Fragrant fir solid wood composite floor
By designing the laminated structure and connection parts of Xiangshan solid wood composite floor, the problems of perishable and cracked wood floors are solved, the structure is stable and long service life is achieved, and it is easy to clean, meeting consumers' demand for stability and aesthetics .
Patent Information
- Application Number
- CN202421113969.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-21
AI Technical Summary
Wooden floors are prone to rot, cracking, warping and other problems, and are priced at a high level, have high service life and maintenance costs, which hinder consumers' willingness to buy.
A kind of solid wood composite floor of scented fir is designed, including wood grain paper layer, poplar layer, countergrain wood board, scented fir layer and coating layer. Through the design of laminated structure and connecting parts, the compression and shear resistance of the board body is improved. Performance and waterproof and moisture-proof ability ensure structural stability and service life.
It realizes the stable structure of Xiangshan solid wood composite flooring, long service life and easy to clean, avoids corrosion and corrosion, and is greener, safer and more convenient to process than traditional methods.
Smart Images
Figure CN222314484U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flooring, in particular to a fir solid wood composite floor. Background Art
[0002] Wood flooring is a floor made of wood. The natural aroma released by wood can make people feel happy and make the indoor environment more cozy. However, compared with tile floors, wood flooring is more prone to rotting, cracking, warping and other problems, and the price of wood flooring is relatively high. Although many consumers like wood flooring, the service life and maintenance of wood flooring hinder consumers' willingness to buy. Therefore, there is a real need and necessity to provide a wood flooring with a stable structure and long service life. Utility Model Content
[0003] The utility model aims to provide a fir solid wood composite floor, which has a stable structure, a long service life and is easy to clean.
[0004] To achieve the above-mentioned purpose, the utility model discloses a fir solid wood composite floor, which includes a board body, wherein the board body includes a wood grain paper layer, a first poplar layer, a first eucalyptus layer, a fir layer, a second poplar layer and a moisture-proof and anti-corrosion covering layer which are stacked and fixed in sequence from top to bottom, wherein the first poplar layer, the first eucalyptus layer, the fir layer and the second poplar layer are bonded in sequence; the first poplar layer, the fir layer and the second poplar layer are all along-grain wood boards, and the first eucalyptus layer is a reverse-grain wood board; the thickness of the board body is 10 to 30 mm, and the thickness of the fir layer accounts for 80 to 85% of the thickness of the board body.
[0005] Through the above arrangement, the fir layer is used as the core layer of the board body. The fir wood has a straight texture and has good corrosion resistance and insect resistance. The first eucalyptus layer can balance the overall structure and achieve an upper and lower balance effect. The first poplar layer and the second poplar layer can play a buffering role, making the whole more suitable for pressing; in addition, the first poplar layer, the fir layer, and the second poplar layer are all straight-grain wood boards, and the first eucalyptus layer is a reverse-grain wood board. This arrangement can make the board body have good compression and shear resistance as a whole, ensure the structural stability of the board body, and ensure the service life of the board body. The upper surface layer of the board body is a wood grain paper layer, and the pattern on it is highly similar to the natural wood grain, but it can be more conducive to the aesthetics of the floor splicing, and compared with the exposed natural wood grain, the wood grain paper is more conducive to cleaning and has a good waterproof effect. The lower surface layer of the board body is a coating layer. By coating the bottom surface of the body, it can play a good role in waterproofing and moisture-proofing, thereby avoiding corrosion and rotting of the board body, and further ensuring the service life of the board body. Compared with the existing practice of directly soaking the board body in preservatives, it is more green and safe, and the processing is also more convenient.
[0006] Preferably, the thickness of the fir layer is 8-25 mm; the thickness of the first poplar layer and the second poplar layer is the same, the thickness of the first poplar layer is 0.2-1 mm, the thickness of the first eucalyptus layer is 2-4 mm, the thickness of the wood grain paper layer is 0.1-0.4 mm, and the thickness of the coating layer is 0.1-0.2 mm. Through the above configuration, the thickness of each layer is reasonably distributed, which is conducive to ensuring the structural strength and stability of the board.
[0007] Preferably, the board body further includes a second eucalyptus layer disposed between the fir layer and the second poplar layer, the second eucalyptus layer is a reverse-grain wood board, and the thickness of the second eucalyptus layer is the same as that of the first eucalyptus layer. By providing the second eucalyptus layer, the overall structure is further balanced.
[0008] Preferably, one of the short sides of the plate body is integrally formed with a first connector, and the other short side of the plate body is integrally formed with a second connector; the first connector of any plate body can be mortise-jointed with the second connector of another plate body. By providing the first connector and the second connector, the connection and fixation between the plates can be facilitated, which is beneficial to the laying of the floor.
[0009] Preferably, the first connecting member includes a first vertical side, a first horizontal side, a second vertical side, a second horizontal side, a first oblique side, a third horizontal side and a third vertical side connected in sequence, the first vertical side and the first horizontal side form a first convex edge, the first horizontal side, the second vertical side, the second horizontal side and the first oblique side form a slot, the first oblique side and the third horizontal side form a stop boss, the second horizontal side, the first oblique side, the third horizontal side and the third vertical side form a second convex edge, and the length of the second convex edge is greater than the length of the first convex edge; the second connecting member includes a fourth vertical side, a fourth horizontal side, a fifth vertical side, a second oblique side, a fifth horizontal side, a third oblique side, a sixth horizontal side and a sixth vertical side connected in sequence, the fourth vertical side The fourth horizontal side forms a first recess matched with the first convex edge, the fourth horizontal side, the fifth vertical side, the second oblique side and the fifth horizontal side form a block matched with the slot, and the third oblique side, the sixth horizontal side and the sixth vertical side form a second recess matched with the stop boss; when the first connecting member of any plate body is mortise-jointed with the second connecting member of the other plate body, the first vertical side abuts against the fourth vertical side, the first horizontal side abuts against the fourth horizontal side, a first gap is formed between the second vertical side and the fifth vertical side, the second horizontal side abuts against the fifth horizontal side, the first oblique side abuts against the third oblique side, a second gap is formed between the third horizontal side and the sixth horizontal side, and a third gap is formed between the third vertical side and the sixth vertical side.
[0010] Through the above arrangement, when the first connecting piece of any plate body can be mortised with the second connecting piece of the other plate body, the two plates can be limited in the upper and lower directions by the first horizontal side abutting against the fourth horizontal side and the second horizontal side abutting against the fifth horizontal side, and the two plates can be limited in the horizontal direction by the first vertical side abutting against the fourth vertical side and the first oblique side abutting against the third oblique side, which is convenient for installation. At the same time, a first gap is formed between the second vertical side and the fifth vertical side, a second gap is formed between the third horizontal side and the sixth horizontal side, and a third gap is formed between the third vertical side and the sixth vertical side. The arrangement of these gaps can provide a certain deformation space and error space for the plate body, which is convenient for floor installation and prevents the floor from bulging due to slight deformation of the plate body.
[0011] Preferably, a fourth oblique side is provided between the first vertical side and the first horizontal side to avoid the fourth horizontal side, and a fifth oblique side is provided between the third horizontal side and the third vertical side to avoid the sixth vertical side. The above arrangement can facilitate the mortise and tenon joint between the plates.
[0012] Preferably, the first vertical side is further provided with a sixth bevel on the side away from the first horizontal side, and the fourth vertical side is further provided with a seventh bevel on the side away from the fourth horizontal side, and when the first connecting member of any one of the plates is mortised with the second connecting member of the other plate, the lower end of the sixth bevel and the lower end of the seventh bevel abut against each other, and the angle between the lower end of the sixth bevel and the seventh bevel is 60 to 120 degrees. With this arrangement, burrs are less likely to form at the joint of the plate.
[0013] Preferably, the plate body is also provided with a plurality of plate layer limiting holes, the plate layer limiting holes are located below the wood grain paper layer, and the plate layer limiting holes are connected with limiting pieces. With such a configuration, the connection between the plate layers can be made tighter, and the plate layers are less likely to be laterally peeled off, which is particularly suitable for use in sports venues and other occasions. The limiting pieces are hidden under the wood grain paper layer and are not obtrusive.
[0014] Preferably, the fir layer is provided with a plurality of blind holes, the first poplar layer is provided with a plurality of first through holes, the first eucalyptus layer is provided with a plurality of second through holes, the fir layer is provided with a plurality of blind holes, and the first through holes, the second through holes and the blind holes correspond to each other and constitute the board layer limiting holes. After such arrangement, only the board layer above the fir layer is limited to balance the convenience of the production process.
[0015] Preferably, the apertures of the first through hole, the second through hole and the blind hole are consistent; or, the apertures of the first through hole, the second through hole and the blind hole are increased in sequence; when the apertures of the first through hole, the second through hole and the blind hole are increased in sequence, the stopper is made of hard resin. The stopper is made of hard resin solidified, and the stopper can be installed (infused) after the lamination of the wood board layers is completed. In this way, the above-mentioned holes do not need to be precisely aligned, which is conducive to improving processing efficiency.
[0016] The utility model has the following beneficial effects:
[0017] The plate body of the utility model has a reasonable plate layer structure, and the plate body has a stable structure, a long service life, and is easy to clean. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of embodiment 1.
[0019] Figure 2 It is a cross-sectional schematic diagram of embodiment 1.
[0020] Figure 3 This is a schematic diagram of the plates of Example 1 when they are mortised to each other.
[0021] Figure 4 This is a schematic diagram of the second embodiment.
[0022] Figure 5 This is a schematic diagram of Example 3.
[0023] Figure 6 This is a schematic diagram of Embodiment 4.
[0024] Main component symbols:
[0025] Board body 10, wood grain paper layer 11, first poplar layer 12, first eucalyptus layer 13, fir layer 14, second poplar layer 15, film layer 16, second eucalyptus layer 17;
[0026] Sixth oblique side 21, first vertical side 22, fourth oblique side 23, first transverse side 24, second vertical side 25, second transverse side 26, first oblique side 27, third transverse side 28, fifth oblique side 29, third vertical side 30, first convex edge 31, stop boss 32, second convex edge 33, seventh oblique side 34, fourth vertical side 35, fourth transverse side 36, fifth vertical side 37, second oblique side 38, fifth transverse side 39, third oblique side 40, sixth transverse side 41, sixth vertical side 42, block 43, first gap 44, second gap 45, third gap 46;
[0027] The limiting member 50. DETAILED DESCRIPTION
[0028] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.
[0029] Embodiment 1
[0030] like Figure 1As shown, this embodiment discloses a fir solid wood composite floor, which includes a board body 10, which includes a wood grain paper layer 11, a first poplar layer 12, a first eucalyptus layer 13, a fir layer 14, a second poplar layer 15, and a moisture-proof and anti-corrosion coating layer 16 stacked and fixed in sequence from top to bottom, wherein the first poplar layer 12, the first eucalyptus layer 13, the fir layer 14, and the second poplar layer 15 are bonded and fixed in sequence by an adhesive. The wood grain paper layer 11 can be directly bonded to the upper surface of the first poplar layer 12 by using wood grain paper, or formed by spraying resin or paint on the upper surface of the first poplar layer 12. The coating layer 16 is formed by directly coating moisture-proof and anti-corrosion resin or paint on the lower surface of the second poplar layer 15.
[0031] In this embodiment, the first poplar wood layer 12, the fir wood layer 14, and the second poplar wood layer 15 are all parallel-grain wood boards, and the first eucalyptus wood layer 13 is a reverse-grain wood board. This arrangement can make the board body 10 as a whole have good compression and shear resistance, ensure the structural stability of the board body 10, and ensure the service life of the board body 10.
[0032] The thickness of the board body 10 is 10 to 30 mm, and the thickness of the fir layer 14 is required to account for 80 to 85% of the thickness of the board body 10. The thickness of the fir layer 14 is preferably 8 to 25 mm. The fir layer 14 is the core layer of the board body 10, and is directly cut from fir trees that are at least 30 years old. It has a high fir alcohol content, a natural and lasting fragrance, and good antibacterial, antiseptic, and insect-proof properties. It has a compact density, straight texture, and high strength, and can adapt to the humid climate in the south. The thickness of the first eucalyptus layer 13 is 2 to 4 mm. The first eucalyptus layer 13 can balance the overall structure to achieve an upper and lower balance effect. The first poplar layer 12 and the second poplar layer 15 have the same thickness, which is 0.2 to 1 mm. The setting of the first poplar layer 12 and the second poplar layer 15 can play a buffering role, making the whole more suitable for pressing.
[0033] The upper surface of the board body 10 is a wood grain paper layer 11, which has a thickness of 0.1 to 0.4 mm. The pattern on it is highly similar to the natural wood grain, but it can be more conducive to the aesthetics of the floor splicing. Compared with the exposed natural wood grain, the wood grain paper is more convenient to clean and has a good waterproof effect. The lower surface of the board body 10 is a coating layer 16, which has a thickness of 0.1 to 0.2 mm. By coating the bottom surface of the body, it can play a good waterproof and moisture-proof role, thereby preventing the board body 10 from corroding and rotting, and further ensuring the service life of the board body 10. Compared with the existing method of directly soaking the board body 10 in a preservative, it is more green and safe, and the processing is also more convenient.
[0034] like Figure 2 and Figure 3As shown, in order to facilitate the connection between the panels 10, that is, to facilitate the laying of the floor, a first connector is integrally formed on one short side of the panel 10, and a second connector is integrally formed on the other short side of the panel 10. The first connector of any panel 10 can be mortise-jointed with the second connector of another panel 10. The first connector and the second connector can be planed out after the panel 10 is laminated.
[0035] Specifically, the first connecting member includes a sixth oblique side 21, a first vertical side 22, a fourth oblique side 23, a first horizontal side 24, a second vertical side 25, a second horizontal side 26, a first oblique side 27, a third horizontal side 28, a fifth oblique side 29 and a third vertical side 30 connected in sequence, wherein the sixth oblique side 21, the first vertical side 22, the fourth oblique side 23 and the first horizontal side 24 form a first convex edge 31, the first horizontal side 24, the second vertical side 25, the second horizontal side 26 and the first oblique side 27 form a clamping groove, the first oblique side 27 and the third horizontal side 28 form a stop boss 32, and the second horizontal side 26, the first oblique side 27, the third horizontal side 28, the fifth oblique side 29 and the third vertical side 30 form a second convex edge 33. The length L1 of the second convex edge 33 is greater than the length L2 of the first convex edge 31.
[0036] The second connecting member includes a seventh oblique side 34, a fourth vertical side 35, a fourth horizontal side 36, a fifth vertical side 37, a second oblique side 38, a fifth horizontal side 39, a third oblique side 40, a sixth horizontal side 41 and a sixth vertical side 42 connected in sequence, wherein the seventh oblique side 34, the fourth vertical side 35 and the fourth horizontal side 36 form a first recess adapted to the first flange 31, the fourth horizontal side 36, the fifth vertical side 37, the second oblique side 38, the fifth horizontal side 39 and the third oblique side 40 form a block 43 adapted to the slot, and the third oblique side 40, the sixth horizontal side 41 and the sixth vertical side 42 form a second recess adapted to the stop boss 32.
[0037] When the first connecting member of any plate body 10 is mortised with the second connecting member of another plate body 10, the block 43 is inserted into the mortise slot, and the first convex edge 31 is abutted against the first notch, and the stop boss 32 is limited by the second notch. During the mortise process, the fourth bevel 23 can avoid the fourth horizontal edge 36, and the fifth bevel 29 can avoid the sixth vertical edge 42, so as to facilitate the mortise between the plate bodies 10. Specifically, during the mortise, the lower end of the sixth bevel 21 and the lower end of the seventh bevel 34 abut against each other, and the angle between the lower end of the sixth bevel 21 and the seventh bevel 34 is 60 to 120°, preferably 90°, that is, the sixth bevel 21 and the seventh bevel 34 form a triangular groove with the tip facing downward. After such a setting, the joint position of the plate body 10 is less likely to burr during installation and use. After the floor is laid, this triangular groove can be filled with sealant to seal the joint between the plate bodies 10. By the first horizontal side 24 abutting against the fourth horizontal side 36 and the second horizontal side 26 abutting against the fifth horizontal side 39, the two plates 10 can achieve upper and lower position limits, and by the first vertical side 22 abutting against the fourth vertical side 35 and the first oblique side 27 abutting against the third oblique side 40, the two plates 10 can achieve horizontal position limits. In addition, when mortise and tenon joints are made, a first gap 44 is formed between the second vertical side 25 and the fifth vertical side 37, a second gap 45 is formed between the third horizontal side 28 and the sixth horizontal side 41, and a third gap 46 is formed between the third vertical side 30 and the sixth vertical side 42. The setting of these gaps can provide a certain deformation space and error space for the plate body 10, which is beneficial to the installation of the floor and prevents the floor from bulging due to slight deformation of the plate body 10.
[0038] Embodiment 2
[0039] like Figure 4 As shown, the difference between this embodiment and the first embodiment is that the board body 10 further includes a second eucalyptus layer 17 disposed between the fir layer 14 and the second poplar layer 15, the second eucalyptus layer 17 is also a reverse-grain wood board, and the thickness of the second eucalyptus layer 17 is the same as that of the first eucalyptus layer 13. By providing the second eucalyptus layer 17, the overall structure can be further balanced.
[0040] Embodiment 3
[0041] like Figure 5As shown, the difference between this embodiment and the first or second embodiment is that a plurality of board layer limiting holes are further provided on the board body 10, and the board layer limiting holes are located below the wood grain paper layer 11, so that the wood grain paper layer 11 can cover the board layer limiting holes. Specifically, a plurality of first through holes are provided on the first poplar layer 12, a plurality of second through holes are provided on the first eucalyptus layer 13, and a plurality of blind holes are provided on the fir layer 14. The first through holes, the second through holes and the blind holes correspond to each other and are interconnected to form the board layer limiting holes. In this embodiment, the apertures of the first through holes, the second through holes and the blind holes are consistent. The first through holes, the second through holes and the blind holes can be obtained at one time by drilling after the wood layer structure of the board body 10 is pressed together, or they can be obtained by drilling each before lamination. A limiting member 50 is glued to the limiting hole of the board layer. The limiting member 50 can be a wooden stick or can be obtained by curing resin. The cured resin is hard. The limiting member 50 uses hardened resin to avoid local depression of the wood grain paper layer 11. Moreover, when the first through hole, the second through hole and the blind hole are opened separately, the three holes do not need to be aligned very accurately during lamination. It is only necessary to ensure that the three are roughly aligned and connected. The board layer limiting hole can be filled by pouring glue, and the cured resin is the limiting member 50.
[0042] When the upper surface of the board body 10 is subjected to non-positive pressure, there will be a certain lateral force acting on the upper board layer. For example, when a basketball player changes direction and dribbles to break through, this lateral force is relatively large. The setting of the limiter 50 can play a certain buffering role for this lateral force. For the newly produced board body 10, because the board layers are tightly connected before, the effect of the limiter 50 is not obvious. However, after the board body 10 has been used for a long time, the adhesive connecting the board layers will age or even powderize. At this time, the limiter 50 can play a better buffering role, making the upper first poplar layer 12, the second poplar layer 15 and the fir layer 14 more tightly connected, and the three board layers are less likely to peel horizontally (horizontally when the board body 10 is laid on the ground), which delays the service life of the board body 10 to a certain extent, and is particularly suitable for use in sports venues and other occasions.
[0043] Embodiment 4
[0044] like Figure 6 As shown, the difference between this embodiment and the third embodiment is that the apertures of the first through hole, the second through hole and the blind hole are increased in sequence. At this time, the stopper 50 is made of only hard resin, and the first through hole, the second through hole and the blind hole are all opened before the board layers are pressed together. These three holes do not need to be precisely aligned, which is conducive to improving processing efficiency. In addition, the position of the stopper 50 set in this way is more stable.
[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.
Claims
1. A fir solid wood composite floor, characterized by: The invention comprises a board body, which comprises a wood grain paper layer, a first poplar layer, a first eucalyptus layer, a fragrant fir layer, a second poplar layer and a covering layer for moisture-proof and anti-corrosion, which are stacked and fixed in sequence from top to bottom, wherein the first poplar layer, the first eucalyptus layer, the fragrant fir layer and the second poplar layer are bonded in sequence; the first poplar layer, the fragrant fir layer and the second poplar layer are all along-grain wood boards, and the first eucalyptus layer is a reverse-grain wood board; the thickness of the board body is 10 to 30 mm, and the thickness of the fragrant fir layer accounts for 80 to 85% of the thickness of the board body.
2. The Chinese fir solid wood composite floor according to claim 1, characterized in that: The thickness of the fir layer is 8-25 mm; the thickness of the first poplar layer and the second poplar layer is the same, the thickness of the first poplar layer is 0.2-1 mm, the thickness of the first eucalyptus layer is 2-4 mm, the thickness of the wood grain paper layer is 0.1-0.4 mm, and the thickness of the coating layer is 0.1-0.2 mm.
3. The Chinese fir solid wood composite floor according to claim 1, characterized in that: The board body also includes a second eucalyptus layer arranged between the fir layer and the second poplar layer, the second eucalyptus layer is a reverse-grain wood board, and the thickness of the second eucalyptus layer is the same as that of the first eucalyptus layer.
4. The Chinese fir solid wood composite floor according to any one of claims 1 to 3, characterized in that: A first connecting piece is integrally formed on one short side of the plate body, and a second connecting piece is integrally formed on the other short side of the plate body; the first connecting piece of any one of the plate bodies can be mortise-jointed with the second connecting piece of another plate body.
5. The Chinese fir solid wood composite floor according to claim 4, characterized in that: The first connecting member includes a first vertical side, a first horizontal side, a second vertical side, a second horizontal side, a first oblique side, a third horizontal side and a third vertical side connected in sequence, the first vertical side and the first horizontal side form a first convex edge, the first horizontal side, the second vertical side, the second horizontal side and the first oblique side form a slot, the first oblique side and the third horizontal side form a stop boss, the second horizontal side, the first oblique side, the third horizontal side and the third vertical side form a second convex edge, and the length of the second convex edge is greater than the length of the first convex edge; the second connecting member includes a fourth vertical side, a fourth horizontal side, a fifth vertical side, a second oblique side, a fifth horizontal side, a third oblique side, a sixth horizontal side and a sixth vertical side connected in sequence, the fourth vertical side and the first The four horizontal sides form a first recess that is adapted to the first convex edge, the fourth horizontal side, the fifth vertical side, the second oblique side and the fifth horizontal side form a block that is adapted to the slot, and the third oblique side, the sixth horizontal side and the sixth vertical side form a second recess that cooperates with the stop boss; when the first connecting member of any plate body is mortise-jointed with the second connecting member of the other plate body, the first vertical side abuts against the fourth vertical side, the first horizontal side abuts against the fourth horizontal side, a first gap is formed between the second vertical side and the fifth vertical side, the second horizontal side abuts against the fifth horizontal side, the first oblique side abuts against the third oblique side, a second gap is formed between the third horizontal side and the sixth horizontal side, and a third gap is formed between the third vertical side and the sixth vertical side.
6. The Chinese fir solid wood composite floor according to claim 5, characterized in that: A fourth oblique side is provided between the first vertical side and the first horizontal side to avoid the fourth horizontal side, and a fifth oblique side is provided between the third horizontal side and the third vertical side to avoid the sixth vertical side.
7. The Chinese fir solid wood composite floor according to claim 5, characterized in that: A sixth oblique side is also provided on the side of the first vertical side away from the first horizontal side, and a seventh oblique side is also provided on the side of the fourth vertical side away from the fourth horizontal side. When the first connecting member of any one of the plates is mortise-jointed with the second connecting member of the other plate, the lower end of the sixth oblique side and the lower end of the seventh oblique side abut against each other, and the angle between the lower end of the sixth oblique side and the seventh oblique side is 60 to 120 degrees.
8. The Chinese fir solid wood composite floor according to any one of claims 1 to 3, characterized in that: The plate body is also provided with a plurality of plate layer limiting holes, the plate layer limiting holes are located below the wood grain paper layer, and limiting members are connected in the plate layer limiting holes.
9. The Chinese fir solid wood composite floor according to claim 8, characterized in that: The fir layer is provided with a plurality of blind holes, the first poplar layer is provided with a plurality of first through holes, the first eucalyptus layer is provided with a plurality of second through holes, and the fir layer is provided with a plurality of blind holes. The first through holes, the second through holes and the blind holes correspond to each other one by one and constitute the board layer limiting holes.
10. The Chinese fir solid wood composite floor according to claim 9, characterized in that: The apertures of the first through hole, the second through hole and the blind hole are consistent; or, the apertures of the first through hole, the second through hole and the blind hole increase successively; when the apertures of the first through hole, the second through hole and the blind hole increase successively, the limiter is made of hard resin.