CN214604922U - Discrete type all-bamboo cross laminated timber - Google Patents
Discrete type all-bamboo cross laminated timber Download PDFInfo
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- CN214604922U CN214604922U CN202120331853.9U CN202120331853U CN214604922U CN 214604922 U CN214604922 U CN 214604922U CN 202120331853 U CN202120331853 U CN 202120331853U CN 214604922 U CN214604922 U CN 214604922U
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Abstract
The utility model discloses a discrete type full bamboo cross laminated timber, which comprises at least two layers of first base materials arranged at intervals, wherein a bamboo unit pre-assembly is arranged between any two adjacent layers of the first base materials, the bamboo unit pre-assembly comprises a plurality of connecting bamboo woods distributed at intervals, and an adhesive layer is respectively arranged between any one connecting bamboo wood and two adjacent first base materials; the first base material is provided with a connecting nail, and the connecting nail penetrates through the first base material and the adhesive layer and is inserted into the connecting bamboo wood. The utility model discloses a full bamboo alternately laminated timber of discrete type has improved the utilization ratio of bamboo timber.
Description
Technical Field
The utility model relates to a compound long-pending material technical field of bamboo wood especially relates to a full bamboo cross layer long-pending material of discrete type.
Background
Bamboo resources in China are rich, bamboo has the advantages of short wood forming period, high yield, high density, high strength, strong toughness, wide application and the like, and related products of the bamboo are widely applied to many fields of production and life of people. But simultaneously, the bamboo has the structural characteristics of hollow cylindrical shape, bamboo joint diaphragm, bamboo green and tabasheer, large property difference between the bamboo and the bamboo, obvious longitudinal and transverse structure and property difference and the like, so that the industrial application of the bamboo is very difficult. The concrete expression is as follows: 1) the existing industrial products of bamboo materials, such as bamboo laminated wood, recombined bamboo, bamboo floors, bamboo shaving boards and the like, generally have the prominent problems of complicated raw material unit processing procedures, large energy consumption, low material utilization rate, higher requirement on processing equipment, low production efficiency and the like; 2) most of the existing bamboo industrial products are applied to the industries of furniture and home decoration, and the application of a small part of products such as recombined bamboo or bamboo laminated wood which can be applied to the industry of bearing building materials in the field of bearing members is always limited due to the outstanding problems of complex production process, overlarge density, overweight, high technical requirements on production equipment, higher production cost and the like.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a full bamboo alternately laminated timber of discrete type to solve the problem that above-mentioned prior art exists, improve the utilization ratio of bamboo timber.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a discrete type all-bamboo cross laminated timber, which comprises at least two layers of first base materials arranged at intervals, wherein a bamboo unit pre-assembly is arranged between any two adjacent layers of the first base materials, the bamboo unit pre-assembly comprises a plurality of connecting bamboo materials distributed at intervals, and an adhesive layer is respectively arranged between any one connecting bamboo material and two adjacent first base materials; the first base material is provided with a connecting nail, and the connecting nail penetrates through the first base material and the adhesive layer and is inserted into the connecting bamboo wood.
Preferably, the thickness of the discrete type all-bamboo cross laminated timber is uniform; the first base material is a wood specification material or a bamboo material; the first base material is continuously arranged or discretely arranged at intervals.
Preferably, the diameter of the connection bamboo wood is gradually reduced from one end to the other end, and the thickness of the first base material is gradually increased along the direction in which the diameter of the connection bamboo wood is reduced, namely, the sum of the diameter of the connection bamboo wood and the thickness of the first base material along the axial direction of the connection bamboo wood is a fixed value.
Preferably, only one side of any layer is provided with the first base material connected with the bamboo wood, and the side of the first base material far away from the connected bamboo wood is a plane.
Preferably, the side wall of the connection bamboo material is provided with two gluing surfaces which are symmetrically distributed about the axis of the connection bamboo material, and the two gluing surfaces are both planes.
The utility model also provides a manufacturing method of discrete full bamboo cross laminated timber, including following step:
(1) preparing a bamboo tube: cutting the raw bamboo into bamboo tubes according to the length requirement, wherein the cut length is required to meet the modulus requirement of the length of the building material; thus, a plurality of bamboo tubes are prepared;
(2) preheating the bamboo tube in a drying kiln with the initial drying temperature of 60 ℃ and the relative humidity of about 95% for 3 hours, then drying the bamboo tube in the drying kiln with the initial drying temperature of 60 ℃ and the relative humidity of about 75% for about 25 hours, and finally humidifying the bamboo tube in an environment with the temperature of 50 ℃ and the relative humidity of 85% for 4 hours to enable the moisture content of the bamboo wood to reach 10-13%;
(3) planing and cutting the bamboo tubes on a double-sided press planer or a four-sided planer to form a first gluing surface and a second gluing surface on each bamboo tube; the planning and cutting amount of two planning surfaces in the longitudinal direction of the bamboo tubes is kept to be 3-5 mm, so that the bamboo tubes form connection bamboo wood;
(4) preparing a first substrate: processing the first base material according to the taper degree of the connecting bamboo wood to obtain the first base material with required layers, wherein the thickness of the first base material needs to ensure that the thickness of the discrete type full-bamboo cross laminated wood obtained after the first base material and the connecting bamboo wood are compounded is uniform;
(5) uniformly placing one end of the connecting bamboo wood with larger diameter and the other end of the connecting bamboo wood with smaller diameter to form a bamboo unit pre-assembly, and enabling the first gluing surfaces and the second gluing surfaces of all the connecting bamboo wood to be horizontal top surfaces and horizontal bottom surfaces; firstly, roll-coating a cold-set structural adhesive on the first gluing surfaces of all the connected bamboo wood, laying and gluing the first base material on the first gluing surfaces of all the connected bamboo wood in a manner of being vertical to the pre-assembled bamboo unit blank, and then nailing the first base material by using connecting nails at intervals of 50mm along the central line direction of the first gluing surfaces; then turning over the connection bamboo wood, coating a cold-set structural adhesive on the second gluing surfaces of all the connection bamboo wood in a rolling mode, laying and gluing another layer of first base material on the second gluing surfaces of all the connection bamboo wood in a vertical mode, wherein the second gluing surfaces are perpendicular to the pre-assembled bamboo unit blanks, and then nailing the first base material on the connection bamboo wood at intervals of 50mm along the direction of the center line of the second gluing surfaces by using connection nails; when the number of layers of the first base material is equal to two, obtaining a composite bamboo unit;
(6) when the number of layers of the first base material is more than two, continuously gluing the bamboo unit pre-assembly on the first base material positioned in the middle; then continuously gluing another layer of the first base material on the other side of the newly glued bamboo unit pre-assembly; repeating the above steps; until the gluing of the first base material with the set number of layers is finished, so as to obtain a composite bamboo unit;
(7) and uniformly applying unit pressure of 2.0Mpa in the length direction of the composite bamboo unit to tightly press the pre-assembled bamboo unit blank and the first base material so as to compress the cold-setting structural adhesive and the effective curing pressure, wherein the pressing time is determined according to the type of the cold-setting structural adhesive and the outside air temperature.
The utility model discloses for prior art gain following technological effect:
the utility model discloses a full bamboo alternately laminated timber of discrete type has improved the utilization ratio of bamboo timber. The utility model discloses a full bamboo alternately laminated timber of discrete type has following advantage: (1) almost all bamboo utilization: the bamboo wood is only slightly sliced on two sides to form a gluing surface, and other parts are fully utilized; particularly, the reserved bamboo joint part plays a role in transverse compression resistance strengthening and collapse resistance on the bamboo-wood composite cross laminated timber; (2) simple processing and production, low energy consumption and low requirement on equipment. Only two-sided micro planing is needed, the machining cutting amount is small, and only a planing cutter needs to be changed on the basis of the existing plane planer or four-sided planer; (3) the product has light weight and high strength. The hollow original structure of the natural bamboo is reserved, the average density and the quality of the bamboo-wood composite cross laminated material can be greatly reduced while the strength is guaranteed, and the bamboo-wood composite cross laminated material is easier to install and use in the building; (4) has good heat insulation and moisture resistance. The hollow original structure of the bamboo wood enables the interior of the bamboo wood composite cross laminated wood to form a natural air layer, so that the bamboo wood composite cross laminated wood has good heat insulation and moisture resistance when being applied to building floor layers or walls; (5) the structure that first substrate and bamboo timber were arranged vertically and horizontally can overcome the lower defect of bamboo timber horizontal gluing intensity, is favorable to preventing the bamboo timber from horizontal conquassation on each unit bamboo timber with the pressure equipartition of the compound alternately laminated timber face of perpendicular to bamboo timber simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a discrete type all-bamboo cross laminated timber according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a discrete type all-bamboo cross laminated timber according to an embodiment of the present invention;
fig. 3 is a flow chart illustrating a method for manufacturing a discrete type all-bamboo cross laminated timber according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a two-discrete type all-bamboo cross laminated timber according to an embodiment of the present invention;
wherein: 100. discrete full-bamboo cross laminated timber; 200. pre-assembling the bamboo units; 1. a bamboo tube; 2. connecting the bamboo wood; 21. a first glue joint surface; 22. a second glue joint surface; 23. a first end; 24. a second end; 3. an adhesive layer; 4. a connecting nail; 5. a first substrate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model aims at providing a full bamboo alternately laminated timber of discrete type to solve the problem that above-mentioned prior art exists, improve the utilization ratio of bamboo timber.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
Example one
As shown in fig. 1 to 3: the embodiment provides a discrete type all-bamboo cross laminated timber 100, which comprises two layers of first base materials 5 arranged at intervals, wherein the first base materials 5 in the embodiment are wood-sized timber, the first base materials 5 can be continuously laid or alternately laid, a bamboo unit pre-assembly 200 is arranged between the two layers of first base materials 5, the bamboo unit pre-assembly 200 comprises a plurality of connecting bamboo woods 2 distributed at intervals, and an adhesive layer 3 is respectively arranged between any one connecting bamboo wood 2 and two adjacent first base materials 5; be provided with on the first substrate 5 and connect nail 4, connect nail 4 and pass first substrate 5 and adhesive layer 3 and insert and connect bamboo timber 2.
It should be noted that the thickness of the discrete all-bamboo cross laminated lumber 100 of the present embodiment is uniform. In practical production, the connecting bamboo material 2 often has a large end and a small end, the large end is defined as a first end 23, the small end is defined as a second section, the diameter of the connecting bamboo material 2 is gradually reduced from the first end 23 to the second end 24, so that in order to ensure that the thickness of the finally obtained discrete type all-bamboo cross laminated material 100 is uniform, the thickness of the first base material 5 needs to be gradually increased along the direction that the diameter of the connecting bamboo material 2 is reduced, namely the sum of the diameter of the connecting bamboo material 2 along the axial direction of the connecting bamboo material 2 and the thickness of the first base material 5 is a fixed value. One side of the first base material 5 far away from the connecting bamboo material 2 is a plane. The side wall of the connection bamboo wood 2 is provided with two glue joint surfaces which are symmetrically distributed about the axis of the connection bamboo wood 2, and the two glue joint surfaces are planes. In addition, in this embodiment, the length direction of first substrate 5 is perpendicular with the diameter direction who connects bamboo timber 2, so, can overcome the lower defect of the horizontal cementing intensity of bamboo timber, is favorable to preventing the horizontal conquassation of bamboo timber with the pressure equipartition of the compound cross laminated timber face of perpendicular to bamboo timber on each unit bamboo timber simultaneously.
The present embodiment further provides a manufacturing method of the discrete all-bamboo cross laminated timber 100, which includes the following steps:
(1) preparing a bamboo tube 1: cutting the raw bamboo into a bamboo tube 1 according to the length requirement, wherein the raw bamboo is generally dragon bamboo with the wall thickness of 15-20mm and the diameter of about 100-150mm, the cutting length needs to meet the modulus requirement of the length of the building material, and the cutting length of the bamboo tube 1 in the embodiment is 4500 +/-50 mm-6000 mm +/-50 mm; thus, a plurality of bamboo tubes 1 are prepared;
(2) preheating the bamboo tube 1 in a drying kiln with the initial drying temperature of 60 ℃ and the relative humidity of about 95% for 3 hours, then drying the bamboo tube 1 in the drying kiln with the initial drying temperature of 60 ℃ and the relative humidity of about 75% for about 25 hours, and finally humidifying for 4 hours in an environment with the temperature of 50 ℃ and the relative humidity of 85% to enable the moisture content of the bamboo wood to reach 10-13%;
(3) planing the bamboo tubes 1 on a double-sided press planer or a four-sided planer to form a first gluing surface 21 and a second gluing surface 22 on each bamboo tube 1; the planning and cutting amount of two planning surfaces in the longitudinal direction of the bamboo tubes 1 is kept to be 3-5 mm, so that the bamboo tubes 1 form the connecting bamboo 2;
(4) preparing a first substrate 5: processing the first base material 5 according to the taper degree of the connecting bamboo wood 2 to obtain the first base material 5 with required layers, wherein the thickness of the first base material 5 needs to ensure that the thickness of the discrete type all-bamboo cross laminated wood 100 obtained after the first base material 5 and the connecting bamboo wood 2 are compounded is uniform;
(5) uniformly placing one end with a larger diameter and the other end with a smaller diameter of a plurality of connected bamboo woods 2 to form a bamboo unit pre-assembly 200, and enabling first gluing surfaces 21 of all the connected bamboo woods 2 to be horizontal top surfaces and second gluing surfaces 22 to be horizontal bottom surfaces; firstly, all the first connecting bamboo materials 2A cold-setting adhesive (such as polyurethane or resorcinol based adhesive) is roll-coated on the adhesive surface 21, and the coating weight is 250g/m2Laying and gluing a first base material 5 on the first gluing surfaces 21 of all the connected bamboo materials 2 in a direction vertical to the bamboo unit pre-assembly 200, and then nailing the first base material 5 by self-tapping wood screws, namely the connecting nails 4 along the central line direction of the first gluing surfaces 21 at intervals of 50 mm; then, the connecting bamboo materials 2 are turned over, cold-set structural adhesive is coated on the second gluing surfaces 22 of all the connecting bamboo materials 2 through rollers, another layer of first base material 5 is laid and glued on the second gluing surfaces 22 of all the connecting bamboo materials 2 in the longitudinal direction perpendicular to the bamboo unit pre-assembly 200, and then the connecting nails 4 are nailed along the central line direction of the second gluing surfaces 22 at intervals of 50mm through self-tapping wood screws; thus obtaining a composite bamboo unit;
(6) uniformly applying 2.0Mpa unit pressure in the length direction of the composite bamboo unit to tightly press the bamboo unit pre-assembly 200 and the first base material 5 so as to compress the cold-setting structural adhesive and the effective curing pressure, wherein the pressing time is determined according to the type of the cold-setting structural adhesive and the outside air temperature.
Example two
As shown in fig. 4: the present embodiment provides a discrete all-bamboo cross laminated timber 100, which is different from the discrete all-bamboo cross laminated timber 100 provided in the first embodiment in that: the discrete all-bamboo cross laminated wood 100 in the embodiment includes three first substrates 5 and two bamboo unit pre-assembly 200, while the discrete all-bamboo cross laminated wood 100 in the first embodiment includes only two first substrates 5 and one bamboo unit pre-assembly 200; it should be noted that the discrete all-bamboo cross laminated timber 100 claimed in the present application is not limited to the above two embodiments, and the discrete all-bamboo cross laminated timber 100 obtained by simply changing the embodiments in the present application and combining the first substrate 5 with more layers and the bamboo unit pre-assembly 200 with more layers is also within the scope of the present invention.
The present embodiment further provides a manufacturing method of the discrete all-bamboo cross laminated timber 100, which is different from the manufacturing method of the discrete all-bamboo cross laminated timber provided in the first embodiment in that: after the step (5), continuously gluing another bamboo unit pre-assembly 200 on the first substrate 5 positioned in the middle; then, continuously gluing another layer of the first base material 5 on the other side of the newly glued bamboo unit pre-assembly 200, so as to obtain a composite bamboo unit; and then, the step (6) in the first embodiment is carried out.
It should be noted that the utility model discloses the full bamboo alternately laminated timber of discrete type still has other various implementation examples, be applied to the interior partition wall of timber structure building wall or other buildings with the structure of embodiment one and embodiment two, can also assist decorative board, gypsum board, OSB board etc. at its surface, also can be at inboard space position filling fire prevention acoustic material, like fire prevention cotton, soundproof cotton etc. these are directed to the utility model discloses the full bamboo alternately laminated timber's of discrete type simple deformation is in within the protection scope of the utility model.
In the description of the present invention, it should be noted that the terms "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. A discrete type all-bamboo cross laminated timber is characterized in that: the bamboo unit pre-assembly structure comprises at least two layers of first base materials arranged at intervals, a bamboo unit pre-assembly is arranged between any two adjacent layers of the first base materials, the bamboo unit pre-assembly comprises a plurality of connecting bamboo materials distributed at intervals, and an adhesive layer is respectively arranged between any one connecting bamboo material and two adjacent first base materials; the first base material is provided with a connecting nail, and the connecting nail penetrates through the first base material and the adhesive layer and is inserted into the connecting bamboo wood.
2. The discrete all-bamboo cross-laminated lumber according to claim 1, wherein: the thickness of the discrete type all-bamboo cross laminated timber is uniform; the first base material is a wood specification material or a bamboo material; the first base material is continuously arranged or discretely arranged at intervals.
3. A discrete all-bamboo cross-laminated lumber according to claim 2, wherein: the diameter of connecting the bamboo timber is by one end to the other end taper gradually, just the thickness of first substrate is followed the direction that the diameter of connecting the bamboo timber diminishes becomes grow gradually, follows promptly the axial of connecting the bamboo timber the diameter of connecting the bamboo timber with the thickness sum of first substrate is the fixed value.
4. The discrete all-bamboo cross-laminated lumber according to claim 1, wherein: only one side of any layer is provided with the first base material connected with the bamboo wood, and the side of the first base material far away from the connected bamboo wood is a plane.
5. The discrete all-bamboo cross-laminated lumber according to claim 1, wherein: the side wall of the connection bamboo wood is provided with two glue joint surfaces which are symmetrically distributed about the axis of the connection bamboo wood, and the two glue joint surfaces are planes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120331853.9U CN214604922U (en) | 2021-02-05 | 2021-02-05 | Discrete type all-bamboo cross laminated timber |
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| CN202120331853.9U CN214604922U (en) | 2021-02-05 | 2021-02-05 | Discrete type all-bamboo cross laminated timber |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792940A (en) * | 2021-02-05 | 2021-05-14 | 西南林业大学 | Discrete type all-bamboo cross laminated timber and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112792940A (en) * | 2021-02-05 | 2021-05-14 | 西南林业大学 | Discrete type all-bamboo cross laminated timber and manufacturing method thereof |
| CN112792940B (en) * | 2021-02-05 | 2024-05-24 | 西南林业大学 | Discrete full-bamboo cross laminated timber and manufacturing method thereof |
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