High-strength composite square wood for construction building and preparation method of high-strength composite square wood

Abstract

The invention discloses a high-strength composite wood square column for construction building and a preparation method thereof, and relates to the technical field of building wood square columns, the high-strength composite wood square column comprises a main body wood square column, the main body wood square column comprises a solid wood square column, a composite wood square column and a positioning plate, a containing groove is formed in the lower portion of the solid wood square column, the composite wood square column is clamped in the containing groove, and the positioning plate is arranged at the bottom of the composite wood square column and bonded in the containing groove; the two extending square wood columns are arranged at the two ends of the main square wood column, each extending square wood column is composed of two solid wood boards, and the solid wood boards are connected in an up-down bonding mode through an adhesive layer; the connecting frame is arranged at the joint of the main body wood brace and the extending wood brace, a connecting groove is formed in the connecting frame, and a partition frame is installed in the center of the connecting groove. According to the composite wood square column, the building wood waste is used as a preparation raw material, so that the green and environment-friendly production effect can be achieved, the strength can be improved by matching with the solid wood square column, and the good stability and safety during use can be guaranteed while materials are saved.

Description

Technical Field

[0001] The present invention relates to the technical field of construction wooden beams, and particularly relates to a high-strength composite wooden beam for construction and a preparation method thereof. Background Art

[0002] Wooden beams generally refer to processed wood, which is commonly used in construction, furniture manufacturing, and various woodworking projects. They are generally cut from logs and have certain dimensions and shapes. Wooden beams are generally used as fixed structures during construction or reinforcement structures for ceilings or beams in buildings.

[0003] Wooden beams are divided into solid wood beams and composite wood beams. Solid wood beams are made of a whole piece of wood, with uniform texture and relatively high overall strength. Composite wood beams are manufactured by pressing small pieces of wood. Since many composite wood beams directly use construction waste wood, their strength is not stable enough. Therefore, there is a need for a high-strength composite wood beam for construction to help solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide a high-strength composite wooden beam for construction and a preparation method thereof, which solves the problem that the strength of composite wooden beams is not stable enough because they directly use construction waste wood.

[0005] The present invention solves the above technical problems through the following technical solutions. The present invention includes: A main wooden beam, including a solid wood beam, a composite wood beam, and a positioning plate. A receiving groove is opened below the solid wood beam, the composite wood beam is clamped in the receiving groove, and the positioning plate is arranged at the bottom of the composite wood beam and adhered in the receiving groove; Two extending wooden beams, which are arranged at both ends of the main wooden beam. The extending wooden beam is composed of two solid wood boards, and the solid wood boards are adhesively connected up and down through an adhesive layer; A connecting frame, which is arranged at the connection between the main wooden beam and the extending wooden beam. A connecting groove is arranged inside the connecting frame, a partition is installed at the central position of the connecting groove, the main wooden beam and the extending wooden beam are respectively clamped on both sides of the connecting frame, a processing port is opened on one side of the inner wall of the connecting groove, and a plurality of positioning and installation components for improving the connection stability between the main wooden beam and the extending wooden beam and the connecting frame and assisting in the installation of the wooden beam are arranged on the other side of the inner wall of the connecting groove; The positioning and installation component includes a fixed block, a connecting block, an installation plate, and a plurality of limiting springs. A plurality of accommodating grooves are opened on the inner walls of the upper and lower parts of the connecting groove. A clamping port is opened between the accommodating groove and the rear side of the connecting frame. The fixed block is installed on the inner wall of the accommodating groove through a limiting spring. The front side of the fixed block is arranged in the connecting groove. The installation plate is installed on the rear side of the fixing plate through a connecting block. The installation plate is clamped in the clamping port. A guiding inclined surface inclined from the edge of the connecting frame to the middle position is opened at the edge of the fixed block.

[0006] Preferably, the composite wooden joist is formed by gluing and pressing multiple layers of wooden boards.

[0007] Preferably, the length and width of the composite wooden joist are the same as those of the solid wood board, the length of the solid wood board is the same as the width of the solid wood joist, and the width of the solid wood board is half of the width of the solid wood joist.

[0008] Preferably, convex strips are provided on both sides of the positioning plate, positioning grooves are opened on both sides of the inner wall of the accommodating groove, and the convex strips are clamped in the positioning grooves.

[0009] Preferably, the partition frame includes two sets of adjustable shell members arranged mirror-image, the adjustable shell member includes a shell plate, a limiting baffle and a supplementary block, the shell plate is fixedly installed in the connecting groove, a filling groove is opened on one side of the shell plate at the center position of the partition frame, a through port is opened between the filling groove and the outer wall of the shell plate, the limiting baffle is clamped in the filling groove, and the supplementary block is welded to one side of the limiting baffle and the supplementary block is clamped in the through port.

[0010] Preferably, a pouring hole is opened in the upper part of the center position of the front side of the partition frame.

[0011] Preferably, the connecting frame includes a connecting plate and two L-shaped assembly shells, the two assembly shells are arranged mirror-image up and down, the connecting plate is fixedly installed between the two assembly shells, and multiple groups of positioning hole groups are opened on the upper assembly shell.

[0012] Preferably, outer expanding tenon blocks are welded to both the top and bottom of the connecting plate, mortise grooves are opened at the edges of the assembly shells, and the outer expanding tenon blocks are clamped in the mortise grooves.

[0013] A preparation method of a high-strength composite wooden joist for construction buildings includes the following steps: S1. Material preparation: Prepare recycled woody construction waste, whole-length solid wood, two connecting frames, composite wooden joist processing equipment and cutting equipment; S2. Processing of the composite wooden joist: Recycle the woody construction waste and process it into a composite wooden joist through processing equipment; S3. Processing of the main wooden joist: Determine the size of the accommodating groove according to the size of the composite wooden joist and mark it on the solid wood joist, then use cutting equipment to cut the solid wood in the accommodating groove, then insert the composite wooden joist into the accommodating groove, insert the positioning plate into the lower part, apply sufficient glue to the gaps between the composite wooden joist, the positioning plate and the accommodating groove, and a main wooden joist can be obtained after the glue dries; S4. Processing of the extended wooden joist: Cut the solid wood cut from the accommodating groove in the above processing operation into segments, and bond two equal-length segments together up and down to obtain an extended wooden joist with the same texture as the solid wood joist; S5. Assembly: Assemble the two connecting frames to both ends of the main wooden beam respectively, and then snap the two extension wooden beams into the ends of the two connecting frames respectively. The set lengths of the main wooden beam and the extension wooden beam within the connecting frame are adjustable. The final length of the wooden beam can be controlled according to the requirements of architectural design. After adjustment, use fixing parts to fix the main wooden beam and the extension wooden beam, and seal the gaps at the joints with glue.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. In the present invention, the composite wooden beam uses construction wooden waste as the preparation raw material, so it can achieve a green and environmental protection production effect, and can improve the strength in cooperation with the solid wooden beam. Therefore, it can ensure good stability and safety during use while saving materials.

[0016] 2. By using the connecting frame in combination with the main wooden beam and the extension wooden beam, the present invention can extend the total use length of the wooden beam, and controlling the lengths of the main wooden beam and the extension wooden beam within the connecting groove can flexibly adjust the total use length according to requirements.

[0017] 3. The extension wooden beam of the present invention is made of some of the wood in the accommodation groove of the solid wooden beam. Therefore, the textures of the main wooden beam and the extension wooden beam are the same, and their performance aspects are the same during use, with better adaptability.

[0018] 4. The positioning and installation component of the present invention can improve the connection stability between the main wooden beam and the extension wooden beam and the connecting frame and assist in the installation of the wooden beam. The use of the fixing block and the installation plate can be automatically triggered during the assembly of the solid wooden beam and the extension wooden beam, which is convenient to use and has good structural stability.

[0019] 5. The adjustable shell component of the present invention can fill the hollow area according to the positions of the solid wooden beam and the extension wooden beam within the connecting groove. Therefore, it can ensure that the strength of the overall structure is sufficient and there will be no obvious hollow space. Description of the Drawings

[0020] Figure 1 is the front view structural view of the present invention; Figure 2 is the rear view structural view of the present invention; Figure 3 is the exploded view of the present invention; Figure 4 is the exploded view of the solid wooden beam of the present invention; Figure 5 is the structural view of the connecting frame of the present invention; Figure 6 is the rear view exploded view of the connecting frame of the present invention; Figure 7 is the front view exploded view of the connecting frame of the present invention; Figure 8Explosion diagram of the partition frame of the present invention; Figure 9 Explosion diagram of the structure of the second embodiment of the present invention; Figure 10 Structure view of the third embodiment of the present invention.

[0021] The numbers in the figure indicate: 1. Main body wooden beam; 101. Solid wood wooden beam; 102. Composite wooden beam; 103. Positioning plate; 2. Extension wooden beam; 3. Connection frame; 301. Connection plate; 302. Assembly housing; 4. Accommodation groove; 5. Connection groove; 6. Partition frame; 601. Adjustable housing part; 6011. Housing plate; 6012. Limit baffle; 6013. Supplementary block; 7. Processing port; 8. Positioning and installation assembly; 801. Fixed block; 802. Connection block; 803. Installation plate; 804. Limit spring; 9. Accommodation groove; 10. Clamping port; 11. Guide inclined surface; 12. Ridge; 13. Positioning groove; 14. Filling groove; 15. Through port; 16. Pouring hole; 17. Outer expanding tenon block; 18. Tenon groove. Detailed implementation manners

[0022] The following further describes in detail the above and other technical features and advantages of the present invention with reference to the accompanying drawings.

[0023] Embodiment 1

[0024] This embodiment provides a technical solution: a high-strength composite wooden beam for construction buildings, as Figures 1 - 8 shown, including a main body wooden beam 1, two extension wooden beams 2 and a connection frame 3.

[0025] In a specific implementation, as Figures 1 - 4 shown, the main body wooden beam 1 includes a solid wood wooden beam 101, a composite wooden beam 102 and a positioning plate 103. An accommodation groove 4 is opened below the solid wood wooden beam 101. The composite wooden beam 102 is clamped in the accommodation groove 4. The positioning plate 103 is arranged at the bottom of the composite wooden beam 102 and adhered in the accommodation groove 4. The composite wooden beam 102 is formed by bonding and pressing multiple layers of wood boards. The wood boards use construction wooden waste as raw materials for preparation. Therefore, it can achieve a green and environmental protection production effect, and can improve the strength in cooperation with the solid wood wooden beam 101, ensuring good stability and safety during use.

[0026] Two extended wooden beams 2 are arranged at both ends of the main wooden beam 1. The extended wooden beam 2 is composed of two solid wood boards, and the solid wood boards are adhesively connected up and down through an adhesive layer. The length and width of the composite wooden beam 102 are the same as those of the solid wood board. The length of the solid wood board is the same as the width of the solid wood beam 101, and the width of the solid wood board is half of the width of the solid wood beam 101. The extended wooden beam 2 is made of some of the wood in the accommodation groove 4 of the solid wood beam 101. Therefore, the texture of the main wooden beam 1 and the extended wooden beam 2 is the same, and their performance is the same during use, with better adaptability. Moreover, the extended wooden beam 2 can extend the service length of the overall wooden beam.

[0027] In a specific implementation, as Figures 1 - 3 and Figure 5 shown, a connection frame 3 is arranged at the connection between the main wooden beam 1 and the extended wooden beam 2. A connection groove 5 is arranged in the connection frame 3, and a partition frame 6 is installed at the center position of the connection groove 5. The main wooden beam 1 and the extended wooden beam 2 are respectively clamped on both sides of the connection frame 3. A processing port 7 is opened on one side of the inner wall of the connection groove 5. Through the connection frame 3, the main wooden beam 1 and the extended wooden beam 2 can be connected. Therefore, the total service length of the wooden beam can be extended, and by controlling the lengths of the main wooden beam 1 and the extended wooden beam 2 in the connection groove 5, the total service length can be flexibly adjusted according to requirements.

[0028] In a specific implementation, as Figure 6 and Figure 7As shown in the figure, on the other side of the inner wall of the connecting groove 5, there are a plurality of positioning and installation components 8 for improving the connection stability between the main wooden beam 1 and the extended wooden beam 2 and the connecting frame 3 and assisting in the installation of the wooden beam. The positioning and installation component 8 includes a fixed block 801, a connecting block 802, a mounting plate 803 and a plurality of limiting springs 804. A plurality of accommodating grooves 9 are opened on the inner walls of the upper and lower parts of the connecting groove 5. A clamping opening 10 is opened between the accommodating groove 9 and the rear side of the connecting frame 3. The fixed block 801 is installed on the inner wall of the accommodating groove 9 through the limiting spring 804. The limiting spring 804 can limit the fixed block 801, the connecting block 802 and the mounting plate 803. The front side of the fixed block 801 is arranged in the connecting groove 5. The mounting plate 803 is installed on the rear side of the fixed plate through the connecting block 802. The mounting plate 803 is clamped in the clamping opening 10. When the solid wood wooden beam 101 and the extended wooden beam 2 are not connected to the connecting frame 3, the fixed block 801 is arranged in the accommodating groove 9 and the connecting groove 5, and the mounting plate 803 is arranged in the clamping opening 10. When the solid wood wooden beam 101 and the extended wooden beam 2 are connected to the connecting frame 3, the fixed block 801 is squeezed by the main wooden beam 1 and the extended wooden beam 2. Therefore, the mounting block can squeeze the limiting spring 804 and move into the accommodating groove 9. At the same time, the connecting block 802 can push the mounting plate 803 out of the clamping opening 10. At this time, the fixed block 801 can clamp and fix the solid wood wooden beam 101 and the extended wooden beam 2 under the elastic force of the limiting spring 804. Therefore, it can ensure the stable setting of the solid wood wooden beam 101 and the extended wooden beam 2. After the mounting plate 803 is moved out of the clamping opening 10, it is convenient to install the wooden beam.

[0029] Further, a guiding inclined surface 11 inclined from the edge of the connecting frame 3 to the middle position is opened on the edge of the fixed block 801. Through the guiding inclined surface 11, it can be ensured that after the solid wood wooden beam 101 and the extended wooden beam 2 enter the connecting groove 5, they can automatically move along the guiding inclined surface 11 and push the fixed block 801 to move.

[0030] Furthermore, convex strips 12 are arranged on both sides of the positioning plate 103. Positioning grooves 13 are opened on both sides of the inner wall of the accommodating groove 4. The convex strips 12 are clamped in the positioning grooves 13. Through the convex strips 12, it can be ensured that the connection between the positioning plate 103 and the solid wood wooden beam 101 is firm. Therefore, it can prevent the composite wooden beam 102 from being set stably.

[0031] In a specific implementation, such as Figure 7 and Figure 8As shown in the figure, the partition frame 6 includes two groups of adjustable shell members 601 arranged in mirror image. The adjustable shell member 601 includes a shell plate 6011, a limiting baffle 6012 and a supplementary block 6013. The shell plate 6011 is fixedly installed in the connection groove 5. A filling groove 14 is provided on one side of the shell plate 6011 at the central position of the partition frame 6. A through port 15 is provided between the filling groove 14 and the outer wall of the shell plate 6011. The limiting baffle 6012 is clamped in the filling groove 14. The supplementary block 6013 is welded to one side of the limiting baffle 6012 and the supplementary block 6013 is clamped in the through port 15. A pouring hole 16 is provided in the upper part of the central position on the front side of the partition frame 6. Through the adjustable shell member 601, the hollow area can be filled according to the positions of the solid wood square timber 101 and the extended square timber 2 in the connection groove 5. Therefore, the strength of the overall structure can be ensured to be sufficient and there will be no obvious hollow space. After the solid wood square timber 101 and the extended square timber 2 are set, if there are gaps between either or both of the solid wood square timber 101 and the extended square timber 2 and the partition frame 6, slurry is injected into the filling groove 14 through the pouring hole 16. Therefore, the slurry can push the limiting baffle 6012 and the supplementary block 6013 to move to both sides. After that, the supplementary block 6013 can contact the ends of the solid wood square timber 101 and the extended square timber 2. Wait until the slurry dries. Therefore, it can be ensured that there will be no obvious hollow space in the whole square timber, so as to ensure high strength of the square timber.

[0032] Furthermore, the connection frame 3 includes a connection plate 301 and two L-shaped assembly shells 302. The two assembly shells 302 are arranged in mirror image up and down. The connection plate 301 is fixedly installed between the two assembly shells 302. Therefore, it is convenient to set the partition frame 6 and the connection frame 3. Multiple groups of positioning hole groups are provided on the upper assembly shell 302. Through the positioning hole groups, it is convenient to use fixing parts such as bolts to cooperate to fix the solid wood square timber 101 and the extended square timber 2.

[0033] Even further, outer expanding tenon blocks 17 are welded to both the top and bottom of the connection plate 301. Mortise grooves 18 are provided at the edges of the assembly shell 302. The outer expanding tenon blocks 17 are clamped in the mortise grooves 18. Therefore, it can be ensured that the connection between the connection plate 301 and the assembly shell 302 is stable.

[0034] Embodiment 2

[0035] This embodiment is an application of a high-strength composite square timber for construction in the construction of a building ceiling obtained in Embodiment 1. As Figure 9 shown, the specific application steps are as follows: S1. Production of square timber: Sa1. Material preparation: Prepare recycled wood construction waste, whole solid wood of sufficient length, two connection frames 3, composite square timber 102 processing equipment and cutting equipment; Sa2. Processing of the composite wooden joist 102: Recycle the woody construction waste and process it into the composite wooden joist 102 through processing equipment; Sa3. Processing of the main wooden joist 1: Determine the size of the receiving groove 4 according to the size of the composite wooden joist 102 and mark it on the solid wood joist 101. Then use cutting equipment to cut off the solid wood inside the receiving groove 4. After that, insert the composite wooden joist 102 into the receiving groove 4, and insert the positioning plate 103 below. Apply sufficient adhesive to the gaps between the composite wooden joist 102, the positioning plate 103 and the receiving groove 4. After the adhesive dries, the main wooden joist 1 can be obtained; Sa4. Processing of the extension wooden joist 2: Cut the solid wood cut from the inside of the receiving groove 4 in the above processing operation into sections, and bond two equal-length sections together to obtain the extension wooden joist 2 with the same texture as the solid wood joist 101; Sa5. Assembly: Assemble the two connecting frames 3 to both ends of the main wooden joist 1 respectively. Then insert the two extension wooden joists 2 into the ends of the two connecting frames 3 respectively. The set lengths of the main wooden joist 1 and the extension wooden joist 2 inside the connecting frame 3 are adjustable. The final length of the wooden joist can be controlled according to the building design requirements. After adjustment, use fixing parts to fix the main wooden joist 1 and the extension wooden joist 2 and apply glue to the gaps at the joints; S2. Composition and assembly of the ceiling member: Four wooden joists, four side plates and a top plate. Install the four wooden joists and the four side plates through the cooperation of the mounting plate 803 and the connecting parts. Then arrange the four side plates in a square shape and fix them connected in sequence. Finally, fixedly install the top plate above the wooden joists and the side plates.

[0036] Embodiment III

[0037] This embodiment is the application of a high-strength composite wooden joist for construction obtained in Embodiment I in building structure positioning, as Figure 10 shown. The specific application steps are as follows: S1. Production of the wooden joist: Sa1. Material preparation: Prepare recycled woody construction waste, a whole solid wood of sufficient length, two connecting frames 3, processing equipment for the composite wooden joist 102 and cutting equipment; Sa2. Processing of the composite wooden joist 102: Recycle the woody construction waste and process it into the composite wooden joist 102 through processing equipment; Sa3. Processing of the main wooden joist 1: Determine the size of the receiving groove 4 according to the size of the composite wooden joist 102 and mark it on the solid wood joist 101. Then use cutting equipment to cut off the solid wood inside the receiving groove 4. After that, insert the composite wooden joist 102 into the receiving groove 4, and insert the positioning plate 103 below. Apply sufficient adhesive to the gaps between the composite wooden joist 102, the positioning plate 103 and the receiving groove 4. After the adhesive dries, the main wooden joist 1 can be obtained; Sa4. Processing of the extended wooden joist 2: Cut the solid wood cut from the accommodation groove 4 in the above processing operation into sections, and bond two equal-length sections together up and down to obtain the extended wooden joist 2 with the same texture as the solid wood joist 101; Sa5. Assembly: Assemble the two connecting frames 3 to both ends of the main wooden joist 1 respectively, and then snap the two extended wooden joists 2 into the ends of the two connecting frames 3 respectively. The set lengths of the main wooden joist 1 and the extended wooden joist 2 in the connecting frame 3 are adjustable. According to the building design requirements, the final length of the wooden joist can be controlled. After adjustment, use fixing parts to fix the main wooden joist 1 and the extended wooden joist 2 and seal the joints with glue; S1. Structure positioning and installation: Enclose each group of four wooden joist positions on the four sides of the building structure respectively, and then set up an installation structure outside the wooden joists and connect the wooden joists with the installation structure. Multiple groups can be set to fix the building structure.

[0038] The above are only the preferred embodiments of the present invention, which are illustrative rather than restrictive to the present invention. Those skilled in the art understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present invention, but all will fall within the protection scope of the present invention.

Claims

1. A high-strength composite wood beam for construction, characterized in that: include: The main body wooden beam (1) comprises a solid wooden beam (101), a composite wooden beam (102) and a positioning plate (103); a receiving groove (4) is provided below the solid wooden beam (101); the composite wooden beam (102) is clamped in the receiving groove (4); and the positioning plate (103) is arranged at the bottom of the composite wooden beam (102) and bonded in the receiving groove (4); Two extended wooden beams (2) are arranged at both ends of the main wooden beam (1), the extended wooden beam (2) being composed of two solid wooden boards, and the solid wooden boards are bonded together by adhesive layers; A connecting frame (3) is arranged at the connection between the main wooden beam (1) and the extended wooden beam (2), a connecting groove (5) is arranged in the connecting frame (3), a partition frame (6) is installed at the center of the connecting groove (5), the main wooden beam (1) and the extended wooden beam (2) are respectively clamped on both sides of the connecting frame (3), a processing port (7) is opened on one side of the inner wall of the connecting groove (5), and a plurality of positioning and installation components (8) are arranged on the other side of the inner wall of the connecting groove (5) for improving the connection stability between the main wooden beam (1) and the extended wooden beam (2) and the connecting frame (3) and assisting the installation of the wooden beams; The positioning and mounting assembly (8) comprises a fixing block (801), a connecting block (802), a mounting plate (803) and a plurality of limiting springs (804); a plurality of receiving grooves (9) are provided on the inner walls of the upper and lower parts of the connecting groove (5); a clamping opening (10) is provided between the receiving groove (9) and the rear side of the connecting frame (3); the fixing block (801) is mounted on the inner wall of the receiving groove (9) via the limiting springs (804); the front side of the fixing block (801) is arranged in the connecting groove (5); the mounting plate (803) is mounted on the rear side of the fixing plate via the connecting block (802); the mounting plate (803) is clamped in the clamping opening (10); and a guiding inclined surface (11) inclined from the edge of the connecting frame (3) to the middle position is provided on the edge of the fixing block (801).

2. A high-strength composite wood beam for construction as claimed in claim 1, characterized in that: The composite wood beam (102) is formed by gluing and pressing multiple layers of wood boards.

3. The high-strength composite wood beam for construction as claimed in claim 1, characterized in that: The length and width of the composite wood beam (102) are the same as those of the solid wood board, the length of the solid wood board is the same as the width of the solid wood beam (101), and the width of the solid wood board is half of that of the solid wood beam (101).

4. The high-strength composite wood beam for construction as claimed in claim 1, characterized in that: Both sides of the positioning plate (103) are provided with convex strips (12), both sides of the inner wall of the accommodating groove (4) are provided with positioning grooves (13), and the convex strips (12) are clamped in the positioning grooves (13).

5. The high-strength composite wood beam for construction as claimed in claim 1, characterized in that: The partition frame (6) comprises two sets of adjustable shell components (601) arranged in a mirror image. The adjustable shell components (601) comprise a shell plate (6011), a baffle plate (6012) and a supplementary block (6013). The shell plate (6011) is fixedly mounted in the connection groove (5). A filling groove (14) is provided on one side of the shell plate (6011) located at the center of the partition frame (6). A through opening (15) is provided between the filling groove (14) and the outer wall of the shell plate (6011). The baffle plate (6012) is clamped in the filling groove (14). The supplementary block (6013) is welded to one side of the baffle plate (6012) and the supplementary block (6013) is clamped in the through opening (15).

6. A high-strength composite wood beam for construction as claimed in claim 5, characterized in that: A casting hole (16) is provided in the upper portion of the center position of the front side of the partition frame (6).

7. The high-strength composite wood beam for construction as claimed in claim 1, characterized in that: The connection frame (3) comprises a connection plate (301) and two L-shaped assembly shells (302), the two assembly shells (302) being arranged in a mirror-like manner up and down, the connection plate (301) being fixedly installed between the two assembly shells (302), and a plurality of positioning hole groups are provided on the upper assembly shell (302).

8. The high-strength composite wood beam for construction as claimed in claim 7, characterized in that: Outwardly-expanded tenons (17) are welded to the top and bottom of the connection plate (301), and tenon grooves (18) are provided at the edges of the assembly shell (302), and the outwardly-expanded tenons (17) are clamped in the tenon grooves (18).

9. A method for preparing a high-strength composite wood beam for construction, applicable to the high-strength composite wood beam for construction as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Material preparation: prepare recycled wooden construction waste, full-length solid wood, two connecting frames (3), composite wood beams (102), processing equipment and cutting equipment; S2. Processing of composite wood beams (102): recycling wooden construction waste and processing it into composite wood beams (102) through processing equipment; S3, processing of the main wood beam (1): determine the size of the receiving groove (4) according to the size of the composite wood beam (102) and mark it on the solid wood beam (101), then use a cutting device to cut the solid wood in the receiving groove (4), then insert the composite wood beam (102) into the receiving groove (4), insert the positioning plate (103) below, apply a sufficient amount of glue to the gap between the composite wood beam (102) and the positioning plate (103) and the receiving groove (4), and after the glue dries, the main wood beam (1) can be obtained; S4, processing the extended wooden beam (2): the solid wood cut from the receiving groove (4) in the above processing operation is cut into sections, and two sections of equal length are glued together to obtain an extended wooden beam (2) with the same texture as the solid wooden beam (101); S5. Assembly: Assemble the two connecting frames (3) to the two ends of the main wooden beam (1), and then insert the two extended wooden beams (2) into the ends of the two connecting frames (3). The length of the main wooden beam (1) and the extended wooden beam (2) in the connecting frame (3) is adjustable. The final length of the wooden beam can be controlled according to the requirements of the architectural design. After adjustment, use the fixing parts to fix the main wooden beam (1) and the extended wooden beam (2) and glue the gap at the connection.

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