A support frame for cast-in-place concrete floor

Abstract

The utility model discloses a support frame for cast-in-place concrete floor slab relates to building construction technical field, including vertical pipe, and the outer wall of vertical pipe is equipped with detachable connection's horizontal pole, adjustable jack -up, installs at the top of vertical pipe, and adjustable jack -up is by the head of jack -up rod and jack -up, and the outer wall fixed connection of jack -up rod has abutment disc, lengthening sleeve, and the outer wall of jack -up rod is movably sleeved, and the top of lengthening sleeve and the bottom of abutment disc are mutually abutted, and the bottom of lengthening sleeve and the top end of vertical pipe are adjustably fixedly connected through locking mechanism, main keel, installs at the top of jack -up head, and the top of main keel is equipped with with concrete formwork mutually abutted secondary keel, the utility model discloses the lengthening sleeve of setting, equivalent to the " extension arm " of vertical pipe, has provided second -level, wide -range coarse adjustment, and then cooperates the fine adjustment of jack -up screw rod, makes the total adjustment range of whole support frame greatly increase, can cope with various special floor height and local height difference.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to a support frame for cast-in-place concrete floor slabs. Background Technology

[0002] In the construction of cast-in-place concrete slabs, the support frame is a key structure used to temporarily bear the weight of the concrete. Existing support frames typically consist of vertical pipes, horizontal bars, adjustable top supports, and primary and secondary joists. The vertical pipes are connected by horizontal bars to form a stable support frame. Adjustable top supports are installed at the top of the vertical pipes to adjust the support height, while the primary and secondary joists directly bear the concrete slab. This structure has the advantages of simple installation and low cost, and is widely used in various construction projects.

[0003] However, in actual installation, the adjustable top support of the existing support frame has a limited range of adjustment and cannot adapt to certain special floor heights (such as non-standard floor heights or local height differences). This results in the need to add extra pads or cut the risers during construction, which not only increases the difficulty and time of construction, but may also affect the stability and safety of the support frame. Utility Model Content

[0004] The purpose of this utility model is to provide a support frame for cast-in-place concrete floor slabs, so as to solve the problem that the adjustable top support of the existing support frame has a limited adjustment range, and cannot achieve the required support height by simple adjustment when encountering non-standard floor heights or local height differences on the floor.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a support frame for cast-in-place concrete floor slabs, comprising a vertical pipe, wherein the outer wall of the vertical pipe is provided with a detachably connected horizontal bar;

[0006] An adjustable top support is installed on the top of the riser. The adjustable top support consists of a top support rod and a top support head. An abutment plate is fixedly connected to the outer wall of the top support rod.

[0007] An extended sleeve is movably fitted onto the outer wall of the top support rod. The top of the extended sleeve abuts against the bottom of the abutment plate, and the bottom of the extended sleeve is adjustablely and fixedly connected to the top of the riser through a locking mechanism.

[0008] The main keel is installed on the top of the top support head, and the top of the main keel is provided with a secondary keel that abuts against the concrete formwork.

[0009] Furthermore, the locking mechanism is a locking stud, which is fixedly installed inside the extended sleeve. The top of the riser is provided with a threaded hole, the locking stud is screwed into the threaded hole, and the bottom of the extended sleeve is movably abutting against the top of the riser.

[0010] Furthermore, the bottom of the riser is provided with a reinforcing disc that fits into the ground.

[0011] Furthermore, the horizontal bar is connected to the vertical pipe via steel pipe fasteners to form a grid-like support frame.

[0012] Furthermore, the vertical cross-section of the top support head is concave, the main keel is fitted into the concave opening of the top support head, and the side wall of the top support head is symmetrically provided with positioning pins, which pass through the side wall of the top support head and are inserted into the corresponding holes of the main keel.

[0013] Furthermore, the outer wall of the extended sleeve is provided with a rotating part, and the cross-section of the rotating part is hexagonal.

[0014] Furthermore, the main keel is a square steel body with a rectangular cross-section, and the secondary keel is a C-shaped steel body. The C-shaped opening of the secondary keel is set downward and has spaced slots, and the main keel is inserted into the slots.

[0015] Compared with the prior art, the support frame for cast-in-place concrete floor slabs provided by this utility model has a core force transmission path formed by the combination design of "extended sleeve-abutment plate-locking mechanism". The extended sleeve is movably sleeved outside the top support rod, its top is limited by the abutment plate, and its bottom is fixed to the riser through the locking mechanism. This allows the vertical load generated by concrete pouring to be effectively transferred to the extended sleeve through the abutment plate, and then evenly transferred to the riser below and the entire support frame through the locking mechanism. This effectively avoids the bending and instability problems that are easily caused by traditional top supports that rely solely on threaded engagement for force, and enhances the overall rigidity and load-bearing capacity of the support system.

[0016] Secondly, in terms of construction precision and efficiency, the structure enables convenient fine-tuning and precise control. Rotating the extended sleeve drives the locking stud to move up and down within the thread, achieving coarse adjustment of the support height, while the adjustable characteristics of the top support rod itself are used for precise fine-tuning. The combination of the two not only makes the control of the floor slab elevation more accurate and efficient, but also greatly increases the total adjustment range of the entire support frame, which can cope with various special floor heights and local height differences. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure of the support frame for the cast-in-place concrete floor slab provided in this embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the structure of components such as the riser and adjustable top support provided in the embodiments of this utility model;

[0020] Figure 3 This is a cross-sectional view of the extended sleeve and riser components provided in an embodiment of the present utility model.

[0021] Figure 4 A schematic diagram of the main keel and secondary keel components provided for an embodiment of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Riser; 2. Horizontal bar; 3. Adjustable top support; 301. Top support rod; 302. Top support head; 4. Abutment plate; 5. Extended sleeve; 6. Main keel; 7. Secondary keel; 8. Locking stud; 9. Threaded hole; 10. Reinforcing plate; 11. Steel pipe fastener; 12. Positioning pin; 13. Rotating part; 14. Slot. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] As attached Figure 1 To be continued Figure 4 As shown:

[0026] Example:

[0027] This utility model provides a support frame for cast-in-place concrete floor slabs, including a vertical pipe 1, and the outer wall of the vertical pipe 1 is provided with a detachably connected horizontal bar 2;

[0028] An adjustable top support 3 is installed on the top of the riser 1. The adjustable top support 3 consists of a top support rod 301 and a top support head 302. An abutment plate 4 is fixedly connected to the outer wall of the top support rod 301.

[0029] The extended sleeve 5 is movably sleeved on the outer wall of the top support rod 301. The top of the extended sleeve 5 abuts against the bottom of the abutting plate 4. The bottom end of the extended sleeve 5 is adjustablely and fixedly connected to the top end of the riser 1 through a locking mechanism.

[0030] The main keel 6 is installed on the top of the top support head 302, and the top of the main keel 6 is provided with a secondary keel 7 that abuts against the concrete formwork.

[0031] It should be noted that the core force transmission path is formed by the combination design of "extended sleeve 5-abutment plate 4-locking mechanism". The extended sleeve 5 is movably sleeved outside the top support rod 301. Its top is limited by the abutment plate 4, and its bottom is fixed to the riser 1 through the locking mechanism. This allows the vertical load generated by concrete pouring to be effectively transmitted to the extended sleeve 5 through the abutment plate 4, and then evenly transmitted to the riser 1 and the entire support frame below through the locking mechanism. This effectively avoids the bending and instability problems that are easily caused by traditional top supports relying solely on threaded engagement for force, and enhances the overall rigidity and load-bearing capacity of the support system.

[0032] Secondly, in terms of construction precision and efficiency, the structure enables convenient fine-tuning and precise control. Rotating the extended sleeve 5 drives the locking stud 8 to move up and down within the thread, achieving coarse adjustment of the support height. Meanwhile, the adjustable characteristics of the top support rod 301 itself are used for precise fine-tuning. The combination of the two not only makes the control of the floor slab elevation more accurate and efficient, but also greatly increases the total adjustment range of the entire support frame, which can cope with various special floor heights and local height differences.

[0033] The working principle of this embodiment is as follows: When building the support frame, firstly, according to the target floor height, select an extension sleeve 5 of appropriate length and movably fit it onto the outside of the top support rod 301 of the adjustable top support 3. A locking stud 8 is fixedly connected inside the extension sleeve 5. The bottom of the locking stud 8 is screwed into the threaded hole 9 at the top of the riser 1. The main keel 6 is inserted into the top support head 302, and the secondary keel 7 is installed on the top of the main keel 6. When it is necessary to adjust the height of the support frame, the tool is clamped on the rotating part 13 outside the extension sleeve 5, and torque is applied to the extension sleeve 5, so that the locking stud 8 fixedly installed inside rotates in the threaded hole 9, thereby driving the extension sleeve 5 to rise as a whole. The top of the rising extension sleeve 5 abuts against the abutment plate 4 welded to the outer wall of the top support rod 301, thereby applying an upward pushing force to the abutment plate 4, thereby driving the top support rod 301 to rise inside the extension sleeve 5, realizing the adjustment of the height of the support frame.

[0034] In this embodiment: the locking mechanism is a locking stud 8, which is fixedly installed inside the extended sleeve 5. The top of the riser 1 is provided with a threaded hole 9. The locking stud 8 is screwed into the threaded hole 9. The bottom of the extended sleeve 5 is in movable contact with the top of the riser 1.

[0035] It should be noted that the locking stud 8 is internally fixedly connected to the extended sleeve 5, and its adjustable fixation is achieved by screwing it into the threaded hole 9 at the top of the riser 1. This threaded connection provides strong locking force, ensuring a rigid connection between the extended sleeve 5 and the riser 1. The bottom of the extended sleeve 5 movably abuts against the top of the riser 1, forming surface contact, which effectively disperses local stress and avoids stress concentration problems caused by point contact. This design not only simplifies the installation and disassembly process but also improves the stability and safety of the support system. Especially when subjected to large vertical loads, it can effectively prevent loosening or slippage at the connection, ensuring the smooth transfer of loads.

[0036] In this embodiment: the bottom of the riser 1 is provided with a reinforcing plate 10 that fits into the ground.

[0037] It should be noted that the reinforcing plate 10, located at the bottom of the riser 1, increases the contact area with the ground, reduces the pressure of the riser 1 on the foundation, and prevents settlement or tilting on soft foundations or uneven ground. The reinforcing plate 10 also improves the riser 1's resistance to lateral displacement and overall stability, reducing the risk of swaying due to external forces or load changes during construction. This design enhances the adaptability of the support frame to complex site conditions, extends its service life, simplifies foundation treatment requirements, and improves construction efficiency and economy.

[0038] In this embodiment: the horizontal bar 2 is connected to the vertical pipe 1 through the steel pipe fastener 11 to form a grid-like support frame.

[0039] It should be noted that the horizontal bar 2 and the vertical pipe 1 are connected by steel pipe couplers 11 to form a grid-like support frame. This structure can evenly distribute vertical loads and resist horizontal forces, improving the rigidity and stability of the overall support system. The grid-like frame provides multiple support paths, reducing the risk of excessive stress at a single point and ensuring uniform load distribution. The steel pipe couplers 11 are simple and reliable, allowing for rapid assembly and adjustment, adapting to various construction layout requirements, improving the efficiency of erection and dismantling, and reducing labor intensity.

[0040] In this embodiment: the vertical cross-section of the top support head 302 is concave, the main keel 6 is fitted into the concave opening of the top support head 302, and the side wall of the top support head 302 is symmetrically provided with positioning pins 12. The positioning pins 12 pass through the side wall of the top support head 302 and are inserted into the corresponding holes of the main keel 6.

[0041] It should be noted that the concave design of the top support head 302 facilitates the quick insertion and initial positioning of the main keel 6. The locking mechanism ensures stable placement of the main keel 6, while the symmetrically arranged positioning pins 12 further lock the position of the main keel 6, preventing lateral displacement or detachment during construction and ensuring a reliable connection between the main keel 6 and the top support head 302. This structure not only improves installation accuracy and efficiency but also reduces the use of additional fasteners, simplifies the construction process, and enhances the shear resistance of the connection points and overall safety.

[0042] In this embodiment: the outer wall of the extended sleeve 5 is provided with a rotating part 13, and the cross-section of the rotating part 13 is hexagonal.

[0043] It should be noted that the rotating part 13 adopts a hexagonal cross-section design, which facilitates rotational operation using a standard wrench or tool, enabling convenient and precise adjustment of the extended sleeve 5. The hexagonal structure provides multiple force-bearing surfaces, effectively preventing tool slippage and ensuring smooth torque transmission, making the height adjustment process more effortless and controllable. This design is particularly suitable for construction scenarios requiring frequent adjustments, improving adjustment efficiency and accuracy while reducing operational difficulty and the risk of tool damage.

[0044] In this embodiment: the main keel 6 is a square steel body with a rectangular cross section, the secondary keel 7 is a C-shaped steel body, the C-shaped opening of the secondary keel 7 is set downward and is provided with spaced slots 14, and the main keel 6 is inserted into the slots 14.

[0045] It should be noted that the main keel 6 is a square steel body with a rectangular cross-section, possessing high bending strength and stability, effectively bearing and transferring the load from the secondary keel 7. The secondary keel 7 is a C-shaped steel body with the C-shaped opening facing downwards and equipped with spaced slots 14, allowing the main keel 6 to be quickly inserted into the slots 14, achieving a firm connection and precise positioning between the two. The spaced distribution of the slots 14 allows for flexible adjustment of the spacing of the secondary keels 7 according to the template size, adapting to different construction needs. This design improves the assembly efficiency and overall rigidity of the keel system, ensures uniform load distribution, reduces the risk of deformation, and enhances the reliability of the support.

[0046] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A support frame for a cast-in-place concrete floor, characterised in that, include: A riser (1) is provided with a detachably connected horizontal bar (2) on the outer wall of the riser (1); An adjustable top support (3) is installed on the top of the riser (1). The adjustable top support (3) consists of a top support rod (301) and a top support head (302). An abutment plate (4) is fixedly connected to the outer wall of the top support rod (301). An extended sleeve (5) is movably sleeved on the outer wall of the top support rod (301). The top of the extended sleeve (5) abuts against the bottom of the abutting plate (4). The bottom end of the extended sleeve (5) is adjustablely fixedly connected to the top end of the riser (1) through a locking mechanism. The main keel (6) is installed on the top of the top support head (302), and the top of the main keel (6) is provided with a secondary keel (7) that abuts against the concrete formwork.

2. A support frame for a cast in situ concrete floor as claimed in claim 1, characterised in that, The locking mechanism is a locking stud (8), which is fixedly installed inside the extended sleeve (5). The top of the riser (1) is provided with a threaded hole (9). The locking stud (8) is screwed into the threaded hole (9). The bottom of the extended sleeve (5) is in movable contact with the top of the riser (1).

3. A support shelf for use in cast-in-place concrete floors as defined in claim 2, characterized in that The bottom of the riser (1) is provided with a reinforcing plate (10) that fits in contact with the ground.

4. A support shelf for cast-in-place concrete floors as defined in claim 1, characterized in that The horizontal bar (2) is connected to the vertical pipe (1) through steel pipe fasteners (11) to form a grid-like support frame.

5. A support shelf for cast-in-place concrete floors as defined in claim 1, characterized in that The vertical cross-section of the top support head (302) is concave. The main keel (6) is fitted into the concave opening of the top support head (302). The side wall of the top support head (302) is symmetrically provided with positioning pins (12). The positioning pins (12) pass through the side wall of the top support head (302) and are inserted into the corresponding holes of the main keel (6).

6. A support shelf for use in cast-in-place concrete floors as defined in claim 1, characterized in that The outer wall of the extended sleeve (5) is provided with a rotating part (13), and the cross-section of the rotating part (13) is hexagonal.

7. A support shelf for cast-in-place concrete floors as defined in claim 1, characterized in that The main keel (6) is a square steel body with a rectangular cross section, and the secondary keel (7) is a C-shaped steel body. The C-shaped opening of the secondary keel (7) is set downward and is provided with spaced slots (14). The main keel (6) is inserted into the slots (14).

Images