A kind of welding-free surface boltless quick disassembly integral assembly type railing

Abstract

The application discloses a kind of welding-free surface boltless fast disassembly integral assembly type rail, including handrail and vertical rod, and the lower end of handrail and the top of vertical rod are thickened and have internal thread hole, and the connecting component between handrail and vertical rod includes bearing sleeve assembly, bolt and hollow capless screw, bearing sleeve assembly includes upper internal thread sleeve and lower internal thread sleeve, and can be rotatably connected by connecting bearing, first bolt is connected with the internal thread hole of the lower end of handrail by first hollow capless screw, and first hollow capless screw is connected with the internal thread of upper internal thread sleeve;Second bolt is connected with the internal thread hole of the top of vertical rod by second hollow capless screw, and second hollow capless screw is connected with the internal thread of lower internal thread sleeve.The application uses standard modular assembly type rail, and handrail, column can be separately disassembled, and hidden bolt design is used between connecting joint, surface boltless connection is realized, and the overall appearance and structural safety are ensured.

Description

Technical Field

[0001] This application pertains to the fields of construction and decoration, specifically relating to a weld-free, bolt-free, and quickly detachable prefabricated railing. Background Technology

[0002] In contemporary architectural decoration projects, railings, especially glass railings, are increasingly widely used, becoming an important element in modern architectural design. The two most common installation methods for glass railings on the market are bolted connections and welding. Welding the railing posts to the handrail components is the most common installation method; this approach is widely used and the technology is relatively mature. Using welding effectively ensures the structural strength and connection firmness of the railing, meeting certain safety performance requirements.

[0003] Although welding and bolting are widely used in railing installation, they still present some significant challenges. First, exposed bolts in bolted connections detract from the overall aesthetics of the railing, posing a challenge to the simplicity and beauty requirements of modern architecture. Second, welded connections require post-installation grinding and finishing of the joints, which not only affects the railing's appearance but can also lead to unstable connection quality if not handled properly. Furthermore, on-site welding is difficult to execute precisely, involves cumbersome installation procedures, and generates considerable construction waste, contradicting current promotion of environmentally friendly and efficient construction practices. These issues limit the further development of railing installation technology, particularly in modern building projects that prioritize aesthetics, safety, and construction efficiency. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a weld-free, boltless, and quickly detachable prefabricated railing. It adopts a standard modular prefabricated railing design, where handrails and posts can be disassembled and assembled individually. The connection nodes employ a hidden bolt design, achieving a boltless connection in appearance, ensuring overall aesthetics and structural safety. All nodes are weld-free, making it safe and reliable, and suitable for large-scale prefabrication in factories.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: A weld-free, boltless, and quickly detachable integrally assembled railing includes a handrail and uprights. The lower end of the handrail and the top end of the uprights are thickened and have internal threaded holes. A connecting assembly is provided between the handrail and the uprights. The connecting assembly includes a bearing sleeve assembly, bolts, and hollow headless screws. The bearing sleeve assembly includes an upper internal threaded sleeve and a lower internal threaded sleeve, which are rotatably connected by a connecting bearing. The bolts include a first bolt and a second bolt. The hollow headless screws include a first hollow headless screw and a second hollow headless screw. The first bolt passes through the first hollow headless screw and connects to the internal threaded hole at the lower end of the handrail. The first hollow headless screw is engaged with the internal thread of the upper internal threaded sleeve. The second bolt passes through the second hollow headless screw and connects to the internal threaded hole at the top end of the upright. The second hollow headless screw is engaged with the internal thread of the lower internal threaded sleeve.

[0006] Preferably, an internally threaded sleeve assembly, a third bolt, and a headless screw connector are provided between the upright and the bottom embedded part. The internally threaded sleeve assembly includes a ground sleeve and a transition sleeve. The third bolt passes through the ground sleeve and connects to the internally threaded hole at the bottom of the upright. The headless screw connector includes threaded portions at both ends, which respectively engage with the internal threads of the ground sleeve and the transition sleeve. The transition sleeve is connected to the bottom embedded part by a fixing bolt.

[0007] Preferably, the handrail, upright, upper internal threaded sleeve, lower internal threaded sleeve, ground sleeve, and transition sleeve are all made of stainless steel.

[0008] Preferably, the handrail is a circular handrail or an elliptical handrail, and a stainless steel gasket is provided between the handrail and the upper internal threaded sleeve.

[0009] Preferably, the handrail is square.

[0010] Preferably, the local thickness of the handrail connection is at least 5 mm, and the local thickness of the connection at both ends of the upright is at least 15 mm.

[0011] Preferably, the hollow capless screw has an inner diameter of 12mm and an outer diameter of 24mm.

[0012] Preferably, the first bolt, the second bolt, the third bolt, and the fixing bolt are all M12 bolts.

[0013] Preferably, the middle part of the headless screw connector is a threadless connection part, the upper and lower surfaces of which are flush with the floor decoration surface layer and respectively abut against the floor sleeve and the transition sleeve. The transition sleeve is located in the concrete pad layer, and the bottom embedded part is located in the reinforced concrete structural layer.

[0014] Preferably, the transition sleeve includes an upper internal threaded hole and a lower hollow hole.

[0015] The beneficial effects of this invention are as follows: Through concealed bolt connections, this invention achieves a bolt-free appearance, significantly improving the overall aesthetics of the railing. Simultaneously, it avoids welding processes, eliminating structural instability caused by welding and ensuring the safety and reliability of the railing. Various components of the railing, such as handrails and uprights, can be prefabricated and assembled in the factory, ensuring consistent product quality and high reliability. This prefabricated and modular approach reduces on-site work, lowers the labor intensity of construction workers, and accelerates construction progress. Furthermore, because components are prefabricated in the factory, it reduces material waste and construction debris caused by on-site processing, which is not only environmentally friendly but also optimizes the cost structure, making the railing system more economical. Due to the precise modular design, the installation accuracy of the railing system has been improved from centimeter-level to millimeter-level, significantly enhancing the overall quality and precision of the building. The modular design makes the railing system easy to install and disassemble, facilitating future maintenance and replacement. At the same time, this design allows for rapid adjustment and installation according to different design and environmental requirements, demonstrating a high degree of adaptability. Attached Figure Description

[0016] Figure 1 This is a schematic cross-sectional view of the weld-free, boltless, and quickly detachable prefabricated railing according to an embodiment of the present invention.

[0017] Figure 2 This is a schematic diagram from another angle of the weld-free, bolt-free, and quickly detachable integral prefabricated railing, as shown in an embodiment of the present invention.

[0018] Figure 3 This is a cross-sectional view of the top node of the railing shown in an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the vertical assembly of the top node of the railing according to an embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the bottom mounting node of the railing as shown in an embodiment of the present invention;

[0021] Figure 6 This is a part drawing of a headless screw connector according to an embodiment of the present invention;

[0022] Explanation of reference numerals in the attached drawings: 1-Handrail, 2-Upright pole, 3-Bearing sleeve assembly, 31-Upper internal thread sleeve, 32-Lower internal thread sleeve, 33-Connecting bearing, 4-Bolt, 41-First bolt, 42-Second bolt, 5-Hollow headless screw, 51-First hollow headless screw, 52-Second hollow headless screw, 6-Bottom embedded part, 7-Internal thread sleeve assembly, 71-Ground sleeve, 72-Transition sleeve, 8-Third bolt, 9-Headless screw connector, 91-Threaded part, 92-Threadless connection part, 10-Fixing bolt, 11-Stainless steel washer. Detailed Implementation

[0023] 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. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the present invention.

[0024] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0025] Please see Figure 1-4 This embodiment provides a specific construction method for a weld-free, boltless, and quickly assembled integral prefabricated railing. The railing consists of two parts: a handrail 1 and uprights 2. The lower end of the handrail 1 and the top end of the uprights 2 are thickened, and internal threaded holes are opened in the thickened parts to facilitate connection.

[0026] The handrail 1 and the upright 2 are connected by a connecting assembly, which includes a bearing sleeve assembly 3, bolts 4, and hollow capless screws 5. The bearing sleeve assembly 3 consists of an upper internal threaded sleeve 31 and a lower internal threaded sleeve 32, which are connected by a connecting bearing 33. This allows the upper internal threaded sleeve 31 and the lower internal threaded sleeve 32 to rotate relative to the connecting bearing 33, thereby allowing the handrail to be adjusted within a certain angle. This increases the flexibility and adaptability of the installation and avoids the associated rotation caused by the torsion of the upper and lower parts of the handrail during installation, which could lead to inaccurate installation.

[0027] There are two bolts 4, including a first bolt 41 and a second bolt 42. There are also two hollow headless screws 5, including a first hollow headless screw 51 and a second hollow headless screw 52. The hollow headless screw 5 has a central through hole. The first bolt 41 passes through the central through hole of the first hollow headless screw 51 and then connects to the internal threaded hole at the lower end of the handrail 1. The function of the first hollow headless screw 51 is to connect the first bolt 41 and the upper internal threaded sleeve 31. It mates with the internal thread of the upper internal threaded sleeve 31, thereby fixing the handrail 1 and the upper internal threaded sleeve 31. The first bolt 41 is hidden in the upper internal threaded sleeve 31 and the handrail 1.

[0028] Similarly, the second bolt 42 passes through the central through hole of the second hollow capless screw 52 and then connects to the internal threaded hole at the top of the upright 2. The function of the second hollow capless screw 52 is to connect the second bolt 42 to the lower internal threaded sleeve 32. The internal thread of the lower internal threaded sleeve 32 engages with the internal thread of the lower internal threaded sleeve 32 to ensure a stable connection between the upright 1 and the lower internal threaded sleeve 32. The second bolt 42 is hidden in the lower internal threaded sleeve 32 and the upright 2.

[0029] The upper internal threaded sleeve 31 and the lower internal threaded sleeve 32 include threaded and non-threaded sections. The threaded section is located on the sleeve opening side and engages with the hollow headless screw 5. The inner wall of the non-threaded section is smooth, accommodating the head of the bolt 4 and the end of the connecting bearing 33. This design eliminates the need for exposed bolts and welding during railing installation, resulting in a cleaner and more aesthetically pleasing overall appearance. The thickened handrail 1 and uprights 2 provide greater strength and stability. Furthermore, the use of the hollow headless screw 5 simplifies the installation process, allowing for quick disassembly and adjustment to adapt to different installation environments and needs, thus improving installation efficiency and convenience. This railing design not only optimizes the aesthetics and safety of the structure but also significantly improves production and installation efficiency through modular and standardized design, providing greater flexibility and practicality for modern architectural design.

[0030] Please see Figure 5-6Furthermore, an internally threaded sleeve assembly 7, a third bolt 8, and a headless screw connector 9 are provided between the upright 2 and the bottom embedded part 6, providing a stable and flexible structural connection. The connection between the upright 2 and the bottom embedded part 6 is achieved through an internally threaded sleeve assembly 7, which consists of a ground sleeve 71 and a transition sleeve 72. The third bolt 8 passes through the ground sleeve 71 and then connects to the internally threaded hole at the bottom end of the upright 2, allowing the upright 2 to be firmly connected to the ground sleeve 71, ensuring the verticality and stability of the upright 2, and also facilitating the installation and adjustment of the upright 2. The headless screw connector 9 includes threaded portions 91 at both ends. The thread at one end mates with the internal thread of the ground sleeve 71, and the thread at the other end mates with the internal thread of the transition sleeve 72. This double-ended thread design allows the headless screw connector 9 to firmly connect the ground sleeve 71 and the transition sleeve 72, facilitating construction and subsequent maintenance. The headless screw connector 9 is a concealed design, and the third bolt 8 is also hidden. The connection between the transition sleeve 72 and the bottom embedded part 6 is completed by fixing bolts 10. This method not only provides additional structural stability, but also makes the connection of the entire railing system from the upright 2 to the bottom embedded part 6 tighter and more uniform.

[0031] To ensure the durability and corrosion resistance of the railing system, stainless steel is preferably used for the handrail 1, uprights 2, upper internal threaded sleeve 31, lower internal threaded sleeve 32, ground sleeve 71, and transition sleeve 72. Stainless steel is widely used in outdoor construction and decoration due to its excellent corrosion resistance and mechanical strength. Using stainless steel ensures the railing system maintains stable performance under various climatic conditions, while also being easy to clean and maintain, significantly extending the railing's service life.

[0032] The handrail 2 is designed with various shapes to suit different architectural styles and user preferences, including round, oval, and square handrails. To further enhance connection stability and overall precision, stainless steel washers 11 can be placed between the handrail 2 and the upper internal threaded sleeve 31, as the bottoms of round and oval handrails are uneven. This improves the tightness of the connection between the handrail and the sleeve, prevents wobbling, and enhances the durability of the entire connection structure. For square handrails, which have a flat bottom, stainless steel washers are not required.

[0033] In terms of dimensional design, the local thickness at the connection point of the handrail 1 in this railing system is designed to be at least 5mm. This thickened design enhances the contact area and joint strength between the handrail and the connecting components, thereby improving the stability and load-bearing capacity of the entire connection. Similarly, the local thickness at the connection points at both ends of the upright 2 is also designed to be at least 15mm. This thickening treatment ensures the structural stability between the upright 2 and the ground or top connecting components. The hollow headless screw 5 has an inner diameter of 12mm and an outer diameter of 24mm. This hollow headless screw 5 not only has a lower weight due to its hollow design, but also provides sufficient strength to support the connection between the bolt and the sleeve. The first bolt 41, the second bolt 42, the third bolt 8, and the fixing bolt 10 are all M12 bolts. The 12mm inner diameter of the hollow headless screw allows the first bolt 41 and the second bolt 42 to pass through smoothly, while the 24mm outer diameter ensures sufficient wall thickness to maintain the stability of the connection and prevent the screw from deforming under pressure. The circular handrail 1 can be designed with a diameter of φ63 and a wall thickness of 2mm, and the upright 2 can be designed with a cross section of 50×50mm and a wall thickness of 5mm.

[0034] The headless screw connector 9 also includes a central threadless connection portion 92, allowing for a tighter and smoother fit with the railing system during installation. The upper and lower surfaces of the threadless connection portion 92 are flush with the floor finish. For example, when using a 20mm thick granite surface, the threadless connection portion 92 can be designed to be 20mm thick. This improves the overall aesthetics after installation and ensures that after the threaded portion 91 of the headless screw connector 9 is threadedly connected to the ground sleeve 71 and transition sleeve 72, the threadless connection portion 92 tightly abuts against the end faces of these components, thus enhancing the stability and uniformity of the entire connection structure. The transition sleeve 72 is located in the concrete cushion layer, and the bottom embedded part 6 is located in the reinforced concrete structural layer. The transition sleeve 72 is designed with an upper internal threaded hole and a lower hollow hole. The internal threaded hole is used to mate with the threaded portion of the headless screw connector 92 to achieve a stable mechanical connection. The lower hollow hole allows the transition sleeve 72 to have a larger adjustment gap and alignment space during installation, which can adapt to various installation depths and conditions, improving the flexibility and adaptability of installation. The existence of the hollow hole allows the position of the internal threaded hole of the transition sleeve 72 and the lower threaded portion of the headless screw connector 92 to be flexibly adjusted. Thus, the transition sleeve 72 has a large range of movement and adjustment in the vertical direction. Installers can adjust the position of the transition sleeve according to the actual situation to adapt to different heights of the ground or the bottom structural layer, reducing construction errors between the backfill layer and the structural slab.

[0035] In summary, this invention achieves a bolt-free railing surface by using concealed bolt connections and an internally threaded sleeve assembly, significantly improving the overall aesthetics of the railing. Simultaneously, it avoids welding, eliminating the structural instability and safety hazards that welding can cause. The main components of the railing, such as the handrails and uprights, adopt a standard modular design, supporting quick disassembly and flexible assembly. This design makes the installation, adjustment, and maintenance of the railing more convenient, significantly improving construction efficiency and flexibility. All major components, such as handrails, uprights, and upper and lower internally threaded sleeves, are made of stainless steel, possessing excellent corrosion resistance and durability, suitable for long-term use. The prefabricated component design reduces on-site processing, lowers material waste and construction waste generation, meeting environmental protection and sustainable development requirements. Through carefully designed connection components, such as headless screw connectors and transition sleeves, a high-precision installation solution is provided. In particular, the design of the threadless connection makes the ground surface smoother, avoiding potential safety risks caused by protruding connection parts.

[0036] The railing system of this invention can be quickly adjusted and installed according to different design and environmental requirements, demonstrating a high degree of adaptability. The modular design also makes future maintenance and replacement work simpler and more convenient. The standardized and prefabricated production method not only improves the efficiency of production and installation, but also optimizes the cost structure and ensures the overall aesthetics of the railing. The railing installation method of this invention can be widely applied to the installation of railings in various architectural spaces, including public buildings, civil buildings, and industrial buildings.

[0037] The examples above are merely illustrative of the invention and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations, and any obvious variations or modifications derived therefrom are still within the scope of this invention.

Claims

1. A weld-free, boltless, quick-assembly and disassembly integrated railing, comprising a handrail (1) and uprights (2), wherein the lower end of the handrail (1) and the top end of the uprights (2) are both thickened and have internal threaded holes, characterized in that, A connecting assembly is provided between the handrail (1) and the upright (2). The connecting assembly includes a bearing sleeve assembly (3), a bolt (4), and a hollow capless screw (5). The bearing sleeve assembly (3) includes an upper internal thread sleeve (31) and a lower internal thread sleeve (32), which are rotatably connected by a connecting bearing (33). The bolt (4) includes a first bolt (41) and a second bolt (42). The hollow capless screw (5) includes a first bolt (41) and a second bolt (42). Hollow capless screw (51) and second hollow capless screw (52), the first bolt (41) passes through the first hollow capless screw (51) and connects to the internal thread hole at the lower end of the handrail (1), the first hollow capless screw (51) is connected to the internal thread of the upper internal thread sleeve (31); the second bolt (42) passes through the second hollow capless screw (52) and connects to the internal thread hole at the top of the upright (2), the second hollow capless screw (52) is connected to the internal thread of the lower internal thread sleeve (32).

2. The weld-free, boltless, quick-assembly and disassembly integrated prefabricated railing according to claim 1, characterized in that, An internal threaded sleeve assembly (7), a third bolt (8), and a capless screw connector (9) are provided between the upright (2) and the bottom embedded part (6). The internal threaded sleeve assembly (7) includes a ground sleeve (71) and a transition sleeve (72). The third bolt (8) passes through the ground sleeve (71) and connects to the internal threaded hole at the bottom of the upright (2). The capless screw connector (9) includes threaded portions (91) at both ends, which respectively engage with the internal threads of the ground sleeve (71) and the transition sleeve (72). The transition sleeve (72) is connected to the bottom embedded part (6) by a fixing bolt (10).

3. The weld-free, boltless, quick-assembly and disassembly integrated prefabricated railing according to claim 1 or 2, characterized in that, The handrail (1), upright (2), upper internal threaded sleeve (31), lower internal threaded sleeve (32), ground sleeve (71) and transition sleeve (72) are all made of stainless steel.

4. The weld-free, boltless, quick-assembly and disassembly integrated prefabricated railing according to claim 3, characterized in that, The handrail (1) is a round handrail or an elliptical handrail, and a stainless steel gasket (11) is provided between the handrail (1) and the upper internal threaded sleeve (31).

5. The weld-free, boltless, quick-assembly and disassembly integrated prefabricated railing according to claim 3, characterized in that, The handrail (1) is square.

6. The weld-free, boltless, quick-assembly and disassembly integrated prefabricated railing according to claim 3, characterized in that, The local thickness of the handrail (1) at the connection point is at least 5 mm, and the local thickness of the connection point at both ends of the upright (2) is at least 15 mm.

7. The weld-free, boltless, quick-assembly and disassembly integrated prefabricated railing according to claim 3, characterized in that, The hollow capless screw (5) has an inner diameter of 12mm and an outer diameter of 24mm.

8. The weld-free, boltless, quick-assembly and disassembly integrated prefabricated railing according to claim 3, characterized in that, The first bolt (41), the second bolt (42), the third bolt (8) and the fixing bolt (10) are all M12 bolts.

9. The weld-free, boltless, quick-assembly and disassembly integrated prefabricated railing according to claim 2, characterized in that, The middle part of the capless screw connector (9) is a threadless connection part (92). The upper and lower surfaces of the threadless connection part (92) are flush with the floor decoration surface layer and respectively abut against the floor sleeve (71) and the transition sleeve (72). The transition sleeve (72) is located in the concrete cushion layer, and the bottom embedded part (6) is located in the reinforced concrete structure layer.

10. The weld-free, boltless, quick-assembly and disassembly integrated prefabricated railing according to claim 8, characterized in that, The transition sleeve (72) includes an upper internal threaded hole and a lower hollow hole.

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