A formwork support device for post-cast concrete strips

Abstract

A concrete post-pouring strip formwork support device, belonging to the technical field of formwork support devices, addresses the problems of inconvenient height adjustment and poor stability caused by internal cavities in traditional support components. This device consists of a hollow tube, externally threaded columns, fixing rings, crossbars, a top plate, a bottom plate, triangular reinforcing plates, pre-drilled holes, a pouring port, and a pouring hopper. The hollow tube has internal threads on its inner wall, which connect to the externally threaded columns. Stepless height adjustment is achieved by rotating the crossbar. The top and bottom plates expand the support area and are bolted to the formwork and foundation surface through the pre-drilled holes. The pouring port is located at the lower edge of the internal threads and, together with the extended pouring hopper, fills the hollow tube cavity, eliminating voids and improving compressive strength. The ring-shaped array of triangular reinforcing plates enhances the connection strength of key nodes. This device has a stable structure, is easy to operate, and is suitable for supporting post-pouring strip formwork within a certain height range.

Description

Technical Field

[0001] This utility model relates to the field of agricultural fertilization technology, and in particular to a formwork support device for concrete post-pouring strips. Background Technology

[0002] In the field of construction engineering, concrete post-pouring strips are temporary construction joints reserved to cope with adverse factors such as concrete shrinkage, temperature changes, and settlement differences. The subsequent pouring of concrete will connect the structure into a whole, thereby reducing cracks, controlling deformation, and ensuring structural safety.

[0003] Currently, the most common support components used to support the bottom of the casting mold for post-cast strips are vertical bars of fixed length. When using these vertical bars, it is often necessary to insert a support plate at the top to reduce the gap between the vertical bar and the formwork. This operation is cumbersome and it is difficult to accurately eliminate the gap. While height-adjustable vertical bars can solve some of the height adaptation problems, they have internal cavities, resulting in poor support stability and making it difficult to meet the requirements of building engineering for the stability and reliability of post-cast strip support.

[0004] To address the aforementioned problems, this utility model document proposes a formwork support device for post-cast concrete strips. Utility Model Content

[0005] This utility model provides a concrete post-pouring strip formwork support device, which solves the problems of existing technologies where fixed-length vertical rods often require a support plate to be inserted at the top to reduce the gap between the vertical rod and the formwork, which is cumbersome and difficult to accurately eliminate the gap. While height-adjustable vertical rods can solve some height matching problems, they have internal cavities, resulting in poor support stability.

[0006] This utility model provides the following technical solution:

[0007] A formwork support device for post-cast concrete strips, comprising:

[0008] A hollow tube, wherein a height-adjustable external threaded column is provided in the cavity of the hollow tube, and the hollow tube is threadedly connected to the external threaded column through the internal thread at the upper end of the inner wall. A pouring port for filling the cavity with concrete is provided on the tube body of the hollow tube, and an extended pouring hopper is welded and fixed at the pouring port.

[0009] In one possible design, a fixing ring is welded and fixed to the body of the external threaded column, and two crossbars for rotating the external threaded column are symmetrically welded and fixed to the outer wall of the fixing ring.

[0010] In one possible design, a top plate for expanding the support area is welded to the top of the externally threaded column, and a bottom plate is welded to the bottom of the hollow tube.

[0011] In one possible design, multiple triangular reinforcing plates are welded and fixed in a ring array between the external threaded column and the top plate, and between the hollow tube and the bottom plate for reinforcement.

[0012] In one possible design, both the top plate and the bottom plate are provided with a plurality of pre-drilled holes in a circular array, which are reinforced by bolts.

[0013] In one possible design, the gating port is located at the lower edge of the internal thread and the external thread post does not completely close the gating port.

[0014] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the present invention.

[0015] The working principle and usage process of this technical solution are as follows:

[0016] During installation, the hollow tube is placed vertically at the designed position of the post-pouring strip, with the bottom contacting the foundation surface through the base plate to ensure verticality. By rotating the horizontal bar on the external threaded column, the extension height of the external threaded column is adjusted by utilizing the internal thread engagement between the external threaded column and the inner wall of the hollow tube, so that the top plate is pressed tightly against the bottom of the post-pouring strip template to eliminate gaps. Then, the device is fixed to the template and foundation surface with bolts through the reserved holes on the top plate and the base plate to prevent displacement.

[0017] Then, concrete is poured into the hollow tube from the pouring port using the extended pouring hopper to fill the cavity, eliminate internal cavities, and improve support stability. Since the pouring port is located at the lower edge of the internal thread and the external thread column does not completely close the pouring port, it can ensure smooth concrete pouring. Among them, the triangular reinforcing plates of the ring array enhance the connection strength between the external thread column and the top plate, and between the hollow tube and the bottom plate, preventing local stress concentration. After multiple devices are installed in sequence and the concrete in the tube has solidified, the post-pouring strip concrete is poured. The device, as part of the formwork support system, ensures that the formwork does not deform during the pouring process.

[0018] This utility model has the following beneficial effects:

[0019] This utility model supports stepless height adjustment through the threaded connection between the external threaded column and the hollow tube, adapting to the support requirements of different post-pouring strip templates. It avoids the cumbersome operation of traditional vertical rods that require the use of padding support plates, and the external threaded column can be rotated by the horizontal bar on the fixing ring, making operation convenient.

[0020] This utility model transforms the traditional hollow support into a solid structure by filling the inner cavity of the hollow tube with concrete through the pouring port and pouring hopper, which greatly improves the compressive strength and deformation resistance. The filled hollow tube forms a stable foundation with the base plate.

[0021] In this invention, the triangular reinforcing plates arranged in a ring array enhance the connection strength of key nodes and reduce the risk of cracking or deformation caused by stress concentration; the reserved holes on the top and bottom plates support bolt reinforcement, further improving the connection stability between the device and the template and foundation surface. Attached Figure Description

[0022] Figure 1 A three-dimensional structural schematic diagram of a concrete post-pouring strip formwork device provided in an embodiment of this utility model;

[0023] Figure 2 Another structural schematic diagram of a concrete post-pouring strip formwork device provided in an embodiment of this utility model;

[0024] Figure 3 A schematic diagram of the external threaded column structure of a concrete post-pouring strip formwork support device provided in this embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the internal structure of a hollow tube in a concrete post-pouring strip formwork support device provided in an embodiment of this utility model.

[0026] Reference numerals: 1. Hollow tube; 2. Internal thread; 3. External thread post; 4. Fixing ring; 5. Crossbar; 6. Top plate; 7. Bottom plate; 8. Triangular reinforcing plate; 9. Reserved hole; 10. Pouring port; 11. Pouring bucket. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] To keep the following description of the embodiments of this utility model clear and concise, detailed descriptions of known functions and known components are omitted.

[0030] Please refer to Figure 1-4A formwork support device includes a hollow tube 1, an externally threaded column 3, a fixing ring 4, a crossbar 5, a top plate 6, a bottom plate 7, a triangular reinforcing plate 8, a reserved hole 9, a pouring port 10, and a pouring hopper 11.

[0031] The hollow tube 1 is the main structure of the entire device. Its interior is a hollow cavity. The upper end of the inner wall of the hollow tube 1 is provided with an internal thread 2 for threaded connection with the external thread column 3. A pouring port 10 is opened on the tube body of the hollow tube 1. The pouring port 10 is located at the lower edge of the internal thread 2, and an extended pouring hopper 11 is welded and fixed at the pouring port 10 to facilitate the pouring of concrete into the hollow tube 1.

[0032] The bottom end of the external threaded column 3 is set inside the cavity of the hollow tube 1. By engaging with the internal thread 2 on the inner wall of the hollow tube 1, the height can be adjusted. A fixing ring 4 is welded and fixed on the column body of the external threaded column 3. Two crossbars 5 are symmetrically welded and fixed on the outer wall of the fixing ring 4. By rotating the crossbars 5, the external threaded column 3 can be rotated, thereby adjusting its height extending out of the hollow tube 1.

[0033] A top plate 6 is welded and fixed to the top of the external threaded column 3. The top plate 6 is used to expand the support area so that it can better press against the bottom of the post-pouring strip template. A bottom plate 7 is welded and fixed to the bottom of the hollow tube 1. The bottom plate 7 is in contact with the foundation surface to provide stable support for the device.

[0034] In the actual installation process, the hollow tube 1 is placed vertically at the design position of the post-pouring strip, so that the base plate 7 is in contact with the foundation surface. The verticality of the hollow tube 1 is ensured by tools such as a level. Then, by rotating the crossbar 5 on the external thread column 3, the external thread column 3 is engaged with the internal thread 2 on the inner wall of the hollow tube 1 to adjust the extension height of the external thread column 3, so that the top plate 6 is pressed tightly against the bottom of the post-pouring strip template to eliminate gaps.

[0035] After the installation and fixing of the device are completed, concrete is poured into the hollow tube 1 through the extended pouring hopper 11 from the pouring port 10. Since the pouring port 10 is located at the lower edge of the internal thread 2 and the external thread column 3 does not completely close the pouring port 10, it can be ensured that the concrete is poured smoothly and fills the cavity of the hollow tube 1. After the concrete in the hollow tube 1 has solidified, the device and the base plate 7 form a stable foundation, which greatly improves the compressive strength and deformation resistance. After multiple devices are installed in sequence and the concrete in the tube has solidified, the post-pouring strip concrete can be poured. As part of the formwork support system, the device can ensure that the formwork does not deform during the pouring process and meet the construction requirements of the building project.

[0036] This application can be used for formwork support of post-cast concrete strips, and can also be used in other fields applicable to this application.

[0037] A formwork support device for post-cast concrete strips, which is used in the field of formwork support devices;

[0038] Please refer to Figure 1To enhance the connection strength of the device, multiple triangular reinforcing plates 8 are welded and fixed in a ring array between the external threaded column 3 and the top plate 6, and between the hollow tube 1 and the bottom plate 7. These triangular reinforcing plates 8 can reduce the risk of cracking or deformation caused by stress concentration.

[0039] Both the top plate 6 and the bottom plate 7 have multiple reserved holes 9 arranged in a ring array. The reserved holes 9 are used to reinforce the device with the template and foundation surface by bolts to prevent the device from shifting during the support process.

[0040] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0041] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A formwork support device for post-cast concrete strips, characterized in that, include: A hollow tube (1) is provided with a height-adjustable external threaded column (3) in the cavity of the hollow tube (1). The hollow tube (1) is threadedly connected to the external threaded column (3) through the internal thread (2) at the upper end of the inner wall. A pouring port (10) for filling the cavity with concrete is provided on the tube body of the hollow tube (1). An extended pouring hopper (11) is welded and fixed at the pouring port (10).

2. The formwork support device for post-cast concrete strips according to claim 1, characterized in that, A fixing ring (4) is welded and fixed on the body of the external threaded column (3), and two crossbars (5) for rotating the external threaded column (3) are symmetrically welded and fixed on the outer wall of the fixing ring (4).

3. The formwork support device for post-cast concrete strips according to claim 1, characterized in that, The top of the external threaded column (3) is welded and fixed with a top plate (6) for expanding the support area, and the bottom of the hollow tube (1) is welded and fixed with a bottom plate (7).

4. A formwork support device for post-cast concrete strips according to claim 3, characterized in that, The external threaded column (3) and the top plate (6), as well as the hollow tube (1) and the bottom plate (7), are all welded together in a ring array with multiple triangular reinforcing plates (8) for reinforcement.

5. A formwork support device for post-cast concrete strips according to claim 3, characterized in that, Both the top plate (6) and the bottom plate (7) are provided with multiple reserved holes (9) in a ring array, which are reinforced by bolts.

6. A formwork support device for post-cast concrete strips according to claim 1, characterized in that, The pouring port (10) is located at the lower edge of the internal thread (2) and the external thread post (3) does not completely close the pouring port (10).

Images