Detachable hanging formwork device for cantilever beam

Abstract

The utility model belongs to construction auxiliary equipment technical field especially relates to cantilever beam side detachable formwork device, including main hoisting shell, the one side fixed mounting of main hoisting shell has a plurality of splices, the upside of splice is equipped with one level avoidance hole, the downside fixed mounting of main hoisting shell has the lower fixed panel, the lower fixed panel, this cantilever beam side detachable formwork device, the lower fixed panel is fixedly installed on the wall that needs to carry out cantilever beam pouring through the multiple anchor rods and is driven in, and needs to be located the upside of lower fixed panel, then the sling on main hoisting shell is installed on the rope peg of upper fixed panel one side, the splice slot of extension hoisting shell one side is inserted along splice stick, and splice is inserted into splice sleeve simultaneously, make one level splice hole and two level splice hole alignment, then the connecting bolt is driven into and is fixed, reached the effect that the formwork device is installed in high altitude detachably, improved the applicability of device.

Description

Technical Field

[0001] This utility model belongs to the field of building engineering technology, and in particular relates to a detachable hanging formwork device for cantilever beams. Background Technology

[0002] A cantilever beam is a reinforced concrete beam with one end fixed to the main structure of a building (such as a wall, column, or frame beam) and the other end extending out of the main structure without direct support. It is a statically determinate structure, and its core function is to transfer the load of components such as balconies, canopies, and corridors to the main structure. It is widely used in residential and commercial buildings. When constructing a cantilever beam, it needs to be formed by pouring cement, and molds are required to assist in the pouring process.

[0003] In the prior art, when pre-setting the mold for cantilever beams, support rods are usually added from the bottom to support the mold to facilitate normal concrete pouring. However, in actual use, if the pouring position of the cantilever beam is high, it is impossible to support it from the bottom with support rods, which leads to difficulties in mold installation. In view of this, we propose a detachable side-mounted formwork device for cantilever beams. Utility Model Content

[0004] The purpose of this invention is to provide a detachable formwork device for the side of a cantilever beam, so as to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a detachable formwork device for the side of a cantilever beam, including a main hoisting shell, a plurality of splicing joints fixedly installed on one side of the main hoisting shell, a primary clearance hole opened on the upper side of the splicing joints, and a lower fixing panel fixedly installed on the lower side of the main hoisting shell. An extended hoisting shell has multiple splicing sleeves fixedly installed at one end for assembling with a splicing joint. The upper side of each splicing sleeve has secondary clearance holes of the same size. Both primary and secondary clearance holes are secured by a single connecting bolt. Primary reinforcing rods are rotatably installed on both sides of the main hoisting shell, with the other end of each rod fixed to one side of the extended hoisting shell by bolts. Secondary reinforcing rods are rotatably installed on both sides of the extended hoisting shell, with the other end of each rod fixed to one side of the main hoisting shell by bolts. The primary and secondary reinforcing rods are connected by reinforcing bolts. Reinforcing components are fixedly installed on the lower sides of both the main hoisting shell and the extended hoisting shell.

[0006] In this technical solution, a lower fixed panel is fixedly installed on the lower side of the main hoisting shell, and four splicing sleeves are fixedly installed at one end of the extended hoisting shell 2 for insertion and splicing with four splicing joints on the main hoisting shell. First, the lower fixed panel is fixed to the building structure using anchor bolts or similar methods. When the mold length needs to be extended, the splicing sleeves of the extended hoisting shell are aligned with the splicing joints of the main hoisting shell and inserted, aligning the clearance holes. Then, connecting bolts are inserted and tightened to complete the rapid connection of the two shells. Primary reinforcing rods are rotatably installed on both sides of the main hoisting shell via rotating shafts, and secondary reinforcing rods are rotatably installed on both sides of the extended hoisting shell 2 via rotating shafts. Connecting bolt holes are opened on both sides of both the main hoisting shell and the extended hoisting shell. The other ends of the primary and secondary reinforcing rods are installed crosswise in the connecting bolt holes, and secondary reinforcement bolts are used in the intersection area for secondary connection reinforcement, thus enhancing the connection stability between the sides of the main hoisting shell and the extended hoisting shell. Multiple extended hoisting shells can be connected sequentially according to the cantilever beam length requirements. The lower fixed panel is fixedly installed on the lower side of the main hoisting shell. Multiple splicing sleeves are fixedly installed at one end of the extended hoisting shell for insertion and splicing with the splicing joints on the main hoisting shell. Through the splicing of the main hoisting shell and the extended hoisting shell, it can flexibly adapt to the casting requirements of cantilever beams of different lengths, and has strong versatility.

[0007] In the above technical solution, the reinforcement component further includes two splicing semi-rings, which are respectively fixedly installed on the lower side of the main hoisting shell and the extension hoisting shell. A semi-circular shaft is fixedly installed on the lower side of the main hoisting shell and the extension hoisting shell. A semi-circular disk is rotatably installed on the semi-circular shaft. The side of the semi-circular disk is attached to the inner wall of the splicing semi-ring. An installation port is opened on the surface of the semi-circular disk, and a quick-release unit is fixedly installed in the installation port.

[0008] In this technical solution, two splicing semi-rings are fixedly installed on the lower sides of the main lifting shell and the extension lifting shell, respectively. A semi-circular shaft is also fixedly installed on the lower side of the main lifting shell and the extension lifting shell, and a semi-circular disk is rotatably mounted on the semi-circular shaft. The side of the semi-circular disk fits against the inner wall of the splicing semi-ring. Each semi-circular disk has an installation opening on its surface, and a quick-release unit is fixedly installed inside the installation opening. When the main lifting shell and the extension lifting shell are connected by the splicing joint and splicing sleeve, the two splicing semi-rings on their lower sides also align to form a complete ring. At this time, the semi-circular disk is rotated from parallel to the splicing direction of the shell to perpendicular to the splicing direction. In the working position, the two semi-circular disks together form a strong annular clamp, tightly clamping the lower part of the shell after docking, greatly enhancing the rigidity and bending resistance of the connection node. The annular clamp structure can effectively resist the huge tension and bending moment generated during concrete pouring, preventing deformation or cracking at the shell connection and ensuring the overall stability of the mold.

[0009] In the above technical solution, the quick-release unit further includes a positioning rod, which is slidably installed in the installation port. The lower sides of the main lifting shell and the extension lifting shell are provided with positioning grooves, which are adapted to the positioning rod. A sealing ring is fixedly installed on the inner wall of the installation port. A limit ring is fixedly installed on the surface of the positioning rod. A return spring is sleeved on the surface of the positioning rod, and one end of the return spring is fixedly connected to the lower side of the limit ring.

[0010] In this technical solution, when the semi-disc is rotated to the working position, the positioning rod automatically pops out and inserts into the positioning slot under the elastic force of the return spring, thereby locking the semi-disc in the current position and preventing it from rotating accidentally. When disassembly is required, simply pull the positioning rod out of the positioning slot manually, and the semi-disc can be rotated to the storage position. The spring-driven pin mechanism realizes automatic and rapid locking of the working position of the semi-disc, which is simple to operate and highly efficient.

[0011] In the above technical solution, furthermore, the lower sides of both the main hoisting shell and the extended hoisting shell are provided with arc-shaped grooves, and the upper sides of both semi-circular disks are fixedly installed with sliders, which fit into the arc-shaped grooves.

[0012] In this technical solution, when the semi-disc rotates around the semi-circular axis, the slider on it slides within the arc-shaped groove. The arc-shaped groove provides precise trajectory guidance for the rotation of the semi-disc, ensuring smooth rotation without deviation or jamming, and accurately guiding the positioning rod above the positioning groove.

[0013] In the above technical solution, furthermore, the upper sides of both the main hoisting shell and the extended hoisting shell are fixedly installed with hoisting ropes, the other end of the hoisting ropes is fixedly installed with rope bolts, and one side of the rope bolts is fixedly installed with an upper fixing panel.

[0014] In this technical solution, during construction, the upper fixed panel is first fixed to the main building structure using anchor bolts or similar methods, positioned higher than the lower fixed panel. Then, the upper ends of the lifting ropes for the main hoisting shell and the extension hoisting shell are attached to corresponding rope bolts. In this way, the weight of the entire formwork hoisting device is primarily borne by the upper suspension system, while the lower fixed panel mainly serves as an auxiliary positioning and anti-overturning element. The upper suspension system bears the main weight of the formwork and concrete, resulting in a reasonable stress distribution, safety, and reliability. Furthermore, the rope connection method is simple and quick, facilitating adjustment and disassembly.

[0015] In the above technical solution, the inner wall of the extended hoisting shell is provided with a sliding groove, and a sealing plate is slidably installed in the sliding groove. The sealing plate is installed on the extended hoisting shell by fixing bolts.

[0016] In this technical solution, a sealing plate needs to be installed at the end of the last extended hoisting shell to accommodate different final lengths. After all the required extended hoisting shells are assembled and the predetermined cantilever length is reached, the sealing plate is inserted into the sliding groove from the end of the extended hoisting shell to seal the end opening of the shell. Then, the fixing bolts are tightened to fix the sealing plate in place and prevent concrete from leaking from the end.

[0017] In the above technical solution, furthermore, a plurality of splicing rods are fixedly installed on one side of the main hoisting shell, and a splicing hole is provided on one side of the extended hoisting shell for inserting the splicing rods. In this technical solution, when splicing the extended hoisting shell to the main hoisting shell, in addition to inserting the splice joint into the splicing sleeve, it is also necessary to align and insert the splicing rod on the main hoisting shell into the splicing hole of the extended hoisting shell. This step is performed before the bolt connection, serving as preliminary centering and positioning to ensure that the subsequent splice joint and splicing sleeve can be aligned smoothly, and the clearance holes can also be accurately aligned. This makes the docking of the two large shells easier and more accurate, especially when working at heights, effectively improving installation efficiency. At the same time, after the splicing rod is inserted into the splicing hole, it can withstand some shear force, working together with the bolts to enhance the shear strength of the connection node.

[0018] The beneficial effects of this utility model are: 1. This detachable suspended formwork device for cantilever beams involves driving and fixing the lower fixed panel into the wall where the cantilever beam needs to be poured using multiple anchor rods. The upper fixed panel is then installed on the wall in the same manner, positioned above the lower fixed panel. The hoisting rope on the main hoisting shell is then attached to a rope bolt on one side of the upper fixed panel. The splicing groove extending from one side of the hoisting shell is inserted along the splicing rod, and the splicing joint is simultaneously inserted into the splicing sleeve, aligning the primary and secondary splicing holes. Connecting bolts are then inserted and secured. Finally, the primary and secondary reinforcing rods are cross-fixed and connected to each other to reinforce the structure, achieving a detachable high-altitude installation of the suspended formwork device and improving its applicability.

[0019] 2. The detachable formwork device on the side of the cantilever beam allows for manual rotation of any one semi-disc, which in turn rotates the other semi-disc, causing both semi-discs to rotate 90° so that they are perpendicular to the splicing direction of the main hoisting shell and the extension hoisting shell. At this point, the positioning rod is aligned with the positioning groove. The elastic force of the return spring drives the limit ring to move, and the limit ring drives the positioning rod to insert into the positioning groove, thus positioning the semi-disc. Finally, one end of the hoisting rope on the extension hoisting shell is installed on the rope bolt for reinforcement and fixation, completing the installation and strengthening the structural strength of the connection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the explosion in this utility model; Figure 3 This is a schematic diagram of the semi-circular disk and related structures in this utility model; Figure 4 This is a schematic diagram of the cross-section of the semi-circular disk in this utility model.

[0021] The markings in the diagram are as follows: 1. Main lifting shell; 2. Extension lifting shell; 3. Sealing plate; 4. Lifting rope; 5. Upper fixing panel; 6. Rope bolt; 7. Lower fixing panel; 8. Connecting bolt; 9. Splicing bar; 10. Splicing joint; 11. Splicing sleeve; 12. Fixing bolt; 13. Splicing half ring; 14. Semi-circular shaft; 15. Semi-circular disc; 16. Arc groove; 17. Positioning groove; 18. Limiting ring; 19. Positioning bar; 20. Sealing ring; 21. Return spring; 22. Sliding block; 23. Primary reinforcing rod; 24. Secondary reinforcing rod; 25. Reinforcing bolt. Detailed Implementation

[0022] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0023] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0024] Example 1: This example provides a detachable formwork device for the side of the cantilever beam, including a main lifting shell 1. Multiple splice joints 10 are fixedly installed on one side of the main lifting shell 1. A first-level clearance hole is opened on the upper side of the splice joint 10. A lower fixing panel 7 is fixedly installed on the lower side of the main lifting shell 1. An extension hoisting shell 2 is provided, with multiple splicing sleeves 11 fixedly installed at one end for splicing with the splicing joint 10. The upper side of each splicing sleeve 11 has secondary clearance holes of the same size. The primary and secondary clearance holes are fixed together by the same connecting bolt 8. Primary reinforcing rods 23 are rotatably installed on both sides of the main hoisting shell. The other end of each primary reinforcing rod 23 is fixedly installed on one side of the extension hoisting shell 2 by bolts. Secondary reinforcing rods 24 are rotatably installed on both sides of the extension hoisting shell 2. The other end of each secondary reinforcing rod 24 is fixedly installed on one side of the main hoisting shell by bolts. The primary and secondary reinforcing rods 23 and 24 are fixedly connected by reinforcing bolts 25. Reinforcing components are fixedly installed on the lower sides of the main hoisting shell 1 and the extension hoisting shell 2.

[0025] The main hoisting shell 1 has a lower fixed panel 7 fixedly installed on its lower side, and four splicing sleeves 11 are fixedly installed at one end of the extension hoisting shell 2 for insertion and splicing with four splicing joints 10 on the main hoisting shell 1. First, the lower fixed panel 7 is fixed to the building structure by means of anchor rods, etc. When it is necessary to extend the mold length, the splicing sleeves 11 of the extension hoisting shell 2 are aligned with the splicing joints 10 of the main hoisting shell 1 and inserted to align the clearance holes. Then, the connecting bolts 8 are inserted and tightened to complete the quick connection of the two shells. The two sides of the main hoisting shell 1 are rotatably installed with primary reinforcing rods 23 via rotating shafts, and the two sides of the extension hoisting shell 2 are rotatably installed with secondary reinforcing rods 24 via rotating shafts. Both sides of the main hoisting shell 1 and the extension hoisting shell 2 have connecting bolt holes. The other ends of the primary reinforcing rods 23 and the secondary reinforcing rods 24 are installed in the connecting bolt holes by bolts crossing each other, and secondary connection reinforcement is carried out in the area where they cross using reinforcing bolts 25. This strengthens the connection stability of the sides of the main hoisting shell 1 and the extension hoisting shell 2. Multiple extended hoisting shells 2 can be connected sequentially according to the length requirements of the cantilever beam. A lower fixed panel 7 is fixedly installed on the lower side of the main hoisting shell 1. Multiple splicing sleeves 11 are fixedly installed at one end of the extended hoisting shell 2 for insertion and splicing with the splicing joints 10 on the main hoisting shell 1. Through the splicing of the main hoisting shell 1 and the extended hoisting shell 2, it can flexibly adapt to the casting requirements of cantilever beams of different lengths, and has strong versatility.

[0026] Example 2: This example provides a detachable formwork device for the side of the cantilever beam. In addition to the technical solutions of the above examples, it also has the following technical features: the reinforcement component includes two splicing semi-rings 13. The two splicing semi-rings 13 are respectively fixedly installed on the lower side of the main lifting shell 1 and the extension lifting shell 2. A semi-circular shaft 14 is fixedly installed on the lower side of the main lifting shell 1 and the extension lifting shell 2. A semi-circular disk 15 is rotatably installed on the semi-circular shaft 14. The side of the semi-circular disk 15 is attached to the inner wall of the splicing semi-ring 13. An installation opening is provided on the surface of the semi-circular disk 15, and a quick-release unit is fixedly installed in the installation opening.

[0027] Two splicing semi-rings 13 are fixedly installed on the lower sides of the main lifting shell 1 and the extension lifting shell 2, respectively. A semi-circular shaft 14 is also fixedly installed on the lower side of the main lifting shell 1 and the extension lifting shell 2. A semi-circular disk 15 is rotatably mounted on the semi-circular shaft 14. The side of the semi-circular disk 15 fits against the inner wall of the splicing semi-rings 13. Each semi-circular disk 15 has an installation opening on its surface, and a quick-release unit is fixedly installed inside the installation opening. When the main lifting shell 1 and the extension lifting shell 2 are connected by the splicing joint 10 and the splicing sleeve 11, the two splicing semi-rings 13 on their lower sides also align to form a complete ring. At this time, the semi-circular disk 15 is rotated from being parallel to the splicing direction of the shell to being perpendicular to the splicing direction. When in the working position, the two semicircular disks 15 together form a strong annular clamp, tightly hugging the lower part of the shell after docking, greatly enhancing the rigidity and bending resistance of the connection node. The annular clamp structure can effectively resist the huge tension and bending moment generated during concrete pouring, prevent deformation or cracking at the shell connection, and ensure the overall stability of the mold.

[0028] Example 3: This example provides a detachable formwork device for the cantilever beam side. In addition to the technical solutions of the above examples, it also has the following technical features: the quick-release unit includes a positioning rod 19, which is slidably installed in the installation port. The lower sides of the main lifting shell 1 and the extension lifting shell 2 are provided with positioning grooves 17, which are adapted to the positioning rod 19. A sealing ring 20 is fixedly installed on the inner wall of the installation port. A limit ring 18 is fixedly installed on the surface of the positioning rod 19. A return spring 21 is sleeved on the surface of the positioning rod 19, and one end of the return spring 21 is fixedly connected to the lower side of the limit ring 18.

[0029] When the semi-disc 15 is rotated to the working position, the positioning rod 19 automatically pops out and inserts into the positioning groove 17 under the elastic force of the return spring 21, thereby locking the semi-disc 15 in the current position and preventing it from rotating accidentally. When disassembly is required, simply pull the positioning rod 19 out of the positioning groove 17 manually, and the semi-disc 15 can be rotated to the storage position. The spring-driven pin mechanism realizes automatic and quick locking of the working position of the semi-disc 15, which is simple to operate and highly efficient.

[0030] Example 4: This example provides a detachable formwork device for the cantilever beam side. In addition to the technical solutions of the above examples, it also has the following technical features: the lower sides of the main hoisting shell 1 and the extension hoisting shell 2 are provided with arc-shaped grooves 16, and the upper sides of the two semi-circular discs 15 are fixedly installed with sliders 22, which fit into the arc-shaped grooves 16.

[0031] When the semi-circular disk 15 rotates around the semi-circular shaft 14, the slider 22 on it slides within the arc-shaped groove 16. The arc-shaped groove 16 provides precise trajectory guidance for the rotation of the semi-circular disk 15, ensuring smooth rotation without deviation or jamming, and accurately guides the positioning rod 19 above the positioning groove 17.

[0032] Example 5: This example provides a detachable formwork device for the cantilever beam side. In addition to the technical solutions of the above examples, it also has the following technical features: the upper sides of the main hoisting shell 1 and the extension hoisting shell 2 are both fixedly installed with hoisting ropes 4, the other end of the hoisting ropes 4 is fixedly installed with rope bolts 6, and one side of the rope bolts 6 is fixedly installed with an upper fixed panel 5.

[0033] During construction, the upper fixed panel 5 is first fixed to the main building structure using anchor bolts or similar methods, positioned higher than the lower fixed panel 7. Then, the upper ends of the lifting ropes 4 of the main hoisting shell 1 and the extension hoisting shell 2 are attached to the corresponding rope bolts 6. In this way, the weight of the entire formwork hoisting device is primarily borne by the upper suspension system, while the lower fixed panel 7 mainly serves as an auxiliary positioning and anti-overturning element. The upper suspension system bears the main weight of the formwork and concrete, ensuring reasonable stress distribution, safety, and reliability. Furthermore, the connection method of the lifting ropes 4 is simple and quick, facilitating adjustment and disassembly.

[0034] Example 6: This example provides a detachable formwork device for the cantilever beam side. In addition to the technical solutions of the above examples, it also has the following technical features: the inner wall of the extended hoisting shell 2 is provided with a sliding groove, and a sealing plate 3 is slidably installed in the sliding groove. The sealing plate 3 is installed on the extended hoisting shell 2 by fixing bolts 12.

[0035] Each of the last extended hoisting shells 2 requires a sealing plate 3 to be installed at its end to accommodate different final lengths. Once all the required extended hoisting shells 2 are assembled and the predetermined cantilever length is reached, the sealing plate 3 is inserted into the sliding groove from the end of the extended hoisting shell 2 to seal the end opening of the shell. Then, the fixing bolts 12 are tightened to secure the sealing plate 3 and prevent concrete from leaking from the end.

[0036] Example 7: This example provides a detachable formwork device for the cantilever beam side. In addition to the technical solutions of the above examples, it also has the following technical features: a plurality of splicing rods 9 are fixedly installed on one side of the main hoisting shell 1, and a splicing hole is provided on one side of the extension hoisting shell 2 for inserting the splicing rods 9.

[0037] When splicing the extension hoisting shell 2 with the main hoisting shell 1, in addition to inserting the splicing joint 10 into the splicing sleeve 11, it is also necessary to align and insert the splicing rod 9 on the main hoisting shell 1 into the splicing hole of the extension hoisting shell 2. This step is performed before the bolt connection, serving as a preliminary centering and positioning step to ensure that the subsequent splicing joint 10 and splicing sleeve 11 can be aligned smoothly, and the clearance holes can also be accurately aligned, making the docking of the two large shells easier and more accurate. Especially when working at height, it can effectively improve installation efficiency. At the same time, after the splicing rod 9 is inserted into the splicing hole, it can withstand some shear force and work together with the bolts to enhance the shear strength of the connection node.

[0038] Working principle: When the device is in use, the lower fixed panel 7 is first driven in and fixedly installed on the wall where the cantilever beam needs to be poured by multiple anchor rods. Then, the upper fixed panel 5 is installed on the wall in the same way, and it needs to be located above the lower fixed panel 7. Then, the hoisting rope 4 on the main hoisting shell 1 is installed on the rope bolt 6 on one side of the upper fixed panel 5 to complete the installation of the main hoisting shell 1. When length splicing is required, first insert the splicing groove on one side of the extension hoisting shell 2 along the splicing rod 9, and simultaneously insert the splicing joint 10 into the splicing sleeve 11, aligning the primary splicing hole with the secondary splicing hole. Then, insert the connecting bolt 8 and fix it in place, completing the initial fixing. When the main hoisting shell 1 and the extension hoisting shell 2 are spliced, the two splicing semi-rings 13 and the corresponding semi-circular discs 15 are also spliced. At this time, the two semi-circular shafts 14 are combined into one shaft. Then, rotate any one of the semi-circular discs 15 by hand. The semi-circular disk 15 drives the other semi-circular disk 15 to rotate, so that the two semi-circular disks 15 rotate 90° and are perpendicular to the splicing direction of the main hoisting shell 1 and the extension hoisting shell 2. At this time, the positioning rod 19 is aligned with the positioning groove 17. The spring force of the return spring 21 drives the limiting ring 18 to move. The limiting ring 18 drives the positioning rod 19 to insert into the positioning groove 17 to position the semi-circular disk 15. Finally, one end of the hoisting rope 4 on the extension hoisting shell 2 is installed on the rope bolt 6 for reinforcement and fixation, and the installation is completed. Following the above method, install the extension hoisting shell 2 in sequence until the cantilever beam reaches the predetermined length. Insert the sealing plate 3 into the inner wall of the extension hoisting shell 2 and fix it with the fixing bolts 12 to complete the installation of the device. Finally, put the mold in sequence for casting.

[0039] The splicing joint 10 on one side of the main hoisting shell 1 and the splicing sleeve 11 at one end of the extension hoisting shell 2 are precisely spliced ​​together. With the fixing effect of the primary and secondary clearance holes and the connecting bolts 8, and the splicing rod 9 on one side of the main hoisting shell 1 and the corresponding splicing hole of the extension hoisting shell 2, dual positioning is achieved. Then, the primary reinforcing rods 23 on both sides of the main hoisting shell and the secondary reinforcing rods 24 on both sides of the extension hoisting shell 2 are arranged crosswise and fixed for a second time by the reinforcing bolts 25. Together with the reinforcement components on the lower side of the main hoisting shell 1 and the extension hoisting shell 2, a comprehensive reinforcement structure is formed, which breaks through the conventional hoisting formwork. The device, relying solely on a single connection method or localized reinforcement technology, not only enables the rapid and detachable splicing of multiple shell sections to flexibly adapt to the casting requirements of cantilever beams of different lengths, but also significantly improves the shear strength, bending stiffness, and overall stability of the splice joints through an integrated design of "positioning-connection-reinforcement". It effectively resists the tension and bending moment generated during concrete pouring, avoids deformation and cracking at the shell connection, and solves the pain points of difficult mold positioning, low installation efficiency, and insufficient stability in high-altitude operations, achieving safe and reliable installation in high-altitude scenarios without bottom support.

[0040] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A detachable formwork device for the side of a cantilever beam, characterized in that, include: The main hoisting shell (1) has multiple splicing joints (10) fixedly installed on one side. The splicing joints (10) have a first-level clearance hole on the upper side. The main hoisting shell (1) has a lower fixed panel (7) fixedly installed on the lower side. An extended hoisting shell (2) is provided with multiple splicing sleeves (11) fixedly installed at one end for splicing with the splicing joint (10). The upper side of the multiple splicing sleeves (11) is provided with secondary clearance holes. The primary clearance holes and the secondary clearance holes are the same size. The primary clearance holes and the secondary clearance holes are fixed by the same connecting bolt (8). The two sides of the main hoisting shell are rotatably installed with primary reinforcing rods (23). The other end of the primary reinforcing rods (23) is fixedly installed on one side of the extended hoisting shell (2) by bolts. The two sides of the extended hoisting shell (2) are rotatably installed with secondary reinforcing rods (24). The other end of the secondary reinforcing rods (24) is fixedly installed on one side of the main hoisting shell by bolts. The primary reinforcing rods (23) and the secondary reinforcing rods (24) are fixedly connected by reinforcing bolts (25). The lower sides of the main hoisting shell (1) and the extended hoisting shell (2) are fixedly installed with reinforcement components.

2. The detachable formwork device for the cantilever beam side according to claim 1, characterized in that, The reinforcement assembly includes two splicing semi-rings (13), which are respectively fixedly installed on the lower side of the main hoisting shell (1) and the extension hoisting shell (2). A semi-circular shaft (14) is fixedly installed on the lower side of the main hoisting shell (1) and the extension hoisting shell (2). A semi-circular disk (15) is rotatably installed on the semi-circular shaft (14). The side of the semi-circular disk (15) is attached to the inner wall of the splicing semi-ring (13). An installation port is opened on the surface of the semi-circular disk (15), and a quick-release unit is fixedly installed in the installation port.

3. The detachable formwork device for the cantilever beam side according to claim 2, characterized in that, The quick-release unit includes a positioning rod (19), which is slidably installed in the installation port. The main hoisting shell (1) and the extension hoisting shell (2) are both provided with positioning grooves (17) on their lower sides. The positioning grooves (17) are adapted to the positioning rod (19). A sealing ring (20) is fixedly installed on the inner wall of the installation port. A limit ring (18) is fixedly installed on the surface of the positioning rod (19). A return spring (21) is sleeved on the surface of the positioning rod (19). One end of the return spring (21) is fixedly connected to the lower side of the limit ring (18).

4. The detachable formwork device for the cantilever beam side according to claim 2, characterized in that, Both the main hoisting shell (1) and the extension hoisting shell (2) have arc-shaped grooves (16) on their lower sides, and sliders (22) are fixedly installed on the upper sides of the two semi-circular disks (15), with the sliders (22) fitting into the arc-shaped grooves (16).

5. The detachable formwork device for the cantilever beam side according to claim 1, characterized in that, The main hoisting shell (1) and the extension hoisting shell (2) are both fixedly installed with hoisting ropes (4), and the other end of the hoisting ropes (4) is fixedly installed with rope bolts (6). The upper fixing panel (5) is fixedly installed on one side of the rope bolts (6).

6. The detachable formwork device for the cantilever beam side according to claim 1, characterized in that, The inner wall of the extended hoisting shell (2) is provided with a sliding groove, and a sealing plate (3) is slidably installed in the sliding groove. The sealing plate (3) is installed on the extended hoisting shell (2) by fixing bolts (12).

7. The detachable formwork device for the cantilever beam side according to claim 1, characterized in that, Multiple splicing rods (9) are fixedly installed on one side of the main hoisting shell (1), and splicing holes are opened on one side of the extension hoisting shell (2) for inserting the splicing rods (9).

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