Support device and method for casting composite slabs of prefabricated buildings

Abstract

A supporting device for casting composite slabs of prefabricated buildings, comprising a main chassis. The main chassis is composed of two hollow rods, and the two rods are connected by two second cross-links to form a rectangular frame structure. A neutral rod is provided at the center of the top of the main chassis. The neutral rod is a hollow rod, and a telescopic rod section is provided inside the neutral rod. Telescopic chassis are respectively inserted at both ends of the two hollow rods that make up the main chassis, and an end vertical rod is provided at the top of the end of the telescopic chassis far from the main chassis. With the above structure, the present invention can effectively ensure the rapid installation of the support system and achieve the purpose of rapid disassembly of the support system after casting during the construction operation of composite slabs.

Description

Technical Field

[0001] The present invention relates to the technical field of prefabricated building construction, and specifically to a support device and method for casting composite slabs of prefabricated buildings. Background Art

[0002] A composite slab is an assembled monolithic floor slab formed by laminating a precast slab and a cast-in-place reinforced concrete layer. The composite floor slab has good integrity, and the upper and lower surfaces of the slab are flat, which is convenient for the decoration of the finishing layer. It is suitable for high-rise buildings and large-span buildings with relatively high requirements for overall stiffness. The composite floor slab has good integrity and high stiffness, can save formwork, and the upper and lower surfaces of the slab are flat, which is convenient for the decoration of the finishing layer. It is suitable for high-rise buildings and large-span buildings with relatively high requirements for overall stiffness.

[0003] When constructing the composite slab, a steel pipe support structure still needs to be erected as a temporary support for the precast composite slab. On the one hand, the installation and storage of the temporary support are complex operations. Therefore, it is necessary to design a support structure for the composite slab that can achieve rapid support and retraction. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a support device and method for casting composite slabs of prefabricated buildings, which can effectively solve the problems in the prior art. During the construction operation of the composite slab, it can effectively ensure the rapid installation of the support system and achieve the purpose of rapid disassembly of the support system after pouring is completed.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is: a support device for casting composite slabs of prefabricated buildings, including a main bottom frame. The main bottom frame is composed of two hollow rods. The two rods are connected by two second cross links to form a rectangular frame structure. A neutral rod is provided at the center position of the top of the main bottom frame. The neutral rod is a hollow rod, and a telescopic rod section is provided inside the neutral rod. Telescopic bottom frames are respectively inserted at both ends of the two hollow rods that make up the main bottom frame. At the top of the end of the telescopic bottom frame away from the main bottom frame, an end vertical rod is provided;

[0006] The telescopic rod section and the upper end of the end vertical rod are both provided with keel support members;

[0007] On the side walls of the neutral rod facing the two end vertical rods, first chutes are provided. On the side wall of the telescopic rod section located inside the neutral rod, a first ear plate passing through the first chute is provided. On the side wall of each of the two end vertical rods facing the neutral rod, a second ear plate is provided. A connecting pull rod is provided between the first ear plate and the second ear plate on the same side. The two ends of the connecting pull rod are respectively hinged to the first ear plate and the second ear plate.

[0008] In a preferred embodiment, the bottoms of the two neutral rods are connected by a first cross-linking rod. The first cross-linking rod is a hollow rod. A second chute is provided on the top surface of the first cross-linking rod. Two sliders are provided inside the first cross-linking rod. A scissors brace is hinged at the tops of the two sliders. A formwork support plate is provided at the upper end of the scissors brace.

[0009] In a preferred embodiment, rollers are provided at the middle of the bottom surface of the main chassis and at the bottom surface of the telescopic chassis away from the main chassis.

[0010] In a preferred embodiment, a screw hole seat is provided on the side wall of the main chassis. A positioning support leg is inserted through the screw hole seat, and a threaded connection is formed between the positioning support leg and the screw hole seat.

[0011] In a preferred embodiment, a fixed seat is provided on the first cross-linking rod. A horizontal rotating shaft is provided inside the fixed seat. Threaded sections are respectively provided at both ends of the rotating shaft. The two sliders are respectively arranged on the threaded sections at both ends;

[0012] Both ends of the horizontal rotating shaft penetrate into the neutral rods on both sides. A second bevel gear is provided at the end of the horizontal rotating shaft located inside the neutral rod. A threaded rod is inserted through the bottom surface of the telescopic rod section inside the neutral rod. A threaded fit is formed between the threaded rod and the telescopic rod section. The lower end of the threaded rod is vertically positioned by a threaded rod limiting member fixed inside the neutral rod. The threaded rod passes through the threaded rod limiting member. A first bevel gear meshing with the second bevel gear is provided at the lower end of the threaded rod below the threaded rod limiting member.

[0013] In a preferred embodiment, a rotating rod seat is provided on one of the second cross-linking rods. A horizontal rotating rod is inserted through the rotating rod seat. One end of the rotating rod extends into the fixed seat, and a crank is provided at the other end;

[0014] A third bevel gear is provided at one end of the rotating rod extending into the fixed seat. A fourth bevel gear meshing with the third bevel gear is provided at the middle of the horizontal rotating shaft.

[0015] Based on the above support method of the support device for casting the composite slab of the prefabricated building, the following steps are included:

[0016] 1) Measuring and setting out the construction position;

[0017] 2) Moving the device to the setting-out position through the rollers, and positioning the device by adjusting the positioning support legs;

[0018] 3) Manually turning the crank to move the two sliders inside the fixed seat from both sides to the middle;

[0019] 4) During the rotation of the crank, driving the telescopic rod section to move upward through the multi-stage bevel gears;

[0020] 5) After completing the deployment operation of the support device, installing the keels on multiple keel support members on the same side;

[0021] 6) Place the bottom formwork perpendicular to the keels on multiple keels.

[0022] 7) Lift and install the composite slab onto the keels, and ensure that the bottom formwork is located below the gap between adjacent composite slab components.

[0023] 8) Rotate the crank again to ensure that the keels and the bottom formwork effectively support the composite slab.

[0024] In the preferred solution, in step 4), during the process of the multi-stage bevel gear driving the telescopic rod section to move upward, the connecting tie rod expands horizontally and pushes the two side end vertical rods to expand.

[0025] In the preferred solution, a fine-tuning mechanism is added to the upper end of the end vertical rod, and a threaded sleeve structure is used to achieve the height fine-tuning of the keel support at the upper end of the end vertical rod, ensuring that multiple keel supports are at the same horizontal height.

[0026] In the preferred solution, considering that the casting bottom formwork has a certain thickness, a groove can be considered to be opened at the center position of the keel. When installing the bottom formwork, by embedding method, ensure that the top surface of the bottom formwork is flush with the top surface of the keel.

[0027] The support device and method for casting a composite slab in a prefabricated building provided by the present invention, by adopting the above structure and method, have the following beneficial effects:

[0028] (1) The device can be quickly deployed and achieve the purpose of support, effectively reducing the installation time of the support system and improving the installation efficiency of the support system;

[0029] (2) While the device is being deployed, the formwork support structure can be deployed, and the bottom formwork is set in advance, facilitating the subsequent casting construction of the composite slab components. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the drawings and embodiments:

[0031] Figure 1 It is a schematic diagram of the overall structure of the present invention when it is deployed.

[0032] Figure 2 It is a schematic diagram of the overall structure of the present invention when it is retracted.

[0033] Figure 3 It is a schematic diagram of the structure when the keel and the bottom formwork of the present invention are installed.

[0034] Figure 4 It is a schematic diagram of the structure after the composite slab of the present invention is hoisted in place.

[0035] Figure 5 It is a schematic diagram of the transmission structure at the end of the fixed seat of the present invention.

[0036] In the figure: main chassis 1, telescopic chassis 2, end vertical rod 3, middle vertical rod 4, telescopic rod section 5, keel support member 6, first chute 7, first ear plate 8, second ear plate 9, connecting pull rod 10, first cross link 11, fixed seat 12, second chute 13, slider 14, scissors brace 15, formwork support plate 16, roller 17, screw hole seat 18, positioning support foot 19, second cross link 20, rotating rod seat 21, rotating rod 22, crank 23, threaded rod 24, threaded rod limiting member 25, first bevel gear 26, rotating shaft 27, second bevel gear 28, third bevel gear 29, fourth bevel gear 30, keel 31, bottom formwork 32. Detailed implementation

[0037] As Figures 1-5 shown in, a support device for the casting of assembled building composite slabs includes a main chassis 1. The main chassis 1 is composed of two hollow rods, and the two rods are connected by two second cross links 20 to form a rectangular frame structure. A middle vertical rod 4 is provided at the center of the top of the main chassis 1. The middle vertical rod 4 is a hollow rod, and a telescopic rod section 5 is provided inside the middle vertical rod 4. The two ends of the two hollow rods forming the main chassis 1 are respectively inserted with telescopic chassis 2, and a end vertical rod 3 is provided at the top of the end of the telescopic chassis 2 away from the main chassis 1;

[0038] Keel support members 6 are provided at the upper ends of both the telescopic rod section 5 and the end vertical rod 3;

[0039] First chutes 7 are provided on the side walls of the middle vertical rod 4 facing the two end vertical rods 3. First ear plates 8 passing through the first chutes 7 are provided on the side walls of the telescopic rod section 5 located inside the middle vertical rod 4. Second ear plates 9 are provided on the side walls of the two end vertical rods 3 facing the middle vertical rod 4. A connecting pull rod 10 is provided between the first ear plates 8 and the second ear plates 9 on the same side. The two ends of the connecting pull rod 10 are respectively hinged to the first ear plate 8 and the second ear plate 9.

[0040] In a preferred solution, the bottoms of the two middle vertical rods 4 are connected by a first cross link 11. The first cross link 11 is a hollow rod. A second chute 13 is provided on the top surface of the first cross link 11. Two sliders 14 are provided inside the first cross link 11. The tops of the two sliders 14 are hinged with a scissors brace 15. A formwork support plate 16 is provided at the upper end of the scissors brace 15.

[0041] In a preferred solution, rollers 17 are provided in the middle of the bottom surface of the main chassis 1 and at the bottom surface of the end of the telescopic chassis 2 away from the main chassis 1.

[0042] In a preferred solution, a screw hole seat 18 is provided on the side wall of the main chassis 1. A positioning support foot 19 is inserted through the screw hole seat 18, and a threaded connection is formed between the positioning support foot 19 and the screw hole seat 18.

[0043] In a preferred embodiment, a fixed seat 12 is provided on the first horizontal connecting rod 11. A horizontal rotating shaft 27 is provided inside the fixed seat 12. Threaded sections are respectively provided at both ends of the rotating shaft 27, and two sliders 14 are respectively arranged on the threaded sections at both ends;

[0044] Both ends of the horizontal rotating shaft 27 penetrate into the neutral rods 4 on both sides. A second bevel gear 28 is provided at the end of the horizontal rotating shaft 27 located inside the neutral rod 4. A threaded rod 24 is penetrated through the bottom surface of the telescopic rod section 5 inside the neutral rod 4. The threaded rod 24 is in threaded cooperation with the telescopic rod section 5. The lower end of the threaded rod 24 is vertically positioned by a threaded rod limiting member 25 fixed inside the neutral rod 4. The threaded rod 24 passes through the threaded rod limiting member 25, and a first bevel gear 26 meshing with the second bevel gear 28 is provided at the lower end of the threaded rod 24 below the threaded rod limiting member 25.

[0045] In a preferred embodiment, a rotating rod seat 21 is provided on one of the second horizontal connecting rods 20. A horizontal rotating rod 22 is penetrated through the rotating rod seat 21. One end of the rotating rod 22 extends into the fixed seat 12, and a crank 23 is provided at the other end;

[0046] A third bevel gear 29 is provided at one end of the rotating rod 22 extending into the fixed seat 12. A fourth bevel gear 30 meshing with the third bevel gear 29 is provided in the middle of the horizontal rotating shaft 27.

[0047] Embodiment 2:

[0048] On the basis of Embodiment 1, the supporting method of the supporting device for casting the composite slab of the prefabricated building includes the following steps:

[0049] 1) Measuring and setting out the construction position;

[0050] 2) Moving the device to the setting-out position through the rollers 17, and positioning the device by adjusting the positioning feet 19;

[0051] 3) Manually rotating the crank 23 to move the two sliders 14 in the fixed seat 12 from both sides to the middle;

[0052] 4) During the rotation of the crank 23, driving the telescopic rod section � to move upward through the multi-stage bevel gears;

[0053] 5) After completing the unfolding operation of the supporting device, installing the keels 31 on multiple keel supporting members 6 on the same side;

[0054] 6) Placing the bottom formwork 32 perpendicular to the keels 31 on multiple keels 31;

[0055] 7) Hoisting the composite slab onto the keels 31, and ensuring that the bottom formwork 32 is located below the gap between adjacent composite slab components;

[0056] 8) Rotate the crank 23 again to ensure that the keel 31 and the bottom formwork 32 effectively support the composite slab.

[0057] In the preferred solution, in step 4), during the process of the multi-stage bevel gear driving the telescopic rod section 5 to move upward, the connecting tie rod 10 expands horizontally and pushes the two side end vertical rods 3 to expand.

[0058] In the preferred solution, a fine-tuning mechanism is added to the upper end of the end vertical rod 3. The height of the keel support member 6 at the upper end of the end vertical rod 3 is fine-tuned by adopting a threaded sleeve structure to ensure that multiple keel support members 6 are at the same horizontal height.

[0059] In the above embodiment, a fine-tuning mechanism is added to the upper end of the end vertical rod (similar to the adjustment mechanism of the existing support device, and the height of the keel support member at the upper end of the end vertical rod is fine-tuned by adopting a threaded sleeve structure), so as to ensure that multiple keel support members are at the same horizontal height.

[0060] In addition, considering that the casting bottom formwork has a certain thickness (this thickness can also be ignored), a groove can be considered to be opened at the center position of the keel. When installing the bottom formwork, the top surface of the bottom formwork is ensured to be flush with the top surface of the keel by an embedding method.

[0061] After completing the above support and hoisting operations, the construction of the composite slab can be completed through casting construction.

[0062] After the construction is completed, by rotating the crank 23 in the reverse direction, the device can be stored, and the state of the device changes from Figure 1 to Figure 2 state.

Claims

1. A support device for casting composite slabs of prefabricated buildings, comprising a main chassis (1), characterized in that: The described main chassis (1) is composed of two hollow rods. The two rods are connected by two second cross links (20) to form a rectangular frame structure. A neutral rod (4) is provided at the center position on the top of the main chassis (1). The neutral rod (4) is a hollow rod, and a telescopic rod section (5) is provided inside the neutral rod (4). The two ends of the two hollow rods constituting the main chassis (1) are respectively inserted with telescopic chassis (2). At the top of the end of the telescopic chassis (2) far from the main chassis (1), there is an end vertical rod (3). Both the telescopic rod section (5) and the upper end of the end vertical rod (3) are provided with keel supports (6). On the side walls of the neutral rod (4) facing the two side end vertical rods (3), there are first chutes (7). On the side wall of the telescopic rod section (5) located inside the neutral rod (4), there is a first ear plate (8) passing through the first chute (7). On the side wall of the two side end vertical rods (3) facing the neutral rod (4), there are second ear plates (9). A connecting pull rod (10) is provided between the first ear plate (8) and the second ear plate (9) on the same side. The two ends of the connecting pull rod (10) are respectively hinged to the first ear plate (8) and the second ear plate (9). The bottoms of the two neutral rods (4) are connected by a first cross link (11). The first cross link (11) is a hollow rod. There is a second chute (13) on the top surface of the first cross link (11). Two sliders (14) are provided inside the first cross link (11). The tops of the two sliders (14) are hinged with a scissors brace (15). The upper end of the scissors brace (15) is provided with a formwork support plate (16). A fixed seat (12) is provided on the first cross link (11). A horizontal rotating shaft (27) is provided inside the fixed seat (12). Threaded sections are respectively provided at both ends of the rotating shaft (27). The two sliders (14) are respectively arranged on the threaded sections at both ends. Both ends of the horizontal rotating shaft (27) penetrate into the two side neutral rods (4). At the end of the horizontal rotating shaft (27) located inside the neutral rod (4), there is a second bevel gear (28). A threaded rod (24) is penetrated through the bottom surface of the telescopic rod section (5) inside the neutral rod (4). The threaded rod (24) is in threaded cooperation with the telescopic rod section (5). The lower end of the threaded rod (24) is vertically positioned by a threaded rod limiting member (25) fixed inside the neutral rod (4). The threaded rod (24) passes through the threaded rod limiting member (25). A first bevel gear (26) meshing with the second bevel gear (28) is provided at the lower end of the threaded rod (24) below the threaded rod limiting member (25). A rotating rod seat (21) is provided on one of the second cross links (20). A horizontal rotating rod (22) is penetrated through the rotating rod seat (21). One end of the rotating rod (22) extends into the fixed seat (12), and a crank (23) is provided at the other end. A third bevel gear (29) is provided at one end of the rotating rod (22) extending into the fixed seat (12). A fourth bevel gear (30) meshing with the third bevel gear (29) is provided in the middle of the horizontal rotating shaft (27).

2. The supporting device for casting of the composite slab of the prefabricated building according to claim 1, characterized in that: Rollers (17) are provided at the middle of the bottom surface of the main chassis (1) and at the bottom surface of the end of the telescopic chassis (2) far from the main chassis (1).

3. The supporting device for casting of the composite slab of the prefabricated building according to claim 1, wherein: The side wall of the main chassis (1) is provided with a screw hole seat (18), and a positioning support leg (19) is inserted through the screw hole seat (18). A threaded connection is formed between the positioning support leg (19) and the screw hole seat (18).

4. The supporting method of a supporting device for casting composite slabs of prefabricated buildings according to any one of claims 1-3, characterized in that It includes the following steps: 1) Measure and set out the construction position; 2) Move the device to the setting-out position through the rollers (17), and position the device by adjusting the positioning support legs (19); 3) Manually turn the crank (23) to move the two sliders (14) in the fixed seat (12) from both sides to the middle; 4) During the rotation of the crank (23), the telescopic rod section (5) is driven to move upward through a multi-stage bevel gear; 5) After completing the deployment operation of the support device, install the keel (31) on multiple keel support members (6) on the same side; 6) Place the bottom formwork (32) perpendicular to the keel (31) on multiple keels (31); 7) Hoist the laminated slab onto the keel (31), and ensure that the bottom formwork (32) is located below the gap between adjacent laminated slab components; 8) Rotate the crank (23) again to ensure that the keel (31) and the bottom formwork (32) effectively support the laminated slab.

5. The supporting method of a supporting device for the casting of a prefabricated building composite slab according to claim 4, characterized in that: In step 4), during the process of the multi-stage bevel gear driving the telescopic rod section (5) to move upward, the connecting tie rod (10) expands horizontally and pushes the two side-end vertical rods (3) to expand.

6. The supporting method of a supporting device for the casting of a composite slab of a prefabricated building according to claim 5, characterized in that: A fine adjustment mechanism is added to the upper end of the side-end vertical rod (3), and a threaded sleeve structure is used to realize the height fine adjustment of the keel support member (6) at the upper end of the side-end vertical rod (3), ensuring that multiple keel support members (6) are at the same horizontal height.

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