Prefabricated composite floor interlayer concrete structure construction formwork installation system

Abstract

The utility model discloses a prefabricated composite floor inter concrete structure construction hangs mould installation system, including setting in the upper portion of the composite floor and with the upper pull rod of concrete layer, set in the lower pull rod of aluminum alloy formwork lower part, the adjustable connecting rod of connecting upper pull rod and lower pull rod, respectively swing in the both ends of lower pull rod and with adjustable connecting rod connection telescopic jack and be used for driving adjustable connecting rod action drive assembly, after drive assembly adjusts the fastening of adjustable connecting rod, provides additional top tight force and acts on lower pull rod, to drive aluminum alloy formwork closely and be combined in prefabricated composite floor bottom surface, forms the sealed structure of preventing concrete leakage. Its structure is reliable, uses the structure of pulling up and down and tightly adheres to the prefabricated component bottom, replaces the original complex mould frame and props the system, effectively improves the stability and the operation convenience, in addition, through " mechanical preloading + dynamic top tight " synergies, improves the use performance.

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, specifically to a formwork installation system for the construction of precast composite floor slab concrete structures. Background Technology

[0002] Currently, formwork construction for composite slab sections mainly involves directly installing formwork on the cast-in-place portion of the composite floor slab and setting up a support system around the formwork to support it and prevent concrete leakage. However, due to installation accuracy issues, the formwork is prone to displacement during concrete pouring. Furthermore, unavoidable vibrations during construction often cause the surrounding support system to loosen and deform, leading to concrete leakage from the gaps between the formwork and the support system. This necessitates continuous adjustments to the formwork, reinforcement of the support system, and cleaning of leaked concrete during construction, thus reducing the effectiveness of preventing grout leakage and lowering construction efficiency. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a formwork installation system for the construction of precast composite floor slab concrete structures.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a precast composite floor slab concrete structure construction formwork installation system, including an upper pull rod set on the upper part of the composite floor slab and in contact with the concrete layer, a lower pull rod set on the lower part of the aluminum alloy formwork, an adjustable connecting rod connecting the upper pull rod and the lower pull rod, a telescopic top rod movably connected to both ends of the lower pull rod and connected to the adjustable connecting rod, and a drive component for driving the adjustable connecting rod to move. After the drive assembly adjusts and tightens the adjustable connecting rod, it provides additional clamping force to the pull rod to drive the aluminum alloy template to fit tightly against the bottom surface of the precast composite floor slab, forming a sealed structure to prevent concrete leakage.

[0005] Furthermore, the adjustable connecting rod is rotatably connected to the upper pull rod, and the adjustable connecting rod is rotated in conjunction with the lower pull rod to achieve displacement of the lower pull rod along the adjustable connecting rod.

[0006] Furthermore, the adjustable connecting rod is a threaded screw, the top of which is rotatably connected to the upper pull rod via a bearing, and the threaded screw passes through the lower pull rod and engages with a threaded hole inside the lower pull rod.

[0007] Furthermore, the drive assembly includes a housing, a turbine located inside the housing and connected to a threaded screw, a worm gear cooperating with the turbine, and a handle connected to the worm gear and located outside the housing, with the end of the telescopic push rod away from the pull rod disposed on the housing.

[0008] Furthermore, the pull rod and the two telescopic top rods form a triangular structure.

[0009] Furthermore, the telescopic rod is a hydraulic rod or a pneumatic rod.

[0010] This utility model has the following beneficial effects: The precast composite floor slab concrete structure construction formwork installation system provided by this utility model has a reliable structure. It uses an upper pull and lower push structure to firmly attach the formwork to the bottom of the precast component, replacing the original complex formwork support system, improving stability and ease of operation. In addition, through the synergistic effect of "mechanical pre-tightening + dynamic tightening", it fundamentally solves the problems of grout leakage and stability of traditional formwork systems. Specifically, the adjustable connecting rod realizes the initial positioning and rigid fixation of the formwork, forming the first layer of mechanical pre-tightening. The telescopic push rod continuously provides tightening force during construction to offset the loosening caused by vibration, forming the second layer of dynamic compensation tightening, which greatly improves the performance. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 1 The reference numerals in the attached drawings are respectively: 1-composite floor slab, 2-concrete layer, 3-upper tie rod, 4-aluminum alloy formwork, 5-lower tie rod, 6-adjustable connecting rod, 7-telescopic top rod, 8-drive assembly, 80-outer shell, 81-handle. Detailed Implementation

[0012] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0013] like Figure 1 As shown, a formwork installation system for precast composite floor slab concrete structure construction includes an upper tie rod 3, a lower tie rod 5, an adjustable connecting rod 6, a telescopic top rod 7, and a drive assembly 8. The upper tie rod 3 is installed on the upper part of the composite floor slab 1 and connected to the concrete layer 2. As the upper anchor point, it bears the tension transmitted by the formwork system. Through cooperation with the lower tie rod 5, it provides stable support for the formwork and ensures the overall stability.

[0014] The pull rod 5 is set at the bottom of the aluminum alloy formwork 4 to bear the weight of the formwork and concrete, and to evenly transfer the clamping force to the formwork to prevent local deformation. The aluminum alloy formwork 4 is used to provide the mold for concrete pouring, ensuring the shape and dimensional accuracy of the concrete, and it is in direct contact with the concrete layer 2.

[0015] Adjustable connecting rod 6 connects upper pull rod 3 and lower pull rod 5. The adjustable connecting rod 6 drives the displacement of lower pull rod 5, achieving initial positioning and pre-tightening of the aluminum alloy formwork 4, and controlling the initial fit between the aluminum alloy formwork 4 and the composite floor slab 1. Lower pull rod 5 and two telescopic top rods 7 form a triangular structure, effectively resisting lateral forces such as concrete pouring impact, wind load, and vertical vibration. Furthermore, the length of the telescopic top rods can be independently fine-tuned, compensating for formwork subsidence or expansion deformation caused by temperature changes through variations in the triangle's side length. In addition, the triangular structure naturally forms a spatial positioning reference, allowing construction personnel to quickly calibrate the formwork's levelness.

[0016] The telescopic jacking rods 7 are movably connected to both ends of the pull-down rod 5 and to the adjustable connecting rod 6. After the adjustable connecting rod 6 is pre-tightened, it provides additional tightening force, enhances the sealing between the formwork and the floor slab, and prevents grout leakage. Preferably, the telescopic jacking rods 7 are hydraulic rods or pneumatic rods.

[0017] The drive assembly 8 is used to drive the adjustable connecting rod 6 to move. After the drive assembly 8 adjusts and tightens the adjustable connecting rod 6, it provides additional tightening force to the pull rod 5 to drive the aluminum alloy template 4 to fit tightly against the bottom surface of the precast composite floor slab 1, forming a sealed structure to prevent concrete leakage.

[0018] In this embodiment, the adjustable connecting rod 6 is rotatably connected to the upper pull rod 3, and the adjustable connecting rod 6 is also rotatably engaged with the lower pull rod 5, thereby achieving displacement of the lower pull rod 5 along the adjustable connecting rod 6. Specifically, the adjustable connecting rod 6 is a threaded screw, the top end of which is rotatably connected to the upper pull rod 3 via a bearing. The inner ring of the bearing is fixed to the threaded screw, and the outer ring is fixed to the upper pull rod 3. The threaded screw passes through the lower pull rod 5 and engages with a threaded hole inside the lower pull rod 5. The lower pull rod 5 engages with the threaded screw through the threaded hole, converting the rotational motion of the screw into the linear displacement of the lower pull rod 5, achieving precise height adjustment. The rotation of the threaded screw drives the lower pull rod 5 to rise and fall, adjusting the position of the template. The threaded screw and the upper pull rod 3 are engaged with the bearing to achieve low-friction rotation, avoiding torsional stress.

[0019] In this embodiment, the drive assembly 8 includes a housing 80, a turbine located inside the housing 80 and connected to a threaded screw, a worm gear cooperating with the turbine, and a handle 81 connected to the worm gear and located outside the housing 80. The end of the telescopic push rod 7 away from the pull rod 5 is disposed on the housing 80. Rotating the handle 81 drives the worm gear to rotate, which then transmits the driving force to the turbine. The rotation of the turbine drives the threaded screw to rotate together, thereby transmitting the drive of the handle 81 to the threaded screw, which in turn drives the threaded screw to rotate, ultimately achieving the position adjustment of the pull rod 5 on the threaded screw.

[0020] During operation, the upper tie rod 3 is fixed to the upper cast-in-place layer of the composite floor slab 1, either through embedded parts or welding. Subsequently, the upper end of the adjustable connecting rod 6 (such as a threaded rod) is connected to the upper pull rod 3, and the lower end passes through the through hole of the lower pull rod 5. The adjustable connecting rod 6 is rotated by the drive assembly 8, which drives the lower pull rod 5 to rise, so that the aluminum alloy formwork 4 initially fits against the bottom surface of the floor slab. After the adjustable connecting rod 6 is pre-tightened, the telescopic top rods 7 (such as hydraulic top rods) at both ends of the lower pull rod 5 are activated to apply pressure, applying an additional upward tightening force to the lower pull rod 5. The pushing force of the telescopic top rod 7 is transmitted to the aluminum alloy formwork 4 through the lower pull rod 5, compensating for the small gaps caused by vibration or deformation, forming a tight seal. Concrete pouring is completed under the double fastening of the adjustable connecting rod 6 and the telescopic top rod 7, with no risk of grout leakage. After the concrete has solidified, the pressure of the telescopic top rod 7 is released first, and then the adjustable connecting rod 6 is loosened, and the formwork system is removed.

[0021] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A formwork installation system for precast composite floor slab concrete structures, characterized in that, It includes an upper tie rod (3) set on the upper part of the composite floor slab (1) and connected to the concrete layer (2), a lower tie rod (5) set on the lower part of the aluminum alloy formwork (4), an adjustable connecting rod (6) connecting the upper tie rod (3) and the lower tie rod (5), a telescopic top rod (7) movably connected to both ends of the lower tie rod (5) and connected to the adjustable connecting rod (6), and a drive assembly (8) for driving the adjustable connecting rod (6) to move. After the drive assembly (8) adjusts and tightens the adjustable connecting rod (6), it provides additional tightening force to the pull rod (5) to drive the aluminum alloy template (4) to fit tightly against the bottom surface of the precast composite floor slab (1) to form a sealed structure to prevent concrete leakage.

2. The formwork installation system for precast composite floor slab concrete structure construction according to claim 1, characterized in that, The adjustable connecting rod (6) is rotatably connected to the upper pull rod (3), and the adjustable connecting rod (6) is rotated with the lower pull rod (5) to realize the displacement of the lower pull rod (5) along the adjustable connecting rod (6).

3. The formwork installation system for precast composite floor slab concrete structure construction according to claim 2, characterized in that, The adjustable connecting rod (6) is a threaded screw. The top end of the threaded screw is rotatably connected to the upper pull rod (3) through a bearing. The threaded screw passes through the lower pull rod (5) and is threadedly engaged with a threaded hole opened inside the lower pull rod (5).

4. The formwork installation system for precast composite floor slab concrete structure construction according to claim 3, characterized in that, The drive assembly (8) includes a housing (80), a turbine located inside the housing (80) and connected to the threaded screw, a worm gear cooperating with the turbine, and a handle (81) connected to the worm gear and located outside the housing (80). The end of the telescopic push rod (7) away from the pull rod (5) is disposed on the housing (80).

5. The formwork installation system for precast composite floor slab concrete structure construction according to any one of claims 1 to 4, characterized in that, The pull rod (5) and the two telescopic top rods (7) form a triangular structure.

6. The formwork installation system for precast composite floor slab concrete structure construction according to claim 5, characterized in that, The telescopic top rod (7) is a hydraulic rod or a pneumatic rod.

Images