Foundation trench template erecting tool

Abstract

The application provides a foundation trench template erecting tool, and relates to the technical field of building engineering construction, which comprises a template assembly, two side templates comprising at least one main template and spliced auxiliary templates, and bolt connection holes and screw rod positioning holes are formed in the templates; an adjustable support structure is arranged outside the template assembly, and an elongated positioning hole is formed in the body to fix a connecting piece in the corresponding bolt connection hole; a tensioning screw rod assembly transversely penetrates the corresponding screw rod positioning holes on the two side templates; the tensioning screw rod assembly comprises a connecting rod and first and second end screw rods at two ends, and the outer end of the end screw rod penetrates out of the corresponding side template and is provided with a fastening nut. The application effectively solves the problems of poor size adaptability, easy mortar leakage, and difficult operation, alignment and disassembly in narrow space of the traditional tool by modular template cooperation, elongated hole adjustment of the adjustable support, and three-section screw rod pulling and inner and outer plugging clamping.

Description

Technical Field

[0001] This application relates to the field of building construction technology, and in particular to a foundation trench formwork support tool. Background Technology

[0002] Currently, the traditional formwork systems used in foundation trench formwork construction are mostly custom-made components or on-site processed wooden molds, whose structures are often quite fixed. When faced with foundation trenches of different sizes and depths, traditional formwork systems have extremely poor adaptability, requiring extensive on-site manual cutting to match the actual width. Simultaneously, the related supporting structures are mostly conventional steel pipes with top supports; due to the lack of precise scale references, height adjustment relies entirely on worker experience, and the formwork and supports often use conventional round holes for positioning, making on-site alignment difficult. This results in amplified manual operation errors in the narrow and complex foundation trench working space, leading to significant dimensional errors and making it difficult to guarantee the flatness and verticality of the formwork.

[0003] Furthermore, traditional tie rods are mostly continuous structures, making installation extremely difficult in confined foundation trenches. During dismantling, due to the limited working surface, continuous tie rods often cannot be completely pulled out, requiring the exposed ends to be physically cut off. This method is not only cumbersome and prone to causing formwork deformation and grout leakage at joints, but also results in significant material waste, with the resulting cutting waste being difficult to reuse, greatly increasing construction costs. Summary of the Invention

[0004] In order to improve the problems of poor adaptability, difficulty in alignment in narrow spaces, large material loss and easy leakage of traditional foundation trench formwork systems, this application provides a foundation trench formwork support tool.

[0005] The foundation trench formwork support tool provided in this application adopts the following technical solution: A foundation trench formwork support tool, comprising: The template assembly includes two templates arranged opposite each other. Each template includes at least one main template and a sub-template spliced ​​with the main template. The main template has a first bolt connection hole and a first screw positioning hole, and the sub-template has a second bolt connection hole and a second screw positioning hole. An adjustable support structure is disposed on the outside of the template assembly. The body of the adjustable support structure has an elongated positioning hole. A connector passes through the elongated positioning hole and is fixed within the first bolt connection hole or the second bolt connection hole. The tie rod assembly has a first screw positioning hole or a second screw positioning hole that extends laterally through the templates on both sides; the tie rod assembly includes a middle connecting rod and a first end screw and a second end screw respectively screwed to both ends of the connecting rod, the outer ends of the first end screw and the second end screw respectively protrude through the templates on the corresponding sides and are fitted with fastening nuts.

[0006] Furthermore, the inner ends of both the first end screw and the second end screw are provided with fine thread structures, and are screwed into the two ends of the connecting rod through the fine thread structures; Both the outer ends of the first end screw and the second end screw are provided with coarse thread structures, and the fastening nut is threadedly connected to the coarse thread structure.

[0007] Furthermore, the surface of the fastening nut is provided with scale markings to indicate the distance it is screwed into along the coarse thread structure.

[0008] Furthermore, the adjustable support structure is a split structure, with height markings on the surface of the upper rod.

[0009] Furthermore, the tie rod assembly also includes steel clips, which are disposed on the inner sides of the templates on both sides that are close to each other; the steel clips are sleeved on the first end screw and the second end screw to limit the minimum distance between the templates on both sides.

[0010] Furthermore, a T-shaped plug is fitted between the fastening nut and the outer template. The plugging end of the T-shaped plug is inserted into the first screw positioning hole or the second screw positioning hole. The fastening nut is screwed inward to press the template onto the steel clamp.

[0011] Furthermore, the pull screw assembly also includes a traction rope, one end of which is connected to the outside of the connecting rod for pulling out the connecting rod after the first end screw and the second end screw are disassembled.

[0012] Furthermore, a sleeve is horizontally arranged between the templates on both sides, which is fitted over the outside of the tie rod assembly, and the traction rope is arranged inside the sleeve.

[0013] Furthermore, a detachable lifting ring for vertical hoisting is fixedly installed on the top of the main template.

[0014] Furthermore, the main template in the single-sided template includes an upper main template and a lower main template that are spliced ​​together vertically, and the sub-template is provided with a variety of different modular specifications.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. By adopting modular assembly template components, including main templates and secondary templates of various modular specifications, the template system can be flexibly combined and assembled according to the actual size of the foundation trench, without the need for a large amount of on-site cutting. This achieves high adaptability to diverse working conditions and high turnover rate of materials, effectively solving the problems of poor versatility and serious material waste of traditional templates. 2. By setting elongated positioning holes and height scale markings on the adjustable support components, the connection and alignment between the support components and the template is made more convenient, and the support height can be adjusted intuitively and accurately according to the scale. This achieves rapid positioning and precise elevation control for template installation, effectively solving the problems of difficult alignment in narrow spaces and large errors caused by reliance on experience for adjustment. 3. By adopting a three-section tie rod assembly consisting of a first end screw, a second end screw, and a middle connecting rod, and connecting a traction rope to the connecting rod, the tie rod can be transferred and assembled separately in narrow spaces, and pulled out step by step by the traction rope during demolding. This achieves efficient disassembly and reuse of the tie rod components, effectively solving the problems of difficult installation and disassembly of traditional full-length tie rods in narrow foundation trenches and the inability to adapt to different widths requiring on-site cutting. 4. By integrating steel clamps, T-shaped plugs, and graduated nuts into the tie rod assembly, this component simultaneously possesses three functions: precise internal support positioning, leak-proof sealing, and quantitative adjustment of formwork spacing. This integrated approach significantly improves the accuracy of formwork erection, the reliability of leak-proof sealing, and the ease of construction, effectively solving the problems of traditional systems requiring separate internal supports and plugs, and the coarse control of tie force. The coordinated operation of multiple structural components simplifies the construction process and greatly improves the final product quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the three-section screw structure according to an embodiment of this application; Figure 3 This is a schematic diagram of the connection of the three-section screw according to an embodiment of this application; Figure 4 This embodiment of the application is mainly used to illustrate the structural diagram of the sleeve; Figure 5 This is a schematic diagram of the main template in an embodiment of this application; Figure 6 This is a schematic diagram of the structure of the sub-template of an embodiment of this application; Figure 7 This is a schematic diagram of the adjustable support structure according to an embodiment of this application; Figure 8 This is an application diagram illustrating an embodiment of this application.

[0018] Figure label: 1. Three-section screw; 101. First end screw; 102. Fastening nut; 103. Connecting rod; 104. T-shaped plug; 105. Steel clamp; 106. Second end screw; 2. Sleeve; 3. Main template; 301. First bolt connection hole; 302. First screw positioning hole; 4. Bolts; 5. Sub-template; 501. Second bolt connection hole; 502. Second screw positioning hole; 6. Adjustable support structure; 601. Elongated positioning hole; 7. Towing rope; 8. Hanging rings. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0020] Reference Figures 1-8 This application discloses a foundation trench formwork support tool, which includes: The template assembly includes two templates arranged opposite each other. Each template includes at least one main template 3 and a secondary template 5 spliced ​​with the main template 3. The main template 3 is provided with a first bolt connection hole 301 and a first screw positioning hole 302. The secondary template 5 is provided with a second bolt connection hole and a second screw positioning hole 502.

[0021] An adjustable support structure 6 is located on the outside of the template assembly. The body of the adjustable support structure 6 has an elongated positioning hole 601, and the connector passes through the elongated positioning hole 601 and is fixed in the first bolt connection hole 301 or the second bolt connection hole.

[0022] The tie rod assembly has a first screw positioning hole 302 or a second screw positioning hole 502 that extends laterally through the templates on both sides. The tie rod assembly includes a connecting rod 103 in the middle and a first end screw 101 and a second end screw 106 respectively screwed to both ends of the connecting rod 103. The outer ends of the first end screw 101 and the second end screw 106 respectively protrude through the templates on the corresponding sides and are fitted with fastening nuts 102.

[0023] Thus, by integrating modularly assembled template components, an adjustable support structure 6 with elongated positioning holes 601, and a three-section detachable tie rod assembly, the template system achieves high adaptability to the trench size, precise installation, and ease of adjustment. Specifically, during the construction preparation stage, the main template 3 and secondary templates 5 of different modular specifications can be flexibly selected and assembled according to the actual pouring height and width of the trench to form the required support area; the adjustable support structure 6 aligns and tightens with the bolt connection holes on the template through its elongated positioning holes 601, providing external support for the template. This elongated hole design significantly reduces the difficulty of alignment in narrow spaces and improves installation efficiency; the tie rod assembly extends laterally through both sides of the template, and its split structure facilitates transfer and installation in confined spaces. By tightening the fastening nuts 102 at both ends, a stable horizontal tie force can be provided to both sides of the template to resist the lateral pressure during concrete pouring. The synergistic effect of each component ensures the overall rigidity, dimensional accuracy, and ease of construction of the template system.

[0024] Specifically, the template components are all made of lightweight, thin-walled steel plates. In some embodiments, refer to Figure 1 , Figure 5 and Figure 6 The main formwork 3 in the single-sided formwork includes an upper main formwork and a lower main formwork that are vertically spliced ​​together. The secondary formwork 5 is provided with various modular specifications of different sizes, such as 500mm and 1000mm. It should be understood that the main formwork 3 serves as a general-purpose foundation component, while the secondary formwork 5 covers commonly used modular sizes in engineering. The advantage of this arrangement is that the "main formwork + secondary formwork" matrix splicing can be flexibly carried out on the construction site according to the actual width, depth, and local elevation deviations of the foundation trench, without the need for on-site cutting operations, greatly improving the turnover and utilization rate of materials. In addition, the top of the main formwork 3 is fixedly equipped with detachable lifting rings 8 for vertical hoisting, providing a reliable force point for easy on-site lifting and positioning.

[0025] Reference Figure 1 and Figure 7Regarding the support structure, the adjustable support structure 6 is a split structure, with height markings on the surface of the upper rod. Specifically, the adjustable support structure 6 features elongated positioning holes 601. During installation, because the foundation trench surface is often uneven, traditional round hole connections require repeated movement of heavy formwork. However, with the introduction of elongated positioning holes 601, connectors, such as bolts 4, can slide freely within these holes for a certain distance. This connector is existing technology and can be easily implemented by those skilled in the art, requiring no further explanation. Combined with the height markings on the upper rod surface, construction workers can quickly adapt to the pouring conditions and tighten bolts 4, significantly reducing the difficulty of alignment and labor intensity in confined working spaces.

[0026] It is worth noting that the core load-bearing structure employs a three-section tie rod assembly. (See reference...) Figure 1 , Figure 2 and Figure 3 In other embodiments, the inner ends of the first end screw 101 and the second end screw 106 are both provided with fine thread structures, which are screwed into the two ends of the connecting rod 103 through the fine thread structures; at the same time, the outer ends of the first end screw 101 and the second end screw 106 are both provided with coarse thread structures, and the fastening nut 102 is threaded onto the coarse thread structure. This "fine inside, coarse outside" thread design allows the fine inner thread to achieve precise fit between components, ensuring absolute stability of the connection between rods; while the coarse outer thread can withstand greater axial tightening force and has good anti-slip performance, ensuring safe construction operations.

[0027] Furthermore, in order to solve the problems of internal dimension positioning and grout leakage of the template, the tie rod assembly also includes a steel clamp 105, which is set on the inner side of the templates on both sides that are close to each other; the steel clamp 105 is sleeved on the first end screw 101 and the second end screw 106 to limit the minimum distance between the templates on both sides.

[0028] Preferably, a T-shaped plug 104 is fitted between the fastening nut 102 and the outer template, with the plugging end of the T-shaped plug 104 inserted into the first screw positioning hole 302 or the second screw positioning hole 502. During the locking action, the fastening nut 102 is continuously screwed inward, and the flange portion of the T-shaped plug 104 presses against the outer surface of the template, thereby firmly pressing the template against the inner steel clamp 105.

[0029] Thus, the outer T-shaped plug 104, the template, and the inner steel clamp 105 form an absolute mechanical closed loop of "external pressure-internal support." Simultaneously, the portion of the T-shaped plug 104 inserted into the hole tightly fills the physical gap between the screw and the positioning hole. This not only expands the contact area to avoid concentrated tension causing localized deformation of the template, but also completely seals off the path for concrete leakage at its physical source.

[0030] To achieve precise control of the closed loop described above, the surface of the fastening nut 102 is provided with scale markings (not shown in the figure) to indicate the distance it is screwed into along the coarse thread structure. Construction personnel can quantitatively adjust the spacing between the two templates by observing the scale markings, achieving millimeter-level precision fine-tuning.

[0031] It is important to emphasize here that, in order to overcome the industry pain point of difficulty in recycling the continuous screw rod within a narrow base trench, this application innovatively introduces a recycling mechanism into the tie screw assembly. In some embodiments, refer to Figure 2 , Figure 3 and Figure 4 A sleeve 2, fitted over the outside of the tie rod assembly, is also provided laterally between the templates on both sides. The tie rod assembly also includes a traction rope 7, which is disposed inside the sleeve 2, with one end of the traction rope 7 connected to the outside of the connecting rod 103. Specifically, the end of the connecting rod 103 is provided with a concave annular hole for binding the traction rope 7; the threaded sections of the first end screw 101 and the second end screw 106 are also provided with rope grooves for accommodating the traction rope 7, and the rope grooves are arranged along the axial direction of the screws.

[0032] For example, the sleeve 2 can be made of conventional PVC rigid pipe. During the disassembly stage, since the concrete has been isolated by the sleeve 2, the construction personnel only need to unscrew the fastening nut 102 and pull out the first end screw 101 and the second end screw 106 on the outside; then, they can easily pull out the connecting rod 103 left in the sleeve 2 by directly pulling the traction rope 7 left outside the trench. This cleverly overcomes the physical limitation of being unable to pull out long rods laterally in narrow working surfaces, and achieves 100% recycling and reuse of the core screw component.

[0033] Therefore, this application adopts a multi-segment split threaded tie rod, which is formed by combining a first-end tie rod 101, a second-end tie rod 106, and an intermediate connecting rod 103. By replacing the connecting rod 103 of different lengths, the width of the foundation trench formwork can be roughly adapted without the need for on-site cutting of the tie rod. Moreover, a traction rope 7 is reserved inside the tie rod to avoid the limitations of narrow working surfaces and facilitate the overall assembly and disassembly of the tie rod. This tie rod assembly integrates tie-and-pull functions and internal support. The outer side of the template is equipped with a fastening nut 102, and the inner side is equipped with a rotatable steel clip 105. After coarse adjustment, rotating the fastening nut 102 can precisely fine-tune the width of the template support component, simultaneously taking into account the template size positioning and internal support requirements. On the basis of improving the tie rod's adaptability and stabilizing the tie force, a portable formwork construction structure that can be coarsely and finely adjusted is formed.

[0034] The implementation principle of a foundation trench formwork support tool according to an embodiment of this application is as follows: In actual construction, the foundation trench formwork erection tool of this application first enters the formwork preparation and initial positioning stage: construction personnel select the appropriate module of main formwork 3 and secondary formwork 5 according to the depth and width of the foundation trench on site, assemble them, and use lifting rings 8 to hoist them into the foundation trench. Subsequently, using the elongated positioning holes 601 on the adjustable support structure 6, bolts 4 are inserted into the first bolt connection hole 301 or the second bolt connection hole 501 for initial quick connection. At the same time, the overall elevation is precisely adjusted according to the height scale markings on the support rod to complete the leveling and verticality locking of the single-sided formwork.

[0035] Entering the closed-loop stage of threading and locking: The pre-connected connecting rod 103, the first end screw 101, and the second end screw 106, along with the traction rope 7, are threaded into the sleeve 2 pre-placed between the two side templates. The two ends of the screws pass sequentially through the inner steel clamp 105, the template positioning hole, and the outer T-shaped plug 104. Construction workers use the fastening nut 102 to screw in along the coarse thread, and using the scale markings on the nut surface, push the template inward from the outside, ensuring it fits tightly against the internally supporting steel clamp 105, achieving spacing and sealing.

[0036] After the concrete is poured and cured, the dismantling and recycling phase begins: unscrew the outer fastening nut 102 and remove the T-shaped plug 104. Unscrew and pull out the first end screw 101 and the second end screw 106 to both sides. Finally, in the narrow trench passage, the operator only needs to pull the traction rope 7 to smoothly pull the middle connecting rod 103 out of the sleeve 2. At this point, the entire set of high-value tie and support components has been completely dismantled and is ready for the next cycle of use.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tool for supporting foundation trench formwork, characterized in that, include: The template assembly includes two templates arranged opposite each other. Each template includes at least one main template and a sub-template spliced ​​with the main template. The main template has a first bolt connection hole and a first screw positioning hole, and the sub-template has a second bolt connection hole and a second screw positioning hole. An adjustable support structure is disposed on the outside of the template assembly. The body of the adjustable support structure has an elongated positioning hole. A connector passes through the elongated positioning hole and is fixed within the first bolt connection hole or the second bolt connection hole. The tie rod assembly has a first screw positioning hole or a second screw positioning hole that extends laterally through the templates on both sides; the tie rod assembly includes a middle connecting rod and a first end screw and a second end screw respectively screwed to both ends of the connecting rod, the outer ends of the first end screw and the second end screw respectively protrude through the templates on the corresponding sides and are fitted with fastening nuts.

2. The foundation trench formwork support tool according to claim 1, characterized in that, Both the inner ends of the first end screw and the second end screw are provided with fine thread structures, and are screwed into the two ends of the connecting rod through the fine thread structures; Both the outer ends of the first end screw and the second end screw are provided with coarse thread structures, and the fastening nut is threadedly connected to the coarse thread structure.

3. The foundation trench formwork support tool according to claim 2, characterized in that, The surface of the fastening nut is provided with scale markings to indicate the distance it is screwed into the coarse thread structure.

4. The foundation trench formwork support tool according to claim 1, characterized in that, The adjustable support structure is a split structure, with height markings on the surface of the upper rod.

5. A foundation trench formwork support tool according to claim 1, characterized in that, The tie rod assembly also includes steel clips, which are disposed on the inner sides of the templates on both sides that are close to each other; the steel clips are sleeved on the first end screw and the second end screw to limit the minimum distance between the templates on both sides.

6. A foundation trench formwork support tool according to claim 5, characterized in that, A T-shaped plug is fitted between the fastening nut and the outer template. The plugging end of the T-shaped plug is inserted into the first screw positioning hole or the second screw positioning hole. The fastening nut is screwed inward to press the template onto the steel clamp.

7. A foundation trench formwork support tool according to claim 1, characterized in that, The pull screw assembly also includes a traction rope, one end of which is connected to the outside of the connecting rod for pulling out the connecting rod after the first end screw and the second end screw are disassembled.

8. A foundation trench formwork support tool according to claim 7, characterized in that, A sleeve is also provided laterally between the templates on both sides, which is fitted outside the tie rod assembly, and the traction rope is placed inside the sleeve.

9. A foundation trench formwork support tool according to claim 1, characterized in that, The top of the main template is fixedly equipped with a detachable lifting ring for vertical hoisting.

10. A foundation trench formwork support tool according to claim 1, characterized in that, The main template in the single-sided template includes an upper main template and a lower main template that are spliced ​​together vertically, and the sub-templates are provided with various modular specifications of different sizes.

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