High-strength composite wood beam for construction and preparation method thereof

Abstract

The present invention discloses a high-strength composite wood beam for construction and a preparation method thereof, which relates to the technical field of building wood beams. The invention comprises a main wood beam, including a solid wood beam, a composite wood beam and a positioning plate. A receiving groove is provided under the solid wood beam, the composite wood beam is clamped in the receiving groove, and the positioning plate is provided at the bottom of the composite wood beam and bonded in the receiving groove; two extension wood beams are provided at both ends of the main wood beam, the extension wood beam is composed of two solid wood boards, and the solid wood boards are bonded together by an adhesive layer; a connecting frame is provided at the connection between the main wood beam and the extension wood beam, a connecting groove is provided in the connecting frame, and a partition is installed at the center of the connecting groove. In the present invention, the composite wood beam uses construction wood waste as a preparation raw material, so it can achieve a green and environmentally friendly production effect, and can improve strength when combined with the solid wood beam, so it can save materials while ensuring good stability and safety during use.

Description

Technical Field

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

[0002] A beam generally refers to processed wood, commonly used in construction, furniture manufacturing, and various woodworking projects. Typically cut from logs and given a specific size and shape, beams are used as structural supports during construction or to reinforce ceilings or beams within a building.

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

[0004] The purpose of the present invention is to provide a high-strength composite wood beam for construction and a preparation method thereof, which solves the problem that the composite wood beam directly uses construction waste wood and thus has insufficient strength and stability.

[0005] The present invention solves the above-mentioned technical problems through the following technical solutions, which include:

[0006] The main wooden beam includes a solid wooden beam, a composite wooden beam and a positioning plate. A receiving groove is provided below the solid wooden beam, the composite wooden beam is clamped in the receiving groove, and the positioning plate is arranged at the bottom of the composite wooden beam and bonded in the receiving groove.

[0007] Two extended wooden beams are provided at both ends of the main wooden beam, wherein the extended wooden beams are composed of two solid wooden boards, and the solid wooden boards are bonded together by an adhesive layer;

[0008] A connecting frame is provided at the connection between the main wooden beam and the extension wooden beam, a connecting groove is provided in the connecting frame, a spacer is installed at the center of the connecting groove, the main wooden beam and the extension wooden beam are respectively clamped on both sides of the connecting frame, a processing port is provided on one side of the inner wall of the connecting groove, and a plurality of positioning and installation components are provided on the other side of the inner wall of the connecting groove for improving the connection stability between the main wooden beam and the extension wooden beam and the connecting frame and assisting the installation of the wooden beam;

[0009] The positioning and mounting assembly includes a fixed block, a connecting block, a mounting plate and a plurality of limit springs. A plurality of accommodating grooves are provided on the inner walls of the upper and lower parts of the connecting groove. A clamping opening is provided between the accommodating groove and the rear side surface of the connecting frame. The fixed block is installed on the inner wall of the accommodating groove through a limit spring. The front side of the fixed block is arranged in the connecting groove. The mounting plate is installed on the rear side of the fixed plate through the connecting block. The mounting plate is clamped in the clamping opening. The edge of the fixed block is provided with a guiding inclined surface inclined from the edge of the connecting frame to the middle position.

[0010] Preferably, the composite wooden beam is formed by gluing and pressing multiple layers of wooden boards.

[0011] Preferably, the length and width of the composite wood beam 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, and the width of the solid wood board is half of that of the solid wood beam.

[0012] Preferably, convex strips are provided on both sides of the positioning plate, and positioning grooves are provided on both sides of the inner wall of the accommodating groove, and the convex strips are clamped in the positioning grooves.

[0013] Preferably, the partition frame includes two groups of adjustable shell parts arranged in a mirror image, and the adjustable shell parts include a shell plate, a limit plate and a supplementary block. The shell plate is fixedly installed in the connecting groove. The shell plate is located on one side of the center position of the partition frame and a filling groove is opened. A through opening is opened between the filling groove and the outer wall of the shell plate. The limit plate is clamped in the filling groove, and the supplementary block is welded to one side of the limit plate and the supplementary block is clamped in the through opening.

[0014] Preferably, a casting hole is provided in the upper center portion of the front side of the partition frame.

[0015] Preferably, the connecting frame includes a connecting plate and two L-shaped assembly shells, the two assembly shells are mirror-imaged up and down, the connecting plate is fixedly installed between the two assembly shells, and the upper assembly shell has multiple groups of positioning holes.

[0016] Preferably, outward-expanding tenons are welded to the top and bottom of the connecting plate, and tenon grooves are provided at the edges of the assembly shell, and the outward-expanding tenons are clamped in the tenon grooves.

[0017] A method for preparing a high-strength composite wood beam for construction, comprising the following steps:

[0018] S1. Material preparation: Prepare recycled wooden construction waste, full-length solid wood, two connecting frames, composite wood beam processing equipment and cutting equipment;

[0019] S2. Processing of composite wood beams: Recycle wooden construction waste and process it into composite wood beams through processing equipment;

[0020] S3. Processing of the main wooden beams: Determine the size of the receiving slots according to the size of the composite wooden beams and mark them on the solid wooden beams. Then use cutting equipment to cut the solid wood in the receiving slots. Then, insert the composite wooden beams into the receiving slots and insert the positioning plate underneath. Apply sufficient glue to the gaps between the composite wooden beams and the positioning plate and the receiving slots. After the glue dries, the main wooden beams are obtained.

[0021] S4. Processing of the extension beam: The solid wood cut from the receiving groove in the above processing operation is cut into sections, and two sections of equal length are glued together to obtain an extension beam with the same texture as the solid wood beam;

[0022] S5. Assembly: Assemble the two connecting frames to the two ends of the main wooden beam respectively, and then clip the two extended wooden beams into the ends of the two connecting frames respectively. The setting length of the main wooden beam and the extended wooden beam in the connecting frame is adjustable. The final wooden beam length can be controlled according to the architectural design requirements. After adjustment, use the fixings to fix the main wooden beam and the extended wooden beam and glue the gaps at the connection.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. The composite wooden beams of the present invention utilize construction wood waste as raw materials for preparation, thus achieving a green and environmentally friendly production effect, and can be combined with solid wood beams to improve strength, thus saving materials while ensuring stability and safety during use.

[0025] 2. The present invention can extend the total usable length of the wooden beams by using the connecting frame in conjunction with the main wooden beams and the extension wooden beams, and can flexibly adjust the total usable length according to demand by controlling the lengths of the main wooden beams and the extension wooden beams in the connecting grooves.

[0026] 3. The extension beam of the present invention is made of part of the wood in the accommodating groove in the solid wood beam. Therefore, the main beam and the extension beam have the same texture, and their performance is the same when in use, and the adaptability is better.

[0027] 4. The present invention can improve the connection stability between the main wooden beams and the extended wooden beams and the connecting frame and assist in the installation of the wooden beams through the positioning and installation components. The use of the fixing blocks and the mounting plates can be automatically triggered when the solid wood wooden beams and the extended wooden beams are assembled. It is easy to use and has good structural stability.

[0028] 5. The present invention can fill the hollow area according to the positions of the solid wood beams and the extended wood beams in the connecting grooves through the adjustable shell parts, thereby ensuring that the strength of the overall structure is sufficient and no obvious hollow space appears. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front structural view of the present invention;

[0030] Figure 2 It is a rear structural view of the present invention;

[0031] Figure 3 An exploded view of the present invention;

[0032] Figure 4 This is an exploded view of the solid wood beam of the present invention;

[0033] Figure 5 A structural view of the connection frame of the present invention;

[0034] Figure 6 This is an exploded rear view of the connection frame of the present invention;

[0035] Figure 7 This is a front exploded view of the connection frame of the present invention;

[0036] Figure 8 An exploded view of the spacer of the present invention;

[0037] Figure 9 This is an exploded view of the structure of the second embodiment of the present invention;

[0038] Figure 10 This is a structural diagram of embodiment 3 of the present invention.

[0039] The numbers in the figure represent:

[0040] 1. Main beam; 101. Solid wood beam; 102. Composite wood beam; 103. Positioning plate; 2. Extension beam; 3. Connecting frame; 301. Connecting plate; 302. Assembly shell; 4. Accommodating groove; 5. Connecting groove; 6. Partition; 601. Adjustable shell; 6011. Shell plate; 6012. Limit plate; 6013. Supplementary block; 7. Processing port; 8. Positioning and installation assembly; 801. Fixed block; 802. Connecting block; 803. Mounting plate; 804. Limiting spring; 9. Accommodating groove; 10. Release port; 11. Guide slope; 12. Raised strip; 13. Positioning groove; 14. Filling groove; 15. Through port; 16. Casting hole; 17. Outward-expanding tenon block; 18. Tenon groove. DETAILED DESCRIPTION

[0041] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0042] Example 1

[0043] This embodiment provides a technical solution: a high-strength composite wood beam for construction, such as Figures 1-8 As shown, it includes a main wooden beam 1, two extended wooden beams 2 and a connecting frame 3.

[0044] In the specific implementation, such as Figure 1-4As shown, the main wooden beam 1 includes a solid wooden beam 101, a composite wooden beam 102 and a positioning plate 103. A receiving groove 4 is opened under the solid wooden beam 101, and the composite wooden beam 102 is clamped in the receiving groove 4. The positioning plate 103 is arranged at the bottom of the composite wooden beam 102 and bonded in the receiving groove 4. The composite wooden beam 102 is made of multiple layers of wooden boards bonded and pressed. The wooden boards use construction wooden waste as raw materials, so they can achieve a green and environmentally friendly production effect, and can be combined with the solid wooden beam 101 to improve strength, ensuring stability and safety during use.

[0045] Two extension beams 2 are arranged at both ends of the main beam 1. The extension beam 2 is composed of two solid wood boards. The solid wood boards are bonded together by adhesive layers. The length and width of the composite beam 102 are the same as the length and width of the solid wood board. The length of the solid wood board is the same as the width of the solid wood beam 101. The width of the solid wood board is half of the solid wood beam 101. The extension beam 2 is made of part of the wood in the accommodating groove 4 in the solid wood beam 101. Therefore, the main beam 1 and the extension beam 2 have the same texture, and have the same performance in use, better adaptability, and increasing the extension beam 2 can extend the use length of the entire beam.

[0046] In the specific implementation, such as Figure 1-3 and Figure 5 As shown, the connecting frame 3 is arranged at the connection between the main wooden beam 1 and the extended wooden beam 2, and a connecting groove 5 is provided in the connecting frame 3. A partition 6 is installed at the center position 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 provided on one side of the inner wall of the connecting groove 5. The main wooden beam 1 and the extended wooden beam 2 can be connected through the connecting frame 3, so that the total usable length of the wooden beam can be extended, and the length of the main wooden beam 1 and the extended wooden beam 2 in the connecting groove 5 can be controlled to flexibly adjust the total usable length according to needs.

[0047] In the specific implementation, such as Figure 6 and Figure 7As shown, a plurality of positioning and mounting components 8 are provided on the other side of the inner wall of the connecting groove 5 for improving the connection stability of the main wooden beam 1 and the extension wooden beam 2 with the connecting frame 3 and assisting the installation of the wooden beams. The positioning and mounting components 8 include 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 card opening 10 is provided between the receiving groove 9 and the rear side surface of the connecting frame 3. The fixing block 801 is installed on the inner wall of the receiving groove 9 by means of a limiting spring 804. The fixing block 801, the connecting block 802 and the mounting plate 803 can be limited by the limiting spring 804. The front side of the fixing block 801 is provided in the connecting groove 5, and the mounting plate 803 is installed on the rear side of the fixing plate through the connecting block 802. The mounting plate 803 is carded in the card opening In the release opening 10, when the solid wood beam 101 and the extended wood beam 2 are not connected to the connecting frame 3, the fixed block 801 is set in the accommodating groove 9 and the connecting groove 5, and the mounting plate 803 is set in the clamping opening 10. When the solid wood beam 101 and the extended wood beam 2 are connected to the connecting frame 3, the fixed block 801 is squeezed by the main wood beam 1 and the extended wood beam 2, so the mounting block can squeeze the limit 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 beam 101 and the extended wood beam 2 under the elastic force of the limit spring 804, thereby ensuring that the solid wood beam 101 and the extended wood beam 2 are set stably, and the mounting plate 803 can be conveniently installed after being moved out of the clamping opening 10.

[0048] Furthermore, a guide slope 11 is provided on the edge of the fixed block 801, which is inclined from the edge of the connecting frame 3 to the middle position. The guide slope 11 can ensure that the solid wood beam 101 and the extended wood beam 2 can automatically move along the guide slope 11 after entering the connecting groove 5 and push the fixed block 801 to move.

[0049] Furthermore, ridges 12 are provided on both sides of the positioning plate 103, and positioning grooves 13 are provided on both sides of the inner wall of the accommodating groove 4. The ridges 12 are clamped in the positioning grooves 13. The ridges 12 can ensure that the connection between the positioning plate 103 and the solid wood beam 101 is firm, thereby preventing the composite wood beam 102 from being set stably.

[0050] In the specific implementation, such as Figure 7 and Figure 8As shown, the partition 6 includes two sets of mirror-image adjustable shells 601, and the adjustable shell 601 includes a shell plate 6011, a limit plate 6012 and a supplementary block 6013. The shell plate 6011 is fixedly installed in the connecting groove 5. The shell plate 6011 is located on one side of the center position of the partition 6 and is provided with a filling groove 14. A through opening 15 is provided between the filling groove 14 and the outer wall of the shell plate 6011. The limit plate 6012 is clamped in the filling groove 14. The supplementary block 6013 is welded to one side of the limit plate 6012 and the supplementary block 6013 is clamped in the through opening 15. A casting hole 16 is provided on the upper part of the center position of the front side of the partition 6. Through the adjustable shell 601, the partition 6 can be adjusted according to the solid wood beam 101 and the extension beam 2. The position set in the connecting groove 5 is used to fill the hollow area, so that the strength of the overall structure can be guaranteed to be sufficient and no obvious hollow space will appear. After the solid wood beam 101 and the extended wood beam 2 are set, if there is a gap between either or both of the solid wood beam 101 and the extended wood beam 2 and the partition frame 6, slurry is injected into the filling groove 14 through the pouring hole 16, so that the slurry can push the limit plate 6012 and the supplementary block 6013 to move to both sides, and then the supplementary block 6013 can contact with the end of the solid wood beam 101 and the end of the extended wood beam 2, and wait until the slurry dries, so that it can be ensured that there will be no obvious hollow space in the entire beam, thereby ensuring the high strength of the beam.

[0051] Furthermore, the connecting frame 3 includes a connecting plate 301 and two L-shaped assembly shells 302. The two assembly shells 302 are mirror-imaged up and down, and the connecting plate 301 is fixedly installed between the two assembly shells 302, so that the setting between the partition 6 and the connecting frame 3 can be facilitated. There are multiple groups of positioning holes on the upper assembly shell 302, and the positioning holes can be conveniently used to use bolts and other fixing parts to fix the solid wood beam 101 and the extended wood beam 2.

[0052] Furthermore, outward-expanding tenons 17 are welded to the top and bottom of the connecting plate 301, and tenons 18 are provided on the edges of the assembly shell 302. The outward-expanding tenons 17 are clamped in the tenon grooves 18, thereby ensuring a stable connection between the connecting plate 301 and the assembly shell 302.

[0053] Example 2

[0054] This embodiment is an application of a high-strength composite wood beam for construction obtained in Example 1 in the construction of a building ceiling. Figure 9 The specific application steps are as follows:

[0055] S1. Production of wooden beams:

[0056] Sa1. Material preparation: Prepare recycled wooden construction waste, full-length solid wood, two connecting frames 3, composite wood beam 102 processing equipment and cutting equipment;

[0057] Sa2. Processing of composite wood beams 102: recycling wooden construction waste and processing it into composite wood beams 102 through processing equipment;

[0058] Sa3. Processing of the main wooden beam 1: Determine the size of the receiving groove 4 according to the size of the composite wooden beam 102 and mark it on the solid wooden beam 101. Then use a cutting device to cut the solid wood in the receiving groove 4. Then, insert the composite wooden beam 102 into the receiving groove 4 and insert the positioning plate 103 below. Apply sufficient glue to the gaps between the composite wooden beam 102 and the positioning plate 103 and the receiving groove 4. After the glue dries, the main wooden beam 1 is obtained.

[0059] Sa4, processing of the extended wood beam 2: the solid wood cut from the accommodating groove 4 in the above processing operation is cut into sections, and two sections of equal length are glued together to obtain the extended wood beam 2 with the same texture as the solid wood beam 101;

[0060] Sa5. Assembly: Assemble the two connecting frames 3 to the two ends of the main wooden beam 1, and then clip the two extension wooden beams 2 into the ends of the two connecting frames 3. The setting length of the main wooden beam 1 and the extension wooden beam 2 in the connecting frames 3 is adjustable. The final wooden beam length can be controlled according to the architectural design requirements. After adjustment, use the fixings to fix the main wooden beam 1 and the extension wooden beam 2 and glue the gaps at the connection;

[0061] S2. Composition and assembly of ceiling components: four wooden beams, four side panels and a top panel. The four wooden beams are respectively installed with the four side panels through the mounting plate 803 and the connecting parts. Then the four side panels are arranged in a square shape and fixedly connected in sequence. Finally, the top panel is fixedly installed above the wooden beams and side panels.

[0062] Example 3

[0063] This embodiment is an application of the high-strength composite wood beam obtained in the first embodiment for construction and building to do structural positioning in the building. Figure 10 The specific application steps are as follows:

[0064] S1. Production of wooden beams:

[0065] Sa1. Material preparation: Prepare recycled wooden construction waste, full-length solid wood, two connecting frames 3, composite wood beam 102 processing equipment and cutting equipment;

[0066] Sa2. Processing of composite wood beams 102: recycling wooden construction waste and processing it into composite wood beams 102 through processing equipment;

[0067] Sa3. Processing of the main wooden beam 1: Determine the size of the receiving groove 4 according to the size of the composite wooden beam 102 and mark it on the solid wooden beam 101. Then use a cutting device to cut the solid wood in the receiving groove 4. Then, insert the composite wooden beam 102 into the receiving groove 4 and insert the positioning plate 103 below. Apply sufficient glue to the gaps between the composite wooden beam 102 and the positioning plate 103 and the receiving groove 4. After the glue dries, the main wooden beam 1 is obtained.

[0068] Sa4, processing of the extended wood beam 2: the solid wood cut from the accommodating groove 4 in the above processing operation is cut into sections, and two sections of equal length are glued together to obtain the extended wood beam 2 with the same texture as the solid wood beam 101;

[0069] Sa5. Assembly: Assemble the two connecting frames 3 to the two ends of the main wooden beam 1, and then clip the two extension wooden beams 2 into the ends of the two connecting frames 3. The setting length of the main wooden beam 1 and the extension wooden beam 2 in the connecting frames 3 is adjustable. The final wooden beam length can be controlled according to the architectural design requirements. After adjustment, use the fixings to fix the main wooden beam 1 and the extension wooden beam 2 and glue the gaps at the connection;

[0070] S1. Structural positioning and installation: Build four wooden beams in a group on the four sides of the building structure, then set up the installation structure outside the wooden beams, connect the wooden beams to the installation structure, and multiple groups can be set up to fix the building structure.

[0071] The above are only preferred embodiments of the present invention and are merely illustrative, not restrictive, of the present invention. Those skilled in the art will appreciate that many changes, modifications, and even equivalents may be made to the embodiments within the spirit and scope of the claims, all of which fall within the scope of protection of the present invention.

Claims

1. A high-strength composite wood beam for construction, characterized in that: include: The main wooden beam (1) comprises a solid wooden beam (101), a composite wooden beam (102) and a positioning plate (103), wherein 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 beams (2) are composed of two solid wooden boards, and the solid wooden boards are bonded together by adhesive layers; A connecting frame (3) is provided at the connection between the main wooden beam (1) and the extension wooden beam (2), a connecting groove (5) is provided in the connecting frame (3), a partition (6) is installed at the center of the connecting groove (5), the main wooden beam (1) and the extension wooden beam (2) are respectively clamped on both sides of the connecting frame (3), a processing port (7) is provided on one side of the inner wall of the connecting groove (5), and a plurality of positioning and installation components (8) for improving the connection stability between the main wooden beam (1) and the extension wooden beam (2) and the connecting frame (3) and assisting the installation of the wooden beams are provided on the other side of the inner wall of the connecting groove (5); 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). The edge of the fixing block (801) is provided with a guide inclined surface (11) inclined from the edge of the connecting frame (3) to the middle position.

2. The high-strength composite wood beam for construction as claimed in claim 1, characterized in that: The composite wooden beam (102) is formed by gluing and pressing multiple layers of wooden 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), and 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 mirror-image adjustable shell members (601), the adjustable shell member (601) comprising a shell plate (6011), a baffle plate (6012) and a supplementary block (6013), the shell plate (6011) being fixedly mounted in the connecting groove (5), a filling groove (14) being provided on one side of the shell plate (6011) located at the center of the partition frame (6), a through opening (15) being provided between the filling groove (14) and the outer wall of the shell plate (6011), the baffle plate (6012) being clamped in the filling groove (14), the supplementary block (6013) being welded to one side of the baffle plate (6012) and the supplementary block (6013) being clamped in the through opening (15).

6. The 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 connecting frame (3) comprises a connecting plate (301) and two L-shaped assembly shells (302). The two assembly shells (302) are arranged in a mirror-like manner up and down. The connecting plate (301) is fixedly installed between the two assembly shells (302). The upper assembly shell (302) has multiple groups of positioning holes.

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

9. A method for preparing a high-strength composite wood beam for construction, applicable to the high-strength composite wood beam for construction according to 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 wooden beam (1): Determine the size of the receiving groove (4) according to the size of the composite wooden beam (102) and mark it on the solid wooden beam (101). Then, use a cutting device to cut the solid wood in the receiving groove (4). Then, insert the composite wooden beam (102) into the receiving groove (4) and insert the positioning plate (103) below. Apply sufficient glue to the gaps between the composite wooden beam (102) and the positioning plate (103) and the receiving groove (4). After the glue dries, the main wooden beam (1) can be obtained. S4, processing of the extended wooden beam (2): the solid wood cut from the accommodating 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 extension wooden beams (2) into the ends of the two connecting frames (3). The length of the main wooden beam (1) and the extension 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 extension wooden beam (2) and glue the gap at the connection.

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