A narrow concrete structure construction air duct formwork fast supporting system

Abstract

The utility model relates to template support technical field, concretely relates to a narrow concrete structure construction air duct template fast support system, wherein, narrow concrete structure construction air duct template fast support system includes two support units and template structure, two symmetry sets up support unit, the template structure is set up in two support unit top, the support unit includes adjusting component and support component, adjusting component sets up in one side or both sides of support component, support component has the support attitude of unfolding to bear the template structure, and the avoiding attitude of folding to get rid of the template structure, adjusting component is operable to be connected in support component for driving support component conversion between support attitude and avoiding attitude, has solved the technical problem of inconvenient installation and dismounting because of limited operation space when setting up template support system in narrow concrete structure inside.

Description

Technical Field

[0001] This utility model relates to the field of formwork support technology, specifically to a quick-support system for formwork in narrow concrete structure construction ventilation ducts. Background Technology

[0002] In the construction of concrete structures in building engineering, especially in the construction of vertical shafts (such as ventilation ducts, flues, pipe shafts, etc.) or other similar narrow concrete structures, it is usually necessary to set up a support system inside to bear the various loads when the top concrete floor slab is poured. At present, the most traditional and common construction method in the industry is to use coupler-type steel pipe scaffolding or cup-lock scaffolding to be erected on site. Construction workers need to enter the narrow space and connect the individual steel pipes one by one with couplers or clips to build a full-span support frame from bottom to top. Then, the main and secondary joists are installed on the top of the frame, the formwork is laid, and the concrete pouring operation is carried out. However, the most prominent problem with this traditional scaffolding support method when applied to narrow concrete structures is the extremely limited operating space. The internal cross-sectional dimensions of structures such as ventilation ducts and pipe shafts are often very small, sometimes only enough to accommodate one worker. A large amount of materials such as steel pipes and fasteners need to be transported from the pre-reserved openings at the top and moved, adjusted, and positioned within the narrow area. The whole process is cumbersome and inefficient, making it difficult for workers to move around. This not only results in enormous labor intensity but also seriously affects the construction progress. Secondly, the traditional scaffolding erection and dismantling process requires the use of tools to remove clips and fasteners one by one. The process is tedious and time-consuming. Because the components are scattered, each step of erection and subsequent dismantling relies on manual disassembly of clips one by one. In such a limited space, tightening or loosening each fastener is extremely inconvenient. As a result, the formwork erection and dismantling processes occupy a large part of the entire structural construction cycle, which cannot meet the pursuit of efficiency in modern construction.

[0003] Therefore, the inventor proposes a quick-support system for formwork in narrow concrete construction ducts to solve the aforementioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a quick-support system for formwork in construction ventilation ducts in narrow concrete structures, so as to solve the technical problem of inconvenient installation and disassembly when setting up formwork support systems in narrow concrete structures due to limited operating space.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A quick-support formwork system for construction ventilation ducts in narrow concrete structures includes two support units and a formwork structure. The two support units are symmetrically arranged, and the formwork structure is erected on top of the two support units. The support unit includes an adjusting component and a supporting component, wherein the adjusting component is disposed on one or both sides of the supporting component; The supporting member has a supporting posture that unfolds to support the template structure, and a retracting posture that avoids the template structure. The adjustment member is operably connected to the support member and is used to drive the support member to switch between a support posture and an avoidance posture.

[0006] According to the above technical solution, after the duct formwork quick-support system is pushed to the predetermined position, the operator adjusts and extends the adjusting component. The adjusting component, as a power source, directly applies driving force to the supporting component, forcing the supporting component to smoothly change from a retracted, yielding posture to an extended supporting posture. In this posture, the supporting component constructs a stable rigid frame, and the top of the supporting component effectively supports and erects the formwork structure to bear the load of subsequent concrete pouring. After the concrete is poured and reaches the predetermined strength, when demolding is required, the adjusting component is simply operated in reverse. The adjusting component shortens, causing the supporting component to return from the extended supporting posture to the retracted yielding posture, causing the overall outline to shrink and separate from the formwork structure and the initially set concrete structure. This allows the entire quick-support system to be easily moved out of the confined space, thus realizing the rapid erection, efficient dismantling, and repeated use of the formwork support system in confined spaces. This fundamentally solves the technical problem of difficult erection and dismantling of traditional scaffolding systems in confined conditions.

[0007] Furthermore, there are multiple supporting members, and each supporting member is interconnected; The support member at the end is connected to the adjustment member.

[0008] Furthermore, the supporting member includes a first vertical rod, a second vertical rod, a first horizontal rod, and a second horizontal rod. The second vertical rod is hinged to the first vertical rod. One end of the first horizontal rod is connected to the first vertical rod, and the other end of the first horizontal rod is connected to the first vertical rod of the adjacent supporting member. One end of the second horizontal rod is hinged to the second vertical rod, and the other end of the second horizontal rod is hinged to the second vertical rod of the adjacent supporting member.

[0009] Furthermore, the adjusting component includes a third crossbar and an adjusting member. The third crossbar is fixedly connected to the first vertical bar. One end of the adjusting member is hinged to the second crossbar, and the other end of the adjusting member is hinged to the third crossbar. The adjusting member can be extended or shortened.

[0010] Furthermore, the adjusting component includes a sleeve, a telescopic rod, and a hinge seat. The hinge seat is hinged to the third crossbar. The bottom of the sleeve is rotatably connected to the hinge seat. The telescopic rod is threaded inside the sleeve, and the end of the telescopic rod extends out of the sleeve and is hinged to the second crossbar. The outer circumference of the sleeve is provided with friction grooves.

[0011] Furthermore, a first connector and a second connector are provided between the two support units; The first connector includes a plurality of first connecting tubes, the two ends of which are respectively connected to the first crossbars on the two support units; The second connector includes a plurality of second connecting tubes, the two ends of which are respectively connected to the second vertical rods on the two support units.

[0012] Furthermore, the template structure includes several timbers and several template bodies, with each timber correspondingly erected on each of the second vertical poles, and each template body erected between two adjacent timbers.

[0013] Furthermore, a waterproof roll of tape is adhered between two adjacent template bodies.

[0014] Furthermore, each of the first vertical rods is provided with a caster wheel at its bottom, and the caster wheel is a self-locking caster wheel.

[0015] Furthermore, the first vertical rod, the second vertical rod, the first horizontal rod, the second horizontal rod, the first connecting pipe, and the second connecting pipe are all steel pipes.

[0016] The beneficial effects of this utility model are: This invention utilizes a parallelogram linkage structure for the support components, interconnected by a first and second crossbar to form a chain-like linkage mechanism. This allows operators to drive the adjustment component from a single position (i.e., the end) to convert rotational motion into linear motion of the telescopic rod via threaded transmission. This synchronously drives all interconnected support components as a whole, enabling smooth and precise transitions between a retracted, yielding posture and an extended, supporting posture. It simplifies the cumbersome, individual installation and dismantling of traditional scaffolding into a single, convenient linear adjustment action, fundamentally overcoming the inconvenience of working in confined spaces. Formwork erection and dismantling speeds are increased by orders of magnitude, while significantly reducing labor intensity.

[0017] This invention connects two support units via a first and second connecting pipe, rigidly linking the two independent units into a single frame. This not only significantly enhances the overall stability and lateral displacement resistance of the system under pouring loads, but more importantly, ensures absolute synchronicity of the deformation of the support components on both sides, preventing jamming of the formwork structure or uneven concrete slab thickness caused by asynchronous support. Simultaneously, the bottom casters and self-locking device allow the entire system to be easily moved to the work position and reliably fixed, while the waterproof tape at the joints of the formwork body effectively prevents grout leakage, ensuring the quality of concrete forming. The combination of these measures allows this quick-support system to achieve stability, safety, and construction quality that are difficult to attain with traditional methods, while simultaneously pursuing efficiency.

[0018] Other advantages, objectives, and features of this application will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from practice of this application. The objectives and other advantages of this application may be realized and obtained through the detailed embodiments described below. Attached Figure Description

[0019] Figure 1 This is a frontal view of the overall quick-support formwork system for ventilation ducts in narrow concrete structures. Figure 2 This utility model relates to a quick-support system for formwork in narrow concrete structure construction ventilation ducts. Figure 1 A schematic diagram of a partial structure; Figure 3 This is a schematic diagram of the quick-support system for formwork in narrow concrete structure construction ducts switching to an avoidance posture. Figure 4 This is a cross-sectional structural schematic diagram of the adjusting component in the quick-support system for formwork in narrow concrete structure construction ventilation ducts of this utility model.

[0020] The components include: support unit 1, adjustment component 11, third horizontal bar 111, adjustment piece 112, sleeve 1121, telescopic rod 1122, hinge seat 1123, support component 12, first vertical bar 121, second vertical bar 122, first horizontal bar 123, second horizontal bar 124, template structure 2, timber 21, template body 22, waterproof roll 23, first connecting pipe 31, second connecting pipe 32, and caster wheel 4. Detailed Implementation

[0021] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0022] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0023] This embodiment proposes a quick-support formwork system for construction ventilation ducts in narrow concrete structures, such as... Figures 1 to 4 As shown, the device includes two support units 1 and a template structure 2. The two support units 1 are symmetrically arranged, and the template structure 2 is erected above the two support units 1. Each support unit 1 includes an adjusting member 11 and a supporting member 12. The adjusting member 11 is located on one or both sides of the supporting member 12. In this embodiment, it is preferable that there is one adjusting member 11, which is located on the left side of the supporting member 12. The supporting member 12 has an unfolded supporting posture to support the template structure 2 (e.g., Figure 1 and Figure 2 As shown), and the avoidance posture of retracting to detach from template structure 2 (as shown). Figure 3 (as shown); the adjusting member 11 is operably connected to the supporting member 12 for driving the supporting member 12 to switch between a supporting posture and an avoidance posture.

[0024] In this embodiment, after pushing the duct formwork quick-support system to the predetermined position, the operator adjusts and extends the adjusting member 11. The extension of the adjusting member 11 directly acts on the supporting member 12, forcing the supporting member 12 to smoothly transition from a retracted, yielding posture to an extended supporting posture. In the supporting posture, the supporting member 12 constructs a stable rigid frame, and the top of the supporting member 12 effectively supports and erects the formwork structure 2 to facilitate bearing the load of subsequent concrete pouring. After the concrete pouring is completed, forming the floor slab concrete structure and reaching the predetermined strength, when demolding is required, it is only necessary to reverse the adjustment of the adjusting member 11 to shorten it, thereby causing the supporting member 12 to return from the extended supporting posture to the retracted yielding posture. Figure 2 Turn into Figure 1 This allows the overall outline of the quick-support system to shrink and separate from the formwork structure 2 and the initially set concrete structure, thus enabling the entire quick-support system to be easily moved out of the confined space. This achieves the rapid erection, efficient dismantling, and repeated use of the formwork support system in confined spaces, fundamentally solving the technical problem of difficult erection and dismantling of traditional scaffolding systems in confined working conditions.

[0025] In a preferred embodiment, there are multiple support members 12, and each support member 12 is interconnected. Among them, the support member 12 located on the leftmost part is connected to the adjustment member 11. The support member 12 includes a first vertical rod 121, a second vertical rod 122, a first horizontal rod 123, and a second horizontal rod 124. The second vertical rod 122 is hinged to the first vertical rod 121. The left end of the first horizontal rod 123 is fixedly connected to the first vertical rod 121, and the right end of the first horizontal rod 123 is fixedly connected to the first vertical rod 121 of the adjacent support member 12. The left end of the second horizontal rod 124 is hinged to the second vertical rod 122, and the right end of the second horizontal rod 124 is hinged to the second vertical rod 122 of the adjacent support member 12.

[0026] In this embodiment, when the operator drives the adjustment component 11, the pushing and pulling force generated by the adjustment component 11 will directly act on the support component 12 on the left. Since the various support components 12 are connected by the first crossbar 123 and the second crossbar 124 to form a chain linkage mechanism, the power acting on the end support component 12 will be transmitted to the subsequent support components 12 in sequence through the rod structure. Thus, the multiple support components 12, like a parallelogram linkage group, can perform coordinated and synchronous shape transformation as a whole, and switch between the retracted avoidance posture and the extended support posture. This integrates multiple independent support units 1 into a unified and synchronously deformable support surface. Only one adjustment point needs to be controlled to control the posture of the entire support surface, realizing the rapid erection and dismantling of large-area support with the simplest operation.

[0027] In a preferred embodiment, the adjusting member 11 includes two third horizontal bars 111 and two adjusting members 112. The third horizontal bars 111 are fixedly connected to the first vertical bar 121. One end of the adjusting member 112 is hinged to the second horizontal bar 124, and the other end of the adjusting member 112 is hinged to the third horizontal bar 111. The adjusting member 112 can be extended or shortened. Further, the adjusting member 112 includes a sleeve 1121, a telescopic rod 1122, and a hinge seat 1123. The hinge seat 1123 is hinged to the third horizontal bar 111. The bottom of the sleeve 1121 is rotatably connected to the hinge seat 1123. The telescopic rod 1122 is threaded inside the sleeve 1121, and the end of the telescopic rod 1122 extends out of the sleeve 1121 and is hinged to the second horizontal bar 124. Friction grooves are formed on the outer periphery of the sleeve 1121. The purpose of forming friction grooves is to increase contact friction.

[0028] In this embodiment, the operator holds and rotates the sleeve 1121 with friction grooves. Since the telescopic rod 1122 is installed inside the sleeve 1121 via a threaded joint, and the end of the telescopic rod 1122 is hinged to the second crossbar 124, thus restricting its rotational freedom, the rotation of the sleeve 1121 is converted into linear motion of the telescopic rod 1122 relative to the sleeve 1121, thereby achieving the extension or shortening of the overall length of the adjusting member 112. When it is necessary to unfold the supporting member 12, the operator rotates the sleeve 1121 forward, driving the telescopic rod 1122 to unscrew from the sleeve 1121. The length of the adjusting member 112 increases, and the resulting thrust acts on the second crossbar 124 and the fixed first crossbar 124 through the hinge points at both ends. The three horizontal bars 111 exert a thrust that forces the second vertical bar 122 to rotate upwards around its hinge point with the first vertical bar 121, thereby driving the entire support component 12 to smoothly transition from a retracted posture to a stable extended support posture. Conversely, when demolding is required, the operator rotates the sleeve 1121 in the opposite direction, causing the telescopic rod 1122 to screw into the sleeve 1121. The length of the adjusting piece 112 shortens, thereby pulling the second horizontal bar 124 and forcing the second vertical bar 122 to rotate downwards, causing the entire support component 12 to synchronously retract to a retracted, avoidance posture. This allows the operator to efficiently and effortlessly control the shape transformation of the entire support system with only a simple rotation operation in a single position, facilitating the needs of operations in confined spaces.

[0029] In a preferred embodiment, a first connector and a second connector are provided between the two support units 1; the first connector includes a plurality of first connecting pipes 31, the two ends of which are respectively connected to the first horizontal bar 123 on the two support units 1; the second connector includes a plurality of second connecting pipes 32, the two ends of which are respectively connected to the second vertical bar 122 on the two support units 1. When the two support units 1 are connected to each other through the first connector and the second connector, the first connecting pipe 31 rigidly connects the first horizontal bars 123 of the two support units 1, forming a stable rigid frame in the horizontal direction. This greatly enhances the integrity and anti-lateral displacement ability of the entire support system when bearing concrete loads, and prevents the two support units 1 from relative displacement or overturning due to uneven force. At the same time, the second connecting pipe connects the second vertical bars 122 of the two support units 1, further strengthening the stability of the structure. This ensures that when the support members 12 on both sides are transformed by the adjusting member 11, the second vertical bars 122 can achieve precise synchronous movement. That is, when the adjusting member 11 drives the second vertical bar 122 on one side to rotate, it is immediately transmitted to the second vertical bar 122 on the other side through the second connecting pipe, forcing the two support units 1 to expand or contract with the same rhythm and amplitude. The first connector and the second connector ensure synchronous coordination during dynamic deformation. Together, they integrate the two independent support units 1 into a whole support platform with reasonable force, unified movement, and safety and reliability.

[0030] In a preferred embodiment, the template structure 2 includes several timbers 21 and several template bodies 22. Each timber 21 is erected on each second vertical bar 122, and each template body 22 is erected between two adjacent timbers 21. A waterproof roll tape 23 is glued between two adjacent template bodies 22.

[0031] After the second vertical bar 122 of the support unit 1 is extended to the supporting position, the construction workers erect several wooden beams 21 as main joists on the top of the second vertical bars 122 of the support units 1 on both sides. These wooden beams 21 form the direct foundation for supporting the formwork body 22. Subsequently, multiple formwork bodies 22 are laid sequentially between adjacent wooden beams 21, thereby quickly assembling a complete and flat floor slab bottom formwork working surface. To ensure that the concrete slurry does not leak from the joints of the formwork during the pouring process, a layer of concrete is installed above the joints of two adjacent formwork bodies 22. The formwork is covered with waterproof roll tape 23, which can effectively seal tiny gaps and prevent grout leakage to ensure the flatness and appearance quality of the bottom surface of the concrete floor slab. After the concrete is poured and solidified, when the formwork is removed, since the formwork body 22 is simply erected on the wooden beam 21 without rigid fixation, when it is converted to an avoidance posture, the wooden beam 21 naturally detaches, and the formwork body 22 can be directly removed in sections to achieve demolding. This realizes the rapid and non-destructive separation of the formwork structure 2 from the support system, which is particularly suitable for assembly line operations in narrow spaces.

[0032] As the preferred implementation method, the first vertical bar 121, the second vertical bar 122, the first horizontal bar 123, the second horizontal bar 124, the first connecting pipe 31, and the second connecting pipe are all steel pipes, with sufficient materials and convenient for use in the construction site environment.

[0033] In a preferred embodiment, each of the first vertical rods 121 is equipped with a caster wheel 4 at its bottom. The caster wheel 4 is a self-locking caster wheel. The operator can use the caster wheel 4 installed at the bottom of each of the first vertical rods 121 to push the entire formwork system to the preset construction position in the confined space. After reaching the predetermined position, the operator immediately locks the self-locking function of one, two or more caster wheels 4, providing a reliable fixing point for the entire movable system and preventing the system from rolling accidentally during the subsequent concrete pouring process. After the concrete is poured and fully cured to reach the demolding strength, the operator releases the self-locking of all caster wheels 4 after switching to the avoidance posture. Then, by pulling the connecting piece or support unit 1, the operator uses the flexible steering characteristics of the caster wheel 4 to smoothly pull the entire formwork system out from under the formed concrete structure. This realizes the positioning, support and rapid deployment of the support formwork system in the confined space, greatly improving construction efficiency and reducing labor intensity. The structure is compact and highly practical.

[0034] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model.

Claims

1. A quick-support formwork system for construction ventilation ducts in narrow concrete structures, characterized in that, include: Two support units (1) and a template structure (2), the two support units (1) are symmetrically arranged, and the template structure (2) is erected on top of the two support units (1); The support unit (1) includes an adjustment member (11) and a support member (12), wherein the adjustment member (11) is disposed on one or both sides of the support member (12); The support member (12) has a support posture that unfolds to support the template structure (2) and a avoidance posture that retracts to detach from the template structure (2); The adjustment member (11) is operably connected to the support member (12) for driving the support member (12) to switch between a support posture and an avoidance posture.

2. The quick-support formwork system for construction ventilation ducts in narrow concrete structures according to claim 1, characterized in that: The number of the support members (12) is multiple, and the support members (12) are interconnected; The support member (12) located at the end is connected to the adjustment member (11).

3. The quick-support formwork system for narrow concrete structure construction ventilation ducts according to claim 2, characterized in that: The support member (12) includes a first vertical rod (121), a second vertical rod (122), a first horizontal rod (123), and a second horizontal rod (124). The second vertical rod (122) is hinged to the first vertical rod (121). One end of the first horizontal rod (123) is connected to the first vertical rod (121), and the other end of the first horizontal rod (123) is connected to the first vertical rod (121) of the adjacent support member (12). One end of the second horizontal rod (124) is hinged to the second vertical rod (122), and the other end of the second horizontal rod (124) is hinged to the second vertical rod (122) of the adjacent support member (12).

4. The quick-support formwork system for narrow concrete structure construction ventilation ducts according to claim 3, characterized in that: The adjusting member (11) includes a third horizontal bar (111) and an adjusting member (112). The third horizontal bar (111) is fixedly connected to the first vertical bar (121). One end of the adjusting member (112) is hinged to the second horizontal bar (124), and the other end of the adjusting member (112) is hinged to the third horizontal bar (111). The adjusting member (112) can be extended or shortened.

5. The quick-support formwork system for narrow concrete structure construction ventilation ducts according to claim 4, characterized in that: The adjusting component (112) includes a sleeve (1121), a telescopic rod (1122), and a hinge seat (1123). The hinge seat (1123) is hinged to the third crossbar (111). The bottom of the sleeve (1121) is rotatably connected to the hinge seat (1123). The telescopic rod (1122) is threaded inside the sleeve (1121), and the end of the telescopic rod (1122) extends out of the sleeve (1121) and is hinged to the second crossbar (124). The outer periphery of the sleeve (1121) is provided with friction grooves.

6. The quick-support formwork system for construction ventilation ducts in narrow concrete structures according to claim 5, characterized in that: A first connector and a second connector are provided between the two support units (1); The first connector includes a plurality of first connecting tubes (31), and the two ends of the first connecting tubes (31) are respectively connected to the first crossbars (123) on the two support units (1); The second connector includes a plurality of second connecting tubes (32), the two ends of which are respectively connected to the second vertical rods (122) on the two support units (1).

7. The quick-support formwork system for narrow concrete structure construction ventilation ducts according to claim 6, characterized in that: The template structure (2) includes several timbers (21) and several template bodies (22). Each timber (21) is erected on each of the second vertical poles (122), and each template body (22) is erected between two adjacent timbers (21).

8. The quick-support formwork system for narrow concrete structure construction ventilation ducts according to claim 7, characterized in that: A waterproof roll tape (23) is adhered between two adjacent template bodies (22).

9. The quick-support formwork system for construction ventilation ducts in narrow concrete structures according to claim 8, characterized in that: Each of the first vertical rods (121) is provided with a caster wheel (4) at its bottom, and the caster wheel (4) is a self-locking caster wheel.

10. The quick-support formwork system for narrow concrete structure construction ventilation ducts according to claim 8, characterized in that: The first vertical bar (121), the second vertical bar (122), the first horizontal bar (123), the second horizontal bar (124), the first connecting pipe (31), and the second connecting pipe (32) are all steel pipes.

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