Combined dismounting type steel hole mouth template device of cantilevered scaffold

Abstract

The utility model relates to building tool technical field, concretely relates to a combined installation and dismounting formula cantilevered scaffold section steel hole mouth form plate device, the utility model solves the problem that the existing cantilevered scaffold hole mouth plugging device is troublesome, and the sealing is not strict, and the pressure is uneven and the adaptability is poor. The utility model discloses a cover plate for the main part, the bottom symmetrical setting guide cavity, the connecting rope that passes through the cavity is connected with the anchor point in the wall body, realizes the cover plate positioning. The central part of cover plate is connected with T extrusion piece through screw thread, and the top handle part is connected with pressure rope symmetrically, and the pressure rope is wound and shortened when rotating handle, and the tension is decomposed into vertical pressure and horizontal tension through threaded transmission, the former makes the cover plate tightly seal the hole mouth, and the latter provides positioning constraint for extrusion piece. The connecting rope and pressure rope all adopt detachable lock catch type connecting piece, and the efficiency and safety of scaffold hole mouth plugging are effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of construction tools technology, specifically to a combined and detachable cantilever scaffolding steel opening formwork device. Background Technology

[0002] In building construction, cantilever scaffolding is widely used in the exterior wall construction of high-rise buildings due to its flexible erection and strong adaptability. Cantilever scaffolding typically requires pre-reserved through-wall openings in the building wall to install steel cantilever beams, which need to be sealed after construction. Traditional methods of sealing openings mainly involve temporarily sealing with wooden or steel plates before pouring concrete. This method has the following technical drawbacks: The sealing quality is difficult to guarantee; traditional methods often cannot ensure the density of the concrete, easily forming voids or honeycombs at the top of the opening, affecting structural strength and waterproofing performance, and the wire left inside the opening is prone to rusting and causing water seepage; the operation is complex and inefficient, requiring multiple people to complete the formwork erection, reinforcement, and dismantling processes, resulting in a long construction period; the stability is insufficient, as the sealing devices lack effective pressure application and positioning mechanisms, making them prone to displacement or deformation during concrete pouring; and the reuse rate is low, with most sealing devices being for single use, leading to material waste and increased construction costs.

[0003] While some improved sealing devices have emerged in the prior art, problems such as uneven pressure application, inaccurate positioning, and complex operation still exist. Especially when dealing with openings of different sizes, existing devices often have poor adaptability and cannot achieve rapid installation and reliable fixation. For example, a combined and detachable cantilevered scaffolding steel opening formwork device, patent number CN219753973U, discloses a combined and detachable cantilevered scaffolding steel opening formwork device, including an outer main cover plate component, an inner main hopper component, legs hinged to the cover plate, legs hinged to the hopper, independent insert plate components, and through-wall bolts pre-embedded around the opening. The legs hinged to the cover plate and the legs hinged to the hopper are aligned with the through-wall bolts by rotation, and the bolts are tightened to fix the main cover plate component on the outside of the opening and the main hopper component on the inside of the opening. After fixing, concrete is poured into the through-wall opening through the hopper and vibrated to compact it. The insert plate is inserted, and excess concrete in the hopper is cleaned out. After the concrete solidifies, the through-wall opening is sealed, and the bolts can be loosened for continued use. This combined, detachable cantilevered scaffold steel opening formwork device effectively solves the problems of lack of practical tools and poor waterproofing effect in sealing through-wall openings. This device requires adjusting the four support bolts one by one, which is cumbersome and makes it difficult to ensure uniform pressure. Furthermore, its sealing relies on the manual insertion of the insert plate, which can easily lead to incomplete pouring at the top of the opening. Summary of the Invention

[0004] The purpose of this invention is to overcome the problems of existing cantilever scaffold opening sealing devices, such as cumbersome operation, poor sealing, uneven pressure, and poor adaptability.

[0005] To achieve the above objectives, the technical approach adopted by this utility model to solve its technical problem is as follows: This device employs an innovative structure with dual-sided cover plates for coordinated sealing, achieving efficient and stable opening closure through mechanical transmission and modular design. The inner cover plate features a top guide hopper whose inclined surface precisely guides the injection of cement and other filling materials, ensuring a tight seal. The outer cover plate seals the opening, with threaded connections at the center of both the inner and outer covers to an extrusion component. The top of the extrusion component is anchored to the wall surface via a pressure rope. When the operator rotates the extrusion component, the pressure rope simultaneously winds up, generating a uniform inclined tension. This tension is mechanically decomposed into vertical pressure and horizontal tension. The vertical pressure acts directly on the cover plate through the extrusion component, ensuring a tight fit against the wall and completing the seal. The horizontal tension provides positioning constraints through the extrusion component, preventing displacement during application and ensuring precise alignment of the cover plate.

[0006] At the bottom of the cover plate, a support structure is installed, consisting of a guide section and connecting ropes. The symmetrical guide section precisely constrains the direction of the connecting ropes through its inclined or curved surface design. The connecting ropes are anchored to the wall surface at an angle from the bottom of the cover plate upwards along the guide section. While supporting the vertical weight of the cover plate, its horizontal constraint force pushes the cover plate to fit tightly against the wall surface. The entire device adopts a modular and adjustable design, and the inclination angle and length of the connecting ropes in the guide section can be flexibly adjusted, enabling quick adaptation to scaffold openings of different specifications, significantly improving construction versatility and installation efficiency.

[0007] To achieve the above objectives, the technical solution adopted by this utility model to solve its technical problem is as follows: Design a modular and detachable cantilever scaffolding steel opening formwork device, the specific scheme of which is as follows: A modular and detachable cantilever scaffolding steel opening formwork device includes a cover plate, characterized in that the cover plate is disposed on the outside of the opening and abuts against the wall surface, and an extrusion member is disposed on one side of the cover plate. The top of the extrusion member is connected to an anchor point on the wall surface through a pressure rope. The extrusion member is configured to be subjected to the tension of the pressure rope and transmit pressure perpendicular to the wall surface to the cover plate.

[0008] Furthermore, the bottom of the cover plate is provided with a support structure, including: There are two guide sections, which are symmetrically arranged on the side wall of the cover plate; There are two connecting ropes, with one end of each rope located at the bottom of the cover plate and the other end passing through the two guide sections and connecting to the adjacent anchor points.

[0009] Furthermore, the two guide sections have guide surfaces arranged symmetrically with respect to the central axis of the cover plate, and the two guide surfaces respectively guide the connecting rope to extend upward to the anchor point on the wall.

[0010] Furthermore, the guide surface of the guide part is an inclined surface or an arc surface, and the connecting rope extends along the guide surface and decomposes the vertical load of the cover plate into pressure perpendicular to the wall surface and horizontal constraint force parallel to the wall surface.

[0011] Furthermore, the cover plate includes: The inner cover plate is located on the inner side of the wall, and its top is provided with an upwardly extending hopper with an inclined guide surface; The outer cover plate is located on the outside of the wall and together with the inner cover plate, forms a closed pouring space.

[0012] The beneficial effects of this utility model are: 1. By using a combination of extrusion parts and pressure ropes, the length of the pressure ropes is adjusted through threaded transmission, converting the tension into pressure perpendicular to the wall surface. This ensures that the cover plate fits tightly against the opening, preventing gaps after sealing that could lead to safety hazards or leaks.

[0013] 2. The bottom guide section, in conjunction with the connecting rope, uses a sloped or curved surface design to decompose the vertical load into vertical pressure and horizontal constraint force, which not only enhances the stability of the cover plate but also avoids shaking or displacement caused by uneven force, ensuring the durability of the sealing effect.

[0014] 3. A hopper with a flow guide surface is installed at the top of the inner cover plate, forming a closed space with the outer cover plate. This facilitates the pouring and diversion of filling materials such as concrete, ensuring a tight seal on the opening. It also simplifies the construction process and improves work efficiency. The overall design balances mechanical performance and ease of construction, providing a reliable solution for sealing scaffolding openings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the inner cover plate side structure of this utility model; Figure 2 This is a schematic diagram of the side structure of the outer cover plate of this utility model; Figure 3 This is a side front view of the inner cover plate of this utility model; Figure 4 for Figure 3 Detailed cross-sectional view along the AA direction; Figure 5 This is an exploded structural diagram of the present invention; Figure 6 This is a perspective view of the inner cover plate.

[0016] The above figures include the following reference numerals: 10. Cover plate; 11. Inner cover plate; 111. Hopper; 12. Outer cover plate; 13. Hollow connecting column; 20. Extruded part; 21. Pressure rope; 30. Guide part; 31. Connecting rope; 40. Anchor point. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments, not all embodiments.

[0018] In the description of this utility model, it should be understood that the terms "front", "rear", "left", "right", "upper", "lower", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] refer to Figure 1-6 This utility model provides a combined and detachable cantilever scaffolding steel opening formwork device, including a cover plate 10, an extrusion member 20, and a support structure. The preferred embodiment of this utility model further illustrates the invention: In specific implementation, the cover plate 10 can be a rectangular structure or other structures, and the material can be wood or metal. In this embodiment, a rectangular structure is selected for further explanation. The contact surface between the cover plate 10 and the wall is coated with a concrete release agent to ensure the demolding effect. A hollow connecting post 13 is provided in the middle of the back of the cover plate 10. The hollow connecting post 13 is provided with threads for connecting with the extrusion member 20.

[0020] The cover plate 10 includes an inner cover plate 11 and an outer cover plate 12. The outer cover plate 12 is an integral structure with dimensions matching the opening, completely covering the opening in the exterior wall during installation. The inner cover plate 11 is two-thirds the height of the outer cover plate 12, and its top is connected to a hopper 111 structure for guiding cement flow, allowing cement to be poured into the opening. The two are made as a single unit. The hopper 111 includes an inclined guide plate and baffles disposed on both sides of the guide plate, with the baffles perpendicular to the wall surface.

[0021] In specific implementation, the support structure at the bottom of the cover plate 10 consists of a guide section 30 and connecting ropes 31. The guide section 30 is a symmetrically shaped cavity at the bottom of the cover plate 10, embedded inside the cover plate. It includes a top surface, a bottom surface, and an inclined guide surface. The remaining sides overlap and connect with the edge of the cover plate 10. The guide surface can be designed as a straight or curved surface according to requirements. Taking the rectangular cover plate 10 in this embodiment as an example, the guide section 30 adopts a right-angled triangular cavity with a straight guide surface. The two cavities are symmetrically distributed along the central axis of the cover plate 10. Two connecting ropes 31 are fixed to the center of the bottom of the cover plate 10, and the other end passes through the guide sections 30 on both sides in sequence, extending obliquely upward along the guide surface. They are connected to the anchor points 40 on both sides of the opening by using commercially available D-belt buckle connectors. The shaped cavity allows the connecting ropes 31 to rotate at a certain angle within it, adapting to most connection angles. One end of the D-belt buckle is fixed to the connecting rope, and the other end is a buckle end with an opening. The opening is designed with a movable locking tongue. Anchor point 40 is an M12 expansion bolt with a metal ring protruding from the wall. During use, align the locking end with the metal ring of the pre-embedded M12 expansion bolt in the wall. The locking tongue automatically engages due to its elastic deformation, quickly connecting the connecting rope to anchor point 40 and maintaining a stable connection even under stress. For disassembly, simply press the unlock button on the end of the locking tongue; the tongue will retract and disengage from the screw groove, allowing easy removal of the locking bolt and separation of the connecting rope from anchor point 40.

[0022] The extrusion component 20 adopts a T-shaped structure design, with the bottom threaded rod precisely engaging with the hollow connecting post 13 of the cover plate 10, and a user-friendly operating handle at the top. Two pressure ropes 21 are symmetrically arranged at the connection between the handle and the threaded rod, and their other ends are also connected to the anchor points 40 on both sides of the opening (sharing anchor points 40 with the connecting rope 31) via adjustable D-belt buckles. When the handle is rotated, the pressure ropes 21 gradually wrap around the threaded rod, and the friction between the threaded rod and the hollow connecting post 13 effectively prevents the pressure ropes from slipping back. As the pressure ropes 21 shorten, the tilting tension generated on the extrusion component 20 continuously increases. This tension is mechanically decomposed into vertical pressure and horizontal tension: the vertical pressure pushes the extrusion component directly against the cover plate, making it tightly adhere to the wall to complete the sealing; the horizontal tension provides positioning constraints for the extrusion component, preventing displacement during the application of force and ensuring precise alignment of the cover plate 10.

[0023] During construction, first install the cover plate 10. After adjusting the cover plate 10 to the appropriate position, use expansion bolts to pass through the D-belt locking buckle on the connecting rope 31 to position the cover plate 10. After the cover plate is installed, apply pressure by rotating the pressing component 20 to make the cover plate fit tightly against the wall. After confirming that the cover plate 10 is installed properly, continuously pour concrete through the opening of the hopper 111, ensuring that the excess concrete in the hopper 111 submerges the opening. Then, vibrate the concrete and wait for it to dry. After the concrete has dried, remove the device. To remove it, rotate the handle in the opposite direction to release the pressure. Clean the holes left in the wall by the expansion bolts, moisten them, and repair them with quick-setting cement mortar. Finally, cut off the excess concrete in the hopper 111.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A modular, detachable cantilever scaffolding steel opening formwork device, comprising a cover plate, characterized in that, The cover plate is set outside the opening and abuts against the wall. An extrusion member (20) is provided on one side of the cover plate. The top of the extrusion member (20) is connected to the anchor point (40) on the wall through the pressure rope (21). The extrusion member (20) is configured to be subjected to the tension of the pressure rope (21) and transmit pressure perpendicular to the wall to the cover plate (10).

2. The combined and detachable cantilever scaffolding steel opening formwork device according to claim 1, characterized in that, The bottom of the cover plate (10) is provided with a support structure, including: There are two guide parts (30), and the two guide parts (30) are symmetrically arranged on the side wall of the cover plate (10); There are two connecting ropes (31), and one end of each connecting rope (31) is located at the bottom of the cover plate (10), and the other end passes through the two guide parts (30) and is connected to the adjacent anchor point (40).

3. The combined and detachable cantilever scaffolding steel opening formwork device according to claim 2, characterized in that, The two guide sections (30) have guide surfaces arranged symmetrically with respect to the central axis of the cover plate (10), and the two guide surfaces respectively guide the connecting rope (31) to the anchor point (40) on the wall.

4. The combined and detachable cantilever scaffolding steel opening formwork device according to claim 3, characterized in that, The guide surface of the guide part (30) is a slope or an arc surface. The connecting rope (31) extends along the guide surface and decomposes the vertical load of the cover plate (10) into pressure perpendicular to the wall and horizontal constraint force parallel to the wall.

5. The combined and detachable cantilever scaffolding steel opening formwork device according to claim 1, characterized in that, Cover plate (10) includes: The inner cover plate (11) is located on the inner side of the wall, and its top is provided with an upwardly extending hopper (111), which has an inclined guide surface; The outer cover plate (12) is set on the outside of the wall and together with the inner cover plate (11) forms a closed pouring space.

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