A concrete encasement finished product steel formwork device for a sewer pipe socket joint

Abstract

This invention discloses a prefabricated steel formwork device for concrete encapsulation of drainage pipe socket interfaces, belonging to the field of drainage pipe network construction technology. The device includes a modular steel formwork body customized to the pipe dimensions, pins, manual fixing screws, pin fixing holes, a rear handle, an installation handle, and multiple sets of fixing holes. The pins and fixing holes are located at the junction of the steel formwork body. The manual fixing screws are installed in the pin fixing holes. Multiple sets of handles are located on both sides and the rear of the steel formwork body, and the fixing holes are evenly distributed on the sides and rear of the formwork. During construction, the modular formwork is snapped onto the pipe socket interface, the pins are aligned and positioned, and the screws are tightened to form a whole. Steel rods are inserted through the fixing holes for fixation, and concrete is poured to complete the encapsulation. This invention offers quick installation, precise positioning, firm fixation, and resistance to bulging and deformation, resulting in high-quality concrete molding. It is also easy to disassemble and can be reused multiple times, significantly reducing construction costs and improving work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of drainage pipe network construction technology, specifically relating to a precast steel formwork device for concrete encapsulation of drainage pipe socket joints, which is applicable to standardized construction of concrete encapsulation of pipe socket joints in municipal drainage, community water supply and drainage and other projects. Background Technology

[0002] Drainage pipe networks are crucial urban infrastructure. Pipe joints are weak points, susceptible to problems like dislocation and subsidence due to geological changes and external loads. They are typically reinforced with concrete. Currently, on-site construction often uses fabricated wooden formwork or simple steel formwork, which has significant drawbacks. 1. Wooden formwork requires on-site cutting and assembly, resulting in high labor and material costs, significant waste, inability to be reused, and environmental unfriendliness; 2. The simple steel formwork is not securely fixed, and it is easy to bulge and shift during pouring and vibration, resulting in poor concrete forming quality; 3. The formwork erection and dismantling process is cumbersome, relies on manual experience, and has low construction efficiency; 4. Poor template positioning accuracy and loose fit with pipes make it prone to grout leakage, affecting the density and durability of the encapsulation structure.

[0003] Therefore, developing a special steel formwork for encapsulating concrete at the socket joint of drainage pipes that is easy to install, reliably fixed, reusable, and produces high-quality molding is of significant engineering application value. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a precast steel formwork device for concrete encapsulation of drainage pipe socket interfaces, which realizes formwork customization, rapid installation, firm fixing, and reusability, thereby improving the quality and efficiency of concrete encapsulation construction and reducing overall costs.

[0005] The present invention adopts the following technical solution: A precast steel formwork device for concrete encapsulation of drainage pipe socket joints includes a split steel formwork body, pins, manual fixing screws, pin fixing holes, a pull handle, an installation handle, and fixing holes. The steel formwork body is customized according to the pipe size. The pins and pin fixing holes are located at the junction and are secured with screws. Multiple handles facilitate installation and disassembly, and multiple fixing holes are used for steel anchoring.

[0006] The construction method of the prefabricated steel formwork device for concrete encapsulation of drainage pipe socket joints of the present invention is as follows: pipe positioning → formwork preparation → fastening and docking → locking and fixing → on-site anchoring → pouring and curing → demolding and recycling.

[0007] The beneficial effects of the precast steel formwork device for concrete encapsulation of drainage pipe socket joints of the present invention are as follows: 1. Highly customizable and versatile: It can be flexibly customized according to pipe size and is compatible with various specifications of drainage pipe socket interfaces; 2. Efficient and precise installation: The pins allow for quick connection, and the handles assist in positioning, ensuring accurate positioning and simplified procedures; 3. Stable structure and resistance to deformation: Pin locking + multi-point steel rod anchoring effectively prevents bulging, displacement and grout leakage; 4. Easy to disassemble and reusable: The rear handle facilitates demolding, the steel structure is durable, and it can be reused multiple times; 5. Low construction cost and high efficiency: Reduces labor and material consumption, eliminates the need for large machinery, and ensures safe and efficient operation. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the steel formwork device of the present invention. In the diagram: 1—steel formwork body, 2—pin, 3—manual fixing screw, 4—pin fixing hole, 5—rear handle, 6—installation handle, 7—first fixing hole, 8—second fixing hole. Detailed Implementation

[0009] The invention will now be further described with reference to the accompanying drawings.

[0010] Example 1 like Figure 1 As shown, the precast steel formwork device for concrete encapsulation of drainage pipe socket joints of the present invention includes: a steel formwork body 1 is a split steel structure, customized according to the outer diameter of the pipe and the encapsulation size; a pin 2 and a pin fixing hole 4 are correspondingly provided at the junction, and a manual fixing screw 3 is provided for locking; an installation handle 6 is provided on the left and right sides, and a pull handle 5 is provided on the rear side; a first fixing hole 7 is distributed on both sides, and a second fixing hole 8 is distributed on the rear side, the axis of the fixing hole is tangent to the arc of the pipe or at a larger angle, which facilitates steel rod anchoring.

[0011] Example 2 The concrete encapsulation construction method for the socket joint of drainage pipes of the present invention includes the following steps: 1. Pipe placement: Insert the drainage pipe into place, clean the joint of debris, and ensure a smooth connection; 2. Template pretreatment: Check the template welds and flatness, and apply release agent evenly to the inner wall; 3. Fastening and docking: Hold the installation handle and place the split template on both sides of the interface, then push it to insert the pin into the fixing hole; 4. Tighten and fix: Tighten the manual fixing screws to make the template form a whole and fit tightly against the pipe; 5. Anchoring reinforcement: Insert steel rods into the fixing holes and drive them into the soil to ensure that the formwork does not shake or deform; 6. Pouring and curing: Pour the concrete and vibrate it thoroughly, then cure it according to the specifications until it reaches the design strength; 7. Demolding and reuse: Pull out the steel rod, loosen the screws, tap the template to loosen it, then pull it out with the back handle, clean and maintain it for later use.

[0012] This embodiment features high construction efficiency, regular concrete molding, and strong interface durability, making it suitable for the encapsulation construction of socket joints for various drainage pipes.

[0013] The above embodiments are for illustrative purposes only and are not intended to limit the invention. Those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions should also fall within the scope of this invention and are defined by the claims.

Claims

1. A sewer pipe bell and spigot concrete encasement finished steel formwork apparatus, characterized in that, The steel formwork body (1) includes a pin (2), a manual fixing screw (3), a pin fixing hole (4), a rear handle (5), an installation handle (6), a fixing hole (7), and a fixing hole (8). The steel formwork body (1) is a split structure and can be customized according to the size of the drainage pipe. The pin (2) and the pin fixing hole (4) are respectively set at the junction of the steel formwork body (1), and the manual fixing screw (3) is installed on the pin fixing hole (4). The installation handle (6) is set on the left and right sides of the steel formwork body (1), and the rear handle (5) is set on the rear side of the steel formwork body (1). The fixing hole (7) is set on both sides of the steel formwork body (1), and the fixing hole (8) is set on the rear side of the steel formwork body (1).

2. A sewer pipe bell and spigot concrete encasement finished steel formwork assembly according to claim 1 characterised in that, The axis of the fixing hole (7) is tangent to the arc of the pipe or at a greater angle, and is used to insert a steel rod to achieve a stable fixation of the template.

3. The concrete encapsulation steel formwork device for the socket joint of a drainage pipe according to claim 1, characterized in that, The pin (2) and the pin fixing hole (4) work together to achieve quick docking and positioning of the steel template body (1), and the manual fixing screw (3) is used to lock and prevent loosening.

4. The concrete encapsulation steel formwork device for the socket joint of a drainage pipe according to claim 1, characterized in that, The installation handle (6) is used to push the template into place, and the pull handle (5) is used to remove and pull out the template.

5. The concrete encapsulation steel formwork device for the socket joint of a drainage pipe according to claim 1, characterized in that, The main body of the steel formwork (1) is a finished steel formwork with high rigidity and resistance to deformation, and can be reused repeatedly.

6. The concrete encapsulation steel formwork device for the socket joint of a drainage pipe according to claim 1, characterized in that, The main body of the steel formwork (1) is tightly fitted to the outer wall of the pipe after being snapped together, and the seal is tight to prevent leakage of grout during concrete pouring.

7. A construction method based on the precast steel formwork device for encasing the concrete joint of a drainage pipe as described in any one of claims 1-6, characterized in that, Includes the following steps: 1) Pipe placement: Connect the drainage pipe sockets in place and clean the joint area; 2) Template preparation: Check that the main body (1) and accessories of the steel template are intact, and apply release agent to the inner wall; 3) Template fastening: Place the split steel template body (1) on both sides of the pipe interface by installing the handle (6), and push it so that the pin (2) is inserted into the pin fixing hole (4). 4) Locking and fixing: Tighten the manual fixing screws (3) to make the steel template body (1) form a whole, and adjust the template to fit the pipe squarely; 5) On-site anchoring: Insert the steel rod into the fixing hole (7) and fixing hole (8) and drive it into the soil to ensure the formwork is stable; 6) Pouring and curing: Pour the joint concrete and vibrate it to compact it, then complete the curing process; 7) Demolding and recycling: Pull out the steel rod, loosen the manual fixing screw (3), tap the template to loosen it, and pull it out through the back handle (5). Clean it and keep it for later use.

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