A prefabricated building prefabricated balcony rapid butt joint installation system
By combining the main precast slab, hanging components, and side support components, the problems of complex installation, insufficient structural stability, and poor aesthetics of precast balconies are solved. This achieves rapid installation, improved structural stability and corrosion resistance, and enhances construction efficiency and effectiveness. It is applied to the rapid docking system for prefabricated balconies in buildings.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENJIANG ATLANTIC MODULAR SYSTEM LIMITED
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-14
AI Technical Summary
Existing prefabricated balconies are complex to install, lack structural stability, have poor corrosion resistance, and are not aesthetically pleasing, which affects construction progress and safety performance.
The design adopts a combination of main precast slabs, hanging components and side supports. It utilizes pre-embedded nuts and modular parts, and achieves rapid connection through bolts. The hanging components adopt a three-section structure to enhance stability, and decorative panels and side supports form an enclosed space to prevent corrosion.
It enables rapid installation, improves structural stability and corrosion resistance, enhances construction efficiency and aesthetics, and extends service life.
Smart Images

Figure CN224495382U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a rapid connection and installation system for prefabricated balconies in prefabricated buildings. Background Technology
[0002] With the rapid development of industrialized construction, prefabricated buildings are increasingly widely used in the construction industry due to their advantages such as high construction efficiency, good environmental performance, and easy quality control. As an important component of prefabricated buildings, the installation efficiency and structural stability of prefabricated balconies directly affect the overall construction progress and safety performance of the building.
[0003] Currently, the installation of prefabricated balconies mostly uses traditional support and connection methods, which have the following problems:
[0004] The installation process is complex: traditional prefabricated balconies require multiple adjustments to their position during connection, rely on a large number of temporary supports, and involve complicated installation steps that take a long time, seriously affecting the construction progress.
[0005] Insufficient structural stability: Existing connection structures are mostly fixed at a single point or a few points, which is difficult to effectively resist the tilting trend caused by the balcony's own weight and external loads (such as wind force and earthquake force). Long-term use is prone to safety hazards such as loosening and deformation.
[0006] Poor corrosion resistance: Connecting components (such as bolts, beams, etc.) are mostly exposed to the external environment and are susceptible to corrosion from rainwater, moisture and corrosive media, which leads to component corrosion, reduced strength and shortened service life.
[0007] Aesthetic shortcomings: Exposed connecting parts affect the overall appearance of the balcony, requiring additional decoration work later, which increases construction costs and workload.
[0008] To address the aforementioned issues, there is an urgent need in this field for a prefabricated balcony quick-connection installation system that is easy to install, structurally stable, highly resistant to corrosion, and aesthetically pleasing. Utility Model Content
[0009] The purpose of this invention is to solve the problems of complex installation, insufficient structural stability, poor corrosion resistance and lack of aesthetics in the existing technology of prefabricated balconies, and to provide a rapid docking and installation system for prefabricated balconies in prefabricated buildings.
[0010] A rapid docking and installation system for prefabricated balconies in prefabricated buildings includes a main prefabricated slab, hanging components, and side support components; the right end of the main prefabricated slab is embedded inside the prefabricated building, and several pre-embedded first nuts are provided at the bottom of the main prefabricated slab.
[0011] The top of the hanging component is connected to the bottom of the main precast slab by means of a first bolt and a first nut, and the bottom of the hanging component is connected to the side support. The side support is L-shaped, with several second through holes on the short side of the L-shape, and several second bolts passing through the second through holes and connected to the second nuts. The long side of the L-shape abuts against the outer wall of the wall.
[0012] Furthermore, the hanging component includes an upper horizontal beam, a vertical beam, and a lower horizontal beam. The upper horizontal beam has a first through hole in its middle, through which several first bolts pass and are connected to first nuts. The right end of the upper horizontal beam is connected to the top of the vertical beam, and the bottom of the vertical beam is connected to the middle of the lower horizontal beam. Several second nuts are provided on the lower surface of the right half of the lower horizontal beam. This three-section structural design of the hanging component can evenly distribute the load, thereby improving the connection stability between the prefabricated balcony and the main building structure.
[0013] Furthermore, both the hanging component and the side support are made of metal. The upper, vertical, and lower crossbeams of the hanging component are integrally formed or fixedly connected by welding. The use of metal not only improves load-bearing capacity but also extends the overall service life of the device.
[0014] Furthermore, a decorative panel is connected to the bottom of the main precast slab. One side of the decorative panel is connected to the bottom of the main precast slab, and the other side of the decorative panel is connected to the short side of the side support member away from the wall. The decorative panel and the side support member together form a sheltered space to cover the hanging components. The decorative panel and the side support member cooperate to form a closed space, covering the hanging components and connecting bolts, preventing direct corrosion from rainwater and moisture, and can significantly extend the service life of the system.
[0015] Furthermore, the decorative panel is made of lightweight alloy or PVC, and its outer surface is coated with an anti-corrosion and wear-resistant coating. The decorative panel is connected to the main precast slab via a snap-fit connection or a bolt connection. Alloy materials offer strong corrosion resistance, and the anti-corrosion coating further enhances their anti-aging properties. PVC materials, on the other hand, offer advantages such as low cost, easy processing, and excellent chemical stability, making them suitable for cost-sensitive applications. Both materials can meet the needs of different projects.
[0016] Furthermore, the number of the first through holes corresponds one-to-one with the number of the first nuts, and the first through holes are evenly distributed along the length of the upper crossbeam, with a spacing of 150-300mm between adjacent first through holes; the number of the second through holes corresponds one-to-one with the number of second nuts, and the second through holes are evenly distributed along the length of the shorter side of the side support, with a spacing of 100-200mm between adjacent second through holes. During installation, workers can directly insert bolts according to the hole positions without on-site measurement and adjustment, greatly improving installation efficiency and reducing the impact of human error on connection quality.
[0017] Furthermore, an anti-slip pad is provided between the short side of the side support member and the lower surface of the lower crossbeam. The anti-slip pad is made of rubber and has a thickness of 2-5mm. An elastic pad is provided at the long side of the side support member. The elastic pad abuts against the outside of the wall to compensate for errors caused by unevenness of the wall.
[0018] Beneficial effects:
[0019] This system, with its pre-embedded nuts, pre-drilled holes, and modular component design, requires only bolts to connect the components during installation, eliminating the need for complex adjustments and temporary supports. This significantly reduces installation time and improves construction efficiency.
[0020] Meanwhile, the hanging components are connected to the main precast slab through multiple bolts, and the side supports are connected to the hanging components and the wall through an L-shaped structure, forming a stable force-bearing system of "main precast slab-hanging components-side supports-wall", which can effectively resist the tilting trend of the main precast slab and significantly improve the load-bearing capacity. Attached Figure Description
[0021] Figure 1 This is a structural diagram of a prefabricated balcony installed inside a wall.
[0022] Figure 2 This is an exploded view of the bottom connection structure of a prefabricated balcony;
[0023] Figure 3 This is a structural diagram of the hanging components;
[0024] 1. Main precast slab, 11. First nut, 2. Hanging component, 21. Second nut, 22. Upper crossbeam, 23. Vertical beam, 24. Lower crossbeam, 25. First through hole, 3. Decorative panel, 4. Side support component. Detailed Implementation
[0025] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.
[0026] Example 1: As Figure 1-3 As shown, a prefabricated balcony quick-connection and installation system for prefabricated buildings includes a main prefabricated slab 1, a hanging component 2, and a side support component 4.
[0027] The main precast slab 1 is made of C30 reinforced concrete and its right end is embedded in the wall of the prefabricated building. The bottom of the main precast slab 1 is provided with embedded parts, and there are seven embedded first nuts 11 in the embedded parts. These nuts are pre-embedded in the bottom of the main precast slab 1 during the pouring of the main precast slab 1. The upper surface of the embedded block is flush with the inner bottom of the main precast slab 1.
[0028] The hanging component 2 is a metal part, including an upper crossbeam 22, a vertical beam 23, and a lower crossbeam 24, which are fixedly connected by welding (the weld joints are ground smooth and coated with anti-rust paint). The upper crossbeam has seven first through holes 25 in the middle, which are evenly distributed along the length of the upper crossbeam 22 with an adjacent spacing of 200mm. Seven first bolts (not shown in the figure) pass through the first through holes 25 and are threaded to the first nuts 11 to fix the hanging component 2 to the bottom of the main precast slab 1.
[0029] The top of the vertical beam 23 is welded to the right end of the upper crossbeam 22, and the bottom is welded to the middle of the lower crossbeam 24. Seven second nuts 21 are provided on the lower surface of the right half of the lower crossbeam 24, and the seven second nuts 21 are evenly distributed along the length of the lower crossbeam 24.
[0030] The side support 4 is L-shaped, with seven second through holes on the short side of the L-shape. Each second through hole corresponds to a second nut 21. The seven second bolts pass through the second through holes and are threaded to the second nuts 21 to fix the side support 4 to the bottom of the lower crossbeam 24. An anti-slip pad (not shown in the figure) is provided between the short side of the side support 4 and the lower surface of the lower crossbeam 24, and the long side abuts against the outer wall of the wall.
[0031] The bottom of the main precast slab 1 is also connected to a decorative panel 3. The decorative panel 3 is made of aluminum alloy and has an anti-corrosion coating sprayed on its outer surface. One side of the decorative panel 3 is connected to the bottom of the main precast slab 1 by a buckle, and the other side is connected to the end of the side support 4 away from the wall. Together with the side support 4, they form a closed space to cover the hanging component 2.
[0032] Installation steps:
[0033] S1. Prefabrication preparation: Prefabricate the main prefabricated slab 1 (including embedded blocks and first nuts 11), hanging components 2, side support components 4 and decorative panels 3 in advance, and conduct quality inspection.
[0034] S2. Installation of main precast slab: Hoist the main precast slab 1 to the installation position, embed its right end into the building wall, adjust the level and fix it by pouring concrete.
[0035] S3. Installation of hanging components: Hoist the hanging component 2 to the bottom of the main precast slab 1, align the first through hole 25 of the upper crossbeam 22 with the first nut 11, insert the first bolt and tighten it to fix it.
[0036] S4. Side support installation: Place an anti-slip pad between the short side of the side support 4 and the lower crossbeam 24, align the second through hole and the second nut 21, insert the second bolt and tighten it so that the long side of the side support 4 is in close contact with the outer wall of the wall.
[0037] S5. Decorative panel installation: Connect one side of the decorative panel 3 to the bottom of the main precast slab 1, and the other side to the short side of the side support 4 to complete the installation.
[0038] In this type of prefabricated balcony, all components are prefabricated, lightweight, and easy to transport and hoist; the connection method is simple, and ordinary construction workers can operate it after simple training, which can greatly improve installation efficiency and reduce reliance on professional skills.
[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A rapid assembly system for prefabricated balconies in prefabricated buildings, characterized in that, It includes a main precast slab, hanging components, and side support components; the right end of the main precast slab is embedded in the interior of the prefabricated building, and several pre-embedded first nuts are provided at the bottom of the main precast slab; The top of the hanging component is connected to the bottom of the main precast slab by means of a first bolt and a first nut, and the bottom of the hanging component is connected to the side support. The side support is L-shaped, with several second through holes on the short side of the L-shape, and several second bolts passing through the second through holes and connected to the second nuts. The long side of the L-shape abuts against the outer wall of the wall.
2. The prefabricated balcony rapid connection and installation system for prefabricated buildings according to claim 1, characterized in that, The hanging component includes an upper crossbeam, a vertical beam, and a lower crossbeam. The upper crossbeam has a first through hole in the middle, through which several first bolts pass and are connected to first nuts. The right end of the upper crossbeam is connected to the top of the vertical beam, and the bottom of the vertical beam is connected to the middle of the lower crossbeam. The lower surface of the right half of the lower crossbeam has several second nuts.
3. The prefabricated balcony rapid connection and installation system for prefabricated buildings according to claim 2, characterized in that, The hanging components and side supports are all made of metal. The upper horizontal beam, vertical beam and lower horizontal beam of the hanging components are integrally formed structures or are fixedly connected by welding.
4. The prefabricated balcony rapid connection and installation system for prefabricated buildings according to claim 3, characterized in that, A decorative panel is also connected to the bottom of the main precast slab. One side of the decorative panel is connected to the bottom of the main precast slab, and the other side of the decorative panel is connected to the short side of the side support member away from the wall. The decorative panel and the side support member together form a shielding space for shielding the hanging components.
5. The prefabricated balcony quick-connection and installation system for prefabricated buildings according to claim 4, characterized in that, The decorative panel is made of lightweight alloy or PVC, and its outer surface is coated with an anti-corrosion and wear-resistant coating. The decorative panel is connected to the main precast panel by a snap-fit connection or a bolt connection.
6. The prefabricated balcony rapid connection and installation system for prefabricated buildings according to claim 3, characterized in that, The number of the first through holes corresponds one-to-one with the number of the first nuts, and the first through holes are evenly distributed along the length of the upper crossbeam, with a spacing of 150-300mm between two adjacent first through holes; the number of the second through holes corresponds one-to-one with the number of the second nuts, and the second through holes are evenly distributed along the length of the short side of the side support, with a spacing of 100-200mm between two adjacent second through holes.
7. The prefabricated balcony rapid connection and installation system for prefabricated buildings according to claim 3, characterized in that, An anti-slip pad is provided between the short side of the side support and the lower surface of the lower crossbeam. The anti-slip pad is made of rubber and has a thickness of 2-5mm. An elastic pad is provided at the long side of the side support. The elastic pad abuts against the outside of the wall to compensate for errors caused by unevenness of the wall.