Die box device for solving problem that tail end of concrete embedded threading steel pipe pierces template

By protecting the ends of the steel pipes with a mold box device, the problem of steel pipes piercing the template is solved, thus achieving template protection and convenient wiring, and has the effects of saving steel and ensuring safety.

CN223893802UActive Publication Date: 2026-02-10CHINA TOBACCO HENAN IND CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202520222243.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-12
Publication Date
2026-02-10
Estimated Expiration
2035-02-12

AI Technical Summary

Technical Problem

When pre-embedding conduits at the location of concrete beams or slabs, the end of the steel pipe may pierce the wooden formwork, causing damage to the formwork, affecting disassembly and subsequent wiring operations.

Method used

Design a mold box device, including a mold box, a nut and a bolt, which protect the end of a steel pipe by threaded connection or sleeve connection. The bottom of the mold box is removable. The nut and bolt are made of flexible plastic material to prevent wire damage and leakage. The base plate is removable to facilitate subsequent wiring.

Benefits of technology

Reducing the length of steel pipes protects the template, facilitates disassembly, provides space for wiring, and avoids the risk of wire damage and leakage, making it highly valuable for promotion.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223893802U_ABST
    Figure CN223893802U_ABST
Patent Text Reader

Abstract

The utility model discloses a mould box device for solving the problem that the tail end of a concrete pre-embedded threading steel pipe pierces a template, which comprises a mould box, the top end of the mould box is connected with a reserved steel pipe, the lower part of the reserved steel pipe is positioned in the mould box, and a bottom plate is arranged at the bottom end of the mould box; the nut is arranged in the mold box, and the nut is connected with the lower part of the reserved steel pipe; and the screw cap is arranged in the die box, and the screw cap is connected with the lower part of the nut. The die box device is pre-buried at the bottom of concrete, the tail end of the steel pipe is processed, the reserved steel pipe does not need to penetrate out of the bottom of a concrete beam or a concrete plate, a template is protected, later-stage template disassembly is facilitated, a wire lapping space is reserved, later-stage wiring is facilitated, and the die box device is simple, practical and high in popularization value.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of building engineering technology, and in particular to a mold box device for solving the problem of the end of the pre-embedded steel pipe piercing the formwork in concrete. Background Technology

[0002] Before pouring concrete for the tobacco raw material turnover warehouse, considering the installation of fire protection, HVAC, and information technology systems, various conduits, such as steel pipes, need to be pre-embedded at relevant locations on the concrete beams or slabs for wiring. Generally, to ensure proper positioning and prevent grout blockage, a portion of the pre-embedded steel pipe will protrude from the bottom of the concrete beam or slab. During the carpentry formwork erection, this exposed steel pipe can cause perforation damage to the formwork and also affect formwork dismantling.

[0003] Therefore, there is an urgent need for a device that can effectively protect the wooden formwork during the concrete pouring process. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a mold box device for solving the problem of the end of the pre-embedded steel pipe in concrete piercing the formwork. This mold box device is pre-embedded in the bottom of the concrete and the end of the steel pipe is treated to reduce the length of the reserved steel pipe, so that the reserved steel pipe does not need to go out of the roof, thus protecting the formwork, facilitating the later dismantling of the formwork, and retaining the space for wiring, which is beneficial for later wiring. It is simple and practical and has high promotion value.

[0005] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0006] A formwork device for resolving the issue of the end of a pre-embedded steel conduit piercing the formwork in concrete, comprising:

[0007] A mold box, the top of which is connected to a reserved steel pipe, and the lower part of the reserved steel pipe is located inside the mold box, and a bottom plate is provided at the bottom of the mold box;

[0008] A nut is provided inside the mold box, and the nut is connected to the lower part of the reserved steel pipe;

[0009] A nut is disposed inside the mold box and is connected to the lower part of the nut.

[0010] Preferably, in the above technical solution, the diameter of the nut is larger than the diameter of the reserved steel pipe. The nut is threaded or sleeved with the reserved steel pipe.

[0011] Preferably, in the above technical solution, the diameter of the nut is larger than the diameter of the nut. The nut and the nut are connected by a thread or a sleeve.

[0012] Preferably, in the above technical solution, the nut is a flexible plastic nut, and the screw cap is a plastic screw cap.

[0013] Preferably, in the above technical solution, the base plate is detachably connected to the mold box.

[0014] The above-mentioned technical solution of this utility model has the following beneficial effects:

[0015] (1) Use a mold to process the end of the reserved steel pipe to reduce the length of the reserved steel pipe and save steel;

[0016] (2) It helps protect the template and facilitates the recycling of woodworking templates;

[0017] (3) Provides usable space for subsequent wiring operations. Flexible plastic nuts can effectively protect wires compared to steel nuts, avoiding scratches on the wires and avoiding the risk of leakage. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0019] Figure 1 This is an exploded diagram illustrating the solution to the problem of the end of the pre-embedded steel pipe piercing the formwork in concrete, as described in this application.

[0020] Figure 2 This is a schematic diagram of the formwork device for solving the problem of the end of the pre-embedded steel pipe piercing the formwork in concrete, as described in this application.

[0021] Among them: 1-reserved steel pipe, 2-mold box, 3-nut, 4-nut, 5-base plate. Detailed Implementation

[0022] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0023] A formwork device for resolving the issue of the end of a pre-embedded steel conduit piercing the formwork in concrete, comprising:

[0024] The top of the mold box 2 is connected to the reserved steel pipe 1, and the lower part of the reserved steel pipe 1 is located inside the mold box 2. The bottom of the mold box 2 is provided with a base plate 5.

[0025] Nut 3 is set inside the mold box 2 and is connected to the lower part of the reserved steel pipe 1;

[0026] Nut 4 is located inside the mold box 2 and is connected to the lower part of nut 3.

[0027] Furthermore, the diameter of nut 3 is larger than the diameter of the reserved steel pipe 1. Nut 3 is threaded or sleeved with the reserved steel pipe 1.

[0028] Furthermore, the diameter of the pipe in nut 4 is larger than that in nut 3. Nut 4 and nut 3 are connected by thread or sleeve. Nut 4 can seal the bottom of the reserved steel pipe to prevent concrete from seeping in from above the mold box; it can be opened later for convenient wiring.

[0029] Preferably, nut 3 is a flexible plastic nut, and nut 4 is a plastic nut. The choice of materials mainly considers avoiding the risk of leakage caused by damage to the wire during the later wire pulling process. At the same time, the nuts can be cut out according to construction needs to increase the space for later wiring operations. Of course, this application is not limited to this.

[0030] Furthermore, the base plate 5 is detachably connected to the formwork 2. The bottom of the formwork 2 uses a detachable base plate 5, which prevents concrete from seeping in from below the formwork during the concrete pouring process. It can be opened later for easy wiring. If not suitable, it can be directly plastered without affecting the aesthetics of the roof.

[0031] During use, the reserved steel pipe 1 is usually inserted into the nut 3, the nut 4 is screwed on, and then the bottom plate 5 is covered to complete the treatment of the end (lower part) of the reserved steel pipe 1. After that, the mold box 2 is placed on the wooden template, and the concrete pouring work can begin.

[0032] If there are many and densely packed steel pipes 1, several nuts 3 and bolts 4 can be set on the mold box 2 according to the position of the steel pipes.

[0033] After the later pouring is completed and the wooden formwork is removed, the base plate 5 and nut 4 can be opened to handle the wiring.

[0034] The device can be used simultaneously on the side of cast-in-place concrete columns, or it can be used on the side.

[0035] This formwork device is embedded in the bottom of the concrete. The end of the steel pipe is treated so that the reserved steel pipe does not need to pass through the bottom of the concrete beam or slab, which protects the formwork, facilitates the later dismantling of the formwork, and retains the space for wiring, which is beneficial for later wiring. It is simple and practical and has high promotion value.

[0036] Although the present invention has been disclosed above with reference to embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various different choices and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention is defined by the claims and their equivalents.

Claims

1. A formwork device for solving the problem of the end of a pre-embedded steel conduit piercing the formwork in concrete, characterized in that, include: A mold (2) is connected at its top to a reserved steel pipe (1), and the lower part of the reserved steel pipe (1) is located inside the mold (2). A bottom plate (5) is provided at the bottom of the mold (2). Nut (3), which is set inside the mold box (2), and the nut (3) is connected to the lower part of the reserved steel pipe (1); A nut (4) is disposed inside the mold (2) and is connected to the lower part of the nut (3).

2. The formwork device for solving the problem of the end of the pre-embedded steel pipe piercing the formwork in concrete, as described in claim 1, is characterized in that, The diameter of the nut (3) is larger than the diameter of the reserved steel pipe (1).

3. The formwork device for resolving the issue of the end of the pre-embedded steel pipe piercing the formwork in concrete, as described in claim 2, is characterized in that... The nut (3) is threaded or sleeved to the reserved steel pipe (1).

4. The formwork device for solving the problem of the end of the pre-embedded steel pipe piercing the formwork in concrete, as described in claim 1, is characterized in that... The diameter of the nut (4) is larger than the diameter of the nut (3).

5. The formwork device for solving the problem of the end of the pre-embedded steel pipe piercing the formwork in concrete, as described in claim 4, is characterized in that... The nut (4) is threaded or sleeved with the nut (3).

6. The formwork device for solving the problem of the end of the pre-embedded steel pipe piercing the formwork in concrete, as described in claim 1, is characterized in that, The nut (3) is a flexible plastic nut, and the screw cap (4) is a plastic screw cap.

7. The formwork device for solving the problem of the end of the pre-embedded steel pipe piercing the formwork in concrete, as described in claim 1, is characterized in that... The base plate (5) is detachably connected to the mold box (2).