Regenerated batten applied to column support and use method thereof

Abstract

The invention provides a regenerated batten applied to column supporting, and belongs to the technical field of regenerated battens, the regenerated batten applied to column supporting comprises a batten supporting column, a connecting part is integrally formed at the bottom of the batten supporting column, fixing columns are integrally formed at the four corners of the top of the connecting part, and reinforcing assemblies are fixedly arranged on the connecting part and the fixing columns through fixing glue; a first clamping groove is formed in the center of the upper surface of the transverse beam; fixing glue is smeared on the outer surface and the upper surface of the connecting part, then fixing glue is smeared on the outer surface of the fixing column, a rectangular sleeve on a reinforcing assembly is connected to the fixing column in a sleeving mode, the rectangular sleeve is squeezed downwards, the connecting part is connected with the rectangular sleeve in a sleeving mode, and the fixing column penetrates through a rectangular hole; the rectangular sleeve adheres to the connecting part through the fixing glue on the outer surface and the upper surface of the connecting part, the L-shaped plate adheres to the fixing column through the fixing glue on the outer surface of the fixing column, the connecting part and the fixing column are reinforced through the rectangular sleeve and the L-shaped plate, and the service life of the square timber supporting column is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of recycled timber technology, and in particular to a recycled timber used for column support and its application method. Background Technology

[0002] Recycled wood is an environmentally friendly composite material made by mixing wood fiber and plastic and then heating and injection molding it. No harmful substances such as benzene, formaldehyde, and cyanide are used in the production process. Standardized production is achieved through high-temperature extrusion molding. It has physical properties such as waterproof, moisture-proof, mildew-proof, insect-proof, termite-proof, acid and alkali resistant, flame retardant, weather resistant, and anti-aging. At the same time, it retains the advantages of sound absorption and energy saving and the natural wood texture, and requires no coating or maintenance.

[0003] Recycled timber is commonly used in building formwork, furniture frames, wooden joists, baseboards, and door core materials. When recycled timber is used for column support in building formwork, horizontal and vertical beams need to be installed above the column support. Therefore, cross-shaped grooves need to be cut into the top of the recycled timber to match the horizontal and vertical beams for easy installation. However, cutting cross-shaped grooves into the top of the recycled timber affects the strength of the top of the timber. When the horizontal and vertical beams are disassembled, the top of the recycled timber is easily damaged. Therefore, the service life of recycled timber as a support column is not conducive to its reuse. Therefore, this paper designs a recycled timber for column support and its usage method to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the above-mentioned background art, and to propose a recycled timber for column support and its usage method.

[0005] The technical problem to be solved by the present invention is to provide a recycled timber for column support and a method of using it to solve the problem that the connection of recycled timber for column support and its method of use is easily damaged when it is installed and connected to the beam, which is not conducive to the reuse of recycled timber.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A recycled timber support for column support and its usage method are disclosed, comprising timber support columns, transverse beams and longitudinal beams. The bottom of the timber support column is integrally formed with a connecting part, and the top four corners of the connecting part are integrally formed with fixing posts. Reinforcing components are fixedly installed on the connecting part and the fixing posts by fixing adhesive. A first slot is opened in the center of the upper surface of the transverse beam, and a second slot is opened in the center of the bottom surface of the longitudinal beam. The transverse beam and the longitudinal beam are engaged through the first slot and the second slot, and both the transverse beam and the longitudinal beam are engaged in the middle of the four fixing posts.

[0008] Preferably, the height of both the transverse beam and the longitudinal beam is equal to the height of the fixed column.

[0009] Preferably, the thickness of both the transverse beam and the longitudinal beam is equal to the distance between two adjacent fixed columns.

[0010] Preferably, the widths of the first and second slots are both equal to the thicknesses of the transverse and longitudinal beams.

[0011] Preferably, the height of the first slot and the second slot are both equal to 1 / 2 of the height of the transverse beam and the longitudinal beam.

[0012] Preferably, the reinforcing component includes a rectangular sleeve, an L-shaped plate, and rectangular holes. The four corners of the upper surface of the rectangular sleeve are fixedly provided with L-shaped plates, and the four corners of the upper surface of the rectangular sleeve are provided with rectangular holes. The reinforcing component is made of stainless steel.

[0013] Preferably, the outer side length of the rectangular sleeve matches the side length of the square timber support column, and the side length of the central through hole of the rectangular sleeve matches the side length of the connecting part.

[0014] Preferably, the rectangular hole matches the fixing post.

[0015] Preferably, when the rectangular sleeve is fitted onto the connecting part, the top of the connecting part is attached to the top of the inner side of the rectangular sleeve, and the bottom of the rectangular sleeve is attached to the bottom of the square timber support column. At this time, the fixing column passes through the rectangular hole, and the outer surface of the fixing column is attached to the inner surface of the L-shaped plate.

[0016] A recycled timber used for column support and its application method include the following steps:

[0017] Step 1: The first slot on the transverse beam and the second slot on the longitudinal beam connect the transverse beam and the longitudinal beam, forming a cross-shaped intersecting structure. Step 2: The transverse and longitudinal beams are inserted into the four fixed posts on the connecting part, so that the square timber support posts support the transverse and longitudinal beams. Due to the setting of the reinforcing components, the strength of the connecting part and the fixed posts can be guaranteed.

[0018] Step 3: The outer side length of the rectangular sleeve matches the side length of the square timber support column, and the side length of the central through hole of the rectangular sleeve matches the side length of the connecting part, so that the rectangular sleeve can be easily fitted onto the connecting part.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] In the above solution, by setting up connecting parts and fixing posts, when the square timber is used as a support column to support the transverse and longitudinal beams, firstly, connecting parts and fixing posts are cut out at the top of the square timber support column. Then, the transverse and longitudinal beams are connected by the first slot on the transverse beam and the second slot 301 on the longitudinal beam, forming a cross-shaped cross structure. Then, the reinforcing components are fixed to the connecting parts and fixing posts with fixing adhesive to strengthen the connecting parts and fixing posts. Finally, the transverse and longitudinal beams are inserted into the four fixing posts on the connecting parts, realizing the support of the square timber support column for the transverse and longitudinal beams. Due to the setting of the reinforcing components, the strength of the connecting parts and fixing posts can be guaranteed, preventing damage to the connecting parts and fixing posts when the transverse and longitudinal beams are connected to the connecting parts and fixing posts, ensuring the service life of the square timber support column, and facilitating the reuse of the square timber support column.

[0021] In the above solution, by setting up a reinforcing component, when fixing the reinforcing component to the connecting part and the fixed column, firstly, fixative adhesive is applied to the outer and upper surfaces of the connecting part, and then fixative adhesive is applied to the outer surface of the fixed column. Then, the rectangular sleeve on the reinforcing component is put onto the fixed column and pressed down so that the rectangular sleeve fits onto the connecting part. The fixed column passes through the rectangular hole. The fixative adhesive on the outer and upper surfaces of the connecting part adheres the rectangular sleeve to the connecting part, and the fixative adhesive on the outer surface of the fixed column adheres the L-shaped plate to the fixed column. The rectangular sleeve and the L-shaped plate reinforce the connecting part and the fixed column, preventing damage to the connecting part and the fixed column when the transverse beam and longitudinal beam are connected to the connecting part and the fixed column, thus ensuring the service life of the square timber support column. Attached Figure Description

[0022] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present disclosure and, together with the specification, further serve to explain the principles of the present disclosure and enable those skilled in the art to implement and use the present disclosure.

[0023] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram showing the three-dimensional structure of the present invention.

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the support column of the present invention;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the reinforcing component of the present invention;

[0027] Figure 5 This is a bottom view of the three-dimensional structure of the extremely strong component of the present invention;

[0028] Figure 6This is a cross-sectional view of the connection between the rectangular sleeve and the L-shaped plate in this utility model.

[0029] [Figure Labels]

[0030] 1. Support column; 101. Connecting part; 102. Fixing column; 2. Horizontal beam; 201. First slot; 3. Longitudinal beam; 301. Second slot; 4. Rectangular sleeve; 401. L-shaped plate; 402. Rectangular hole.

[0031] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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, they should not be construed as limitations on this invention.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, an embodiment of the present invention provides a recycled timber for column support and its usage method, including a timber support column 1, a transverse beam 2 and a longitudinal beam 3. The bottom of the timber support column 1 is integrally formed with a connecting part 101, and the top four corners of the connecting part 101 are integrally formed with fixing posts 102. Reinforcing components are fixedly provided on the connecting part 101 and the fixing posts 102 by fixing adhesive. A first slot 201 is provided in the center of the upper surface of the transverse beam 2, and a second slot 301 is provided in the center of the bottom surface of the longitudinal beam 3. The transverse beam 2 and the longitudinal beam 3 are engaged by the first slot 201 and the second slot 301, and both the transverse beam 2 and the longitudinal beam 3 are engaged in the middle of the four fixing posts 102.

[0035] In this embodiment, the heights of the transverse beam 2 and the longitudinal beam 3 are both equal to the height of the fixed column 102, so that when the transverse beam 2 and the longitudinal beam 3 are inserted between the four fixed columns 102 on the connecting part 101, the horizontal height of the upper surface of the transverse beam 2 and the longitudinal beam 3 is equal to the horizontal height of the upper surface of the fixed column 102.

[0036] In this embodiment, the thickness of both the transverse beam 2 and the longitudinal beam 3 is equal to the distance between two adjacent fixed columns 102, which facilitates the insertion of the transverse beam 2 and the longitudinal beam 3 between two adjacent fixed columns 102.

[0037] In this embodiment, the width of the first slot 201 and the second slot 301 are both equal to the thickness of the transverse beam 2 and the longitudinal beam 3, which facilitates the connection of the transverse beam 2 and the longitudinal beam 3 through the first slot 201 and the second slot 301, and makes the transverse beam 2 and the longitudinal beam 3 cross-shaped.

[0038] In this embodiment, the height of the first slot 201 and the second slot 301 are both equal to 1 / 2 of the height of the transverse beam 2 and the longitudinal beam 3, so that when the transverse beam 2 and the longitudinal beam 3 are connected by the first slot 201 and the second slot 301, the upper and lower surfaces of the transverse beam 2 and the longitudinal beam 3 are at the same horizontal height.

[0039] By providing a connecting part 101 and a fixing post 102, when the square timber serves as a support column to support the transverse beam 2 and the longitudinal beam 3, the connecting part 101 and the fixing post 102 are first cut out at the top of the square timber support column 1. Then, the transverse beam 2 and the longitudinal beam 3 are connected by the first slot 201 on the transverse beam 2 and the second slot 301 on the longitudinal beam 3, forming a cross-shaped intersecting structure. Finally, the reinforcing component is fixed to the connecting part 101 and the fixing post 102 using adhesive. The crossbeams 2 and 3 are reinforced with the fixed columns 102, and then the crossbeams 2 and 3 are inserted into the four fixed columns 102 on the connecting part 101. This enables the square timber support column 1 to support the crossbeams 2 and 3. Due to the reinforcement components, the strength of the connecting part 101 and the fixed columns 102 can be guaranteed, preventing damage to the connecting part 101 and the fixed columns 102 when the crossbeams 2 and 3 are connected to them. This ensures the service life of the square timber support column 1 and facilitates its reuse.

[0040] Reference Figures 4-6 As shown, in this embodiment, the reinforcing component includes a rectangular sleeve 4, an L-shaped plate 401, and a rectangular hole 402. The L-shaped plate 401 is fixedly installed at each of the four corners of the upper surface of the rectangular sleeve 4, and a rectangular hole 402 is opened at each of the four corners of the upper surface of the rectangular sleeve 4.

[0041] In this embodiment, the outer side length of the rectangular sleeve 4 matches the side length of the square timber support column 1, and the side length of the central through hole of the rectangular sleeve 4 matches the side length of the connecting part 101, so that the rectangular sleeve 4 can be fitted onto the connecting part 101.

[0042] In this embodiment, the rectangular hole 402 is matched with the fixing post 102, so that the fixing post 102 can pass through the rectangular hole 402.

[0043] In this embodiment, when the rectangular sleeve 4 is fitted onto the connecting part 101, the top of the connecting part 101 is attached to the inner top of the rectangular sleeve 4, and the bottom of the rectangular sleeve 4 is attached to the bottom of the square timber support column 1. At this time, the fixing column 102 passes through the rectangular hole 402, and the outer surface of the fixing column 102 is attached to the inner surface of the L-shaped plate 401, so that the L-shaped plate 401 can strengthen the fixing column 102.

[0044] In this embodiment, the reinforcing component is made of stainless steel, which has the characteristics of corrosion resistance and high strength, ensuring the strength of the reinforcing component.

[0045] By incorporating a reinforcing component, when fixing the reinforcing component to the connecting part 101 and the fixing column 102, firstly, adhesive is applied to the outer and upper surfaces of the connecting part 101, and then adhesive is applied to the outer surface of the fixing column 102. Next, the rectangular sleeve 4 on the reinforcing component is fitted onto the fixing column 102, and the rectangular sleeve 4 is pressed downwards, causing it to fit onto the connecting part 101. The fixing column 102 passes through the rectangular hole 402. The adhesive on the outer and upper surfaces of the connecting part 101 adheres the rectangular sleeve 4 to the connecting part 101, and the adhesive on the outer surface of the fixing column 102 adheres the L-shaped plate 401 to the fixing column 102. The rectangular sleeve 4 and the L-shaped plate 401 reinforce the connecting part 101 and the fixing column 102, preventing damage to the connecting part 101 and the fixing column 102 when the transverse beam 2 and the longitudinal beam 3 are connected to them, thus ensuring the service life of the timber support column 1.

[0046] A recycled timber method for column support includes the following steps:

[0047] Step 1: The first slot 201 on the transverse beam 2 and the second slot 301 on the longitudinal beam 3 connect the transverse beam 2 and the longitudinal beam 3, so that the transverse beam 2 and the longitudinal beam 3 form a cross-shaped intersecting structure. Step 2: The transverse beam 2 and the longitudinal beam 3 are inserted into the four fixed posts 102 on the connecting part 101, so that the square timber support post 1 supports the transverse beam 2 and the longitudinal beam 3. Due to the setting of the reinforcing component, the strength of the connecting part 101 and the fixed post 102 can be guaranteed.

[0048] Step 3: The outer side length of the rectangular sleeve 4 matches the side length of the square timber support column 1, and the side length of the central through hole of the rectangular sleeve 4 matches the side length of the connecting part 101, so that the rectangular sleeve 4 can be fitted onto the connecting part 101.

[0049] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A recycled timber batten for use in column bracing, characterised in that, The utility model provides a square wood support column (1), transverse beam (2) and longitudinal beam (3), the bottom of square wood support column (1) is integrally formed with connecting portion (101), the top four corners of connecting portion (101) are integrally formed with fixed column (102), and the upper surface of transverse beam (2) is provided with first clamping groove (201) in the middle, the bottom surface of longitudinal beam (3) is provided with second clamping groove (301) in the middle, and the transverse beam (2) and longitudinal beam (3) are clamped through first clamping groove (201) and second clamping groove (301), and the transverse beam (2) and longitudinal beam (3) are clamped in the middle of four fixed columns (102).

2. A recycled timber baulk for use in column bracing according to claim 1, characterised in that: The height of the transverse beam (2) and longitudinal beam (3) is equal to the height of the fixed column (102).

3. A recycled timber batten for use in column bracing according to claim 2, characterised in that: The thickness of the transverse beam (2) and longitudinal beam (3) is equal to the distance between the adjacent two fixed columns (102).

4. A recycled timber sill for use in column support according to claim 3, characterised in that: The width of the first clamping groove (201) and second clamping groove (301) is equal to the thickness of the transverse beam (2) and longitudinal beam (3).

5. A recycled timber baulk for use in column bracing according to claim 4, characterised in that: The height of the first clamping groove (201) and second clamping groove (301) is equal to 1 / 2 of the height of the transverse beam (2) and longitudinal beam (3).

6. The recycled timber sill for use in column support according to claim 1, wherein: The reinforcing assembly comprises a rectangular sleeve (4), an L-shaped plate (401) and a rectangular hole (402), the upper surface of the rectangular sleeve (4) is provided with the L-shaped plate (401) at the four corners, the upper surface of the rectangular sleeve (4) is provided with the rectangular hole (402) at the four corners, and the reinforcing assembly is made of stainless steel.

7. A recycled timber sill for use in column support according to claim 6, characterised in that: The outer side length of the rectangular sleeve (4) matches the side length of the square wood support column (1), and the central through hole side length of the rectangular sleeve (4) matches the side length of the connecting portion (101).

8. A recycled timber batten for use in column bracing according to claim 7, characterised in that: The rectangular hole (402) matches the fixed column (102).

9. A recycled timber sill for use in column support according to claim 8, characterised in that: When the rectangular sleeve (4) is sleeved on the connecting portion (101), the top of the connecting portion (101) is attached to the inner top of the rectangular sleeve (4), the bottom of the rectangular sleeve (4) is attached to the bottom of the square wood support column (1), the fixed column (102) penetrates into the rectangular hole (402) at this time, and the outer side surface of the fixed column (102) is attached to the inner surface of the L-shaped plate (401).

10. A recycled timber batten for use in the support of a post and its method of use as claimed in any one of claims 1 to 9, characterised in that, The utility model provides a square wood support column (1), transverse beam (2) and longitudinal beam (3), the bottom of square wood support column (1) is integrally formed with connecting portion (101), the top four corners of connecting portion (101) are integrally formed with fixed column (102), and the upper surface of transverse beam (2) is provided with first clamping groove (201) in the middle, the bottom surface of longitudinal beam (3) is provided with second clamping groove (301) in the middle, and the transverse beam (2) and longitudinal beam (3) are clamped through first clamping groove (201) and second clamping groove (301), and the transverse beam (2) and longitudinal beam (3) are clamped in the middle of four fixed columns (102). The height of the transverse beam (2) and longitudinal beam (3) is equal to the height of the fixed column (102). The thickness of the transverse beam (2) and longitudinal beam (3) is equal to the distance between the adjacent two fixed columns (102). The width of the first clamping groove (201) and second clamping groove (301) is equal to the thickness of the transverse beam (2) and longitudinal beam (3). The height of the first clamping groove (201) and second clamping groove (301) is equal to 1 / 2 of the height of the transverse beam (2) and longitudinal beam (3). The reinforcing assembly comprises a rectangular sleeve (4), an L-shaped plate (401) and a rectangular hole (402), the upper surface of the rectangular sleeve (4) is provided with the L-shaped plate (401) at the four corners, the upper surface of the rectangular sleeve (4) is provided with the rectangular hole (402) at the four corners, and the reinforcing assembly is made of stainless steel. The outer side length of the rectangular sleeve (4) matches the side length of the square wood support column (1), and the central through hole side length of the rectangular sleeve (4) matches the side length of the connecting portion (101). The rectangular hole (402) matches the fixed column (102). When the rectangular sleeve (4) is sleeved on the connecting portion (101), the top of the connecting portion (101) is attached to the inner top of the rectangular sleeve (4), the bottom of the rectangular sleeve (4) is attached to the bottom of the square wood support column (1), the fixed column (102) penetrates into the rectangular hole (402) at this time, and the outer side surface of the fixed column (102) is attached to the inner surface of the L-shaped plate (401). The utility model provides a square wood support column (1), transverse beam (2) and longitudinal beam (3), the bottom of square wood support column (1) is integrally formed with connecting portion (101), the top four corners of connecting portion (101) are integrally formed with fixed column (102), and the upper surface of transverse beam (2) is provided with first clamping groove (201) in the middle, the bottom surface of longitudinal beam (3) is provided with second clamping groove (301) in the middle, and the transverse beam (2) and longitudinal beam (3) are clamped through first clamping groove (201) and second clamping groove (301), and the transverse beam (2) and longitudinal beam (3) are clamped in the middle of four fixed columns (102). The height of the transverse beam (2) and longitudinal beam (3) is equal to the height of the fixed column (102). The thickness of the transverse beam (2) and longitudinal beam (3) is equal to the distance between the adjacent two fixed columns (102). The width of the first clamping groove (201) and second clamping groove (301) is equal to the thickness of the transverse beam (2) and longitudinal beam (3). The height of the first clamping groove (201) and second clamping groove (301) is equal to 1 / 2 of the height of the transverse beam (2) and longitudinal beam (3). The reinforcing assembly comprises a rectangular sleeve (4), an L-shaped plate (401) and a rectangular hole (402), the upper surface of the rectangular sleeve (4) is provided with the L-shaped plate (401) at the four corners, the upper surface of the rectangular sleeve (4) is provided with the rectangular hole (402) at the four corners, and the reinforcing assembly is made of stainless steel. The outer side length of the rectangular sleeve (4) matches the side length of the square wood support column (1), and the central through hole side length of the rectangular sleeve (4) matches the side length of the connecting portion (101). The rectangular hole (402) matches the fixed column (102). When the rectangular sleeve (4) is sleeved on the connecting portion (101), the top of the connecting portion (101) is attached to the inner top of the rectangular sleeve (4), the bottom of the rectangular sleeve (4) is attached to the bottom of the square wood support column (1), the fixed column (102) penetrates into the rectangular hole (402) at this time, and the outer side surface of the fixed column (102) is attached to the inner surface of the L-shaped plate (401). The utility model provides a square wood support column (1), transverse beam (2) and longitudinal beam (3), the bottom of square wood support column (1) is integrally formed with connecting portion (101), the top four corners of connecting portion (101) are integrally formed with fixed column (102), and the upper surface of transverse beam (2) is provided with first clamping groove (201) in the middle, the bottom surface of longitudinal beam (3) is provided with second clamping groove (301) in the middle, and the transverse beam (2) and longitudinal beam (3) are clamped through first clamping groove (201) and second clamping groove (301), and the transverse beam (2) and longitudinal beam (3) are clamped in the middle of four fixed columns (102). The height of the transverse beam (2) and longitudinal beam (3) is equal to the height of the fixed column (102). The thickness of the transverse beam (2) and longitudinal beam (3) is equal to the distance between the adjacent two fixed columns (102). The width of the first clamping groove (201) and second clamping groove (301) is equal to the thickness of the transverse beam (2) and longitudinal beam (3). The height of the first clamping groove (201) and second clamping groove (301) is equal to 1 / 2 of the height of the transverse beam (2) and longitudinal beam (3). The reinforcing assembly comprises a rectangular sleeve (4), an L-shaped plate (401) and a rectangular hole (402), the upper surface of the rectangular sleeve (4) is provided with the L-shaped plate (401) at the four corners Step three: the outer side length of the rectangular sleeve (4) matches the side length of the square wood support column (1), and the central through hole side length of the rectangular sleeve (4) matches the side length of the connecting part (101), so that the rectangular sleeve (4) is sleeved on the connecting part (101).

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