Metal hollow mold floor slab structure and construction method thereof

Abstract

The invention belongs to the technical field of hollow floor slabs, and discloses a metal hollow mold floor slab structure and a construction method thereof.The metal hollow mold floor slab structure comprises a hollow floor slab core mold, reinforcing steel bars are arranged at the four corners of the hollow floor slab core mold correspondingly, two hoops are fixedly installed on the outer walls of the four reinforcing steel bars correspondingly, and an L-shaped installation block is arranged at the top of each hoop; the L-shaped mounting blocks are slidably connected with reinforcing steel bars, fixing mechanisms are arranged at the tops of the two corresponding hoops correspondingly, through the design of the fixing mechanisms, self-adaptive fixing of the hollow floor slab core mold is achieved, first trapezoidal blocks and second trapezoidal blocks in the fixing mechanisms can be matched with first cylinders through first kidney-shaped grooves, and therefore the hollow floor slab core mold can be fixed. The position of the fixing mechanism can be adaptively adjusted within a certain range so as to adapt to hollow floor slab core molds of different shapes and sizes, the installation process is simplified, it is guaranteed that the fixing mechanism can be tightly attached to the outer walls of the floor slab core molds, and therefore the stable supporting and fixing effect is provided.

Description

Technical Field

[0001] The invention belongs to the technical field of hollow floor slabs, in particular to a metal hollow formwork floor slab structure and a construction method thereof. Background Art

[0002] Before pouring concrete for hollow slabs in a building, a crucial step is to accurately place the hollow slab core molds in the slab structure. These core molds are designed to reduce the deadweight of the slab, improve thermal insulation and sound insulation, and optimize the overall structural efficiency of the building. However, in the actual construction process, when pouring concrete, the core molds are prone to floating or shifting due to the fluidity and buoyancy of the concrete slurry, which will not only seriously interfere with the normal progress of the project, but also pose a potential threat to the structural strength and safety of the final slab, thereby affecting the quality of the entire project.

[0003] The traditional method of fixing the core formwork of hollow slabs mainly relies on the steel structure for fixing in the up and down directions. This method can effectively limit the vertical movement of the core formwork to a certain extent, ensuring its stability during the concrete pouring process. However, since the hollow slab core formwork used in each construction project may differ in specifications, sizes and even materials, the traditional fixing method often ignores the horizontal restrictions on the core formwork. During the concrete grouting process, the core formwork is prone to slight horizontal movements. If these slight movements are not effectively controlled, they will gradually accumulate into larger position deviations. This position deviation will directly affect the flatness and force uniformity of the floor slab, thereby reducing the overall structural performance and service life of the building. Therefore, it needs to be improved and optimized. Summary of the invention

[0004] In order to solve the problem proposed in the above background technology that the traditional method of fixing the core formwork of hollow floor slabs can effectively control the vertical movement, but ignores the horizontal direction limitation, resulting in the core formwork being prone to slight horizontal movement during the grouting process and accumulating into position deviation, affecting the flatness and force uniformity of the floor slab and reducing the performance of the building, the present invention provides a metal hollow formwork floor slab structure and a construction method thereof.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a metal hollow formwork floor structure, comprising a hollow floor core mold, wherein four corners of the hollow floor core mold are respectively provided with steel bars, and two hoops are respectively fixedly installed on the outer walls of the four steel bars, and each of the hoops is provided with an L-shaped mounting block on the top, wherein the L-shaped mounting block is slidably connected to the steel bar, and the tops of the corresponding two hoops are respectively provided with fixing mechanisms; The fixing mechanism includes a rectangular bin which is snap-fitted onto the top of the corresponding two L-shaped mounting blocks, a notch is provided on the side of the rectangular bin facing the hollow floor core mold, a screw rod is threadedly installed on the outer wall of the rectangular bin, one end of the screw rod extends into the rectangular bin and is fixedly installed with a moving block, the moving block is slidably connected to the rectangular bin, three cylinders 1 are fixedly installed inside the moving block, a trapezoidal block 1 and two trapezoidal blocks 2 are arranged inside the screw rod, waist-shaped grooves 1 are respectively provided on the outer walls of the trapezoidal block 1 and the two trapezoidal blocks 2, the three cylinders 1 respectively penetrate the corresponding waist-shaped grooves 1, trapezoidal blocks 3 are respectively fixedly installed on the outer walls of the two trapezoidal blocks 2, and the two trapezoidal blocks 3 are both in contact with the outer wall of the hollow floor core mold.

[0006] Preferably, the eight groups of fixing mechanisms are grouped into four, with one group on top and the other on the bottom, and the corresponding two groups of fixing mechanisms are directly provided with supporting mechanisms respectively; the supporting mechanisms include two mounting plates one fixedly mounted on the top of the rectangular warehouse and two mounting plates two fixedly mounted on the bottom of the rectangular warehouse, and the supporting mechanisms are located on a support rod between the two mounting plates one and the two mounting plates two.

[0007] Preferably, mounting components are respectively provided at both ends of the support rod, and the mounting components include mounting grooves opened on the outer wall of the end of the support rod, two clamping plates are arranged inside the mounting groove, and the two clamping plates are crossed in an X shape, and a waist-shaped groove 2 is opened on the outer wall of the corresponding clamping plate, and a cylinder 2 is fixedly installed inside the mounting groove, and the cylinder 2 passes through the waist-shaped groove 2.

[0008] Preferably, a clamping block and a pressing block are fixedly mounted on the outer walls of the two clamping plates respectively, the two pressing blocks are trapezoidally designed, and the sides of the two clamping blocks close to each other are elastically connected by a spring.

[0009] Preferably, a plurality of card slots are respectively provided on one side of the two mounting plates 1 and 2 that are close to each other, and the plurality of card slots are designed to be distributed at equal distances, and each of the card blocks is respectively engaged with the corresponding card slot.

[0010] Preferably, two rectangular blocks are fixedly mounted on the bottom of each rectangular bin, and the two rectangular blocks are located on both sides of two mounting plates.

[0011] Preferably, the top and bottom of each L-shaped mounting block are of draw-out design, and the rectangular block is matched with the top of the L-shaped mounting block and is fixedly connected with each other by bolts.

[0012] Preferably, the large surface of each trapezoidal block three contacts the core mold of the hollow floor slab, the side of the two trapezoidal blocks two away from the trapezoidal block three is inclined, and the inclined surfaces of the two trapezoidal blocks two are slidably connected to the inclined surface of the trapezoidal block one.

[0013] Preferably, each of the first mounting plates is convex in design, and each of the second mounting plates is rectangular in design and has an area value smaller than that of the first mounting plate.

[0014] A construction method for a metal hollow formwork floor structure, the specific steps of the construction method comprising: S1. Construction preparation: Material preparation: prepare metal hollow core molds, steel bars, and concrete materials, and ensure that the hollow core molds are inspected and accepted before entering the site; Equipment preparation: prepare woodworking pistol drill, pliers, and steel cage tools for lifting box molds; Personnel organization: organize the labor force, including the reinforcement team, responsible for the box formwork installation and anti-floating point setting process; S2. Formwork installation and reinforcement binding: Bottom formwork installation: Install the formwork according to the construction drawings and pipe layout drawings to ensure that the formwork is flat and tight; Rebar binding: Bind the floor slab bottom iron and rib beam steel bars to ensure that the steel bars are positioned accurately and tied firmly; S3. Installation and fixation of metal hollow core mold: Core mold assembly: If a split metal hollow core mold is used, it needs to be assembled on site or in a nearby open space to ensure that the core mold is firmly assembled and the size is accurate; Core mold installation: Place the metal hollow core molds in the rib beam spaces in sequence according to the pipe layout diagram, ensuring that the core molds are positioned accurately and aligned flatly; Anti-floating treatment: set anti-floating points and use wire to fix the core mold to the template or steel bars to prevent the core mold from floating when pouring concrete; S4. Rebar binding and concealed acceptance: Upper reinforcement binding: After the core formwork is installed, tie the upper reinforcement of the floor slab to ensure that the reinforcement and the rib beam reinforcement are firmly tied; S5. Concrete pouring and curing: Concrete pouring: Use pumping to pour concrete to ensure that the concrete slump is moderate and the concrete is evenly distributed; vibrator rods vibrate along the rib beam position in the pouring direction until the concrete at the bottom of the box form is dense. Compared with the prior art, the present invention has the following beneficial effects: The present invention realizes adaptive fixation of the hollow floor core mold through the design of the fixing mechanism. The trapezoidal block 1 and the trapezoidal block 2 in the fixing mechanism can adaptively adjust their positions within a certain range through the cooperation of the waist-shaped groove 1 and the cylinder 1 to adapt to hollow floor core molds of different shapes and sizes. This not only simplifies the installation process, but also ensures that the fixing mechanism can fit closely to the outer wall of the floor core mold, thereby providing stable support and fixing effects. When the height of the hollow floor core mold is relatively high, another set of fixing mechanisms can be fixed on the outer wall of the steel bar so that the two sets of fixing mechanisms are vertically distributed, thereby further enhancing the stability of the floor in the vertical direction.

[0015] The present invention realizes the rapid installation and disassembly of the support rod by setting the card plate and the card block structure in the installation assembly. The waist-shaped groove 2 on the card plate allows the card plate to move within a certain range, and the setting of the card block and the pressing block enables the user to easily insert or remove the support rod between the mounting plate 1 and the mounting plate 2 by pressing the pressing block, thereby improving the efficiency of installation and disassembly, and also enables the support rod to adjust the angle according to the height difference between the two groups of fixing mechanisms in the vertical direction, thereby ensuring that the support rod can be firmly supported between the two groups of fixing mechanisms. The combination of the convex design of the mounting plate 1 and the rectangular design of the mounting plate 2 also provides a more stable installation foundation for the support rod, effectively preventing the support rod from shaking or falling off during the fixing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 For the present invention Figure 2 A is a schematic diagram of the enlarged structure of the middle part; Figure 3 It is a schematic diagram of the top structure of the fixing mechanism of the present invention; Figure 4 This is a schematic diagram of the top explosion structure of the fixing mechanism of the present invention; Figure 5 It is a schematic diagram of the top cross-sectional structure of the fixing mechanism of the present invention; Figure 6 It is a schematic diagram of the supporting mechanism structure of the present invention; Figure 7 This is a schematic diagram of the card slot structure of the present invention; Figure 8 It is a schematic diagram of the support rod and structure of the present invention; Fig. 9 It is a schematic diagram of the exploded structure of the support rod and the clamping plate of the present invention.

[0017] In the figure: 1. Hollow floor core mold; 2. Rebar; 3. Hoop; 4. L-shaped mounting block; 5. Rectangular bin; 501. Rectangular block; 6. Screw rod; 601. Moving block; 7. Trapezoidal block one; 701. Trapezoidal block two; 702. Trapezoidal block three; 8. Waist-shaped groove one; 801. Cylinder one; 9. Mounting plate one; 91. Slot; 901. Mounting plate two; 10. Support rod; 1001. Mounting groove; 11. Clamp plate; 1101. Clamp block; 1102. Pressing block; 12. Waist-shaped groove two; 13. Cylinder two; 14. Spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figures 1 to 9 As shown, the present invention provides a metal hollow formwork floor structure, including a hollow floor core mold 1, four corners of the hollow floor core mold 1 are respectively provided with steel bars 2, two hoops 3 are respectively fixedly installed on the outer walls of the four steel bars 2, and each hoop 3 is provided with an L-shaped mounting block 4 on the top, the L-shaped mounting block 4 is slidably connected to the steel bars 2, and the tops of the corresponding two hoops 3 are respectively provided with fixing mechanisms; The fixing mechanism includes a rectangular bin 5 which is snap-fitted on the top of the corresponding two L-shaped mounting blocks 4, a notch is provided on the side of the rectangular bin 5 facing the hollow floor core mold 1, a screw rod 6 is threadedly installed on the outer wall of the rectangular bin 5, one end of the screw rod 6 extends into the rectangular bin 5 and is fixedly installed with a moving block 601, the moving block 601 is slidably connected to the rectangular bin 5, three cylinders 801 are fixedly installed inside the moving block 601, a trapezoidal block 7 and two trapezoidal blocks 701 are arranged inside the screw rod 6, waist-shaped grooves 8 are respectively provided on the outer walls of the trapezoidal block 7 and the two trapezoidal blocks 701, the three cylinders 801 respectively penetrate the corresponding waist-shaped grooves 8, trapezoidal blocks 702 are respectively fixedly installed on the outer walls of the two trapezoidal blocks 701, and the two trapezoidal blocks 702 are both in contact with the outer wall of the hollow floor core mold 1.

[0020] The above scheme is adopted: by rotating the screw rod 6, the moving block 601 can be driven to slide in the rectangular bin 5. Since three cylinders 801 are fixed inside the moving block 601, the cylinder 801 will push the trapezoidal block 7 and the two trapezoidal blocks 701 to slide along the waist-shaped groove 8; when the trapezoidal block 3 702 on the trapezoidal block 2 701 is in contact with the outer wall of the hollow floor core mold 1, the screw rod 6 is stopped from rotating, and the trapezoidal block 3 702 plays a role of fixing and supporting; since the trapezoidal block 7 and the two trapezoidal blocks 701 cooperate with the cylinder 801 through the waist-shaped groove 8, they can adaptively adjust their positions within a certain range to adapt to hollow floor core molds 1 of different shapes and sizes; the steel bar 2 is firmly connected to the hollow floor core mold 1 through the fixing mechanism, thereby enhancing the overall stability and bearing capacity of the floor.

[0021] like Figures 7 to 9 As shown, eight groups of fixing mechanisms are grouped in groups of four, and one group is above and the other group is below, and the corresponding two groups of fixing mechanisms are directly provided with supporting mechanisms respectively; the supporting mechanism includes two mounting plates 9 fixedly installed on the top of the rectangular warehouse 5 and two mounting plates 901 fixedly installed on the bottom of the rectangular warehouse 5, the supporting mechanism is located at a support rod 10 between the two mounting plates 9 and the two mounting plates 901, and mounting components are respectively arranged at both ends of the support rod 10, and the mounting components include mounting grooves 1001 opened on the outer walls of the end parts of the support rod 10, two clamping plates 11 are arranged inside the mounting grooves 1001, and the two clamping plates 11 are crossed in an X shape, and a waist-shaped groove 12 is opened on the outer wall of the corresponding clamping plate 11, and a cylinder 13 is fixedly installed inside the mounting groove 1001, and the cylinder 13 passes through the waist-shaped groove 12, and a clamping block 1101 and a pressing block 1102 are respectively fixedly installed on the outer walls of the two clamping plates 11, and the two pressing blocks 1102 are designed in a trapezoidal shape, and the sides of the two clamping blocks 1101 close to each other are elastically connected by a spring 14.

[0022] The above scheme is adopted: by opening a waist-shaped groove 12 on the outer wall of the two card plates 11, and the cylinder 13 fixedly installed inside the mounting groove 1001 passes through the waist-shaped groove 12, allowing the card plate 11 to move within a certain range, and the outer wall of the card plate 11 is respectively fixedly installed with a card block 1101 and a pressing block 1102, wherein the two pressing blocks 1102 are trapezoidal in design and adapted to the card slot 91, and the sides of the two card blocks 1101 close to each other are elastically connected by a spring 14, and when the pressing block 1102 is pressed, the card block 1101 will move inward, so that the support rod 10 can be easily inserted and removed from the mounting plate 1 9 and the mounting plate 2 901, thereby improving the efficiency of installation and disassembly.

[0023] like Figures 7 and 8 As shown, a plurality of card slots 91 are respectively provided on the mutually adjacent sides of the two mounting plates 1 9 and 2 901 . The plurality of card slots 91 are designed to be distributed at equal distances, and each card block 1101 is respectively connected to the corresponding card slot 91 .

[0024] The above solution is adopted: by opening a plurality of equally spaced card slots 91 on the sides of the two mounting plates 1 9 and 2 901 close to each other, which cooperate with the card blocks 1101 to achieve the functions of fixing and connecting.

[0025] like Figures 1 to 3 As shown, two rectangular blocks 501 are fixedly installed at the bottom of each rectangular bin 5, and the two rectangular blocks 501 are located on both sides of the two mounting plates 901. The top and bottom of each L-shaped mounting block 4 are of a draw-out shell design, and the rectangular block 501 is adapted to the top of the L-shaped mounting block 4 and is fixedly connected by bolts.

[0026] The above scheme is adopted: by fixing two rectangular blocks 501 at the bottom of each rectangular bin 5, the two rectangular blocks 501 are located on both sides of the two mounting plates 901, thereby ensuring that the rectangular bin 5 can be stably supported on the L-shaped mounting block 4 during installation. Since the top of the L-shaped mounting block 4 is a draw-out shell design, the rectangular block 501 can be easily inserted and fixed therein, and the rectangular block 501 is fixedly connected to the top of the L-shaped mounting block 4 with bolts, thereby ensuring the stability and firmness of the rectangular bin 5.

[0027] like Figures 5 and 6 As shown, the large surface of each trapezoidal block three 702 contacts the hollow floor core mold 1, the side of the two trapezoidal blocks two 701 away from the trapezoidal block three 702 is inclined, and the inclined surfaces of the two trapezoidal blocks two 701 are slidably connected with the inclined surface of the trapezoidal block one 7.

[0028] The above scheme is adopted: the large surface of the trapezoidal block three 702 is designed to be in direct contact with the hollow floor core mold 1 to ensure a better contact area and fixing effect. The two trapezoidal blocks two 701 are designed to be inclined on the side away from the trapezoidal block three 702. This design allows them to be slidably connected with the inclined surface of the trapezoidal block one 7. When the screw rod 6 is rotated, the moving block 601 drives the trapezoidal block one 7 and the two trapezoidal blocks two 701 to move in the rectangular warehouse 5. Since the inclined surface of the trapezoidal block two 701 is slidably connected with the inclined surface of the trapezoidal block one 7, they can adaptively adjust their position to adapt to the uneven surface of the hollow floor core mold 1 that may exist. As the trapezoidal block one 7 and the two trapezoidal blocks two 701 move, the trapezoidal block three 702 is pushed toward the hollow floor core mold 1, and finally fixation in the horizontal direction is achieved.

[0029] like Figure 1 to Figure 2 As shown, each mounting plate 1 9 is of convex design, and each mounting plate 2 901 is of rectangular design and has an area value smaller than that of the mounting plate 1 9 .

[0030] The above solution is adopted: by combining the convex design of the mounting plate 1 9 with the rectangular design of the mounting plate 2 901, a more stable installation foundation is provided for the support rod 10, which effectively prevents the support rod 10 from shaking or falling off during the fixing process, thereby improving the stability of the entire metal hollow formwork floor.

[0031] A construction method for a metal hollow formwork floor structure, the specific steps of the construction method comprising: S1. Construction preparation: Material preparation: prepare metal hollow core molds, steel bars, and concrete materials, and ensure that the hollow core molds are inspected and accepted before entering the site, including product certificates, factory inspection reports, and on-site appearance inspections; Equipment preparation: prepare woodworking pistol drill, pliers, and steel cage tools for lifting box molds; Personnel organization: organize the labor force, including the reinforcement team, responsible for the box formwork installation and anti-floating point setting process; S2. Formwork installation and reinforcement binding: Bottom formwork installation: Install the formwork according to the construction drawings and pipe layout drawings to ensure that the formwork is flat and tight; Rebar binding: Bind the floor slab bottom iron and rib beam steel bars to ensure that the steel bars are positioned accurately and tied firmly; S3. Installation and fixation of metal hollow core mold: Core mold assembly: If a split metal hollow core mold is used, it needs to be assembled on site or in a nearby open space to ensure that the core mold is firmly assembled and the size is accurate; Core mold installation: Place the metal hollow core molds in the rib beam spaces in sequence according to the pipe layout diagram, ensuring that the core molds are positioned accurately and aligned flatly; Anti-floating treatment: anti-floating points are set up, and the core mold is fixed to the template or steel bar with iron wire to prevent the core mold from floating up during concrete pouring; the number and position of anti-floating points shall be set according to design requirements; S4. Rebar binding and concealed acceptance: Upper reinforcement binding: After the core formwork is installed, tie the upper reinforcement of the floor slab to ensure that the reinforcement and the rib beam reinforcement are firmly tied; Hidden acceptance: After the processes such as steel bar binding and core mold installation are completed, relevant personnel are organized to conduct three inspections and hidden inspection acceptance to ensure that each process meets the design requirements; S5. Concrete pouring and curing: Concrete pouring: Use pumping to pour concrete, ensuring that the concrete slump is moderate and the concrete is evenly distributed; vibrate the ribs in the pouring direction until the concrete at the bottom of the box formwork is dense; Concrete curing: After the concrete is poured, it should be cured as required to ensure that the concrete strength meets the design requirements.

[0032] The working principle and use process of the present invention: The four top corners of the hollow floor core mold 1 are respectively installed with steel bars 2, and the outer walls of the four steel bars 2 are respectively fixed with clamps 3. The tops of the two adjacent clamps 3 are clamped with rectangular bins 5 and fixedly connected by bolts. First, the screw rod 6 is rotated, and the screw rod 6 drives the moving block 601 to move horizontally in the rectangular bin 5, so that the two trapezoidal blocks 3 702 are constantly close to the hollow floor core mold 1. Through the design of the waist groove 8 and the cylinder 801, the outer wall of the hollow floor core mold 1 is The unevenness makes the two trapezoidal blocks 2 701 contact the outer wall of the hollow floor core mold 1 at intervals, so that the trapezoidal block 1 7 and the two trapezoidal blocks 2 701 inside the screw rod 6 moving block 601 are displaced, so that the two trapezoidal blocks 3 702 can contact the outer wall of the hollow floor core mold 1. By designing a fixing mechanism on each outer wall of the hollow floor core mold 1, the hollow floor core mold 1 is fixed in the horizontal direction by a plurality of trapezoidal blocks 3 702 to prevent it from being displaced during the grouting process; If the height of the hollow floor core mold 1 is high, in order to fix the hollow floor core mold 1 more stably, another set of fixing mechanisms can be fixed on the outer wall of the steel bar 2, so that the two sets of fixing mechanisms are distributed vertically. In order to make the fixing mechanisms on both sides more stable when fixed, the support rod 10 can be slid into one side of the two mounting plates 1 9 and the mounting plate 2 901. Since mounting components are respectively provided at both ends of the support rod 10, it is necessary to press the two pressing blocks 1102 at the same time when in use, so that the two clamping blocks 1101 are close to each other to squeeze the spring 14, so that the support rod 10 can enter the middle of the two mounting plates 1 9 and the two mounting plates 2 901. When installing the support rod 10, the angle of the support rod 10 is adjusted according to the height difference between the two sets of fixing mechanisms in the vertical direction. The height difference between the two sets of fixing mechanisms in the vertical direction is less than the length value of the support rod 10. When the height difference is less than the length value of the support rod 10, the support rod 10 is installed in an inclined state and fixed by making the clamping block 1101 be clamped into a suitable clamping groove 91.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal hollow formwork floor structure, comprising a hollow floor core mold (1), wherein four corners of the hollow floor core mold (1) are respectively provided with steel bars (2), two hoops (3) are respectively fixedly installed on the outer walls of the four steel bars (2), and each of the hoops (3) is provided with an L-shaped mounting block (4) at the top, wherein the L-shaped mounting block (4) is slidably connected to the steel bars (2), and characterized in that: The tops of the two corresponding hoops (3) are respectively provided with fixing mechanisms; The fixing mechanism comprises a rectangular bin (5) mounted on the top of two corresponding L-shaped mounting blocks (4), a notch being provided on the side of the rectangular bin (5) facing the hollow floor core mold (1), a screw rod (6) being threadedly mounted on the outer wall of the rectangular bin (5), one end of the screw rod (6) extending into the rectangular bin (5) and fixedly mounted with a moving block (601), the moving block (601) being slidably connected to the rectangular bin (5), and three cylindrical (8 01), a trapezoidal block 1 (7) and two trapezoidal blocks 2 (701) are arranged inside the screw rod (6), and waist-shaped grooves 1 (8) are respectively opened on the outer walls of the trapezoidal block 1 (7) and the two trapezoidal blocks 2 (701), and the three cylinders 1 (801) respectively penetrate the corresponding waist-shaped grooves 1 (8), and trapezoidal blocks 3 (702) are respectively fixedly installed on the outer walls of the two trapezoidal blocks 2 (701), and the two trapezoidal blocks 3 (702) are both in contact with the outer wall of the hollow floor core mold (1).

2. The metal hollow formwork floor structure according to claim 1, characterized in that: The eight groups of fixing mechanisms are arranged in groups of four, with one group being above the other, and the corresponding two groups of fixing mechanisms are directly provided with supporting mechanisms respectively; the supporting mechanisms comprise two mounting plates one (9) fixedly mounted on the top of the rectangular bin (5) and two mounting plates two (901) fixedly mounted on the bottom of the rectangular bin (5), and the supporting mechanisms are located on a supporting rod (10) between the two mounting plates one (9) and the two mounting plates two (901).

3. The metal hollow formwork floor structure according to claim 2, characterized in that: Mounting components are respectively arranged at both ends of the support rod (10), and the mounting components include a mounting groove (1001) provided on the outer wall of the end of the support rod (10), two clamping plates (11) are arranged inside the mounting groove (1001), and the two clamping plates (11) cross to form an X shape, and a second waist-shaped groove (12) is provided on the outer wall of the corresponding clamping plate (11), and a second cylinder (13) is fixedly installed inside the mounting groove (1001), and the second cylinder (13) passes through the second waist-shaped groove (12).

4. The metal hollow formwork floor structure according to claim 3 is characterized in that: A clamping block (1101) and a pressing block (1102) are respectively fixedly mounted on the outer walls of the two clamping plates (11); the two pressing blocks (1102) are designed to be trapezoidal; and the two clamping blocks (1101) are elastically connected at their mutually adjacent sides via a spring (14).

5. The metal hollow formwork floor structure according to claim 4, characterized in that: A plurality of card slots (91) are respectively provided on one side of the two mounting plates 1 (9) and 2 (901) close to each other. The plurality of card slots (91) are designed to be distributed at equal distances, and each card block (1101) is respectively card-engaged with a corresponding card slot (91).

6. The metal hollow formwork floor structure according to claim 4, characterized in that: Two rectangular blocks (501) are fixedly mounted on the bottom of each rectangular bin (5), and the two rectangular blocks (501) are located on both sides of two second mounting plates (901).

7. The metal hollow formwork floor structure according to claim 6, characterized in that: The top and bottom of each L-shaped mounting block (4) are of a draw-out design, and the rectangular block (501) is adapted to the top of the L-shaped mounting block (4) and is fixedly connected via bolts.

8. The metal hollow formwork floor structure according to claim 1, characterized in that: The larger surface of each trapezoidal block three (702) contacts the hollow floor core mold (1), the sides of the two trapezoidal blocks two (701) away from the trapezoidal block three (702) are inclined, and the inclined surfaces of the two trapezoidal blocks two (701) are slidably connected with the inclined surface of the trapezoidal block one (7).

9. The metal hollow formwork floor structure according to claim 2, characterized in that: Each of the mounting plates 1 (9) is of convex design, and each of the mounting plates 2 (901) is of rectangular design and has an area value smaller than that of the mounting plate 1 (9).

10. A construction method for a metal hollow formwork floor structure, applied to the metal hollow formwork floor structure according to any one of claims 1 to 9, characterized in that: The specific steps of the construction method include: S1. Construction preparation: Material preparation: prepare metal hollow core molds, steel bars, and concrete materials, and ensure that the hollow core molds are inspected and accepted before entering the site; Equipment preparation: prepare woodworking pistol drill, pliers, and steel cage tools for lifting box molds; Personnel organization: organize the labor force, including the reinforcement team, responsible for the box formwork installation and anti-floating point setting process; S2. Formwork installation and reinforcement binding: Bottom formwork installation: Install the formwork according to the construction drawings and pipe layout drawings to ensure that the formwork is flat and tight; Rebar binding: Bind the floor slab bottom iron and rib beam steel bars to ensure that the steel bars are positioned accurately and tied firmly; S3. Installation and fixation of metal hollow core mold: Core mold assembly: If a split metal hollow core mold is used, it needs to be assembled on site or in a nearby open space to ensure that the core mold is firmly assembled and the size is accurate; Core mold installation: Place the metal hollow core molds in the rib beam spaces in sequence according to the pipe layout diagram, ensuring that the core molds are positioned accurately and aligned flatly; Anti-floating treatment: set anti-floating points and use wire to fix the core mold to the template or steel bars to prevent the core mold from floating when pouring concrete; S4. Rebar binding and concealed acceptance: Upper reinforcement binding: After the core formwork is installed, tie the upper reinforcement of the floor slab to ensure that the reinforcement and the rib beam reinforcement are firmly tied; S5. Concrete pouring and curing: Concrete pouring: Use pumping method to pour concrete to ensure moderate concrete slump and uniform distribution; vibrator rods vibrate along the rib position in the pouring direction until the concrete at the bottom of the box formwork is dense.

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