Post-cast strip formwork supporting device for constructional engineering and construction method of post-cast strip formwork supporting device

Abstract

The invention relates to the technical field of building construction, and discloses a post-cast strip formwork supporting device for constructional engineering and a construction method thereof.The post-cast strip formwork supporting device for constructional engineering comprises a fixing base, a center supporting plate, side supporting plates, a driving motor, a center supporting transmission mechanism, side supporting linkage mechanisms and hydraulic supporting assemblys.The bottom face of the fixing base is sequentially connected with the driving base and a bottom frame; a driving motor is installed on the top face, the center supporting transmission mechanism and the side supporting linkage mechanism are both in transmission connection with the driving motor and drive the center supporting plate to vertically ascend and descend and drive the side supporting plate to horizontally move and vertically ascend and descend respectively, and the hydraulic supporting assembly and the side supporting linkage mechanism are in linkage to achieve automatic supporting. An integrated structure and mechanical transmission are adopted, steel pipe lap joint is not needed, the construction process is simplified, post-cast strips of different sizes are adapted, supporting is stable and reliable, the labor cost is reduced, and the construction efficiency is greatly improved; the problems that an existing supporting structure depends on steel pipe lap joint, mounting and dismounting are tedious, and construction efficiency is low are solved.

Description

Technical Field

[0001] This invention relates to the field of line construction technology, and in particular to a post-cast strip formwork support device and its construction method for building engineering. Background Technology

[0002] A post-cast strip is a concrete strip left at corresponding locations in the foundation slab, walls, or beams during building construction to prevent harmful cracks that may occur in cast-in-place reinforced concrete structures due to uneven shrinkage or settlement. It is installed according to design or construction specifications. The post-cast strip temporarily divides the structure into several parts. After a certain period of time, following the internal shrinkage of the components, the concrete at this construction joint is poured to connect the structure into a whole. Pouring of the post-cast strip should only be done after the concrete on both sides has reached the required strength and the settlement has stabilized. Often, a supporting structure is required to assist the formwork.

[0003] Existing post-pouring strip support structures are often assembled by overlapping various steel pipe members of different lengths. Although they can support the post-pouring strip formwork, they require a lot of construction time during assembly, installation and disassembly, which increases the difficulty of construction and reduces construction efficiency. Summary of the Invention

[0004] To overcome the above shortcomings, this invention provides a post-cast strip formwork support device and its construction method for building engineering. It eliminates the need for steel pipe overlapping and achieves rapid positioning, support and stabilization through integrated structural design and mechanical transmission, simplifying the construction process and improving construction efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a post-cast strip formwork support device for building engineering, comprising a fixed base, a central support plate, side support plates, and a side support linkage mechanism; a drive seat is fixedly installed on the bottom surface of the fixed base, and a bottom frame is fixedly installed on the bottom surface of the drive seat, forming the bottom load-bearing structure of the device; an installation frame is fixedly installed above the fixed base, and a drive motor is fixedly installed on the installation frame to provide a power source for the device; a central support transmission mechanism is also provided above the fixed base, one end of the central support transmission mechanism is drivenly connected to the drive motor, and the other end of the central support transmission mechanism is fixedly connected to the central support plate, for driving the central support plate to move vertically; retractable seats are provided on both sides of the fixed base, and the retractable seats are connected to the fixed base through the side support linkage mechanism, one end of the side support linkage mechanism is drivenly connected to the drive motor, and the other end of the side support linkage mechanism is fixedly connected to the side support plate, for driving the side support plate to move horizontally and move vertically; a hydraulic support assembly is provided inside the bottom frame, and the hydraulic support assembly is linked with the side support linkage mechanism to achieve stable locking of the entire device.

[0006] Furthermore: the central support transmission mechanism includes a drive gear; the drive gear is fixedly connected to the output end of the drive motor, driven gears are meshed on both sides of the drive gear, a first threaded cylinder is fixedly connected to the top of the driven gear, a first threaded rod is threadedly connected inside the first threaded cylinder, and the top end of the first threaded rod is fixedly connected to the central support plate.

[0007] Furthermore: the side support linkage mechanism includes a horizontal adjustment component and a vertical lifting component;

[0008] The horizontal adjustment assembly includes a timing belt, a rotating rod, a toothed column, and a telescopic plate; the timing belt is connected between the driven gear and the rotating rod via a timing pulley, the toothed column is fixedly connected to the bottom end of the rotating rod, the toothed column is meshed with a toothed plate fixedly connected to the telescopic plate, the telescopic plate movably passes through one side of the fixed seat and is fixedly connected to the retractable seat, and the side support plate is installed above the retractable seat via a vertical lifting assembly;

[0009] The vertical lifting assembly includes a connecting rod, a telescopic rod, and a worm gear. The connecting rod is fixedly connected to the bottom surface of the drive gear and extends into the drive seat. A first bevel gear is fixedly connected to the bottom end of the connecting rod. Second bevel gears are meshed on both sides of the first bevel gear. One end of the telescopic rod is fixedly connected to the second bevel gear. The other end of the telescopic rod extends into the retraction seat and is fixedly connected to the worm gear. A worm wheel is meshed with the worm gear. A second threaded cylinder is fixedly connected to the top surface of the worm wheel. A second threaded rod is threadedly connected to the inside of the second threaded cylinder. The top end of the second threaded rod is fixedly connected to the side support plate.

[0010] Furthermore, the inner wall of the fixed base is provided with a sliding groove, and a slider is fixedly connected to one side of the toothed plate. The slider is embedded in the sliding groove and slides in cooperation with the sliding groove to provide guidance and limit for the horizontal movement of the toothed plate.

[0011] Furthermore: the telescopic rod includes an outer rod and an inner rod. The inner wall of the outer rod is provided with a keyway, and the outer side of the inner rod is fixedly connected with a spline. The spline is embedded in the keyway and slides in cooperation with the keyway to ensure that the telescopic rod can extend and retract horizontally in sync with the retraction seat without affecting the power transmission.

[0012] Furthermore: the hydraulic support assembly includes a hydraulic cylinder and a pressure sensor; the hydraulic cylinder is installed on the inner side of the base frame, and a lifting plate is fixedly connected to the telescopic end of the hydraulic cylinder; a torsion spring is fixedly connected to the bottom of the first bevel gear; the other end of the torsion spring is connected to the pressure sensor; the pressure sensor is linked with the hydraulic cylinder to achieve automatic stabilization of the device after support.

[0013] Furthermore: a fixing plate is fixedly connected inside the fixing base, a second guide rod is fixedly connected to one side of the fixing plate, and the other end of the second guide rod is fixed to the retracting seat to provide guidance for the horizontal movement of the retracting seat; a first guide rod is fixedly connected to the four corners of the bottom surface of the bottom frame, and the bottom end of the first guide rod is fixed to the lifting plate to ensure that the lifting plate rises and falls vertically and smoothly.

[0014] Furthermore: a base is fixedly connected to the bottom of the retraction seat, and casters are installed at the four corners of the bottom surface of the base to facilitate the overall transportation of the device; two fixing rods are fixedly installed on the inner side of the bottom frame, and the hydraulic cylinder is fixedly installed between the two fixing rods to ensure that the hydraulic cylinder is installed stably.

[0015] A method for using a formwork support device for post-cast strips in construction engineering includes the following steps:

[0016] Step S1: Use the casters on the bottom of the base to move the entire device to the designated location for the post-pouring strip construction, and complete the initial positioning;

[0017] Step S2: Turn on the drive motor on the mounting frame. The output of the drive motor drives the drive gear to rotate. When the drive gear rotates, it synchronously drives the connecting rod and the first bevel gear at the bottom to rotate. When the first bevel gear rotates, it pulls the torsion spring at the bottom. The torsion spring transmits the tension to the pressure sensor. The pressure sensor triggers the hydraulic cylinder in the bottom frame to start. The hydraulic cylinder pushes the lifting plate down along the first guide rod until the lifting plate touches the ground, completing the overall support of the device.

[0018] Step S3: The driving gear drives the driven gears on both sides to rotate. The driven gears drive the synchronous belt to rotate through the synchronous pulley. The synchronous belt drives the rotating rod and the toothed column at the bottom to rotate. The toothed column meshes with the toothed plate to drive the toothed plate to extend along the slide groove to both sides of the fixed seat. The toothed plate drives the retractable seat to move synchronously through the telescopic plate until the side support plates on both sides move to the preset support position.

[0019] Step S4: The first bevel gear meshes with the second bevel gear to drive the telescopic rod to rotate. The telescopic rod drives the worm gear to mesh with the worm wheel and rotate. The worm wheel drives the second threaded cylinder to rotate. The second threaded cylinder and the second threaded rod are threaded together, pushing the side support plate to rise along the smooth rod until the side support plate abuts the bottom of both sides of the post-pouring strip template.

[0020] Step S5: When the driven gear rotates, it synchronously drives the first threaded cylinder at the top to rotate. The first threaded cylinder is threadedly engaged with the first threaded rod, pushing the central support plate to rise until the central support plate abuts the bottom center of the post-pouring strip template, forming a coordinated support.

[0021] Step S6: After the post-pouring strip is poured and cured, reverse the drive motor, and the drive gear rotates in the opposite direction. This drives the tooth column to rotate in the opposite direction, causing the retraction seat to retract. The first threaded cylinder and the second threaded cylinder rotate in the opposite direction, causing the center support plate and the side support plate to move down. At the same time, the first bevel gear rotates in the opposite direction, causing the torsion spring to reset. The pressure sensor controls the hydraulic cylinder to drive the lifting plate to reset. Then, the device is transferred to the designated storage location by the moving wheels.

[0022] The present invention has the following beneficial effects:

[0023] 1. In this invention, by adopting an integrated structural design, there is no need for traditional steel pipe overlapping and combination. By using a drive motor as a power source, the position adjustment of the central support plate and the side support plate is synchronously driven, realizing the coordinated support of the post-pouring strip formwork, which greatly simplifies the installation and dismantling process, shortens the construction time, and improves the construction efficiency.

[0024] 2. In this invention, the side support linkage mechanism, through the coordinated cooperation of the horizontal adjustment component and the vertical lifting component, combined with the guide and limiting design of the slider and the slide groove, spline and keyway, not only realizes the flexible extension and retraction of the side support plate in the horizontal direction to adapt to the construction needs of post-pouring strips of different widths, but also ensures the smooth and accurate vertical lifting process. With the synchronous support of the central support plate, it forms an all-round coordinated support structure, which effectively improves the stability and reliability of the support for the post-pouring strip template and avoids template deformation or displacement.

[0025] 3. In this invention, the hydraulic support assembly and the side support linkage mechanism are linked and controlled by a torsion spring and a pressure sensor, which can complete the overall support of the device without additional manual operation, thus greatly reducing the cost of manual intervention. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the post-pouring strip support device in this invention;

[0027] Figure 2 This is a structural diagram showing the position of the toothed plate;

[0028] Figure 3 This is a structural diagram showing the location of the tooth column;

[0029] Figure 4 This is a schematic diagram of the chute structure;

[0030] Figure 5 This is a schematic diagram of the slider's structure;

[0031] Figure 6 This is a structural diagram showing the location of the torsion spring;

[0032] Figure 7 This is a structural diagram showing the position of the worm gear;

[0033] Figure 8This is a cross-sectional view of the telescopic pole.

[0034] Legend:

[0035] 1. Fixed base; 2. Drive base; 3. Base frame; 4. Mounting frame; 5. Telescopic plate; 6. Retractable base; 7. Base; 8. Caster wheel; 9. Fixed rod; 10. Hydraulic cylinder; 11. First guide rod; 12. Lifting plate; 13. Synchronous belt; 14. Smooth rod; 15. Side support plate; 16. Center support plate; 17. Driven gear; 18. First threaded cylinder; 19. First threaded rod; 20. Second guide rod; 21. Telescopic rod; 2101. Outer 2102. Inner rod; 22. Drive gear; 23. Drive motor; 24. Gear plate; 25. Connecting rod; 26. First bevel gear; 27. Second bevel gear; 28. Fixing plate; 29. ​​Gear column; 30. Keyway; 31. Spline; 32. Slider; 33. Slide groove; 34. Torsion spring; 35. Pressure sensor; 36. Worm gear; 37. Worm wheel; 38. Second threaded cylinder; 39. Second threaded rod; 40. Limiting block; 41. Rotating rod. Detailed Implementation

[0036] 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, and 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.

[0037] Example

[0038] Reference Figure 1-8 The present invention provides an embodiment of a formwork support device for post-cast strips in construction engineering, comprising a fixed base 1, a central support plate 16, a side support plate 15, and a side support linkage mechanism; the fixed base 1 adopts a cuboid steel structure to ensure overall load-bearing strength; the drive base 2 is fixed to the bottom surface of the fixed base 1 by welding, and the bottom frame 3 is also welded to the bottom surface of the drive base 2 to form a stable bottom support structure; the mounting frame 4 is fixed to the center position of the top surface of the fixed base 1 by bolts, and the drive motor 23 is a servo motor, which is fixedly installed inside the mounting frame 4 by bolts to ensure stable power output.

[0039] like Figure 1 and Figure 2As shown, in the central support transmission mechanism, the driving gear 22 is fixedly connected to the output end of the drive motor 23 through a coupling. Two driven gears 17 are symmetrically arranged on both sides of the driving gear 22 and mesh with it. The driven gears 17 are fixed to the first threaded cylinder 18 by welding. The inner wall of the first threaded cylinder 18 is machined with internal threads, which are adapted to the external threads of the first threaded rod 19. The top end of the first threaded rod 19 is fixed to the central support plate 16 by bolts. The central support plate 16 is made of steel plate and the top surface is covered with an anti-slip pad layer.

[0040] During operation, after the drive motor 23 starts, it drives the drive gear 22 to rotate synchronously through the coupling. The drive gear 22 drives the driven gears 17 on both sides to rotate in opposite directions through the meshing relationship. The driven gears 17 drive the first threaded cylinder 18 fixed to it to rotate. The first threaded cylinder 18 and the first threaded rod 19 are connected by threads to convert the rotational motion into the vertical linear motion of the first threaded rod 19, which in turn pushes the central support plate 16 to rise and fall to adapt to the template height. The anti-slip pad layer increases the friction of the contact surface to prevent relative sliding between the central support plate 16 and the post-pouring strip template, thus ensuring the stability of the support.

[0041] like Figure 2-5 As shown, in the side support linkage mechanism, the synchronous belt 13 of the horizontal adjustment component is a rubber synchronous belt. The synchronous pulley is connected to the driven gear 17 and the rotating rod 41 by a key. The rotating rod 41 is installed inside the fixed seat 1 by a bearing. The bottom end of the rotating rod 41 is welded and fixed to the tooth column 29. The tooth column 29 is meshed with the tooth plate 24. One end of the tooth plate 24 is welded to the telescopic plate 5. The slider 32 welded and fixed on one side of the tooth plate 24 is in sliding cooperation with the slide groove 33 on the inner wall of the fixed seat 1. The telescopic plate 5 is made of hollow square steel, which moves through the side wall of the fixed seat 1 and is welded to the retractable seat 6.

[0042] During operation, when the driven gear 17 rotates, it drives the synchronous pulley to rotate via a key connection. The synchronous pulley transmits power to the synchronous pulley at the end of the rotating rod 41 via the synchronous belt 13, thereby driving the rotating rod 41 to rotate. The rotating rod 41 drives the bottom toothed column 29 to rotate synchronously. The toothed column 29 and the toothed plate 24 are meshed and driven to move the toothed plate 24 horizontally. The sliding cooperation between the slider 32 and the slide groove 33 provides guidance and limit for the movement of the toothed plate 24, preventing the toothed plate 24 from deviating. The toothed plate 24 drives the telescopic plate 5 to move horizontally along the side wall of the fixed seat 1, thereby pulling the retractable seat 6 to move horizontally synchronously, realizing the horizontal position adjustment of the side support plate 15.

[0043] like Figure 6-8As shown, one end of the connecting rod 25 in the vertical lifting assembly is welded and fixed to the bottom surface of the drive gear 22, and the other end of the connecting rod 25 is welded and fixed to the first bevel gear 26. The first bevel gear 26 meshes with the second bevel gears 27 on both sides. The telescopic rod 21 adopts a telescopic spline drive shaft. The second bevel gear 27 is welded and fixed to the outer rod 2101 of the telescopic rod 21. One end of the inner rod 2102 of the telescopic rod 21 is welded and fixed to the worm gear 36. The spline 31 fixedly connected to the outer side of the inner rod 2102 is embedded in the outer rod 21. 01 A keyway 30 is opened on the inner wall and slides with it; the worm 36 is meshed with the worm wheel 37, the top surface of the worm wheel 37 is welded and fixed to the second threaded cylinder 38, the second threaded cylinder 38 is threaded with the second threaded rod 39, the top end of the second threaded rod 39 is fixed to the side support plate 15 by bolts, the structure of the side support plate 15 is the same as that of the central support plate 16, and the side support plate 15 and the second threaded rod 39 are also symmetrically fixed with a guide rod 14, and the bottom of the guide rod 14 is welded and fixed with a limiting block 40;

[0044] During operation, the drive gear 22 rotates, driving the connecting rod 25 and the bottom first bevel gear 26 to rotate synchronously. The first bevel gear 26 drives the second bevel gears 27 on both sides to rotate through meshing. The second bevel gears 27 drive the outer rod 2101 of the telescopic rod 21 to rotate. The spline 31 and the keyway 30 allow the inner rod 2102 of the telescopic rod 21 to move horizontally with the retraction seat 6, while transmitting the rotational power of the outer rod 2101 to the worm gear 36. The worm gear 36 meshes with the worm wheel 37, driving the second threaded cylinder 38 to rotate. Through the threaded engagement, the rotational motion is converted into the vertical lifting motion of the second threaded rod 39, pushing the side support plate 15 to rise and fall. The smooth rod 14 provides guidance for the lifting and falling of the side support plate 15 to avoid tilting. The limiting block 40 prevents the side support plate 15 from detaching from the second threaded rod 39 due to excessive lifting and falling through mechanical limiting, ensuring structural safety.

[0045] like Figure 1 and Figure 6 As shown, in the hydraulic support assembly, the hydraulic cylinder 10 is a double-acting hydraulic cylinder, which is fixedly installed inside the base frame 3 by the fixing rod 9. The fixing rod 9 is fixedly connected to the base frame 3. The telescopic end of the hydraulic cylinder 10 is fixedly connected to the lifting plate 12. The bottom surface of the lifting plate 12 is provided with anti-slip teeth. The first guide rod 11 is welded and fixed to the four corners of the base frame 3. The other end of the first guide rod 11 is welded and fixed to the lifting plate 12 to ensure that the lifting plate 12 rises and falls vertically. One end of the torsion spring 34 is welded and fixed to the bottom surface of the first bevel gear 26. The other end of the torsion spring 34 is connected to the pressure sensor 35. The pressure sensor 35 is fixed inside the drive seat 2 and is connected to the controller of the hydraulic cylinder 10 through a wire to realize linkage control.

[0046] During operation, the first bevel gear 26 rotates, torsion and tensioning the torsion spring 34. The tension generated by the torsion spring 34 acts on the pressure sensor 35. When the detected value changes, the pressure sensor 35 sends an electrical signal to the hydraulic cylinder 10 controller, activating the hydraulic cylinder 10. The telescopic end of the hydraulic cylinder 10 pushes the lifting plate 12 vertically downward along the first guide rod 11. The first guide rod 11 ensures the smooth lifting and lowering of the lifting plate 12. The anti-slip teeth on the bottom surface of the lifting plate 12 increase the friction with the ground, achieving stable support for the entire device. After the post-pouring strip is poured and cured, the first bevel gear 26 reverses, causing the torsion spring 34 to reset. The pressure sensor 35 sends a reset signal, controlling the hydraulic cylinder 10 to drive the lifting plate 12 to rise again.

[0047] like Figure 1 As shown, the device also includes a second guide rod 20 for guiding. One end of the second guide rod 20 is welded and fixed to the fixing plate 28, and the other end of the second guide rod 20 is welded and fixed to the retracting seat 6. The fixing plate 28 is welded and fixed to the inner wall of the fixing seat 1. The base 7 is welded and fixed to the retracting seat 6, and the moving wheel 8 on the bottom surface of the base 7 is a universal wheel with brake.

[0048] The fixing plate 28 is welded to the inside of the fixing base 1 to provide stable support for the second guide rod 20. The second guide rod 20 is fixed to the retraction seat 6 and plays a guiding and limiting role when the retraction seat 6 moves horizontally, so as to prevent the retraction seat 6 from shifting or shaking when it moves. The base 7 is welded to support the weight of the retraction seat 6 and the side support linkage mechanism. The universal wheels with brakes can realize the flexible transportation of the whole device. After the device is supported, the universal wheels are locked by brakes to prevent the device from moving during the post-pouring strip curing process and ensure construction safety.

[0049] To further illustrate the above embodiments, the present invention also provides a method for using a post-cast strip formwork support device for building engineering. The specific steps for using this device to support post-cast strip formwork are as follows:

[0050] Step S1: The construction personnel push the device and use the moving wheels 8 on the bottom of the base 7 to transfer the entire device to the designated area for the construction of the post-pouring strip; adjust the position of the device so that the center line of the fixed seat 1 is aligned with the center line of the post-pouring strip, and ensure that the central support plate 16 and the two side support plates 15 can accurately cover the support area of ​​the post-pouring strip formwork.

[0051] Step S2: Start the drive motor 23 on the mounting frame 4. The output end of the drive motor 23 drives the drive gear 22 to rotate through the coupling. At the same time as the drive gear 22 rotates, it drives the first bevel gear 26 to rotate synchronously through the connecting rod 25 fixed at the bottom. During the rotation of the first bevel gear 26, the torsion spring 34 fixed at its bottom is synchronously torsion-pushed. The tension generated by the torsion spring 34 acts on the pressure sensor 35. When the detection value of the pressure sensor 35 changes, the pressure sensor 35 immediately sends an electrical signal to the controller of the hydraulic cylinder 10. The controller starts the double-acting hydraulic cylinder 10. Its telescopic end pushes the lifting plate 12 to move vertically down along the first guide rod 11 at the four corners of the bottom frame 3 until the anti-slip teeth on the bottom surface of the lifting plate 12 are tightly against the construction ground. Observe whether the device is stable and does not shake. The hydraulic cylinder 10 remains in the extended state, completing the overall support of the device.

[0052] Step S3: The driving gear 22 meshes with and drives the driven gears 17 on both sides to rotate synchronously in opposite directions. The driven gears 17 drive the coaxial synchronous pulley to rotate through the key connection. The synchronous pulley transmits power to the synchronous pulley at the top of the rotating rod 41 through the synchronous belt 13, driving the rotating rod 41 to rotate around its own axis. The toothed column 29 at the bottom of the rotating rod 41 rotates synchronously with the rotating rod 41. Through meshing with the toothed plate 24, it pushes the toothed plate 24 to move horizontally outward along the sliding groove 33 on the inner wall of the fixed seat 1. The toothed plate 24 drives the telescopic plate 5, which is fixedly connected, to extend outward along the side wall of the fixed seat 1, thereby pushing the retractable seat 6 to move horizontally synchronously until the side support plates 15 on both sides move to the preset support positions on both sides of the post-pouring strip template.

[0053] Step S4: The first bevel gear 26 meshes and drives the second bevel gears 27 on both sides to rotate. The second bevel gears 27 drive the outer rod 2101 of the telescopic rod 21 to rotate. The inner rod 2102 of the telescopic rod 21 engages with the keyway 30 on the inner wall of the outer rod 2101 through the spline 31 on the outer side. While maintaining a fixed horizontal position with the retracting seat 6, it transmits rotational power to the worm gear 36. The worm gear 36 meshes with the worm wheel 37 to drive the second threaded cylinder 38 on the top surface of the worm wheel 37 to rotate. The second threaded cylinder 38 and the second threaded rod 39 are threaded together to convert the rotational motion into the vertical upward motion of the second threaded rod 39, pushing the side support plate 15 to move upward along the smooth rod 14 until the top surface of the side support plate 15 tightly abuts against the bottom of both sides of the post-pouring strip template.

[0054] Step S5: When the driven gear 17 rotates, it synchronously drives the first threaded cylinder 18 welded at the top to rotate. The first threaded cylinder 18 and the first threaded rod 19 inside are connected by threads, driving the first threaded rod 19 to rise vertically, thereby pushing the central support plate 16 to move upward. Observe the rising process of the central support plate 16 until its top surface tightly abuts the bottom center of the post-pouring strip template, forming an all-round cooperative support structure with the side support plates 15 on both sides.

[0055] Step S6: After the post-pouring strip is poured and cured and reaches the strength requirement for removing the support, start the reverse mode of the drive motor 23; the drive gear 22 rotates in the reverse direction, driving the tooth column 29 to rotate in the reverse direction in sequence, pulling the retractable seat 6 towards the fixed seat 1 through the tooth plate 24 and the telescopic plate 5; at the same time, the first threaded cylinder 18 and the second threaded cylinder 38 rotate in the reverse direction, driving the central support plate 16 and the side support plate 15 to move vertically downward to reset; the first bevel gear 26 rotates in the reverse direction to gradually reset the torsion spring 34; when the pressure sensor 35 detects that the tension has dropped to zero, it sends a signal to control the hydraulic cylinder 10 to retract, driving the lifting plate 12 to rise and reset along the first guide rod 11; after all components have been reset, turn off the drive motor 23, push the device to be transported to the designated storage location, cleaned and maintained, and then stored.

[0056] This invention enables rapid support and disassembly of post-pouring strip formwork through an integrated structure and mechanical transmission, eliminating the need for steel pipe overlap, significantly improving construction efficiency, and providing stable support and strong versatility, making it suitable for post-pouring strip construction in various building projects.

Claims

1. A formwork support device for post-cast strips in building construction, characterized in that: The system includes a fixed base (1), a central support plate (16), a side support plate (15), and a side support linkage mechanism. A drive base (2) is fixedly installed on the bottom surface of the fixed base (1), and a bottom frame (3) is fixedly installed on the bottom surface of the drive base (2). An installation frame (4) is fixedly installed on the top of the fixed base (1), and a drive motor (23) is fixedly installed on the installation frame (4). A central support transmission mechanism is also provided on the top of the fixed base (1). One end of the central support transmission mechanism is connected to the drive motor (23), and the other end of the central support transmission mechanism is fixedly connected to the central support plate (16). Retractable seats (6) are provided on both sides of the fixed base (1). The retractable seats (6) are connected to the fixed base (1) through the side support linkage mechanism. One end of the side support linkage mechanism is connected to the drive motor (23), and the other end of the side support linkage mechanism is fixedly connected to the side support plate (15). A hydraulic support assembly is provided inside the bottom frame (3), and the hydraulic support assembly is linked with the side support linkage mechanism.

2. The formwork support device for post-cast strips in building construction according to claim 1, characterized in that: The central support transmission mechanism includes a drive gear (22); the drive gear (22) is fixedly connected to the output end of the drive motor (23), and driven gears (17) are meshed on both sides of the drive gear (22). A first threaded cylinder (18) is fixedly connected to the top of the driven gear (17), and a first threaded rod (19) is threadedly connected inside the first threaded cylinder (18). The top end of the first threaded rod (19) is fixedly connected to the central support plate (16).

3. The formwork support device for post-cast strips in building construction according to claim 2, characterized in that: The side support linkage mechanism includes a horizontal adjustment component and a vertical lifting component; the horizontal adjustment component includes a synchronous belt (13), a rotating rod (41), a toothed column (29), and a telescopic plate (5); the synchronous belt (13) is connected between the driven gear (17) and the rotating rod (41) through a synchronous pulley, the toothed column (29) is fixedly connected to the bottom end of the rotating rod (41), the toothed column (29) is meshed with a toothed plate (24) fixedly connected to the telescopic plate (5), the telescopic plate (5) movably passes through one side of the fixed seat (1) and is fixedly connected to the retractable seat (6), and the side support plate (15) is installed above the retractable seat (6) through the vertical lifting component.

4. The formwork support device for post-cast strips in building construction according to claim 3, characterized in that: The vertical lifting assembly includes a connecting rod (25), a telescopic rod (21), and a worm gear (36). The connecting rod (25) is fixedly connected to the bottom surface of the drive gear (22) and extends into the drive seat (2). The bottom end of the connecting rod (25) is fixedly connected to a first bevel gear (26). The two sides of the first bevel gear (26) are meshed with second bevel gears (27). One end of the telescopic rod (21) is fixedly connected to the second bevel gear (27). The other end of the telescopic rod (21) extends into the retraction seat (6) and is fixedly connected to the worm gear (36). The worm gear (36) is meshed with a worm wheel (37). The top surface of the worm wheel (37) is fixedly connected to a second threaded cylinder (38). The inside of the second threaded cylinder (38) is threadedly connected to a second threaded rod (39). The top end of the second threaded rod (39) is fixedly connected to a side support plate (15).

5. A formwork support device for post-cast strips in building construction according to claim 3, characterized in that: The inner wall of the fixed base (1) is provided with a sliding groove (33), and a slider (32) is fixedly connected to one side of the toothed plate (24). The slider (32) is embedded in the interior of the sliding groove (33) and slides in cooperation with the sliding groove (33).

6. A formwork support device for post-cast strips in building construction according to claim 4, characterized in that: The telescopic rod (21) includes an outer rod (2101) and an inner rod (2102). The inner wall of the outer rod (2101) is provided with a keyway (30). The outer side of the inner rod (2102) is fixedly connected with a spline (31). The spline (31) is embedded in the inside of the keyway (30) and slides in cooperation with the keyway (30).

7. A formwork support device for post-cast strips in building construction according to claim 4, characterized in that: The hydraulic support assembly includes a hydraulic cylinder (10) and a pressure sensor (35); the hydraulic cylinder (10) is installed on the inner side of the bottom frame (3), the telescopic end of the hydraulic cylinder (10) is fixedly connected to a lifting plate (12), the bottom surface of the first bevel gear (26) is fixedly connected to a torsion spring (34), the other end of the torsion spring (34) is connected to the pressure sensor (35), and the pressure sensor (35) is linked with the hydraulic cylinder (10).

8. A formwork support device for post-cast strips in building construction according to claim 7, characterized in that: The fixed base (1) is internally fixedly connected to a fixed plate (28), and a second guide rod (20) is fixedly connected to one side of the fixed plate (28). The other end of the second guide rod (20) is fixed to the retraction seat (6). The bottom of the bottom frame (3) is fixedly connected to four corners of a first guide rod (11), and the bottom end of the first guide rod (11) is fixed to the lifting plate (12).

9. A formwork support device for post-cast strips in building construction according to claim 7, characterized in that: The bottom of the retractable seat (6) is fixedly connected to a base (7), and the four corners of the bottom surface of the base (7) are equipped with movable wheels (8); two fixed rods (9) are fixedly installed on the inner side of the bottom frame (3), and the hydraulic cylinder (10) is fixedly installed between the two fixed rods (9).

10. A method of using a formwork support device for post-cast strips in building construction, characterized in that: Includes the following steps: Step S1: The entire device is transported to the designated location for post-pouring strip construction using the moving wheels (8) on the bottom surface of the base (7) to complete the initial positioning; Step S2: Turn on the drive motor (23) on the mounting frame (4). The output end of the drive motor (23) drives the active gear (22) to rotate, which in turn drives the connecting rod (25) and the first bevel gear (26) at the bottom to rotate. When the first bevel gear (26) rotates, it pulls the torsion spring (34) at the bottom. The torsion spring (34) transmits the tension to the pressure sensor (35). The pressure sensor (35) triggers the hydraulic cylinder (10) in the bottom frame (3) to start. The hydraulic cylinder (10) pushes the lifting plate (12) down along the first guide rod (11) until the lifting plate (12) touches the ground, completing the overall support of the device. Step S3: The driving gear (22) drives the driven gears (17) on both sides to rotate. The driven gears (17) drive the synchronous belt (13) to rotate through the synchronous pulley. The synchronous belt (13) drives the rotating rod (41) and the toothed column (29) at the bottom to rotate. The toothed column (29) meshes with the toothed plate (24) to drive the toothed plate (24) to extend along the slide groove (33) to both sides of the fixed seat (1). The toothed plate (24) drives the retractable seat (6) to move synchronously through the telescopic plate (5) until the side support plates (15) on both sides move to the preset support position. Step S4: The first bevel gear (26) and the second bevel gear (27) mesh and drive the telescopic rod (21) to rotate. The telescopic rod (21) drives the worm (36) and the worm wheel (37) to mesh and rotate. The worm wheel (37) drives the second threaded cylinder (38) to rotate. The second threaded cylinder (38) and the second threaded rod (39) are threaded together, pushing the side support plate (15) to rise along the smooth rod (14) until the side support plate (15) abuts against the bottom of both sides of the post-cast strip template. Step S5: When the driven gear (17) rotates, it synchronously drives the first threaded cylinder (18) at the top to rotate. The first threaded cylinder (18) and the first threaded rod (19) are threaded together, pushing the central support plate (16) to rise until the central support plate (16) abuts the bottom center of the post-pouring strip template, forming a coordinated support. Step S6: After the post-cast strip is poured and cured, reverse drive motor (23) is reversed, drive gear (22) to rotate in the opposite direction, drive gear column (29) to reverse so that retraction seat (6) retracts, first threaded cylinder (18) and second threaded cylinder (38) to reverse so that center support plate (16) and side support plate (15) move down, and at the same time first bevel gear (26) reverses so that torsion spring (34) resets, pressure sensor (35) controls hydraulic cylinder (10) to drive lifting plate (12) to reset, and then transfer the device to the designated storage location by moving wheel (8).

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