Prefabricated composite slab with support structure and its construction method

Abstract

This invention provides a prefabricated composite slab with support structure and its construction method, including a support mechanism positioned below multiple prefabricated slabs. Each prefabricated slab has a support plate at its bottom, extending in a front-to-back direction. Each support plate has a sliding groove at its top that is open both front and back, with the groove opening upwards. An extension support mechanism extends out of the groove to expand the support range of the support plate on the prefabricated slab. The invention also includes a spacing adjustment mechanism and a height adjustment mechanism, allowing for adjustments based on the support spacing and height. This eliminates the need for numerous support rods; simply adjusting the spacing between the crossbar assemblies is sufficient to support the prefabricated slab, simplifying operation. Furthermore, the leveling mechanism allows for adjustment of the support angle of the support plate, improving the support effect.

Description

Technical Field

[0001] This invention relates to the field of composite floor slab technology, specifically to prefabricated composite slab with support structure and its construction method. Background Technology

[0002] Slab strip is an architectural term referring to a strip of cast-in-place slab. The reinforcement varies depending on the location; reinforcing strips and post-cast strips are both types of slab strips. Composite floor slabs are assembled monolithic floor slabs made by combining precast slabs and cast-in-place reinforced concrete layers. Composite floor slabs have good integrity, and the upper and lower surfaces of the slab are flat, facilitating the finishing layer. They are suitable for high-rise buildings and large-span buildings with high requirements for overall rigidity. During construction, the precast slab is first fixed, and then concrete is poured on top of the precast slab to form a cast-in-place slab. After the cast-in-place slab and the precast slab solidify together to form a single slab, it becomes a composite floor slab.

[0003] The typical construction method for prefabricated building composite slabs involves surveyors first measuring and setting out lines, then erecting a support system, hoisting the composite slabs, and finally installing the slabs according to the position of the support system. Currently, the support system for composite slabs requires support rods, which cannot be adjusted according to the orientation of the composite slabs, resulting in poor support effect and a relatively cumbersome operation. Summary of the Invention

[0004] The purpose of this invention is to provide a prefabricated composite slab with support structure and its construction method, aiming to solve the problems of poor support effect and inability to adjust according to the support orientation of the composite slab in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: the prefabricated composite slab with support structure and its construction method, including a support mechanism, which is used to be disposed below multiple prefabricated slabs;

[0006] Each precast slab has a supporting plate at its bottom, which extends in the front-to-back direction. Each supporting plate has a sliding groove that is open in the front and back, with the opening of the sliding groove facing upward. An extension support mechanism is provided inside the sliding groove, which can extend out of the sliding groove to expand the support range of the supporting plate on the precast slab.

[0007] Each supporting plate has a shell underneath, which is an elliptical columnar structure with an upward-facing circular hole at the top.

[0008] The support mechanism includes a leveling mechanism located inside the housing, a rotatable adjusting mechanism located at the lower end of the housing, and a height adjusting mechanism located at the lower end of the adjusting mechanism.

[0009] A support rod extending in the vertical direction is fixedly provided at the lower end of the support plate. The support rod passes through a round hole and is connected to a leveling mechanism. The leveling mechanism is used to adjust the tilt angle of the support plate.

[0010] The distance adjustment mechanism is used to adjust the distance between adjacent housings, and the height adjustment mechanism is used to adjust the height of the housing.

[0011] Preferably, a base is fixedly provided below the height adjustment mechanism. The base is a rectangular plate structure, and multiple telescopic rods are fixedly provided between two adjacent height adjustment mechanisms.

[0012] The height adjustment mechanism includes a lifting device, and adjacent lifting devices are fixedly connected to multiple telescopic rods.

[0013] Preferably, the adjusting mechanism includes multiple sets of cross rod assemblies rotatably disposed between the housing and the lifting device, and single rod assemblies rotatably disposed on the left and right sides of the cross rod assemblies, with each cross rod assembly rotatably provided with a pin;

[0014] The rear end of the rightmost pin is fixed with a movable block, and the movable block has a first lead screw with a threaded connection inside;

[0015] The rightmost lifting device is fixedly equipped with a first driving device at its rear. The output shaft of the first driving device is equipped with a transmission mechanism, and the right end of the first lead screw is connected to the transmission mechanism.

[0016] Preferably, the transmission mechanism includes a lower-stage transmission wheel fixedly mounted on the output shaft of the first drive device and an upper-stage transmission wheel fixedly mounted on the right side of the first lead screw;

[0017] The right side of the lifting device on the far right is fixed with a rectangular plate extending in the left and right direction. Two spring sleeves spaced apart on the left and right are fixed on the front side of the rectangular plate. A short rod is fixed at the front end of the spring sleeve. A tension sprocket is rotatably mounted on the short rod. The lower drive wheel, the upper drive wheel and the tension sprocket are connected by chain drive.

[0018] The first lead screw is equipped with multiple threaded positioning blocks, and the front end of each positioning block is fixedly connected to a pin.

[0019] Preferably, the crossbar assembly includes a front diagonal bar and a rear diagonal bar. Each front diagonal bar and rear diagonal bar has a through-hole at the front and rear. A pin is inserted into the hole. Each front diagonal bar is rotatably connected to the rear diagonal bar of the adjacent group. The upper end connection of each front diagonal bar and the rear diagonal bar of the adjacent group is rotatably connected to the bottom of the housing. The lower end connection of each front diagonal bar and the rear diagonal bar of the adjacent group is rotatably connected to the top of the lifting device.

[0020] The single-bar assembly includes an upper-level diagonal bar and a lower-level diagonal bar, both of which are rotatably connected to the adjacent cross-bar assembly;

[0021] The upper and lower inclined rods are rotatably connected to each other, and both the upper and lower inclined rods are provided with two-stage through holes, one of which is inserted into the interior of the two-stage through hole.

[0022] Preferably, the leveling mechanism includes a left-right adjustment mechanism and a front-back adjustment mechanism. The bottom of the housing is fixedly provided with a left-right adjustment drive device and a front-back adjustment drive device, respectively. The bottom of the housing is fixedly provided with a fixed frame. The fixed frame is rotatably connected to the output shafts of the left-right adjustment drive device and the front-back adjustment drive device, respectively. A support block is fixedly provided on the fixed frame. The support block has rod holes that are open to the left and right.

[0023] The output shaft of the front and rear adjustment drive device is fixedly equipped with a first-stage bevel gear, and a second-stage bevel gear is provided on the rear side of the first-stage bevel gear. The first-stage bevel gear and the second-stage bevel gear mesh with each other. A U-shaped rod is fixedly provided inside the second-stage bevel gear. The U-shaped rod is inserted into the rod hole. A square block is fixedly provided at the end of the U-shaped rod away from the second-stage bevel gear. A rotating hole with front and rear penetration is opened on the square block.

[0024] The output shaft of the left and right adjustment drive device is fixedly equipped with a first bevel gear, a second double-sided bevel gear is provided on the rear side of the first bevel gear, and a third bevel gear is provided on the left side of the second double-sided bevel gear. The third bevel gear and the first bevel gear are both meshed with the second double-sided bevel gear. The third bevel gear is fixedly connected to a support rod, and the support rod is inserted into the rotating hole.

[0025] The interior of the second double-sided bevel gear is rotatably connected to the U-shaped rod.

[0026] Preferably, a third driving device is fixedly installed inside the sliding groove;

[0027] The extended support mechanism includes a transmission gear fixed on the output shaft of the third drive device and two rack rods spaced apart on the left and right. The rack rods extend in the front-to-back direction and slide in the sliding groove. The transmission gear is located between the two rack rods, and the two rack rods mesh with the transmission gear. The transmission gear is used to drive the two rack rods to move in opposite or opposite directions.

[0028] The preferred method is as follows:

[0029] S1. Based on the construction drawings, measure and lay out the construction location to determine the support position of the precast slab;

[0030] S2, Install the prefabricated composite slab with support structure to the support position of the prefabricated slab;

[0031] S3 controls the left and right adjustment drive device. The output shaft of the left and right adjustment drive device drives the second-level bevel gear to rotate through the first-level bevel gear, causing the U-shaped rod to rotate and adjust the front and rear tilt angle of the support plate.

[0032] The front and rear adjustment drive device is controlled. The output shaft of the front and rear adjustment drive device drives the third bevel gear to rotate through the first bevel gear and the second double-sided bevel gear, so that the left and right tilt angle of the support plate can be adjusted.

[0033] Control the third drive device so that the output shaft of the third drive device drives the transmission gear to rotate. When the transmission gear rotates, it drives the two rack rods to move in opposite or opposite directions, and the two rack rods abut against the wall respectively.

[0034] S4, control the lifting device to start, raise it to a certain height, so that the support plate is level with the suspension position of the precast slab;

[0035] S5 controls the third drive unit, causing the output shaft of the third drive unit to drive two rack rods to move in opposite or opposite directions through the transmission gear;

[0036] S6, control the first drive device to drive the first lead screw to rotate. When the first lead screw rotates, it drives the cross rod assembly and the single rod assembly to rotate, so that the distance between adjacent bases is evenly increased.

[0037] S7, using a crane, the precast slab is lifted to the top of the supporting long slab;

[0038] S8, pour concrete for the precast slab.

[0039] The beneficial effects are: 1. By setting up the spacing adjustment mechanism and the height adjustment mechanism, the support spacing and height can be adjusted. In this way, it is not necessary to install a lot of support rods for support. Only the spacing between the cross rod components needs to be adjusted to support the precast slab, which is convenient for operation. In addition, the leveling mechanism can adjust the support angle of the long support plate, which can improve the support effect.

[0040] 2. Control the transmission gears so that the rack rod can move along the sliding groove in opposite or opposite directions. Then the rack rod rests against the wall, which can improve stability and prevent tilting or falling during the support of the precast slab, thus greatly improving the firmness. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the overall rear view in a specific embodiment of the present invention;

[0042] Figure 2 This is a schematic diagram of the transmission structure of the height adjustment mechanism in a specific embodiment of the present invention;

[0043] Figure 3 This is a schematic diagram of the transmission structure of the adjusting mechanism in a specific embodiment of the present invention;

[0044] Figure 4This is a schematic diagram of the precast slab support structure in a specific embodiment of the present invention;

[0045] Figure 5 This is a schematic diagram of the transmission structure of the extension support mechanism in a specific embodiment of the present invention;

[0046] Figure 6 This is a schematic diagram of the transmission structure of the leveling mechanism in a specific embodiment of the present invention;

[0047] Figure 7 This is a specific embodiment of the present invention. Figure 3 A magnified structural diagram at point A.

[0048] In the diagram: 1. Precast slab; 2. Support plate; 3. Shell; 4. Support rod; 5. Base; 6. Multi-section telescopic rod; 7. Lifting device; 9. Cross rod assembly; 901. Front diagonal rod; 902. Rear diagonal rod; 10. Single rod assembly; 1001. Upper diagonal rod; 1002. Lower diagonal rod; 11. Pin; 12. Moving block; 13. First lead screw; 14. Lower transmission wheel; 15. Upper transmission wheel; 16. Positioning connecting block; 17. Left and right adjustment drive device; 18. Front and rear adjustment drive device; 19. First-stage bevel gear; 20. Second-stage bevel gear; 21. U-shaped rod; 22. Square block; 23. First bevel gear; 24. Second double-sided bevel gear; 25. Third bevel gear; 26. Transmission gear; 27. Rack and pinion; 28. Rectangular plate; 29. ​​Spring sleeve; 30. Tensioning sprocket. Detailed Implementation

[0049] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0050] like Figures 1-7 As shown, the prefabricated composite slab with support structure and its construction method can be adjusted according to the support orientation of the prefabricated slab 1 to improve the support effect and is also easy to operate. Specifically, it includes a support mechanism, which is set under multiple prefabricated slabs 1. The support mechanism supports the prefabricated slabs 1 and can provide a good support effect for the prefabricated slabs 1.

[0051] Each precast slab 1 has a supporting plate 2 at its bottom. The supporting plate 2 extends in the front-to-back direction. Each supporting plate 2 has a sliding groove that is open in both the front and back, with the opening of the sliding groove facing upward. An extension support mechanism is provided inside the sliding groove. The extension support mechanism can extend out of the sliding groove and is used to expand the support range of the supporting plate 2 on the precast slab 1. After the height and spacing are adjusted, the extension support mechanism can be adjusted so that it slides along the sliding groove, which can improve the support effect and improve stability.

[0052] Each supporting plate 2 has a shell 3 below it. The shell 3 is an elliptical columnar structure with an upward-facing circular hole on the top.

[0053] The support mechanism includes a leveling mechanism located inside the housing 3, a rotatable distance adjustment mechanism located at the lower end of the housing 3, and a height adjustment mechanism located at the lower end of the distance adjustment mechanism.

[0054] The lower end of the supporting plate 2 is fixedly provided with a support rod 4 extending in the vertical direction. The support rod 4 passes through a round hole and is connected to the leveling mechanism. The leveling mechanism is used to adjust the tilt angle of the supporting plate 2, while the distance adjustment mechanism and the height adjustment mechanism can adjust the height and spacing of the support according to the required support effect, so as to better support the precast slab 1.

[0055] The distance adjustment mechanism is used to adjust the distance between adjacent housings 3, and the height adjustment mechanism is used to adjust the height of housing 3.

[0056] The height can be adjusted according to the installation height of the precast slab 1 so that the supporting plate 2 is located below the precast slab 1. Specifically, a base 5 is fixedly provided below the height adjustment mechanism. The base 5 is a rectangular plate structure. Multiple telescopic rods 6 are fixedly provided between two adjacent height adjustment mechanisms (multiple telescopic rods 6 are multiple telescopic rods that are nested together and can be extended or retracted according to the distance between adjacent lifting devices 7 in order to improve stability).

[0057] The height adjustment mechanism includes a lifting device 7 (the lifting device 7 is a hydraulic telescopic rod that can control the lifting and lowering). Each adjacent lifting device 7 is fixedly connected to a multi-section telescopic rod 6. The lifting device 7 can adjust the height as needed for easy operation.

[0058] The spacing between adjacent precast slabs 1 can be adjusted so that the supporting long plates 2 are evenly distributed below the precast slabs 1. Specifically, the spacing adjustment mechanism includes multiple sets of cross rod assemblies 9 rotatably disposed between the housing 3 and the lifting device 7 and single rod assemblies 10 rotatably disposed on the left and right sides of the cross rod assemblies 9. Each cross rod assembly 9 is rotatably provided with a pin 11.

[0059] The rear end of the rightmost pin 11 is fixedly provided with a movable block 12. The movable block 12 has a threaded hole, which is threadedly connected to the first lead screw 13. The movable block 12 has a threaded first lead screw 13 inside. When the first lead screw 13 rotates, it can drive the movable block 12 to move left and right. When it moves, it can drive the cross rod assembly 9 to rotate. When the cross rod assembly 9 rotates, it can drive the single rod assembly 10 to rotate, so as to adjust the distance between adjacent cross rod assemblies 9 and adjust the support range.

[0060] The rightmost lifting device 7 is fixedly equipped with a first drive device (the first drive device is a self-locking first drive motor) on its rear side. The output shaft of the first drive device is equipped with a transmission mechanism. The right end of the first lead screw 13 is connected to the transmission mechanism to control the start of the first drive device. The output shaft of the first drive device can drive the lower transmission wheel 14 to rotate. When the lower transmission wheel 14 rotates, it can be connected by chain transmission, so it can drive the upper transmission wheel 15 to rotate.

[0061] The transmission mechanism includes a lower transmission wheel 14 fixed on the output shaft of the first drive device and an upper transmission wheel 15 fixed on the right side of the first lead screw 13. When the upper transmission wheel 15 rotates, it can drive the first lead screw 13 to rotate.

[0062] The rightmost lifting device 7 has a rectangular plate 28 extending in the left-right direction fixedly installed on its right side. Two spring sleeves 29 spaced apart are fixedly installed on the front side of the rectangular plate 28 (the spring sleeve 29 consists of a round sleeve, a round sleeve rod and a spring. The inside of the round sleeve is fixedly connected to the spring, and one end of the spring is fixedly connected to the round sleeve rod, so that the round sleeve rod can slide along the round sleeve). A short rod is fixedly installed at the front end of the spring sleeve 29. A tension sprocket 30 is rotatably installed on the short rod. The lower drive wheel 14, the upper drive wheel 15 and the tension sprocket 30 are connected by chain drive. With the setting of the tension sprocket 30, when the cross rod assembly 9 rotates, the tension sprocket 30 will keep the chain taut under the action of the spring sleeve 29 so that it will not come off, and can drive the first lead screw 13 to rotate.

[0063] The first lead screw 13 is provided with multiple threaded positioning connecting blocks 16. The front end of each positioning connecting block 16 is fixedly connected to the pin 11 one by one. The positioning connecting blocks 16 can stabilize the cross rod assembly 9, so that the cross rod assembly 9 will not shift up or down.

[0064] The crossbar assembly 9 includes a front diagonal bar 901 and a rear diagonal bar 902. Each set of front diagonal bars 901 and rear diagonal bars 902 has through holes at the front and rear. Pins 11 are inserted into the holes. Each set of front diagonal bars 901 is rotatably connected to the rear diagonal bars 902 of the adjacent set. The upper ends of each set of front diagonal bars 901 and the rear diagonal bars 902 of the adjacent set are rotatably connected to the bottom of the housing 3. The lower ends of each set of front diagonal bars 901 and the rear diagonal bars 902 of the adjacent set are rotatably connected to the top of the lifting device 7. When the crossbar assembly 9 rotates, it will drive the front diagonal bars 901 and the rear diagonal bars 902 to rotate respectively, forming a cross state, so as to adjust the spacing between adjacent support plates 2.

[0065] The single-bar assembly 10 includes an upper-level diagonal bar 1001 and a lower-level diagonal bar 1002, both of which are rotatably connected to the adjacent cross-bar assembly 9.

[0066] The upper-level inclined rod 1001 and the lower-level inclined rod 1002 are rotatably connected to each other, and both the upper-level inclined rod 1001 and the lower-level inclined rod 1002 are provided with two-stage through holes. One of the pins 11 is inserted into the interior of the two-stage through hole. Similarly, when the single rod assembly 10 rotates, the upper-level inclined rod 1001 and the lower-level inclined rod 1002 rotate to each other, so that the rotation angle can be adjusted to adjust the spacing.

[0067] The tilt angle of the adjacent precast slab 1 can be adjusted so that the supporting long plate 2 is located below the precast slab 1. Specifically, the leveling mechanism includes a left-right adjustment mechanism and a front-back adjustment mechanism. The bottom of the housing 3 is respectively fixed with a left-right adjustment drive device 17 (the left-right adjustment drive device 17 is a self-locking left-right adjustment drive motor) and a front-back adjustment drive device 18 (the front-back adjustment drive device 18 is a self-locking front-back adjustment drive motor). The bottom of the housing 3 is fixed with a fixed frame, which is rotatably connected to the output shafts of the left-right adjustment drive device 17 and the front-back adjustment drive device 18. A support block is fixed on the fixed frame, and the support block has a rod hole that is open to the left and right.

[0068] The output shaft of the front-to-back adjustment drive device 18 is fixedly equipped with a primary bevel gear 19. A secondary bevel gear 20 is provided on the rear side of the primary bevel gear 19. The primary bevel gear 19 and the secondary bevel gear 20 mesh with each other. A U-shaped rod 21 is fixedly provided inside the secondary bevel gear 20. The U-shaped rod 21 is inserted into the rod hole. A square block 22 is fixedly provided at the end of the U-shaped rod 21 away from the secondary bevel gear 20. A rotating hole with front-to-back penetration is opened on the square block 22. When the front-to-back adjustment drive device 18 is started, the output shaft of the front-to-back adjustment drive device 18 drives the primary bevel gear 19 to rotate. Since the primary bevel gear 19 and the secondary bevel gear 20 mesh with each other, they can drive the U-shaped rod 21 to rotate, so that the support rod 4 and the support plate 2 can be adjusted in front-to-back angle.

[0069] The output shaft of the left and right adjustment drive device 17 is fixedly provided with a first bevel gear 23. A second double-sided bevel gear 24 is provided on the rear side of the first bevel gear 23. A third bevel gear 25 is provided on the left side of the second double-sided bevel gear 24. The third bevel gear 25 and the first bevel gear 23 are both meshed with the second double-sided bevel gear 24. The third bevel gear 25 is fixedly connected to the support rod 4, and the support rod 4 is inserted into the rotating hole.

[0070] The interior of the second double-sided bevel gear 24 is rotatably connected to the U-shaped rod 21, which controls the start of the left and right adjustment drive device 17. The output shaft of the left and right adjustment drive device 17 drives the first bevel gear 23 to rotate. Since the third bevel gear 25 and the first bevel gear 23 are both meshed with the second double-sided bevel gear 24, the support rod 4 can be driven to adjust the left and right angles.

[0071] The rack rod 27 can slide along the sliding groove to improve the stability of the supporting long plate 2. Specifically, a third drive device (a self-locking third drive motor) is fixedly installed inside the sliding groove.

[0072] The extended support mechanism includes a transmission gear 26 fixedly mounted on the output shaft of the third drive device and two racks 27 spaced apart. The racks 27 extend in the front-to-back direction and slide in sliding grooves. The transmission gear 26 is located between the two racks 27, and the two racks 27 mesh with the transmission gear 26 respectively. The transmission gear 26 drives the two racks 27 to move in opposite or relative directions, controlling the start of the third drive device. This causes the output shaft of the third drive device to drive the transmission gear 26 to rotate. When the transmission gear 26 rotates, it drives the two racks 27 to move in opposite or relative directions and abut against the wall, improving the stability of the support.

[0073] The specific operation is as follows: S1, according to the construction drawings, measure and lay out the construction position to determine the support position of the precast slab 1;

[0074] S2, Install the prefabricated composite slab with support structure to the support position of the prefabricated slab 1;

[0075] S3, control the left and right adjustment drive device 17. The output shaft of the left and right adjustment drive device 17 drives the second-level bevel gear 20 to rotate through the first-level bevel gear 19, so that the U-shaped rod 21 rotates and adjusts the front and rear tilt angle of the support plate 2.

[0076] The front and rear adjustment drive device 18 is controlled. The output shaft of the front and rear adjustment drive device 18 drives the third bevel gear 25 to rotate through the first bevel gear 23 and the second double-sided bevel gear 24, so that the left and right tilt angle of the support plate 2 can be adjusted.

[0077] Control the third drive device so that the output shaft of the third drive device drives the transmission gear 26 to rotate. When the transmission gear 26 rotates, it drives the two rack rods 27 to move in opposite or opposite directions, and the two rack rods 27 abut against the wall respectively.

[0078] S4, control the lifting device 7 to start, raise it to a certain height, so that the supporting long plate 2 is level with the suspension position of the precast plate 1;

[0079] S5 controls the third drive device, causing the output shaft of the third drive device to drive the two rack rods 27 to move in opposite or opposite directions through the transmission gear 26;

[0080] S6, control the first drive device to drive the first lead screw 13 to rotate. When the first lead screw 13 rotates, it drives the cross rod assembly 9 and the single rod assembly 10 to rotate, so that the distance between adjacent bases 5 is evenly stretched.

[0081] S7, using a crane, the precast slab 1 is lifted to the top of the supporting long slab 2;

[0082] S8, pour concrete into precast slab 1.

[0083] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims and not by the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A prefabricated composite slab structure with support, characterized in that, Includes a support mechanism, which is used to be located below multiple precast slabs (1); Each precast slab (1) has a support plate (2) at its bottom. The support plate (2) extends in the front-to-back direction. Each support plate (2) has a sliding groove that is open in the front and back. The opening of the sliding groove faces upward. An extension support mechanism is provided inside the sliding groove. The extension support mechanism can extend out of the sliding groove. The extension support mechanism is used to expand the support range of the support plate (2) on the precast slab (1). Each supporting plate (2) is provided with a shell (3) below it. The shell (3) is an elliptical columnar structure, and a round hole with an upward opening is provided on the top of the shell (3). The support mechanism includes a leveling mechanism located inside the housing (3), a rotatable distance adjustment mechanism located at the lower end of the housing (3), and a height adjustment mechanism located at the lower end of the distance adjustment mechanism; The lower end of the support plate (2) is fixedly provided with a support rod (4) extending in the vertical direction. The support rod (4) passes through a round hole and is connected to the leveling mechanism. The leveling mechanism is used to adjust the tilt angle of the support plate (2). The distance adjustment mechanism is used to adjust the distance between adjacent housings (3), and the height adjustment mechanism is used to adjust the height of housing (3); The adjusting mechanism includes multiple sets of cross rod assemblies (9) rotatably disposed between the housing (3) and the lifting device (7) and single rod assemblies (10) rotatably disposed on the left and right sides of the cross rod assembly (9). Each cross rod assembly (9) is rotatably provided with a pin (11). The rear end of the rightmost pin (11) is fixedly provided with a moving block (12), and the inside of the moving block (12) is provided with a first lead screw (13) with a threaded connection. The rightmost lifting device (7) is fixedly equipped with a first driving device on its rear side. The output shaft of the first driving device is equipped with a transmission mechanism, and the right end of the first lead screw (13) is connected to the transmission mechanism. The transmission mechanism includes a lower transmission wheel (14) fixed on the output shaft of the first drive device and an upper transmission wheel (15) fixed on the right side of the first lead screw (13). The right side of the lifting device (7) is fixed with a rectangular plate (28) extending in the left and right direction. Two spring sleeves (29) spaced apart are fixed on the front side of the rectangular plate (28). A short rod is fixed at the front end of the spring sleeve (29). A tension sprocket (30) is rotatably mounted on the short rod. The lower drive wheel (14), the upper drive wheel (15) and the tension sprocket (30) are connected by chain drive. The first lead screw (13) is provided with multiple threaded positioning connecting blocks (16), and the front end of each positioning connecting block (16) is fixedly connected to the pin (11) one by one.

2. The prefabricated composite slab with support structure according to claim 1, characterized in that, A base (5) is fixedly provided below the height adjustment mechanism. The base (5) is a rectangular plate structure. Multiple telescopic rods (6) are fixed between two adjacent height adjustment mechanisms. The height adjustment mechanism includes a lifting device (7), and each adjacent lifting device (7) is fixedly connected to a multi-section telescopic rod (6).

3. The prefabricated composite slab with support structure according to claim 1, characterized in that, The crossbar assembly (9) includes a front diagonal bar (901) and a rear diagonal bar (902). Each front diagonal bar (901) and rear diagonal bar (902) has a through-hole at the front and rear. A pin (11) is inserted into the hole. Each front diagonal bar (901) is rotatably connected to the rear diagonal bar (902) of the adjacent group. The upper end connection of each front diagonal bar (901) and the rear diagonal bar (902) of the adjacent group is rotatably connected to the bottom of the housing (3). The lower end connection of each front diagonal bar (901) and the rear diagonal bar (902) of the adjacent group is rotatably connected to the top of the lifting device (7). The single-bar assembly (10) includes an upper-level diagonal bar (1001) and a lower-level diagonal bar (1002), both of which are rotatably connected to the adjacent cross-bar assembly (9); The upper-level inclined rod (1001) and the lower-level inclined rod (1002) are rotatably connected to each other, and both the upper-level inclined rod (1001) and the lower-level inclined rod (1002) are provided with two-stage through holes, one of which is a pin (11) inserted into the interior of the two-stage through hole.

4. The prefabricated composite slab with support structure according to claim 1, characterized in that, The leveling mechanism includes a left-right adjustment mechanism and a front-back adjustment mechanism. The bottom of the housing (3) is fixedly provided with a left-right adjustment drive device (17) and a front-back adjustment drive device (18). The bottom of the housing (3) is fixedly provided with a fixed frame. The fixed frame is rotatably connected to the output shafts of the left-right adjustment drive device (17) and the front-back adjustment drive device (18). A support block is fixedly provided on the fixed frame. A rod hole with left and right through openings is provided on the support block. The output shaft of the front and rear adjustment drive device (18) is fixedly provided with a first-stage bevel gear (19), and a second-stage bevel gear (20) is provided on the rear side of the first-stage bevel gear (19). The first-stage bevel gear (19) and the second-stage bevel gear (20) mesh with each other. A U-shaped rod (21) is fixedly provided inside the second-stage bevel gear (20). The U-shaped rod (21) is inserted into the rod hole. A square block (22) is fixedly provided at the end of the U-shaped rod (21) away from the second-stage bevel gear (20). A rotating hole with front and rear penetration is opened on the square block (22). The output shaft of the left and right adjustment drive device (17) is fixedly provided with a first bevel gear (23), a second double-sided bevel gear (24) is provided on the rear side of the first bevel gear (23), and a third bevel gear (25) is provided on the left side of the second double-sided bevel gear (24). The third bevel gear (25) and the first bevel gear (23) are both meshed with the second double-sided bevel gear (24). The third bevel gear (25) is fixedly connected to the support rod (4), and the support rod (4) is inserted into the rotating hole. The interior of the second double-sided bevel gear (24) is rotatably connected to the U-shaped rod (21).

5. The prefabricated composite slab with support structure according to claim 1, characterized in that, A third drive device is fixedly installed inside the sliding groove; The extended support mechanism includes a transmission gear (26) fixed on the output shaft of the third drive device and two racks (27) spaced apart on the left and right. The racks (27) extend in the front-back direction and slide in the sliding groove. The transmission gear (26) is located between the two racks (27). The two racks (27) mesh with the transmission gear (26) respectively. The transmission gear (26) is used to drive the two racks (27) to move in opposite or opposite directions.

6. The construction method of the prefabricated composite slab with support structure according to any one of claims 1-5, characterized in that, The specific steps are as follows: S1. According to the construction drawings, the construction location is measured and laid out to determine the support position of the precast slab (1); S2, install the prefabricated composite slab with support structure to the support position of the prefabricated slab (1); S3, control the left and right adjustment drive device (17). The output shaft of the left and right adjustment drive device (17) drives the second-level bevel gear (20) to rotate through the first-level bevel gear (19), so that the U-shaped rod (21) rotates and adjusts the front and rear tilt angle of the support plate (2). The front and rear adjustment drive device (18) is controlled. The output shaft of the front and rear adjustment drive device (18) drives the third bevel gear (25) to rotate through the first bevel gear (23) and the second double-sided bevel gear (24), so that the left and right tilt angle of the support plate (2) can be adjusted. Control the third drive device so that the output shaft of the third drive device drives the transmission gear (26) to rotate. When the transmission gear (26) rotates, it drives the two rack rods (27) to move in opposite or opposite directions, and the two rack rods (27) abut against the wall respectively. S4, control the lifting device (7) to start, raise it to a certain height, so that the supporting long plate (2) is level with the suspension position of the precast plate (1); S5 controls the third drive device, causing the output shaft of the third drive device to drive the two rack rods (27) to move in opposite or opposite directions through the transmission gear (26); S6, control the first drive device to drive the first lead screw (13) to rotate. When the first lead screw (13) rotates, it drives the cross rod assembly (9) and the single rod assembly (10) to rotate, so that the distance between adjacent bases (5) is evenly stretched. S7, using a crane, the precast slab (1) is lifted above the supporting long slab (2); S8, concrete is poured into the precast slab (1).

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