A rod chain combination assembly for formwork reinforcement

Abstract

The utility model discloses a rod chain combination subassembly for formwork reinforcement belongs to formwork construction technical field, including anchor rod and chain. Anchor rod includes the first cooperation department in one end. The chain includes the second cooperation department of detachable connection with the first cooperation department in one end. Through the first cooperation department of anchor rod and the second cooperation department of chain form detachable connection, and anchor rod is fixed in prefabricated outer wall board side, and chain extends to inside formwork and is connected with formwork system, forms segmented detachable type through tie -up structure, and only needs to separate anchor rod and chain after form removal, avoids the exposed cutting demand of traditional integral through type screw rod. Chain and anchor rod cooperate after in the state of suspension before formwork, and the assembly will not extend and appear the pouring structure of pouring layer, can save a large number of construction platform space. And the assembly is hidden in the steel coil cage before formwork, and the redundant section of chain is still in the state of suspension after formwork, significantly improves construction safety.

Description

Technical Field

[0001] This utility model belongs to the field of formwork construction technology, specifically a rod and chain assembly for formwork reinforcement. Background Technology

[0002] In the construction of prefabricated building exterior walls, a structural form combining precast exterior wall panels and cast-in-place layers is commonly adopted. The precast exterior wall panels serve as permanent external formwork, requiring connecting components to form an integral pouring space with the inner formwork system. In this construction process, tie rods, as key connecting components, play a crucial role in balancing the lateral pressure of the poured concrete, controlling the dimensional accuracy of the structure, and ensuring the stability of the formwork system.

[0003] The commonly used traditional construction method involves installing precast exterior wall panels and inner formwork, then securing them bidirectionally with through-type tie rods. After the cast-in-place concrete reaches the demolding strength and the formwork is removed, the exposed tie rod sections must be cut off using cutting equipment. Traditional tie rod cutting requires manual operation using a handheld angle grinder, which significantly reduces the construction progress.

[0004] Patent CN204960321U discloses a construction structure using a two-section screw system. The system employs a split-type dual-screw system, where the first screw is a double-ended screw and the second screw is a fully threaded screw. The first screw connects the precast exterior wall panel to the cast-in-place layer, and the second screw connects the cast-in-place layer to the inner formwork. The first and second screws are connected by a hexagonal nut, which is embedded in a frustum-shaped rubber sleeve that isolates the cast-in-place layer. The second screw, located outside the formwork, is secured to the formwork using square timber, steel pipes, U-shaped clips, and nuts on the outside of the formwork.

[0005] In the above scheme, after the formwork is removed, the first threaded rod is reserved to connect the precast exterior wall panel to the cast-in-place layer, and the second threaded rod can be removed from the cast-in-place layer and reused, simplifying the construction process. However, before the formwork is installed, all the second threaded rods and the first threaded rods need to be assembled in advance. The protruding parts not only occupy a lot of construction space, but also pose a certain threat to the safety of construction workers, with risks of collision, scratches and punctures. Summary of the Invention

[0006] The purpose of this invention is to provide a rod and chain assembly for template reinforcement, so as to solve the problems mentioned in the prior art.

[0007] A rod-chain assembly for template reinforcement is provided, comprising:

[0008] An anchor bolt, which includes a first mating part located at one end;

[0009] A chain, which includes a second mating portion located at one end that is detachably connected to a first mating portion.

[0010] Furthermore, it also includes a sleeve, which is fitted around the connection between the anchor rod and the chain. The sleeve wraps around the connection node between the anchor rod and the chain, forming a physical isolation layer to prevent concrete slurry from seeping into the connection and causing adhesion, thus ensuring easy disassembly.

[0011] Furthermore, the end of the sleeve that contacts the template is made of a flexible material. When the flexible end of the sleeve contacts the template, it undergoes elastic deformation, adapting to the unevenness of the template surface, improving sealing performance, and preventing grout leakage.

[0012] Furthermore, the end of the sleeve near the chain has a flared structure with a gradually increasing inner diameter. This flared structure forms a tapered guide surface, allowing the sleeve to expand uniformly during adaptive deformation in contact with the template, ensuring a sealing effect. In addition, it provides space for chain oscillation, reducing the precision requirements for the opening position during template installation and alignment.

[0013] Furthermore, the first and second mating parts are threadedly connected. The threaded connection achieves a tight, secure engagement, provides reliable tensile strength, and meets the lateral pressure requirements of the concrete. The self-locking nature of the threads prevents loosening and ensures construction stability.

[0014] Furthermore, the first and second mating parts are connected by a snap-fit ​​mechanism. This snap-fit ​​connection utilizes a quick-connect mechanism to enable rapid assembly and disassembly, thereby improving construction efficiency.

[0015] Furthermore, it also includes a tensioning element used to tension the chain relative to the formwork. The tensioning element tightens the chain through mechanical action, transferring the tension force of the chain to the formwork, enabling the formwork to resist the lateral pressure of the concrete.

[0016] Furthermore, the tensioning member includes a U-shaped clip and a pin, the pin being positioned between the chain and the U-shaped clip. The U-shaped clip and the pin cooperate to form a limiting structure for the chain, and the pin can pass through all the interconnected rings along the length of the chain for limiting, adapting to the design dimensions of different cast-in-place layers.

[0017] Furthermore, the side of the mountain-shaped clip that engages with the pin is recessed inward around the through hole of the chain. This recessed structure forms a pin receiving groove, which laterally limits the pin, prevents the pin from accidentally falling off, and improves the stability of the template support structure.

[0018] Furthermore, the snap-fit ​​surface of the mountain-shaped clip is provided with an elastic pad. The elastic pad can produce slight deformation, further improving the adaptability of the pin and chain link engagement and ensuring sufficient force between the pin and the chain.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. A detachable connection is formed by the first mating part of the anchor rod and the second mating part of the chain. The anchor rod is fixed to the side of the precast exterior wall panel, and the chain extends to the inner template and connects with the template system, forming a segmented detachable through-connection structure. After demolding, only the anchor rod and the chain need to be separated, avoiding the need for exposed cutting of traditional integrated through-type screw rods.

[0021] 2. After the chain and anchor rod are used together, they are suspended before the formwork is erected. The components will not extend into the pouring structure of the pouring layer, which can save a lot of construction platform space. Moreover, the components are hidden in the reinforcement cage before the formwork is erected, and the redundant section of the chain is still suspended after the formwork is erected, which significantly improves construction safety. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this drawing or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this drawing. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram A shows the overall structure of the rod and chain assembly used for template reinforcement;

[0024] Figure 2 Schematic diagram B shows the overall structure of the rod and chain assembly used for template reinforcement;

[0025] Figure 3 This is a diagram showing the usage status of the rod and chain assembly used for template reinforcement.

[0026] In the diagram: 1. Anchor bolt; 11. First mating part; 2. Chain; 21. Second mating part; 3. Sleeve; 4. Tensioning component; 41. Mountain-shaped clamp; 42. Pin. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0028] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0029] However, there may be instances where unnecessary detailed descriptions are omitted. For example, detailed descriptions of well-known matters or repetitive descriptions of essentially the same structures may be omitted. This is to avoid unnecessarily lengthy descriptions and to facilitate understanding by those skilled in the art. Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this application and are not intended to limit the subject matter of the claims.

[0030] Please see Figure 1-3 As shown in the embodiment of this utility model, a rod-chain assembly for template reinforcement includes an anchor rod 1 and a chain 2. The anchor rod 1 includes a first mating part 11 located at one end. The chain 2 includes a second mating part 21 located at one end, which is detachably connected to the first mating part 11.

[0031] The first mating part 11 of the anchor rod 1 and the second mating part 21 of the chain 2 are detachably connected to form a tie unit. One end of the anchor rod 1 is pre-embedded in the side of the precast exterior wall panel, and one end of the chain 2, after mating with the anchor rod 1, extends to the inner formwork and connects to the formwork system. Before formwork erection, the chain 2 is in a naturally drooping state, and the entire assembly is housed in the steel cage between the precast slab and the formwork, without occupying external construction space. During the formwork removal stage, the connection node between the anchor rod 1 and the chain 2 is separated, and the chain 2 is removed along with the inner formwork, leaving no exposed metal residue.

[0032] The suspended design allows the components to be completely hidden before formwork erection, reducing space occupation compared to traditional outward-protruding bolts and lowering the required width of construction passageways. Eliminating protruding rigid components before formwork erection reduces the rate of worker collisions and scratches. No bolt cutting is required after formwork removal, improving construction efficiency.

[0033] In one embodiment, see Figure 1As shown, the first mating part 11 and the second mating part 21 are threadedly connected. The first mating part 11 is formed by the external thread of the anchor rod 1, and the second mating part 21 is composed of the end screw of the chain 2. The screw has an internal thread, which can be threadedly connected to the external thread of the first mating part 11. Alternatively, the first mating part 11 has an internal thread, and the second mating part 21 is composed of the external thread of the end screw of the chain 2, which can be threadedly connected to the internal thread of the first mating part 11. Alternatively, both the first mating part 11 and the second mating part 21 are composed of screws with external threads, and are connected by a nut. The form of threaded connection is not limited here.

[0034] In one embodiment, see Figure 2 As shown, the first mating part 11 and the second mating part 21 are connected by a snap-fit. The snap-fit ​​of the second mating part 21 is a snap-fit ​​with a movable part, which is closed by a torsion spring. The snap-fit ​​is connected to the end of the chain 2 ring. The first mating part 11 is a collar set at the end of the anchor rod 1, and is connected to the collar by the snap-fit ​​of the second mating part 21. This connection method can greatly improve construction efficiency.

[0035] The sleeve 3 forms a protective layer at the connection node between the anchor rod 1 and the chain 2. During the pouring process, the sleeve 3 isolates the cement slurry penetration path, ensuring that there is no adhesive resistance between the first mating part 11 and the second mating part 21 when the formwork is removed.

[0036] When the flexible end of the sleeve 3 is subjected to pressure during template installation, it undergoes radial expansion deformation, and after deformation, it forms a surface contact sealing area with the template surface.

[0037] The end of the sleeve 3 near the chain 2 has a flared structure with a gradually increasing inner diameter. The flared inner cavity provides the chain 2 with a certain degree of deflection freedom, allowing the axis of the anchor rod 1 to have a certain deviation from the template hole position, thus reducing the probability of template hole position misalignment.

[0038] Please see Figure 3 As shown, the assembly also includes a tensioning member 4, which is used to tension the chain 2 relative to the formwork. The tensioning member 4 tightens the chain 2 through mechanical action, transferring the tension force of the chain 2 to the formwork, so that the formwork resists the lateral pressure of the concrete.

[0039] Specifically, the tensioning component 4 includes a mountain-shaped clamp 41 and a pin 42. After the chain 2 is engaged with the anchor rod 1, the other end of the chain 2 is passed through the template, the timber, and the through hole of the mountain-shaped clamp 41 in sequence. The steel pipe is clamped between the mountain-shaped clamp 41 and the timber. Then, the pin 42 is inserted into the ring that aligns the chain 2 with the through hole of the mountain-shaped clamp 41 to maintain the tension.

[0040] An arc-shaped recessed groove is machined around the through hole on the side wall of the mountain-shaped card 41 to form a receiving space for the pin 42. After the pin 42 is inserted into the chain 2 ring, the pin 42 sinks into the recessed groove as a whole, which limits the pin 42 and prevents it from falling off during concrete pouring and solidification.

[0041] The snap-fit ​​surface of the mountain-shaped clip 41 is provided with an elastic pad. The elastic pad can produce slight deformation, which further improves the adaptability of the pin 42 and the chain 2 ring engagement. When the chain 2 ring is not aligned with the surface of the mountain-shaped clip 41, the mountain-shaped clip 41 can be appropriately pressed to deform the elastic pad, ensuring that the pin 42 can be inserted smoothly and that there is sufficient force between the pin 42 and the chain 2.

[0042] It should be noted that this application is not limited to the above-described embodiments. The above embodiments are merely examples, and any embodiments with the same structure and effect as the technical concept within the scope of this application are included in the technical scope of this application. Furthermore, various modifications that can be conceived by those skilled in the art to the embodiments, and other ways of constructing by combining some of the constituent elements of the embodiments, without departing from the spirit of this application, are also included in the scope of this application.

Claims

1. A rod-chain assembly for template reinforcement, characterized in that, include: An anchor bolt (1) includes a first mating part (11) located at one end. The chain (2) includes a second mating part (21) located at one end that is detachably connected to the first mating part (11).

2. The rod-chain assembly for template reinforcement according to claim 1, characterized in that, It also includes a sleeve (3), which is fitted around the connection between the anchor rod (1) and the chain (2).

3. A rod-chain assembly for template reinforcement according to claim 2, characterized in that, The end of the sleeve (3) that contacts the template is made of a flexible material.

4. A rod-chain assembly for template reinforcement according to claim 2, characterized in that, The sleeve (3) has a flared structure with a gradually increasing inner diameter at the end near the chain (2).

5. A rod-chain assembly for template reinforcement according to claim 1, characterized in that, The first mating part (11) and the second mating part (21) are threaded together.

6. A rod-chain assembly for template reinforcement according to claim 1, characterized in that, The first mating part (11) and the second mating part (21) are connected by a snap fastener.

7. A rod-chain assembly for template reinforcement according to claim 1, characterized in that, It also includes a tensioning element (4) for tensioning the chain (2) relative to the template.

8. A rod-chain assembly for template reinforcement according to claim 7, characterized in that, The tensioning member (4) includes a mountain-shaped clip (41) and a pin (42), the pin (42) being confined between the chain (2) and the mountain-shaped clip (41).

9. A rod-chain assembly for template reinforcement according to claim 8, characterized in that, The side of the mountain-shaped card (41) that engages with the pin (42) is recessed inward around the through hole of the chain (2).

10. A rod-chain assembly for template reinforcement according to claim 8, characterized in that, The snap-fit ​​surface of the mountain-shaped card (41) is provided with an elastic pad layer.

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