Connecting structure of double-layer floor reserved hole secondary pouring synchronous construction device

Abstract

The utility model discloses a connecting structure of a double-layer floor reserved hole secondary pouring synchronous construction device, which comprises a lower layer floor, an upper layer floor and a synchronous construction steel support device, and the synchronous construction steel support device comprises an overhead base frame, a middle column adjustable positioning base, a middle column force transmission group pipe, a middle column adjustable positioning top support and a template panel, the overhead base frame comprises a column top containing supporting plate and overhead stand columns, the overhead stand columns stand on the periphery of a lower layer hole, the overhead height is larger than the construction height, the middle column force transmission set pipe comprises an upper pipe and a lower pipe which are the same in diameter, and the middle column adjustable positioning base is fixedly connected to the center of the column top containing supporting plate. The middle column adjustable positioning base is inserted into the bottom of the lower pipe for supporting and is adjustable in height, the middle column adjustable positioning jacking is inserted into the top of the upper pipe for supporting and is adjustable in height, and the formwork panel abuts against the bottom of the upper layer hole. The bottom of the device is overhead, and the device is convenient and fast to disassemble and suitable for construction of hole secondary pouring formwork supporting systems such as reserved pay-off holes and pump pipe holes in structural construction.

Description

Technical Field

[0001] This utility model belongs to the field of building construction, and in particular, it relates to a connection structure of a synchronous construction device for secondary pouring of reserved openings in double-layer floor slabs. Background Technology

[0002] In the construction of floor slab structures, openings need to be reserved during construction due to the need for setting out lines and vertical concrete pumping pipes. When these openings are subsequently sealed with secondary pouring, the conventional method is to support the formwork at the bottom of the opening using formwork, main and secondary joists, and single steel pipes. This method is complex and has poor adaptability. In particular, the formwork system for the upper floor slab concrete openings is often supported on the lower floor, which means that the concrete sealing work for the upper and lower floor openings cannot be carried out simultaneously. The construction of the upper floor openings can only begin after the concrete of the lower floor openings has been poured and set. Therefore, the interval between the upper and lower floor slab concrete layers is often too long, and the disassembly and turnover of the formwork system results in significant losses, which seriously affects construction efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a connection structure for a synchronous construction device for secondary pouring of reserved openings in double-layer floor slabs, in order to solve the technical problem that the inter-layer interval between pouring of reserved openings in the concrete of the upper and lower floor slabs is too long and cannot be carried out simultaneously.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A connection structure for a synchronous construction device for secondary pouring of reserved openings in a double-layer floor slab includes a lower floor slab, an upper floor slab, and a synchronous construction steel support device erected between the two. The lower floor slab has a lower-layer opening, and the upper floor slab has an upper-layer opening, with the upper and lower openings facing each other.

[0006] The synchronous construction steel support device, from bottom to top, includes an overhead base frame, an adjustable positioning base for the central column, a force transmission tube assembly for the central column, an adjustable positioning top support for the central column, and a formwork panel.

[0007] The elevated base frame includes a column-top support plate and elevated columns fixedly connected to the four bottom corners of the column-top support plate. The elevated base frame is erected directly above the lower-level opening. The size of the column-top support plate is larger than the size of the lower-level opening. The elevated columns stand around the lower-level opening, and the height of the elevated columns is greater than the construction height.

[0008] The central column force transmission assembly consists of an upper pipe and a lower pipe of the same diameter. The bottom of the upper pipe and the top of the lower pipe are connected as one unit by an inter-pipe sleeve.

[0009] The adjustable positioning base of the central column is fixedly connected to the center of the top support plate of the column. The adjustable positioning base of the central column is inserted into the bottom of the lower tube for support and its height is adjustable. The adjustable positioning top support of the central column is inserted into the top of the upper tube and its height is adjustable. The top surface of the adjustable positioning top support of the central column is fixedly connected to the center of the bottom surface of the template panel.

[0010] The template panel is pressed tightly against the bottom surface of the upper floor slab and seals the bottom of the upper opening.

[0011] The adjustable positioning base of the central column includes a lower screw, an adjusting support plate, and a base stiffening plate. The bottom of the lower screw is fixedly connected to the center of the top surface of the column top storage tray. The upper half of the lower screw is inserted into the lower tube from the bottom. The center of the adjusting support plate has an internal thread that matches the lower screw. The adjusting support plate is threadedly connected to the lower screw, and the bottom surface of the lower tube rests on the top surface of the adjusting support plate. The base stiffening plate is fixedly connected between the bottom side wall of the lower screw and the top surface of the column top storage tray.

[0012] The base stiffening plate has four pieces around the lower screw, all of which are right-angled triangular plates. The adjusting support plate is spindle-shaped, and the central dimension is larger than the outer diameter of the lower tube.

[0013] The adjustable positioning top support for the central column includes an upper screw, an adjusting lower pressure plate, and a top support stiffening plate. The bottom of the upper screw is fixedly connected to the center of the column top placement plate. The lower half of the lower screw is inserted into the upper tube from the top of the upper tube. The center of the adjusting lower pressure plate has an internal thread that matches the upper screw. The adjusting lower pressure plate is threadedly connected to the upper screw, and the bottom surface of the upper tube rests against the bottom surface of the adjusting lower pressure plate. The top surface of the upper screw is fixedly connected to the center of the bottom surface of the template panel. The top support stiffening plate is fixedly connected between the top side wall of the upper screw and the bottom surface of the template panel.

[0014] The top support stiffening plate has four pieces around the upper screw, all of which are right-angled triangular plates. The adjusting lower pressure plate is spindle-shaped, and the central dimension is larger than the outer diameter of the upper tube.

[0015] The template panel is made of thick steel plate with a thickness of not less than 3mm.

[0016] The upper and lower pipes have the same diameter. The inner diameter of the inter-pipe sleeve is adapted to the outer diameter of either the upper or lower pipe. The inter-pipe sleeve is equipped with a horizontal solid force transmission plate. The bottom of the upper pipe rests on the top surface of the solid force transmission plate, and the top of the lower pipe rests on the bottom surface of the solid force transmission plate.

[0017] The overhead columns are made of steel pipes, and anti-slip pads are installed between the overhead columns and the top surface of the lower floor slab.

[0018] Compared with the prior art, this utility model has the following features and beneficial effects:

[0019] This utility model adopts an elevated treatment of the overhead base frame of the synchronous construction steel support device, so that there is a construction height between it and the lower floor slab, which facilitates the construction of the lower opening and effectively avoids the problems of excessively long inter-layer intervals and the inability to carry out concrete sealing construction of the upper and lower openings at the same time. The construction of the upper opening does not need to wait for the concrete pouring of the lower opening to set, effectively ensuring that the upper and lower layers can be carried out at the same time, which can effectively speed up the construction progress.

[0020] This invention requires no additional devices for construction. For openings at different structural heights, when the height difference is significant, only the upper pipe needs to be disassembled and replaced with the appropriate length. When the height difference is small, the included adjustable positioning base and top support for the central column can be used for reasonable adjustment, making it highly adaptable and usable. Especially when used on the same floor at different heights, its height is adjustable and easy to disassemble, eliminating the need for wooden blocks or formwork for support. It also offers strong stability, making this invention suitable for sealing openings at different floor heights.

[0021] The top surface of this utility model uses a 3mm thick steel plate as the bottom formwork for the concrete at the upper opening, which ensures the quality of the concrete pouring.

[0022] This utility model has the advantages of high strength, high rigidity and good stability, which can ensure safety during construction. Moreover, all components of the device can be recycled and reused, resulting in low material loss. No fastening accessories are required during use, construction is noiseless, disassembly is convenient and quick, turnover efficiency is high, and energy-saving and environmental protection requirements are met.

[0023] This utility model is applicable to the construction of secondary pouring formwork support systems for pre-reserved layout holes, pump pipe holes, and other openings in structural construction. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0026] Figure 2 yes Figure 1 A schematic diagram of the structure of the elevated base frame and the adjustable positioning base of the central column in a top-down cross-section.

[0027] Figure 3 yes Figure 1 A schematic diagram of the adjustable positioning top support for the central column.

[0028] Figure 4 yes Figure 1 A schematic diagram of the structure of the elevated base frame and the adjustable positioning base of the central column, viewed from the top of section AA.

[0029] Figure 5 yes Figure 1 A schematic diagram of the adjustable positioning top support of the central column and the template panel in the bottom view of the BB section.

[0030] Attached diagram labels: 1 - Lower floor slab, 11 - Lower opening, 2 - Upper floor slab, 21 - Upper opening, 3 - Elevated base frame, 31 - Column top support plate, 32 - Elevated column, 4 - Adjustable positioning base for middle column, 41 - Lower screw, 42 - Adjustable support plate, 43 - Base stiffening plate, 5 - Middle column force transmission pipe assembly, 51 - Upper pipe, 52 - Lower pipe, 53 - Pipe sleeve, 54 - Solid force transmission plate, 6 - Adjustable positioning top support for middle column, 61 - Upper screw, 62 - Adjustable lower pressure plate, 63 - Top support stiffening plate, 7 - Template panel, 8 - Anti-slip pad. Detailed Implementation

[0031] See the examples. Figure 1-5 As shown, a connection structure for a synchronous construction device for secondary pouring of reserved openings in a double-layer floor slab includes a lower floor slab 1, an upper floor slab 2, and a synchronous construction steel support device supported between the two. The lower floor slab 1 has a lower opening 11, and the upper floor slab 2 has an upper opening 21. The upper opening 21 and the lower opening 11 are positioned opposite each other.

[0032] The synchronous construction steel support device, from bottom to top, includes an overhead base frame 3, an adjustable positioning base for the central column 4, a force transmission pipe assembly for the central column 5, an adjustable positioning top support for the central column 6, and a formwork panel 7.

[0033] The elevated base frame 3 includes a column top support plate 31 and elevated columns 32 fixedly connected to the four bottom corners of the column top support plate 31. The elevated base frame 3 is supported directly above the lower opening 11. The size of the column top support plate 31 is larger than the size of the lower opening 11. The elevated columns 32 are erected around the lower opening 11. The height of the elevated columns 32 is greater than the construction height.

[0034] The central column force transmission tube 5 includes an upper tube 51 and a lower tube 52 of the same diameter. The bottom of the upper tube 51 and the top of the lower tube 52 are connected as one piece by a tube sleeve 53. The upper tube 51 and the lower tube 52 have the same diameter. The inner diameter of the tube sleeve 53 is adapted to the outer diameter of the upper tube 51 or the outer diameter of the lower tube 52. The tube sleeve 53 is provided with a horizontal solid force transmission plate 54. The bottom of the upper tube 51 rests on the top surface of the solid force transmission plate 54, and the top of the lower tube 52 rests on the bottom surface of the solid force transmission plate 54.

[0035] The overhead column 32 is made of steel pipe, and an anti-slip pad 8 is provided between the overhead column 32 and the top surface of the lower floor slab 1 to ensure load-bearing capacity. In this embodiment, the overhead column 32 is 500mm long and uses a steel pipe with a diameter of 48.3mm and a wall thickness of 3.6mm, which is generally a scaffolding steel pipe.

[0036] The adjustable positioning base 4 of the middle column is fixedly connected to the center of the top support plate 31 of the column. The adjustable positioning base 4 of the middle column is inserted into the bottom of the lower tube 52 for support and its height is adjustable. The adjustable positioning top support 6 of the middle column is inserted into the top of the upper tube 51 and its height is adjustable. The top surface of the adjustable positioning top support 6 of the middle column is fixedly connected to the center of the bottom surface of the template panel 7.

[0037] In this embodiment, the adjustable positioning base 4 of the central column includes a lower screw 41, an adjusting support plate 42, and a base stiffening plate 43. The bottom of the lower screw 41 is fixedly connected to the center of the top surface of the column top placement plate 31. The upper half of the lower screw 41 is inserted into the lower tube 52 from the bottom. The center of the adjusting support plate 42 has an internal thread that is compatible with the lower screw 41. The adjusting support plate 42 is threadedly connected to the lower screw 41, and the bottom surface of the lower tube 52 rests on the top surface of the adjusting support plate 42. The base stiffening plate 43 is fixedly connected between the bottom side wall of the lower screw 41 and the top surface of the column top placement plate 31.

[0038] The base stiffening plate 43 has four pieces around the lower screw 41, all of which are right-angled triangular plates. The adjusting support plate 42 is spindle-shaped, and the central dimension is larger than the outer diameter of the lower tube 52.

[0039] In this embodiment, the adjustable positioning top support 6 of the central column includes an upper screw 61, an adjusting lower pressure plate 62, and a top support stiffening plate 63. The bottom of the upper screw 61 is fixedly connected to the center of the column top placement support plate 31. The lower half of the lower screw 41 is inserted into the upper tube 51 from the top. The center of the adjusting lower pressure plate 62 has an internal thread that is compatible with the upper screw 61. The adjusting lower pressure plate 62 is threadedly connected to the upper screw 61, and the bottom surface of the upper tube 51 rests against the bottom surface of the adjusting lower pressure plate 62. The top surface of the upper screw 61 is fixedly connected to the center of the bottom surface of the template panel. The top support stiffening plate 63 is fixedly connected between the top side wall of the upper screw 61 and the bottom surface of the template panel 7.

[0040] The top support stiffening plate 63 has four pieces around the upper screw 61, all of which are right-angled triangular plates. The adjusting lower pressure plate 62 is spindle-shaped, and the central dimension is larger than the outer diameter of the upper tube 51.

[0041] In this embodiment, the lower screw 41 is a steel screw with a length of 500mm and a diameter of 30mm. The base stiffening plate 43 is a steel plate with a height of 50mm, a length of 100mm, and a thickness of 3mm. The lower screw 41 is welded to the adjusting support plate 42, and the bottom sidewalls of the base stiffening plate 43 and the screw 41 are all welded to the top surface of the column top placement support plate 31.

[0042] The lower pipe 52 is 1500mm long, the inter-pipe sleeve 53 is 250mm long, and the steel pipe has an inner diameter of 52mm and an outer diameter of 60mm. A solid force transmission plate 54 is installed in the middle to connect the lower pipe 52 and the upper pipe 51 and to transmit axial force.

[0043] The upper screw 61 is a steel screw with a length of 300mm and a diameter of 30mm. The top support stiffening plate 63 is a steel plate with a height of 30mm, a length of 60mm, and a thickness of 3mm. The upper screw 61 is welded to the top support stiffening plate 63, and the top sidewalls of the top support stiffening plate 63 and the upper screw 61 are all welded to the bottom surface of the template panel 7.

[0044] The template panel 7 is pressed tightly against the bottom surface of the upper floor slab 2 and seals the bottom of the upper opening 21. In this embodiment, the template panel 7 is a thick steel plate with a length of 300mm, a width of 300mm, and a thickness of 3mm.

[0045] The construction process of this utility model is as follows: In actual use, the upper pipe 52 can be reasonably selected for erection when the height difference is large, and the height difference is small when the height difference is small. The height can be adjusted by using the adjustable positioning base 4 of the middle column and the adjustable positioning top support 6 of the middle column to meet the requirements.

[0046] Example 1:

[0047] Step 1: On-site fabrication of the overhead base frame 3, the adjustable positioning base of the central column 4, the adjustable positioning top support of the central column 6, and the template panel 7; fabrication of the lower pipe 52;

[0048] Step 2: Based on the distance between the upper floor slab and the lower floor slab, fabricate the upper pipe 51;

[0049] Step 3: Then, fix the adjustable positioning base 4 of the central column and the elevated base frame 3 into one piece, place it on the lower opening of the lower floor slab, and put an anti-slip pad 8 between the elevated base frame 3 and the lower floor slab 2.

[0050] Step 4: Connect the lower tube to the lower screw 41 of the adjustable positioning base 4 of the central column;

[0051] Step 5: Place the inter-pipe sleeve 53 onto the top of the lower pipe 52;

[0052] Step 6: Select an upper pipe 51 of appropriate length according to the distance between floor slabs, and then place the upper pipe 51 on top of the pipe sleeve 53 between pipes.

[0053] Step 7: Insert the upper screw 61 of the adjustable positioning top support 6 of the central column into the top of the upper tube 51; then adjust the lower pressure plate 62 so that the template panel 7 is pressed against the bottom surface of the upper opening 21.

[0054] Step 8: Pour concrete into the upper opening 21.

[0055] Example 2:

[0056] Step 1: On-site fabrication of the overhead base frame 3, the adjustable positioning base of the central column 4, the adjustable positioning top support of the central column 6, and the template panel 7; fabrication of the upper pipe 51 and the lower pipe 52;

[0057] Step 2: Then, fix the adjustable positioning base 4 of the central column and the elevated base frame 3 into one piece, place it on the lower opening of the lower floor slab, and put an anti-slip pad 8 between the elevated base frame 3 and the lower floor slab 2.

[0058] Step 3: Connect the lower tube to the lower screw 41 of the adjustable positioning base 4 of the central column;

[0059] Step 4: Place the inter-pipe sleeve 53 onto the top of the lower pipe 52;

[0060] Step 5: Place the upper pipe 51 on top of the inter-pipe sleeve 53;

[0061] Step 6: Insert the upper screw 61 of the adjustable positioning top support 6 of the middle column into the top of the upper tube 51; then adjust the adjusting support plate 42 of the adjustable positioning base 4 of the middle column and the adjusting lower pressure plate 62 of the adjustable positioning top support 6 of the middle column in sequence, so that the template panel 7 is pressed against the bottom surface of the upper opening 21.

[0062] Step 7: Pour concrete into the upper opening 21.

Claims

1. A connection structure for a synchronous construction device for secondary pouring of reserved openings in double-layer floor slabs, characterized in that: It comprises a lower floor (1), an upper floor (2) and a synchronous construction steel support device arranged between the two, the lower floor (1) is provided with a lower opening (11), the upper floor (2) is provided with an upper opening (21), the upper opening (21) is arranged opposite to the lower opening (11), The synchronous construction steel support device comprises, from bottom to top, an overhead base frame (3), a middle column adjustable positioning base (4), a middle column force transmission group pipe (5), a middle column adjustable positioning top support (6) and a formwork panel (7), The overhead base frame (3) comprises a column top object supporting plate (31) and an overhead column (32) fixedly connected to the four corner positions of the bottom of the column top object supporting plate (31), the overhead base frame (3) is arranged directly above the lower opening (11), the size of the column top object supporting plate (31) is greater than that of the lower opening (11), the overhead column (32) is arranged around the lower opening (11), and the height of the overhead column (32) is greater than the construction height, The middle column force transmission group pipe (5) comprises upper pipes (51) and lower pipes (52) with the same diameter, the bottom of the upper pipe (51) and the top of the lower pipe (52) are integrally connected through a pipe interlayer sleeve pipe (53), The middle column adjustable positioning base (4) is fixedly connected to the center of the column top object supporting plate (31), the middle column adjustable positioning base (4) is inserted into the bottom of the lower pipe (52) and is adjustable in height, the middle column adjustable positioning top support (6) is inserted into the top of the upper pipe (51) and is adjustable in height, and the top surface of the middle column adjustable positioning top support (6) is fixedly connected to the bottom surface of the center of the formwork panel (7), The formwork panel (7) is tightly arranged on the bottom surface of the upper floor (2) and seals the bottom of the upper opening (21).

2. The connecting structure of the secondary pouring synchronous construction device for the double-layer floor reserved hole according to claim 1, characterized in that: The middle column adjustable positioning base (4) comprises a lower screw rod (41), an adjusting supporting plate (42) and a base stiffening plate (43), the bottom of the lower screw rod (41) is fixedly connected to the center of the top surface of the column top object supporting plate (31), the upper half of the lower screw rod (41) is inserted into the lower pipe (52), the center of the adjusting supporting plate (42) is provided with an internal thread matched with the lower screw rod (41), the adjusting supporting plate (42) is threadedly connected with the lower screw rod (41), and the bottom surface of the lower pipe (52) is arranged on the top surface of the adjusting supporting plate (42), and the base stiffening plate (43) is fixedly connected between the bottom side wall of the lower screw rod (41) and the top surface of the column top object supporting plate (31).

3. The connecting structure of the secondary pouring synchronous construction device for the double-layer floor reserved hole according to claim 2, characterized in that: The base stiffening plate (43) is provided with four straight triangle plates around the lower screw rod (41), and the adjusting supporting plate (42) is in a shuttle shape and has a size greater than the outer diameter of the lower pipe (52).

4. The connecting structure of the secondary pouring synchronous construction device for the reserved hole of the double-layer floor according to any one of claims 1-3, characterized in that: The center column adjustable positioning top support (6) comprises an upper screw rod (61), an adjusting lower pressing plate (62) and a top support stiffening plate (63), the bottom of the upper screw rod (61) is fixedly connected in the center of the column top object supporting plate (31), the lower half of the lower screw rod (41) is inserted into the upper pipe (51) from the top of the upper pipe (51), the center of the adjusting lower pressing plate (62) is provided with an inner thread matched with the upper screw rod (61), the adjusting lower pressing plate (62) is threadedly connected with the upper screw rod (61), meanwhile the bottom surface of the upper pipe (51) is supported on the bottom surface of the adjusting lower pressing plate (62), the top surface of the upper screw rod (61) is fixedly connected with the bottom surface of the center of the formwork panel, and the top support stiffening plate (63) is fixedly connected between the top of the upper screw rod (61) and the bottom surface of the formwork panel (7).

5. The connecting structure of the secondary pouring simultaneous construction device for the double-layer floor reserved hole according to claim 4, characterized in that: The four top support stiffening plates (63) are arranged around the upper screw rod (61) and are all right-angled triangular plates, and the adjusting lower pressing plate (62) is shuttle-shaped and has a larger size in the middle than the outer diameter of the upper pipe (51).

6. The connecting structure of the secondary pouring simultaneous construction device for the double-layer floor reserved hole according to claim 1, characterized in that: The formwork panel (7) is a thick steel plate with a thickness not less than 3 mm.

7. The connecting structure of the secondary pouring synchronous construction device for the double-layer floor reserved hole according to claim 1, characterized in that: The upper pipe (51) and the lower pipe (52) have the same diameter, the inner diameter of the inter-pipe sleeve (53) is matched with the outer diameter of the upper pipe (51) or the outer diameter of the lower pipe (52), the inter-pipe sleeve (53) is internally provided with a horizontal solid force transmission plate (54), the bottom of the upper pipe (51) is placed on the top surface of the solid force transmission plate (54), and the top of the lower pipe (52) is supported on the bottom surface of the solid force transmission plate (54).

8. The connecting structure of the secondary pouring simultaneous construction device for the double-layer floor reserved hole according to claim 1, characterized in that: The overhead column (32) is a steel pipe, and the overhead column (32) and the top surface of the lower floor (1) are provided with an anti-skid pad (8).

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