Turnover mold device for prefabricated masonry wall concealed wire box

Abstract

The utility model discloses a turnover mould device for a prefabricated masonry wall hidden buried wire box, which relates to the technical field of construction engineering secondary structure wall body wire box installation, and comprises a prefabricated steel mould, a positioner and a threaded fastener, the prefabricated steel mould is formed by connecting a prefabricated steel plate and a cutting steel plate through a hinge, and is a template component of a prefabricated block; the positioner is composed of a wire box assembling hole, a pipeline assembling hole and a positioning wire box, is welded and fixed to the cutting steel plate and is used for accurately positioning the concealed wire box in the wire box assembling hole, the problem of position deviation of the wire box back to back of the masonry wall is effectively solved, panel installation in the later period is facilitated, the attractiveness and integrity of the wall are improved, and the construction cost is reduced. The threaded fastener is composed of a bolt, a nut and a connecting piece and used for closing the prefabricated steel mold and disassembling the prefabricated wire box, and the mold device is convenient to manufacture and can be recycled in multiple projects; one-time building forming with a secondary structure wall body can be achieved, and the electrical installation progress is effectively accelerated; and hidden dangers of chiseling, repairing and poor sound insulation of the masonry wall surface are avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of concealed junction box installation in secondary structure walls of building engineering, specifically a mold device for reusable prefabricated masonry wall concealed junction boxes. Background Technology

[0002] In building construction, the concealed installation of electrical junction boxes within secondary structural walls requires the use of equipment such as toothed saws and grooving machines to chisel away at the completed masonry walls before installing the junction boxes and sealing them with a second layer of cement mortar. However, traditional methods of concealed junction box installation result in poor wall aesthetics and integrity due to the chiseling and repairing of the wall surface. Furthermore, these methods can lead to problems such as misaligned junction boxes requiring additional boxes for fixation, wall cracking after finishing, and poor sound insulation.

[0003] The utility model patent application CN117996656A discloses an installation tool and method for concealed junction boxes in secondary structure walls. While this tool and method offer advantages such as accurate positioning, convenient panel installation, and prevention of the junction box from sinking into the wall, it still has the following shortcomings: 1. The device has a small but complex structure and high manufacturing cost, making it inconvenient for on-site fabrication; 2. Its applicability is limited, only addressing the concealment of a single, independent junction box, and failing to effectively solve the problem of accurate positioning of back-to-back junction boxes in secondary structure walls; 3. The operation is difficult, and in actual use, the sealing method may be subject to the subjective control of the workers, leading to significant differences in installation quality and incomplete sealing; 4. Although it represents a significant quality improvement over traditional junction box concealment methods, the construction procedures are the same as traditional methods, making prefabrication impossible and hindering effective construction progress. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a mold device for reusable prefabricated masonry wall concealed junction boxes, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A mold device for reusable prefabricated masonry wall concealed junction boxes includes a prefabricated steel mold, a locator, and threaded fasteners. The prefabricated steel mold is composed of prefabricated steel plates and cut steel plates, and is a cubic shape with an open top, serving as the enclosure component of the mold device. The locator consists of junction box assembly holes, pipeline assembly holes, and a positioning junction box, and is fixed to the cut steel plate by welding. It is used to position the junction box in the junction box assembly holes, so that the junction box protrudes from the wall surface. The threaded fasteners consist of bolts and nuts, and are used for closing the prefabricated steel mold and disassembling the junction box after prefabrication.

[0009] As a further embodiment of this utility model, the prefabricated steel mold can be flexibly selected according to the size and arrangement requirements of the junction boxes at the construction site and the material inventory, so as to realize multiple application scenarios such as back-to-back junction boxes, single junction boxes, parallel double junction boxes, and parallel triple junction boxes in masonry walls. Only the length of the prefabricated steel plate needs to be adjusted and the steel plate needs to be cut, but the appropriate rigidity requirements must be ensured.

[0010] As a further embodiment of this utility model, the locator can be configured in various forms such as single junction box, parallel double junction box, and parallel triple junction box according to the needs of the construction site. Only the number and size of the reserved holes of the locator on the precast steel template need to be adjusted.

[0011] As a further embodiment of this utility model, before prefabricating the concealed junction box in the masonry wall, electrical conduits such as PVC pipes, PPR pipes, and thin-walled stainless steel pipes of 50-100mm length are pre-inserted into the conduit assembly holes according to the design of the construction drawings. Simultaneously, 50-100mm long electrical conduits are pre-embedded in the concrete prefabricated block of the concealed junction box, which is known through the mold, so as to facilitate the connection with the conduits concealed in the masonry wall later.

[0012] As a further embodiment of this utility model, the filling material for the prefabricated buried junction box is cast-in-place ready-mixed concrete or lightweight aggregate foamed concrete.

[0013] (III) Beneficial Effects

[0014] This utility model provides a mold device for reusable prefabricated masonry wall concealed junction boxes, which has the following beneficial effects:

[0015] This reusable prefabricated masonry wall concealed junction box mold device has a simple structure, wide availability of materials, low manufacturing cost, and is easy to manufacture on-site. Moreover, the mold device can be reused for multiple projects.

[0016] This reusable prefabricated masonry wall concealed junction box mold device has a wide range of applications. It is not only suitable for the production of prefabricated blocks for back-to-back junction boxes in masonry walls, but also for single independent junction boxes, parallel double junction boxes, parallel triple junction boxes, etc. By positioning the junction boxes with a locator, it can effectively solve the problem of accurate pre-embedded positioning of back-to-back junction boxes in secondary structure walls, and further improve the aesthetics and integrity of the wall.

[0017] This reusable prefabricated masonry wall concealed junction box mold device uses a locator to position the junction box at a position protruding from the surface of the prefabricated steel mold, so that the surface of the junction box formed after the prefabricated filler solidifies also protrudes from the surface of the masonry wall. After the masonry construction is completed, this design can prevent the junction box from sinking into the wall or being misaligned, making it convenient for workers to install the panel later, and eliminating the need to use long bolts or add sleeves for fixing, thus reducing installation costs.

[0018] The construction process is simple and is not affected by the workers during actual use. By prefabricating junction boxes to fix the prefabricated blocks, they can be built in one go during the construction of secondary structure walls, saving material and labor costs and effectively improving construction progress and installation efficiency.

[0019] The application of prefabricated concealed junction box blocks in this mold device avoids the hidden dangers of masonry wall cracking and poor sound insulation, and greatly reduces the cost of homeowner complaints and wall crack repairs caused by poor sound insulation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model, showing the state of the outer surface;

[0021] Figure 2 This is a top view of the structure of this utility model, showing the state of the inner surface.

[0022] Reference numerals: 1. Precast steel mold; 11. Precast steel plate; 12. Cut steel plate; 13. Hinge; 2. Positioner; 21. Junction box assembly hole; 22. Positioning junction box; 23. Pipeline assembly hole; 3. Threaded fastener; 31. Bolt; 32. Nut; 33. Connecting piece. Detailed Implementation

[0023] The following is in conjunction with the appendix Figures 1-2 The present invention will be described in further detail below.

[0024] See Figures 1-2 A mold device for reusable prefabricated masonry wall concealed junction boxes includes a prefabricated steel mold 1, a locator 2, and threaded fasteners 3. The prefabricated steel mold 1 is composed of a prefabricated steel plate 11 and a cut steel plate 12 welded together by a hinge 13. The locator 2 consists of a hollow-bottomed positioning junction box 22, a junction box assembly hole 21, and a pipeline assembly hole 23. It is welded and fixed to the front and rear cut steel plates 12, protruding from the outer surface of the cut steel plates 12, and is used to position the junction box in the junction box assembly hole 21, so that the junction box protrudes from the wall surface. The threaded fasteners 3 consist of four sets of bolts 31 and nuts 32, which are welded and fixed to adjacent steel molds by connecting pieces 33, and are used for closing the prefabricated steel mold 1 and disassembling the junction box after prefabrication.

[0025] See Figure 1 The precast steel mold 1 consists of three 3mm thick square precast steel plates 11, each 190mm long and wide, and two 3mm thick square cut steel plates 12, each 190mm long and wide, with 90mm x 90mm holes cut in the middle. These are welded together by eight hinges 13, forming the enclosure component of the mold device and used to fabricate precast blocks for the junction box protection structure. The left, bottom, and right side templates of the precast steel mold 1 are composed of precast steel plates 11, while the front and rear side templates are composed of cut steel plates 12. The precast steel plates 11 and cut steel plates 12 are welded together by hinges 13. This reusable precast masonry wall concealed junction box mold device, due to its materials being sourced from the construction site and its simple structure, allows for large-scale on-site production. Furthermore, this mold device can be reused across multiple projects.

[0026] See Figure 1 The locator 2 consists of a 2mm thick, 45mm deep, hollow-bottomed positioning junction box 22, a junction box assembly hole 21, and a conduit assembly hole 23. The junction box assembly hole 21 has an opening diameter of 25mm. The positions of the junction box assembly hole 21 and the conduit assembly hole 23 are determined according to the size and location of the concealed junction box used on the construction site. The locator 2 is welded to the front and rear cut steel plates 12, protruding 10mm from the outer surface of the cut steel plates 12, and is used to position the concealed junction box in the junction box assembly hole 21. The locator 2 is used to position the junction box, improving the positioning accuracy of the junction box, enhancing aesthetics, and facilitating subsequent installation of switch or socket panels by operators. Meanwhile, the locator 2 positions the junction box 10mm above the wall surface, so that the precast junction box structure formed by the solidification of the cast-in-place concrete or lightweight aggregate foamed concrete also protrudes above the wall surface. In other words, the junction box is 10mm above the masonry wall surface, leaving space for subsequent plastering, puttying and other civil construction work. The locator 2 can prevent the junction box from sinking into the wall or being misaligned, making it easier for workers to install the panel. It also eliminates the need to use long bolts or add a sleeve for secondary fixation, reducing installation costs and improving the installation progress of the junction box.

[0027] See Figure 1 , Figure 2 Positioner 2 is welded and fixedly connected to precast steel mold 1, together forming the main structure of the mold device of this utility model. Before using cast-in-place concrete or lightweight aggregate foamed concrete for the prefabrication of the concealed junction box, a 50-100mm long electrical conduit must be pre-inserted into the conduit assembly hole 23. After the precast steel mold 1 is disassembled, it will be pre-embedded in the junction box precast block to facilitate later connection with the conduit concealed in the masonry wall.

[0028] See Figure 1 , Figure 2The threaded fastener 3 is used to close and disassemble the precast steel mold 1. After being tightened by bolt 31 and nut 32, cast-in-place concrete or lightweight aggregate foamed concrete can be filled into the precast steel mold 1. The concrete poured into the precast steel mold 1 is fully poured and compacted by manual vibration or vibration table. The concrete on the top of the mold only needs to be smoothed by hand with a trowel.

[0029] The poured concrete needs to be cured regularly for no less than 7 days, at least twice a day, to ensure that the concrete precast blocks of the junction box reach the required strength. After 7 days of curing, the precast steel mold 1 can be disassembled using threaded fasteners 3. The disassembled junction box precast blocks can then be used for the construction of secondary structural walls in the corresponding locations according to the pre-embedded positions specified in the electrical design drawings.

[0030] Furthermore, by adjusting the length of the prefabricated steel plate 11, the cut steel plate 12, and the reserved number of the locator 2, multiple application scenarios such as single junction boxes, parallel double junction boxes, and parallel triple junction boxes can be realized, thereby improving the accuracy of the pre-embedded position of the junction boxes.

[0031] It should also be noted that the prefabricated blocks of the concealed junction boxes, which are prefabricated in advance by the mold device of this utility model, are formed in one go during the construction of the secondary structure wall, thus avoiding the hidden dangers of wall cracking and poor sound insulation around the concealed junction boxes in the masonry wall. This greatly reduces the cost of homeowner complaints and wall crack repairs caused by poor sound insulation.

[0032] In the description of this utility model, it should be understood that the terms "length", "width", "depth", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, in the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mold device for a reusable prefabricated masonry wall concealed junction box, comprising a prefabricated steel mold (1), a locator (2), and threaded fasteners (3), characterized in that: The precast steel mold (1) includes a precast steel plate (11) and a cut steel plate (12). The precast steel plate (11) and the cut steel plate (12) are welded together by a hinge (13) to form the precast steel mold (1). The left, bottom and right side templates of the precast steel mold (1) are composed of the precast steel plate (11), and the front and rear side templates are composed of the cut steel plate (12). The cut steel plate (12) has a 90mm×90mm square hole cut in the middle. The precast steel plate (11) and the cut steel plate (12) are welded together by a hinge (13) and form a cube shape with an open top, which constitutes the enclosure component of the mold device. The rigidity of the precast steel plate (11) and the cut steel plate (12) should meet the requirements of the precast concrete of this mold device.

2. The mold device for a reusable prefabricated masonry wall concealed junction box according to claim 1, characterized in that: The locator (2) consists of a wire box assembly hole (21), a pipeline assembly hole (23) and a positioning wire box (22). The bottom of the positioning wire box (22) is hollow and is a square with a diameter of 90mm×90mm. The upper part has a pipeline assembly hole (23) with a diameter of 25mm.

3. The mold device for a reusable prefabricated masonry wall concealed junction box according to claim 1, characterized in that: The threaded fastener (3) welds the bolt (31) and nut (32) onto the precast steel mold (1) via a connecting piece (33).

4. The mold device for a reusable prefabricated masonry wall concealed junction box according to claim 1, characterized in that: By adjusting the length of the precast steel plate (11), the cut steel plate (12) and the reserved number of the locator (2), multiple scenarios of single junction box, parallel double junction box and parallel triple junction box can be realized. The length of the precast steel plate (11), the cut steel plate (12) and the reserved number of the locator (2) should be increased by multiples to improve the accuracy of the pre-embedded position of the junction box.

Images