Combined wire box for producing membrane shell wall
The innovative design of the combined junction box and the tooling with a knife solves the problems of incomplete junction box pressing and low construction efficiency in membrane wall production, achieving high-efficiency membrane wall production, simplifying the operation process and reducing manpower consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-03
- Publication Date
- 2026-03-17
AI Technical Summary
In the existing technology, during the production process of membrane walls, the concrete pouring after the steel cage is placed causes the combined junction box to not be pressed to the bottom, resulting in mortar leakage during demolding. Moreover, the construction efficiency is low, making it difficult to meet the high-efficiency requirements of prefabricated buildings.
Design a combination of a modular junction box and a tooling fixture with a blade. The tooling fixture includes a side plate, a top plate, an inclined surface, and a positioning plate, which are connected to a sleeve by bolts. The junction box is detachably covered on the tooling fixture. The blade is used to cut the concrete to ensure that the junction box is pressed down to the template. Combined with ribs and friction fixation, stable assembly is achieved.
It improved the production efficiency of membrane shell walls, simplified the operation process, reduced labor consumption, and laid a solid foundation for the application of membrane shell systems.
Smart Images

Figure CN223998691U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of membrane wall production, specifically to a combined junction box for producing membrane walls. Background Technology
[0002] In recent years, the national requirements for the prefabrication rate of prefabricated buildings have been continuously increasing. Especially in projects with a prefabrication rate of over 30%, prefabricated shear walls have become an essential option for prefabricated buildings. However, the current inadequacy of the construction and testing system for prefabricated buildings leads to slow construction speeds for vertical reinforcement connections in ordinary prefabricated shear walls. Furthermore, the inability to use instruments for testing during construction necessitates reliance on the professional skills of construction workers and the responsibility of supervisors for control, severely restricting the practical application of prefabricated shear walls.
[0003] To address this issue, membrane walls have begun to play a unique role. With their advantages such as fast vertical steel reinforcement connection, low environmental pollution, low cost, and reliable quality, they are attracting increasing attention from the industry.
[0004] A membrane shear wall, as the name suggests, is formed by stacking two concrete wall panels together, with the two concrete panels connected by connectors. When prefabricated in the factory, there are cavities between the panels, including a steel reinforcement cage. After installation on site, concrete is poured into the cavities. The resulting prefabricated and cast-in-place concrete integrally stressed wall is called a membrane shear wall.
[0005] When producing the second side of the membrane wall, the steel cage is usually placed first and then the concrete is poured. However, this method is not only inconvenient to pour, but also inefficient. If the concrete is poured first and then the steel cage is placed, the steel fibers in the concrete will cause the combined junction boxes on the steel cage to not be pressed to the bottom. When demolding, the combined junction boxes will not be exposed on the mortar surface and will need to be chiseled out with tools, which brings certain difficulties to the on-site installation. Utility Model Content
[0006] To address the aforementioned problems, this utility model proposes a combined junction box for producing membrane wall casings, which overcomes the shortcomings of the prior art:
[0007] A modular junction box for producing membrane shell walls includes a junction box and a tooling fixture, wherein the junction box is detachably fitted onto the tooling fixture.
[0008] The tooling fixture includes four side plates arranged in a circle, with a top plate connected to the top of each side plate. A pre-drilled hole is provided on the top plate, through which the screw of a bolt passes downward. A sleeve is threaded to the lower part of the screw of the bolt.
[0009] The bottom of the side plates located on the left and right sides is connected to an inclined surface, and the bottom of the side plates located on the front and rear sides and the bottom of the inclined surface are connected to a ring of positioning plates, the outer edge of the positioning plates forming a downward-sloping blade;
[0010] The height of the wire box is greater than the height of the tooling fixture, and the bottom edge of the wire box abuts against the inclined surface. The wire box can be implemented using existing technology, and this application does not seek to make adjustments to the structure of the wire box itself to ensure that the tooling fixture can be adapted to various types of wire boxes.
[0011] Preferably, the blade is an inverted triangular cutter.
[0012] Preferably, the tooling fixture has several ribs on its side.
[0013] Preferably, the side plates located on the front and rear sides are respectively provided with a rib plate.
[0014] Preferably, the length of the rib is less than or equal to the height of the side plate.
[0015] Preferably, the side plate extends obliquely downward or vertically.
[0016] Preferably, when the bolt is connected to the reserved hole, the thread passes through the reserved hole and connects the cutting tool to the sleeve.
[0017] Preferably, the side plate is provided with 3 ribs.
[0018] The beneficial effects of this product are: its simple structure and easy operation, combined with the combination of the modular junction box and the cutting tool, greatly increase the efficiency of membrane wall production, reduce manpower, and lay a solid foundation for the future of membrane wall systems. Attached Figure Description
[0019] The present invention will now be described in further detail with reference to the accompanying drawings.
[0020] Figure 1 This is a schematic diagram of the junction box and the assembled combination junction box with a tool.
[0021] Figure 2 This is a front-view cross-sectional view of the combined junction box (the bolts and sleeves are omitted to avoid confusion).
[0022] Figure 3 This is a front-view sectional view of the tooling with bolts and sleeves after the junction box has been removed.
[0023] Figure 4 This is a schematic diagram of the tooling fixture with a cutting tool.
[0024] Figure 5 This is a schematic diagram of the bolt installation process for the cutting tool.
[0025] Figure 6 This is a schematic diagram of the flipping of the aforementioned junction box. Detailed Implementation
[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0027] like Figure 1-6 As shown, in order to facilitate understanding of the above technical solution of this utility model, the above technical solution of this utility model will be described in detail below through specific usage methods.
[0028] The combined junction box for producing membrane shell walls includes a junction box 9 and a tooling fixture, wherein the junction box 9 is detachably fitted onto the tooling fixture.
[0029] The tooling includes four side plates 8 arranged in a circle. A top plate 7 is connected to the top of the side plates 8. A reserved hole 1 is provided on the top plate 7. The reserved hole 1 is passed through the screw of the bolt 5 downwards. A sleeve 10 is threaded to the lower part of the screw of the bolt 5.
[0030] The bottom of the side plates 8 located on the left and right sides is connected to the inclined surface 3. The bottom of the side plates 8 located on the front and rear sides and the bottom of the inclined surface 3 are connected to a ring of positioning plates 4. The outer edge of the positioning plates 4 forms a downward-sloping blade 6.
[0031] The height of the wire box 9 is greater than the height of the tooling fixture, and the bottom edge of the wire box abuts against the inclined surface 3. The wire box 9 can be implemented using existing technology, and this application does not seek to make adjustments to the structure of the wire box 9 itself, thereby ensuring that the tooling fixture can be adapted to various types of wire boxes.
[0032] In one embodiment, the blade 6 is an inverted triangular cutter.
[0033] In one embodiment, the tooling fixture has several ribs 2 on its side.
[0034] In one embodiment, three ribs 2 are respectively provided on the side plates 8 located on the front and rear sides.
[0035] In one embodiment, the length of the rib 2 is less than or equal to the height of the side plate 8.
[0036] In one embodiment, the side plate 8 extends obliquely downward or vertically.
[0037] In one embodiment, when the bolt 5 is connected to the reserved hole 1, the thread 5 passes through the reserved hole 1 and connects the cutting tool 6 to the sleeve 10.
[0038] In one embodiment, the side plate 8 is provided with three ribs 2.
[0039] The specific implementation steps can be as follows:
[0040] S1: Connect the sleeve 10 to the inside of the tooling fixture by bolt 5 or by strong magnetic attraction.
[0041] S2: Close junction box 9 onto the tooling fixture. The tooling fixture will not fall off due to friction between the rib plate 2 and junction box 9, thus completing the assembly of the modular junction box. According to the specifications, tie the modular junction box to the reinforcing cage. When tying the modular junction box, ensure it is fixed to the reinforcing cage to prevent displacement when pressed down.
[0042] S3: After the concrete is poured, when the second side of the membrane wall is overlapped, the blade 6 of the tooling will cut the concrete at the corresponding position to ensure that the combined junction box can be pressed down to the formwork.
[0043] S4: Demolding is performed. When the strength is reached for demolding, the combined junction box will be taken away by the membrane wall. The worker needs to use power tools to pull the sleeve 10 off the screw 5 with the knife tool, then pull the screw 5 out of the reserved hole 1, and then insert the steel rod through the reserved hole 1 into the inside of the knife tool to remove the concrete inside the knife tool.
[0044] In summary, through the aforementioned unique technical solutions, this product features a simple structure and convenient operation. The combination of the modular junction box and the cutting tool significantly increases the efficiency of membrane wall production, reduces manpower, and lays a solid foundation for the future of membrane wall systems.
[0045] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
Claims
1. A modular junction box for use in the production of a membrane shell wall, characterized by, The utility model relates to a wire box (9) and a belt cutter tool, the wire box (9) is detachably covered on the belt cutter tool; The belt cutter tool includes four side plates (8) surrounding a circle, the top of the side plates (8) is connected with a top plate (7), the top plate (7) is provided with a reserved hole (1), the screw rod of a bolt (5) is penetrated downwards through the reserved hole (1), the lower part of the screw rod of the bolt (5) is threadedly connected with a sleeve (10); The bottom of the side plates (8) on the left and right sides is connected with an inclined surface (3), the bottom of the side plates (8) on the front and back sides is connected with a circle of position plates (4) together with the bottom of the inclined surface (3), the outer edge of the position plates (4) forms an inclined downward blade (6); The height of the wire box (9) is greater than the height of the belt cutter tool, and the bottom edge of the wire box is tightly pressed against the inclined surface (3).
2. The combined junction box according to claim 1, wherein The blade (6) is a reverse triangular cutter.
3. The modular junction box of claim 1, wherein, A plurality of rib plates (2) are arranged on the side surface of the belt cutter tool.
4. The combined junction box according to claim 3, wherein Three rib plates (2) are arranged on the side plates (8) on the front and back sides respectively.
5. The modular junction box of claim 4, wherein, The length of the rib plate (2) is less than or equal to the height of the side plate (8).
6. The modular junction box of claim 1, wherein, The side plate (8) extends obliquely downward or vertically.