Fastening device for an aluminum-wood junction
The combination of L-shaped screws and metal nails solves the problem of complicated aluminum-wood formwork connections, achieving a highly efficient and stable formwork system and improving construction efficiency and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE THIRD CONSTR ENG CO LTD OF CHINA CONSTR SECOND ENG BUREAU
- Filing Date
- 2025-07-09
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional aluminum-wood formwork connection methods are cumbersome to operate and prone to misalignment, resulting in low construction efficiency and unstable quality.
The aluminum-wood template is fastened by a combination of L-shaped screws, L-shaped plates, connectors, limiting components, metal nails, and wooden blocks. The connection is achieved through threaded connection and metal nail engagement, which simplifies the operation process and improves stability.
It achieves a tight connection of aluminum-wood formwork, improves construction efficiency, reduces material waste, ensures concrete molding quality, simplifies operation, and increases turnover rate.
Smart Images
Figure CN224532235U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building construction technology, and in particular to a fastening device for aluminum-wood joints. Background Technology
[0002] In the construction of high-rise residential and commercial buildings, aluminum alloy formwork is widely used due to its advantages such as good concrete forming effect, high turnover efficiency, and less construction waste. When used in non-standard floors, a combination of aluminum and wooden formwork is often chosen to reduce material costs. Traditionally, aluminum and wooden formwork are connected and fixed using bolts and nuts.
[0003] Traditional open-type technology uses connecting bolts and nuts to connect and fix aluminum-wood formwork. During construction, the bolts need to be tightened manually with a wrench, which is cumbersome, inefficient, and prone to misalignment if not handled properly. Utility Model Content
[0004] To overcome the problems existing in the prior art, this utility model provides a fastening device for the aluminum-wood joint. This device reinforces the aluminum-wood formwork in one step, eliminating problems such as concrete misalignment caused by inadequate reinforcement, enabling the reuse of materials, and improving construction efficiency and quality.
[0005] A fastening device for an aluminum-wood joint includes an L-shaped screw, an L-shaped plate, a connector, a limiting member, a metal nail, and a wooden block. The connector is sleeved on the vertical rod of the L-shaped screw, and the limiting member is sleeved on the vertical rod of the L-shaped screw, located below the connector to restrict its movement. The connector is fixedly connected to one side of the vertical plate of the L-shaped plate, and the bottom surface of the connector is flush with the horizontal plate of the L-shaped plate. The head of the metal nail is fixed to the horizontal plate of the L-shaped plate. One side of the wooden block is in close contact with a wooden template, and the bottom surface of the wooden block is in close contact with an aluminum template. A pre-drilled hole is provided on the aluminum template. The horizontal rod of the L-shaped screw is attached to the top surface of the wooden block, and the other side of the vertical plate of the L-shaped plate is attached to the other side of the wooden block. The tip of the metal nail passes through the pre-drilled hole and engages with the bottom surface of the wooden block, thus fastening the horizontal plate of the L-shaped plate to the aluminum template.
[0006] Furthermore, the vertical rod of the L-shaped screw is provided with threads, the limiting member is a nut, the connecting member is a sleeve, the sleeve is sleeved on the vertical rod of the L-shaped screw, the nut is connected to the vertical part of the L-shaped screw by threads, the nut is located below the sleeve, and the sleeve is welded to one side of the vertical plate of the L-shaped plate.
[0007] Furthermore, the thread length is between 15cm and 25cm.
[0008] Furthermore, the L-shaped plate is an angle iron, and the head of a metal nail is welded to the horizontal wing of the angle iron. One side of the vertical wing of the angle iron is welded to the sleeve, and the other side of the vertical wing of the angle iron is attached to the other side of the wooden block. The head of a fixed metal nail is welded to the horizontal wing of the angle iron. The horizontal wing of the angle iron and the aluminum template are locked together and fastened to the bottom surface of the wooden block by the tip of the metal nail passing through the reserved hole.
[0009] Furthermore, the bottom surface of the sleeve is flush with the horizontal flange of the angle iron.
[0010] Furthermore, the metal nail is an iron nail.
[0011] The beneficial effects of this utility model are as follows:
[0012] (1) This utility model tightly connects aluminum formwork and wooden formwork to form a formwork system, reducing the need for large-area material changes throughout the layer due to structural changes, saving construction costs and shortening the construction period;
[0013] (2) This utility model has safe and reliable strength and stability, and the concrete molding quality is good after construction, which reduces the subsequent problems of concrete defect treatment;
[0014] (3) This utility model is easy to operate, and can be industrialized after in-depth design. It has good processing quality, is easy to install and disassemble, and has a high turnover rate. Attached Figure Description
[0015] Figure 1 This is a cross-sectional structural schematic diagram of an embodiment of a fastening device for an aluminum-wood joint according to this utility model;
[0016] Figure 2 This is a schematic diagram of the disassembled components in an embodiment of a fastening device for an aluminum-wood joint of this utility model.
[0017] Explanation of symbols in the attached diagram:
[0018] 1. L-shaped screw, 2. L-shaped plate, 3. Limiting component, 4. L-shaped plate, 5. Metal nail, 6. Wooden template, 7. Timber, 8. Aluminum template, 9. Screw. Detailed Implementation
[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0020] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual images. They should not be construed as limiting the scope of this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.
[0021] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.
[0022] In the description of this patent, unless otherwise explicitly specified and limited, the term "connection" or similar designation indicating a connection between components should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0023] A fastening device for the aluminum-wood joint, such as Figures 1 to 2 As shown, the assembly includes an L-shaped screw 1, an L-shaped plate 4, a connector 2, a limiting member 3, a metal nail 5, and a wooden block 7. The connector 2 is sleeved on the vertical rod of the L-shaped screw 1, and the limiting member 3 is sleeved on the vertical rod of the L-shaped screw 1, located below the connector 2 to restrict its movement. The connector 2 is fixedly connected to one side of the vertical plate of the L-shaped plate 4, and the bottom surface of the connector 2 is flush with the horizontal plate of the L-shaped plate 4. The head of the metal nail 5 is fixed to the horizontal plate of the L-shaped plate. One side of the wooden block 7 is tightly attached to the wooden template 6, and the bottom surface of the wooden block is tightly attached to the aluminum template 8. The aluminum template 8 has a pre-drilled hole. The horizontal rod of the L-shaped screw 1 is attached to the top surface of the wooden block 7, and the other side of the vertical plate of the L-shaped plate 1 is attached to the other side of the wooden block 7. The metal nail 5 passes through the pre-drilled hole of the aluminum template 8 and engages with the bottom surface of the wooden block 7, thus firmly attaching the horizontal plate of the L-shaped plate 1 to the aluminum template 8.
[0024] This utility model's fastening device installs fastening devices at 900mm intervals along the joint between the wooden and aluminum templates to secure them into a system. In this embodiment, the fastening device is an L-shaped screw 1 made of 14-16mm diameter round steel. The vertical length of the L-shaped screw 1 is 20-25cm, and the horizontal length is 3-5cm. A connector 2 is fitted onto the vertical rod of the L-shaped screw 1, and then a limiting member 3 is placed below the connector 2 and fixed to the vertical rod of the L-shaped screw 1 to restrict the movement of the connector 2. One side of the vertical plate of the L-shaped plate 4 is fixedly connected to the connector 2, and the bottom surface of the connector 2 is flush with the horizontal plate of the L-shaped plate 4, within the same horizontal plane. The head of a metal nail 5 is fixed to the horizontal plate of the L-shaped plate 4. Attach one side of the timber 7 to the wooden formwork 6, and the bottom surface of the timber 7 to the aluminum formwork. Attach the horizontal bar of the L-shaped screw 1 to the top surface of the timber 7. Hang the entire fastening device on the timber 7. Position the horizontal plate of the L-shaped plate 4 close to the bottom of the aluminum formwork. Pass the pointed end of the metal nail 5 on the horizontal plate of the L-shaped plate 4 through the pre-drilled hole in the aluminum formwork 8, and engage it with the timber 7 to attach the horizontal plate of the L-shaped plate 4 to the bottom of the aluminum formwork 8. This completes the fastening of the joint between the aluminum formwork and the wooden formwork. Compared with existing technologies, this utility model uses bolt mechanical fastening, which is stable, reliable, and not easily loosened. The structure is simple and lightweight, easy to operate, process, and install, highly practical, and improves the efficiency of formwork installation.
[0025] Furthermore, such as Figure 1 As shown, the vertical rod of the L-shaped screw 1 is threaded. The limiting member 3 is a nut, and the connecting member 2 is a sleeve. The sleeve is fitted onto the vertical rod of the L-shaped screw 1. The nut is threaded to the vertical rod of the L-shaped screw 1, and the nut is located below the sleeve. The sleeve is welded to one side of the vertical plate of the L-shaped plate 4. The vertical rod of the L-shaped screw 1 is threaded with thread 9. The limiting member 3 is a nut, and the nut 9 matches the thread. The diameter of the sleeve is 2mm larger than the diameter of the L-shaped screw. The sleeve is fitted onto the vertical rod of the L-shaped screw 1, and then the nut is screwed onto the vertical rod of the L-shaped screw 1 along the screw 9 to position the sleeve.
[0026] Furthermore, such as Figures 1 to 2 As shown, the length of the thread 9 is between 15cm and 25cm. The nut can move within this length range, allowing the elevation control error between the aluminum and wooden templates to be within 2mm.
[0027] Furthermore, such as Figures 1 to 2As shown, the L-shaped plate 4 is an angle iron. The heads of metal nails are welded to the horizontal flange of the angle iron. One side of the vertical flange of the angle iron is welded to the sleeve. The heads of fixing metal nails 5 are welded to the horizontal flange of the angle iron. The other side of the vertical flange of the angle iron is attached to the other side of the wooden block 7. The horizontal flange of the angle iron and the aluminum template 8 are fastened together by the pointed ends of the metal nails 5 passing through pre-drilled holes and engaging with the bottom surface of the wooden block 7. In this embodiment, the L-shaped plate 4 is an angle iron with a thickness of 1.5-2.5mm. The length of the metal nails 5 is 5-10mm.
[0028] Furthermore, such as Figures 1 to 2 As shown, the bottom surface of the sleeve is flush with the horizontal flange of the angle iron.
[0029] Furthermore, such as Figures 1 to 2 As shown, the metal nail can be an iron nail.
[0030] It should be stated that the above-described specific embodiments are merely preferred embodiments of this utility model and the technical principles employed. Those skilled in the art should understand that various modifications, equivalent substitutions, and variations can be made to this utility model. However, such variations, as long as they do not depart from the spirit of this utility model, should be within the protection scope of this utility model. Furthermore, some terminology used in this application specification and claims is not limiting, but merely for ease of description.
Claims
1. A fastening device for an aluminum-wood joint, characterized in that, The system includes an L-shaped screw (1), an L-shaped plate (4), a connector (2), a limiting member (3), a metal nail (5), and a wooden block (7). The connector (2) is fitted onto the vertical rod of the L-shaped screw (1), and the limiting member (3) is fitted onto the vertical rod of the L-shaped screw (1) and located below the connector (2) to restrict its movement. The connector (2) is fixedly connected to one side of the vertical plate of the L-shaped plate (4), and the bottom surface of the connector (2) is flush with the horizontal plate of the L-shaped plate (4). The metal nail... (5) The nail head is fixed on the horizontal plate of the L-shaped plate. One side of the wooden block (7) is close to the wooden template (6), and the bottom surface of the wooden block is close to the aluminum template (8). The aluminum template (8) is provided with a reserved hole. The horizontal bar of the L-shaped screw (1) is attached to the top surface of the wooden block (7). The other side of the vertical plate of the L-shaped plate (1) is attached to the other side of the wooden block (7). The tip of the metal nail (5) passes through the reserved hole and bites the bottom surface of the wooden block (7), thus firmly attaching the horizontal plate of the L-shaped plate (4) to the aluminum template (8).
2. The fastening device for the aluminum-wood joint according to claim 1, characterized in that, The vertical rod of the L-shaped screw (1) is provided with a thread (9), the limiting member (3) is a nut, the connecting member (2) is a sleeve, the sleeve is sleeved on the vertical rod of the L-shaped screw (1), the nut is connected to the vertical rod of the L-shaped screw (1) by the thread (9), the nut is located below the sleeve, and the sleeve is welded to one side of the vertical plate of the L-shaped plate (4).
3. The fastening device for the aluminum-wood joint according to claim 2, characterized in that, The length of the thread (9) is between 15cm and 25cm.
4. The fastening device for the aluminum-wood joint according to claim 2, characterized in that, The L-shaped plate (4) is an angle iron. The head of a metal nail is welded to the horizontal wing of the angle iron. One side of the vertical wing of the angle iron is welded to the sleeve. The other side of the vertical wing of the angle iron is attached to the other side of the wooden block (7). The head of a fixed metal nail (5) is welded to the horizontal wing of the angle iron. The horizontal wing of the angle iron and the aluminum template (8) are tightly attached to the bottom surface of the wooden block (7) through the pre-reserved hole through the tip of the metal nail (5).
5. The fastening device for the aluminum-wood joint according to any one of claims 3 or 4, characterized in that, The bottom surface of the sleeve is flush with the horizontal flange of the angle iron.
6. The fastening device for the aluminum-wood joint according to claim 5, characterized in that, The metal nail (5) is an iron nail.