can be engaged in another arc-shaped groove 12.

[0039] The above-described contents can be implemented individually or in various combinations, and these variations are all within the protection scope of this invention.

[0040] It should be noted that in the description of this application, the terms "upper end," "lower end," and "bottom end," indicating orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Moreover, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise limited, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A type of prefabricated flooring, characterized in that: The system includes a base (1), a panel (2) disposed on the upper end of the base (1), and a floor disposed on the upper end of the panel (2). The base (1) includes a first body (14), a first cavity disposed inside the first body (14), a support plate (11) disposed on the upper end of the first cavity, a first slot (13) disposed between the support plate (11) and the inner wall of the first body (14), and a second slot disposed in the first cavity located inside the support plate (11). The panel (2) includes a second body (26) and a hook plate (24) connected to the top of the second body (26). A hook groove (25) is provided between the hook plate (24) and the second body (26). The second body (26) is engaged in the second groove, the hook plate (24) is engaged in the first groove (13), and the support plate (11) is engaged in the hook groove (25). The height of the top of the support plate (11) is less than the height of the top of the first body (14). The second body (26) remains flush with the top of the first body (14) when it is engaged in the second groove. The first body (14) is provided with an arc-shaped groove (12) located below the support plate (11). The second body (26) is engaged in the hook groove (25). The second body (26) has a storage groove (22) on its side end, a first mounting groove (21) in the middle, and connecting through holes at both ends connected to the first mounting groove (21) and the storage groove (22), and also includes a first elastic structure, a first rotating shaft (51), a rope winding wheel (3), a pull rope (4), a roller assembly (5), and a rope winding wheel (3) set in the first mounting groove (21). The roller assembly (5) is rotatably connected to the groove wall of the storage groove (22) through the first rotating shaft (51). One end of the pull rope (4) is wound around the rope winding wheel (3), and the other end passes through the connecting through hole. The connecting hole is connected to the first rotating shaft (51), and the first elastic structure is disposed on the first rotating shaft (51); when the winding wheel (3) rotates along the first preset direction, the pull rope (4) pulls the first rotating shaft (51) to move in a direction that overcomes the elastic force of the first elastic structure, so that the first rotating shaft (51) drives one end of the roller assembly (5) to move to be engaged in the arc groove (12); when the winding wheel (3) rotates along the second preset direction, the pull rope (4) releases the first rotating shaft (51), and the first elastic structure pulls one end of the roller assembly (5) to move into the storage groove (22).

2. The prefabricated flooring as described in claim 1, characterized in that: The inner middle of the second body (26) is also provided with a second mounting groove connected to the middle of the first mounting groove (21), and also includes a threaded shaft (6) and a second elastic structure (62). One end of the second elastic structure (62) is connected to the bottom end of the second mounting groove, and one end of the threaded shaft (6) is screwed to the middle of the winding wheel (3) and connected to the other end of the second elastic structure (62). When one end of the threaded shaft (6) is engaged in the arc groove (12), the top end of the threaded shaft (6) is flush with the top end of the second body (26). When the second elastic structure (62) is set in the storage groove (22), it pushes the top end of the threaded shaft (6) to protrude out of the outside of the second body (26).

3. The prefabricated flooring as described in claim 2, characterized in that: It also includes a groove (23) provided in the second body (26) and connected to the second mounting groove, and a fixing groove provided in the inner side of the second body (26) and connected to the groove (23). The threaded shaft (6) is provided with a locking hole (61). It also includes a locking member (71) slidably connected to the fixing groove. One end of the locking member (71) extends into the groove (23) and is locked in the locking hole (61).

4. The prefabricated flooring as described in claim 3, characterized in that: It also includes a third elastic structure (72) with one end connected to the fixing groove and the other end connected to the other end of the card (71).

5. A prefabricated floor as described in claim 3, characterized in that: The card (71) is provided with a slanted groove.

6. The prefabricated flooring as described in claim 1, characterized in that: It also includes a flat plate (82) that is slidably disposed on the inner side of the bottom of the first cavity, and the bottom of the second body (26) abuts against the flat plate (82) when it is engaged in the second slot.

7. A prefabricated floor as described in claim 6, characterized in that: It also includes an elastic support (81) with one end connected to the bottom of the plate (82) and the other end connected to the bottom of the first cavity.

8. A prefabricated floor as described in claim 1, characterized in that: The arc-shaped grooves (12) are arranged in two symmetrical positions, the storage grooves (22) are arranged in two symmetrical positions, the roller assemblies (5) are arranged in two symmetrical positions, the first rotating shafts (51) are arranged in two symmetrical positions, the pull ropes (4) are arranged in two symmetrical positions, the connecting through holes are arranged in two symmetrical positions, and the first elastic structures are arranged in two symmetrical positions.

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