External hanging formwork for assembly type steel structure building

Abstract

The utility model provides an assembly type steel structure building external hanging formwork which comprises a first external hanging formwork body, a second external hanging formwork body, an assembly plate body, a moving rod and an anti-disengaging rod, the first external hanging formwork body is located on the left side of the assembly plate body, the second external hanging formwork body is located on the right side of the assembly plate body, and a step base is fixed to the lower end of the assembly plate body; limiting plates are fixed to the upper ends of the left side and the right side in the assembling plate body, springs are installed in the two limiting plates, shifting plates are installed at the opposite outer ends of the two springs, positioning protruding blocks are installed at the opposite outer ends of the two shifting plates, and a plurality of inserting grooves are formed in the opposite inner ends of the first external hanging formwork and the second external hanging formwork. By means of the design, the problem that in an original device, the strength is low due to the fact that two formworks are indirectly connected only through a few connecting blocks is solved, a lapping positioning and gear transmission type multi-point clamping structure is adopted, and multi-point firm connection of building external hanging formworks can be achieved.

Description

Technical Field

[0001] This utility model is an external formwork for prefabricated steel structure buildings, belonging to the technical field of building external formwork. Background Technology

[0002] Construction formwork is a temporary support structure, manufactured according to design requirements, to shape concrete structures and components according to specified positions and geometric dimensions, maintain their correct position, and bear the self-weight of the formwork and external loads acting on it. Currently, most steel structure building external formwork is assembled using welding or bolt connections, making it inconvenient to install and disassemble, and hindering rapid assembly.

[0003] Publication number CN219528027U mentions a prefabricated steel structure building external formwork. This device facilitates the installation and disassembly of the steel structure building external formwork through a connecting mechanism, enabling rapid assembly of the prefabricated steel structure building external formwork. Furthermore, it allows for installation and disassembly of the prefabricated steel structure building external formwork without the need for other tools. However, the device relies solely on a few connecting blocks to indirectly connect the two formworks, resulting in low strength. There is an urgent need for a prefabricated steel structure building external formwork to address these issues. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an external formwork for prefabricated steel structure buildings to solve the problems mentioned in the background technology. This utility model adopts an erection positioning and gear transmission multi-point snap-fit ​​structure, which can realize a multi-point firm connection of the building external formwork.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an external formwork for prefabricated steel structure buildings, comprising a first external formwork, a second external formwork, an assembly plate, a movable rod, and an anti-detachment rod. The first external formwork is located on the left side of the assembly plate, and the second external formwork is located on the right side of the assembly plate. A stepped base is fixed to the lower end of the assembly plate. Limit plates are fixed to the upper ends of both the left and right sides inside the assembly plate. Springs are installed inside both limit plates, and actuating plates are installed at the opposite outer ends of both springs. Positioning protrusions are installed at the opposite outer ends of both actuating plates. Multiple insertion slots are opened at the opposite inner ends of the first and second external formworks. The assembly plate... A rotating shaft is installed through the upper right end of the body. A first bevel gear is installed at the lower end of the rotating shaft. A threaded shaft is horizontally installed at the upper end of the assembly plate body through a bearing. A second bevel gear is installed in the middle of the threaded shaft. Nut sleeves are fitted on both the left and right ends of the threaded shaft. A moving rod is installed at the lower end of each of the two nut sleeves. Multiple plug-in rods are horizontally fixed on the outer side of each of the two moving rods. Multiple anti-deviation cylinders are fixed on the left and right sides of the assembly plate body. Multiple plug-in rods pass through multiple anti-deviation cylinders. The other end of each plug-in rod is located in multiple plug-in slots. Positioning holes are opened through the connection points of the multiple plug-in rods with the first and second outer templates. Two anti-detachment rods are provided.

[0006] Furthermore, both the lower ends of the first and second external templates are provided with mounting slots on their inner sides, and the upper left and right sides of the step base are respectively located in the two mounting slots.

[0007] Furthermore, the second bevel gear meshes with the first bevel gear.

[0008] Furthermore, the outer left side of the threaded shaft is a forward thread, and the outer right end of the threaded shaft is a reverse thread.

[0009] Furthermore, the two insertion rods are respectively inserted through multiple positioning holes.

[0010] Furthermore, the first and second outer templates each have a positioning groove on their inner upper sides, and the other ends of the two positioning protrusions are respectively inserted into the two positioning grooves.

[0011] The beneficial effects of this utility model are as follows: This utility model provides an external formwork for prefabricated steel structure buildings. Because it incorporates anti-detachment rods, assembly plates, step bases, limiting plates, springs, positioning protrusions, actuating plates, positioning grooves, rotating shafts, first bevel gears, second bevel gears, threaded shafts, nut sleeves, moving rods, anti-deviation cylinders, and plug-in rods, our design improvements and practical use have shown that this device has a reasonable structure and good practicality. It adopts an overlapping positioning and gear-driven multi-point snap-fit ​​structure, which can achieve a multi-point firm connection of the building's external formwork. Furthermore, it is simple to operate and facilitates the rapid installation or disassembly of adjacent building external formwork. Attached Figure Description

[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an external formwork for prefabricated steel structure buildings according to this utility model;

[0014] Figure 2 This is a cross-sectional schematic diagram of an external formwork for a prefabricated steel structure building according to the present invention;

[0015] Figure 3 This is a three-dimensional schematic diagram of the assembly plate of an external formwork for prefabricated steel structure buildings according to the present invention.

[0016] In the diagram: 1-First external template, 2-Second external template, 3-Layering slot, 4-Interlocking slot, 5-Anti-detachment rod, 6-Assembly plate, 7-Step base, 8-Limiting plate, 9-Spring, 10-Positioning protrusion, 11-Actuating plate, 12-Positioning groove, 13-Rotating shaft, 14-First bevel gear, 15-Second bevel gear, 16-Threaded shaft, 17-Nut sleeve, 18-Moving rod, 19-Anti-deviation cylinder, 20-Interlocking rod, 21-Positioning hole. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] Please see Figures 1-3This utility model provides a technical solution: an external formwork for prefabricated steel structure buildings, including a first external formwork 1, a second external formwork 2, an assembly plate 6, a moving rod 18, and an anti-detachment rod 5. The first external formwork 1 is located on the left side of the assembly plate 6, and the second external formwork 2 is located on the right side of the assembly plate 6. A stepped base 7 is fixed to the lower end of the assembly plate 6. Limiting plates 8 are fixed to the upper ends of both the left and right sides inside the assembly plate 6. Springs 9 are installed inside both limiting plates 8. A lever plate 11 is installed at the outer end of each of the two springs 9, and a positioning protrusion 10 is installed at the outer end of each of the two lever plates 11. Multiple insertion slots 4 are opened at the inner ends of the first external formwork 1 and the second external formwork 2. A rotating shaft 13 is installed through the upper right end of the assembly plate 6, and a first bevel gear is installed at the lower end of the rotating shaft 13. 14. A threaded shaft 16 is horizontally mounted on the upper part of the assembly plate 6 via a bearing. A second bevel gear 15 is installed in the middle of the threaded shaft 16. Nut sleeves 17 are fitted on the left and right ends of the threaded shaft 16. Moving rods 18 are installed on the lower ends of the two nut sleeves 17. Multiple plug-in rods 20 are horizontally fixed on the outer sides of the two moving rods 18. Multiple anti-deviation cylinders 19 are fixed on the left and right sides of the assembly plate 6. Multiple plug-in rods 20 pass through multiple anti-deviation cylinders 19. The other ends of multiple plug-in rods 20 are respectively located in multiple plug-in slots 4. Positioning holes 21 are opened through the connection points between multiple plug-in rods 20 and the first outer template 1 and the second outer template 2. Two anti-detachment rods 5 are provided. This design solves the problem of low strength in the original device that only relies on a few connecting blocks to indirectly connect the two templates.

[0019] As the first embodiment of this utility model: Both the lower inner sides of the first outer template 1 and the second outer template 2 are provided with overlapping grooves 3. The upper left and right sides of the stepped base 7 are respectively located within the two overlapping grooves 3. The added stepped base 7 facilitates the overlapping of the lower sides of the first outer template 1 and the second outer template 2. The second bevel gear 15 meshes with the first bevel gear 14. Through the addition of the second bevel gear 15 and the first bevel gear 14, the second bevel gear 15 can be adjusted to mesh and rotate when the first bevel gear 14 rotates. The outer left side of the threaded shaft 16 has a forward-rotating thread, and the outer right end of the threaded shaft 16 has a reverse-rotating thread. By adding the forward-rotating thread on the outer left side of the threaded shaft 16 and the reverse-rotating thread on the outer right end of the threaded shaft 16, the two nut sleeves 17 can only move in opposite directions when the threaded shaft 16 rotates, and cannot move in the same direction.

[0020] Two plug-in rods 20 are respectively inserted into multiple positioning holes 21. By adding two plug-in rods 20, it is ensured that the other ends of the multiple plug-in rods 20 are in multiple plug-in slots 4 without loosening. The upper inner sides of the first outer template 1 and the second outer template 2 are provided with positioning grooves 12. The other ends of two positioning protrusions 10 are respectively inserted into the two positioning grooves 12. By adding two positioning protrusions 10, it is easy to position the first outer template 1 and the second outer template 2.

[0021] As a second embodiment of this utility model: When it is necessary to assemble the first outer template 1 and the second outer template 2, firstly, move the two actuating plates 11 inward, causing the two positioning protrusions 10 to move towards each other and forcing the two springs 9 to compress towards each other. Then, attach the first outer template 1 and the second outer template 2 to the left and right sides of the assembly plate 6 respectively, so that the upper left and right sides of the step base 7 are respectively in the two mounting slots 3. Then, release the two actuating plates 11, and the two springs 9 will return to their original position, which will push the two positioning protrusions 10 to move in opposite directions until the two positioning protrusions 10 are engaged in the two positioning grooves 12, thus completing the positioning of the first outer template 1 and the second outer template 2. Then, turn the rotating shaft 13, and the first bevel gear 14 will be driven to rotate, thereby causing the second bevel gear 15 to be adjusted and rotated as well. The rotation will cause the threaded shaft 16 to rotate. Because the threads on the left and right sides of the threaded shaft 16 are different, when the threaded shaft 16 rotates, it can drive the two nut sleeves 17 to move in opposite directions. (Because the multiple plug rods 20 are located in multiple anti-deviation cylinders 19, when the threaded shaft 16 rotates and drives the two nut sleeves 17 to rotate, the two moving rods 18 limit them, so that when the threaded shaft 16 rotates, the two nut sleeves 17 can only move and will not rotate.) The two nut sleeves 17 moving in opposite directions can drive the two moving rods 18 to move in opposite directions. The two moving rods 18 moving in opposite directions can drive the multiple plug rods 20 to move in opposite directions in the multiple anti-deviation cylinders 19 until the outer sides of the multiple plug rods 20 are respectively inserted into the multiple plug grooves 4. Finally, the two anti-disengagement rods 5 are inserted between the multiple positioning holes 21 to complete the assembly.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0023] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An external formwork for prefabricated steel structure buildings, comprising a first external formwork (1), a second external formwork (2), an assembly panel (6), a movable rod (18), and an anti-detachment rod (5), characterized in that: The first external template (1) is located on the left side of the assembly plate (6), and the second external template (2) is located on the right side of the assembly plate (6). A step base (7) is fixed at the lower end of the assembly plate (6). Limiting plates (8) are fixed at the upper ends of the left and right sides inside the assembly plate (6). Springs (9) are installed in both limiting plates (8). A toggle plate (11) is installed at the outer ends of both springs (9). A positioning protrusion (10) is installed at the outer ends of both toggle plates (11). The first external template (1) and the second external template (2) each have multiple insertion slots (4) at their inner ends. A rotating shaft (13) is installed through the upper right end of the assembly plate (6). A first bevel gear (14) is installed at the lower end of the rotating shaft (13). A threaded shaft (16) is horizontally installed at the upper end of the assembly plate (6) via a bearing. A second bevel gear (15) is installed in the middle of the threaded shaft (16). Nut sleeves (17) are fitted on both the left and right ends of the threaded shaft (16). The lower ends of the two nut sleeves (17) are each fitted with... The assembly plate (6) is equipped with a movable rod (18), and multiple plug-in rods (20) are horizontally fixed on the outer side of each of the two movable rods (18). Multiple anti-deviation cylinders (19) are fixed on the left and right sides of the assembly plate (6). Multiple plug-in rods (20) pass through multiple anti-deviation cylinders (19). The other end of multiple plug-in rods (20) is located in multiple plug-in slots (4). Positioning holes (21) are opened through the connection points of multiple plug-in rods (20) with the first external template (1) and the second external template (2). Two anti-detachment rods (5) are provided.

2. The external formwork for prefabricated steel structure buildings according to claim 1, characterized in that: The lower ends of the first external template (1) and the second external template (2) are provided with mounting slots (3) on their inner sides, and the upper left and right sides of the step base (7) are respectively located in the two mounting slots (3).

3. The external formwork for prefabricated steel structure buildings according to claim 1, characterized in that: The second bevel gear (15) meshes with the first bevel gear (14).

4. The external formwork for prefabricated steel structure buildings according to claim 1, characterized in that: The threaded shaft (16) has a forward thread on the outer left side and a reverse thread on the outer right side.

5. The external formwork for prefabricated steel structure buildings according to claim 1, characterized in that: The two insertion rods (20) are respectively inserted through multiple positioning holes (21).

6. The external formwork for prefabricated steel structure buildings according to claim 1, characterized in that: The first external template (1) and the second external template (2) are provided with positioning grooves (12) on their inner upper sides, and the other ends of the two positioning protrusions (10) are respectively inserted into the two positioning grooves (12).

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