Lightweight high-strength multipurpose bamboo laminated wood container and manufacturing method thereof

Abstract

The invention relates to a light high-strength multipurpose bamboo laminated wood container and a manufacturing method thereof. The container is mainly composed of bamboo laminated wood corner posts, side posts, longitudinal side beams, bamboo laminated wood or glass fiber-steel transverse short beams, bamboo laminated wood or glass fiber-steel longitudinal middle beams, corner fitting-glass fiber-steel plate-steel sleeve-bolt integrated connection, bamboo laminated wood inclined struts, glass fiber-steel composite barrels for artificial vehicles, bamboo laminated wood and glass fiber-steel composite barrels for artificial vehicles. The system is composed of glass fiber-steel sleeve bolt connection, glass fiber-steel bolt connection, inclined T-shaped glass fiber-steel filling plate bolt connection, welding connection, door-shaped steel plate integrated welding connection, goods inlet and outlet doors, a K-shaped structure system and peripheral plates. The container is light in dead weight, high in strength, safe and reliable in structure, corrosion-resistant, impact-resistant, fatigue-resistant, freezing-resistant and the like, reduces the use of mineral materials such as steel and aluminum alloy, and is low-carbon and environment-friendly.

Description

Technical Field

[0001] The invention relates to a lightweight, high-strength, multi-purpose bamboo composite material container and a manufacturing method thereof, and belongs to the field of cargo transportation. Background Art

[0002] Steel containers are heavy. For example, a typical 20-foot standard steel container weighs approximately 2.3 tons. This heavy weight reduces payload and increases fuel consumption.

[0003] Steel is prone to rust and requires regular maintenance. The steel production process consumes large amounts of resources such as iron ore and coal, while also generating large amounts of pollutants such as carbon dioxide and waste residue.

[0004] If lightweight materials such as aluminum alloy are used, the cost is high and there are certain limitations in terms of strength and impact resistance, which makes it difficult to fully meet the requirements of the complex use environment of containers. Currently, there are no standard bamboo glulam containers on the market.

[0005] High-strength fiber material (FRP) is a new type of material with excellent mechanical properties and good durability. It can be composited with other materials to improve the mechanical properties and durability of the material.

[0006] Bamboo laminated timber is made by processing fast-growing, short-cycle bamboo into strips of fixed width and thickness, or by flattening raw bamboo into wide-format units (removing the green and yellow parts). After treatment (such as carbonization) and drying to a certain moisture content, the strips are then glued together with an adhesive. Bamboo laminated timber can be customized in cross-sectional dimensions and offers numerous advantages, including being environmentally friendly, low-carbon, lightweight, and high-strength, making it suitable for structural applications. Summary of the Invention

[0007] In order to solve the above problems, the present invention proposes a lightweight, high-strength, multi-purpose bamboo glulam container and its manufacturing method, which has the advantages of light weight, high strength, excellent mechanical properties, stable structural system, resource conservation, environmental protection, and easy assembly production and use. This patent develops and protects a container with bamboo glulam as the structural material and its preparation method, the purpose of which is to reduce its own weight, ensure a safe and reliable structure, and be corrosion-resistant, impact-resistant, fatigue-resistant, frost-resistant, and UV-resistant. At the same time, it develops and utilizes biomass material resources, reduces the use of mineral materials such as steel and aluminum alloys, and is more low-carbon and environmentally friendly. In addition, the container developed by this patent is a multifunctional, lightweight, high-strength bamboo glulam container that can adopt a variety of loading and unloading methods and can meet a variety of loading methods.

[0008] The technical solution adopted by the present invention is as follows:

[0009] A lightweight, high-strength, multi-purpose bamboo integrated timber container and a manufacturing method thereof, characterized in that: the lightweight, high-strength, multi-purpose bamboo integrated timber container mainly comprises bamboo integrated timber corner columns (1), bamboo integrated timber side columns (2), bamboo integrated timber longitudinal side beams (3), bamboo integrated timber or glass fiber-steel transverse short beams (4), bamboo integrated timber or glass fiber-steel longitudinal middle beams (5), corner piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6), bamboo integrated timber diagonal bracing (7), glass fiber-steel composite cylinder for forklift (8), glass fiber-steel sleeve bolt connection (9), glass fiber-steel bolt connection (10), oblique T-shaped glass fiber-steel filler plate bolt connection (11), welding connection (12), door-shaped steel plate integrated welding connection (12-1), door (13), "K"-shaped structural system, and peripheral plate material; the manufacturing method specifically comprises the following steps:

[0010] Step 1: Prepare a glass fiber-steel composite component or connector, wherein the angle piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6) is an integrated connector with end holes, side holes, top holes or bottom holes, which can connect beam and column structural members and can also be used for container lifting. The steel sleeve part and the bolt combination are used for column end connection, and the centroid of the steel sleeve and the centroid of the angle piece are on a straight line or the horizontal projection distance between the two centroids is less than one-fifth of the length of the short side of the sleeve. The steel plate is in the shape of a straight line or an I-shape, and is used in combination with the bolts. Beam end connection; Angle piece - glass fiber - steel plate - steel sleeve - bolt integrated connection (6) overcomes the shortcomings of traditional connection methods such as weak strength, poor durability, low connection efficiency, and low load-bearing capacity; "door"-shaped glass fiber - steel short transverse beam (4-1) has "door" shapes at both ends to fix containers or for forklifts to load and unload containers from the cross section; The glass fiber - steel composite cylinder (8) for forklifts has square or circular holes with a spacing of not less than 40 mm and a spacing of not less than 80 mm on both sides, or no holes;

[0011] Step 2: Prepare bamboo glulam beams, columns, braces and plate components, and drill bolt or pin connection holes at the ends of the beams, columns, braces, plates and other connecting parts;

[0012] Step 3: Build the bottom fiberglass-steel-bamboo laminated timber frame structure, which mainly consists of an "eye"-shaped fiberglass-steel-bamboo laminated timber frame, longitudinal middle short beams, and transverse short beams; the "eye"-shaped fiberglass-steel-bamboo laminated timber frame mainly consists of 2 fiberglass-steel composite cylinders (8) for forklifts, bamboo laminated timber longitudinal side beams (3), and 2 fiberglass-steel transverse short beams (4-1); the 2 fiberglass-steel composite cylinders (8) for forklifts are placed in parallel with a spacing ensuring that the forklift forks can be freely inserted for loading and unloading containers; the first longitudinal side beam (3-1), the second longitudinal side beam (3-2), and the third longitudinal side beam (3-3) connect the ends of the 2 fiberglass-steel composite cylinders (8) for forklifts through the fifth fiberglass-steel bolt connection (10-5) and are on a straight line and a plane; the first longitudinal side beam (3-1) and the third longitudinal side beam (3-3) are connected to the "gate"-shaped fiberglass-steel transverse short beam (4-1) by the second angle piece-fiberglass-steel plate-steel sleeve-bolt integrated connection (6-2) to form the outer frame of the "square"-shaped bottom frame; the fifth bamboo laminated timber transverse short beam (4-5) is arranged transversely inside the outer frame of the "square"-shaped bottom frame at a spacing not exceeding 1.5 meters, and the bamboo laminated timber or fiberglass-steel longitudinal middle beams (5) are arranged longitudinally in an equally divided form, and the fifth bamboo laminated timber transverse short beam (4-5) and the fiberglass-steel composite cylinder (8) for forklifts are connected;

[0013] Step 4: Assemble the four surrounding column components; connect the first bamboo laminated wood corner column (1-1) of the door frame span and the second bamboo laminated wood corner column (1-2) of the non-door frame span to the bottom glass fiber-steel-bamboo laminated wood frame structure through the second angle piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6-2), and ensure that the column centroid and the corner piece centroid are in a straight line or the horizontal projection distance between the two centroids is less than one-fifth of the length of the short side of the column; connect the first bamboo laminated wood side column (2-1), the second bamboo laminated wood side column (2-2), the third bamboo laminated wood side column (2-3), the fourth bamboo laminated wood side column (2 -4), the fifth bamboo laminated wood side column (2-5) is connected to the bottom glass fiber-steel-bamboo laminated wood cabinet frame structure through the second glass fiber-steel bolt connection (10-2); the first bamboo laminated wood corner column (1-1) and the first bamboo laminated wood side column (2-1) are connected to the first longitudinal side beam (3-1) in an inverted "eight" shape by two bamboo laminated wood diagonal braces (7); the second bamboo laminated wood corner column (1-2) and the fourth bamboo laminated wood side column (2-4) are connected to the third longitudinal side beam (3-3) in an inverted "eight" shape by two bamboo laminated wood diagonal braces (7); The bamboo laminated wood diagonal brace (7) connects the second bamboo laminated wood side column (2-2), the third bamboo laminated wood side column (2-3) and the second longitudinal side beam (3-2) in an inverted "eight" shape. If a side door is made, the bamboo laminated wood diagonal brace (7) can be removed. The inverted "eight" shape can reduce the slenderness ratio of the column, avoid the instability and damage of the column, and enhance the stability of the overall structure. The "K"-shaped structural system composed of two bamboo laminated wood diagonal braces (7) and the fifth longitudinal side beam (3-5) is arranged just above the end of each forklift glass fiber-steel composite cylinder (8) and is close to the forklift glass fiber-steel composite cylinder (8). The steel composite tube (8) and the bamboo laminated wood longitudinal side beam (3), and the fifth longitudinal side beam (3-5) are connected to the bamboo laminated wood longitudinal side beam (3) at both ends through a "T"-shaped or "I"-shaped fourth glass fiber-steel bolt connection (10-4); the "K"-shaped structural system is mainly used to prevent the glass fiber-steel composite tube (8) for forklift from being tilted or separated from the bamboo structural system, and can also reduce the slenderness ratio of the column, avoid the instability and damage of the column, and enhance the overall stability of the structure; the bamboo laminated wood diagonal brace (7) is connected to the beam and column at both ends through an oblique T-shaped glass fiber-steel filler plate bolt connection (11);

[0014] Step 5: Assemble the top bamboo integrated timber frame structure, connect the second bamboo integrated timber transverse short beam (4-2), the fourth longitudinal side beam (3-4) and the top of the first bamboo integrated timber corner column (1-1) through the first angle piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6-1), connect the third bamboo integrated timber transverse short beam (4-3), the fourth longitudinal side beam (3-4) and the top of the second bamboo integrated timber corner column (1-2) through the first angle piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6-1), and ensure that the column centroid and the corner piece centroid are on a straight line or the horizontal projection distance between the two centroids is less than one-fifth of the length of the short side of the column; connect the fourth longitudinal side beam (3-4), the third bamboo integrated timber transverse short beam (4-3) and the top of the bamboo integrated timber side column (2) through the second glass fiber-steel bolt connection (10-2); use bamboo integrated timber diagonal bracing (7) connecting the two ends of the fourth longitudinal side beam (3-4) with the first bamboo integrated timber corner column (1-1), the second bamboo integrated timber corner column (1-2), the second bamboo integrated timber transverse short beam (4-2) and the third bamboo integrated timber transverse short beam (4-3) in the form of a triangular structure system through an oblique T-shaped glass fiber-steel filler plate bolt connection (11). The triangular structure system can reduce the slenderness ratio of the component, avoid the instability and damage of the component, and enhance the overall stability of the structure; using bamboo integrated timber diagonal braces (7) to connect the two ends of the third bamboo integrated timber transverse short beam (4-3) with the second bamboo integrated timber corner column (1-2) in the form of a triangular structure system through an oblique T-shaped glass fiber-steel filler plate bolt connection (11); using the fourth bamboo integrated timber transverse short beam (4-4) to connect the two fourth longitudinal side beams (3-4) through the first glass fiber-steel bolt connection (10-1);

[0015] Step 6: Assemble the maintenance structure, install the bottom bamboo laminated wood board (14) on the bottom glass fiber-steel-bamboo laminated wood frame structure; install the end door (13-1) between the first bamboo laminated wood corner column (1-1), and install the side door (13-2) between the second bamboo laminated wood side column (2-2) and the third bamboo laminated wood side column (2-3); fix the top bamboo laminated wood board (15), the first side bamboo laminated wood board (16), and the second side bamboo laminated wood board (17) to the periphery of the bamboo laminated wood frame structure to form an enclosure structure; and perform anti-corrosion, anti-mildew and anti-ultraviolet treatment on the bamboo laminated wood.

[0016] The lightweight, high-strength, multi-purpose bamboo integrated material container and its manufacturing method are characterized in that the bamboo integrated material can also be a composite of one or more of bamboo integrated material, bamboo reconstructed material, bamboo woven glued material, bamboo plastic composite material, bamboo shavings composite material, bamboo chip profile, engineered wood, ordinary wood, and straw.

[0017] The lightweight, high-strength, multi-purpose bamboo composite material container and its manufacturing method are characterized in that the glass fiber can be a composite of one or more of glass fiber, basalt fiber, carbon fiber, and aramid fiber; if a long service life is not required, it can be omitted.

[0018] The lightweight, high-strength, multi-purpose bamboo integrated timber container and its manufacturing method are characterized in that the door can be made of metal or a composite of one or more of bamboo integrated timber, bamboo reconstructed timber, bamboo woven plywood, wood, FRP, and straw.

[0019] The lightweight, high-strength, multi-purpose bamboo integrated timber container and its manufacturing method are characterized in that the bottom bamboo integrated timber longitudinal side beams (3) are made of bamboo integrated timber, steel, FRP profiles, wood, or two or more composite materials selected from bamboo, steel, FRP profiles, and wood.

[0020] The lightweight, high-strength, multi-purpose bamboo integrated timber container and its manufacturing method are characterized in that the two bamboo integrated timber diagonal braces (7) and the fifth longitudinal side beam (3-5) form a "K"-shaped structural system, which can be arranged or not according to the material characteristics of the bottom longitudinal side beam.

[0021] The lightweight, high-strength, multi-purpose bamboo composite material container and its manufacturing method are characterized in that the cargo entry and exit doors are arranged as needed and can be set at one, two or three positions of the top, side or end surface.

[0022] The lightweight, high-strength, multi-purpose bamboo integrated timber container and the manufacturing method thereof are characterized in that the lightweight, high-strength, multi-purpose bamboo integrated timber container can also be used as a house.

[0023] The lightweight, high-strength, multi-purpose bamboo integrated timber container and its manufacturing method are characterized in that the number and arrangement method of the bamboo integrated timber diagonal braces (7) can be increased or decreased according to weight allowance and usage conditions.

[0024] The lightweight, high-strength, multi-purpose bamboo integrated timber container and its manufacturing method are characterized in that the anti-corrosion, mildew-proof and ultraviolet-proof treatment can adopt the following steps to treat the surface of the bamboo integrated timber with a silicone-polyurethane composite super-hydrophobic coating. The coating is formed by hybridizing polydimethylsiloxane (PDMS)-modified polyurethane (PU) and nano-silicon dioxide (SiO2). Through the synergistic effect of the micro-nano graded rough structure and the low surface energy siloxy groups, a super-hydrophobic interface with a static water contact angle (WCA) ≥150° and a sliding angle (SA) ≤10° is formed. At the same time, resorcinol-formaldehyde resin (RF) is embedded to fill microporous defects, thereby inhibiting the attachment of microorganisms and the penetration of corrosive media.

[0025] A high-performance protective coating is constructed on the surface of bamboo composite materials using a spray coating process. The coating is based on organosilicon-modified polyurethane (PDMS-PU) and is modified by adding nano-silica (SiO2) modified with a silane coupling agent (such as KH-570) and resorcinol-formaldehyde resin (RF) to form a composite coating with unique properties. The coating performance is optimized by precisely controlling the proportions of each component. The polydimethylsiloxane (PDMS) and polyurethane (PU) in PDMS-PU are regulated according to the soft segment grafting ratio, and modified SiO2 nanoparticles (content 5%-10%) and RF resin are mixed in a mass ratio of 8:1:1 to ensure the multifunctional performance of the coating. The appropriate amount of modified SiO2 is added to enhance the micro-nano hierarchical rough structure of the coating; the RF resin is embedded in the coating to fill microporous defects and form a chemical barrier. The coating has excellent comprehensive properties: excellent super-hydrophobicity, strong mechanical durability, good chemical stability, mildew and antibacterial ability, strong environmental adaptability, and can effectively deal with the corrosion, mildew and biological adhesion problems of containers in humid, salt spray and biological pollution environments. The silicone-polyurethane composite super-hydrophobic coating has super-hydrophobic, anti-corrosion, anti-mildew, anti-ultraviolet and other properties, as well as anti-biological adhesion and self-cleaning functions.

[0026] The beneficial effects of the present invention are as follows: the container developed by this patent, which uses bamboo glulam as structural material, has a light weight, high strength, a safe and reliable structure, and is resistant to corrosion, impact, fatigue, and frost. It reduces the use of mineral materials such as steel and aluminum alloys, and is more low-carbon and environmentally friendly. The container developed by this patent can be loaded and unloaded by hoisting or by forklift. The container developed by this patent has both side doors and top swing doors, which has high loading efficiency and can meet the loading and unloading needs of different goods. Compared with metal containers, the container of the same size developed by this patent can reduce its own weight by more than 20%; the bamboo glulam frame container can be used for 8-10 years without large-scale anti-corrosion treatment, and the maintenance cost can be reduced by more than 50%. At the same time, bamboo can absorb a large amount of carbon dioxide during its growth process, and its carbon emissions during processing are also relatively low, which helps to achieve the low-carbon and environmental protection goals of the container industry.

[0027] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A lightweight, high-strength, multi-purpose bamboo composite material container according to Example 1 of the present invention;

[0029] Figure 2 A lightweight, high-strength, multi-purpose bamboo composite material container according to Example 2 of the present invention;

[0030] Figure 3A lightweight, high-strength, multi-purpose bamboo composite material container according to Example 3 of the present invention;

[0031] Figure 4 A lightweight, high-strength, multi-purpose bamboo glulam container structure according to embodiments 1-3 of the present invention;

[0032] Figure 5 A lightweight, high-strength, multi-purpose bamboo glulam container structure according to embodiments 1-3 of the present invention;

[0033] Figure 6 The "K"-shaped structural system of Examples 1-3 of the present invention;

[0034] Figure 7 This is a schematic diagram of the integrated connection of the first corner piece, fiberglass, steel plate, steel sleeve and bolts according to the present invention;

[0035] Figure 8 This is a schematic diagram of the integrated connection of the second corner piece, fiberglass, steel plate, steel sleeve, and bolts according to the present invention;

[0036] Figure 9 This is a schematic diagram of the oblique T-shaped glass fiber-steel filler plate bolt connection of the present invention;

[0037] Figure 10 This is a schematic diagram of a fourth glass fiber-steel bolt connection according to the present invention;

[0038] Figure 1: 1 is a bamboo laminated timber corner column, 1-1 is a first bamboo laminated timber corner column, 1-2 is a second bamboo laminated timber corner column; 2 is a bamboo laminated timber side column, 2-1 is a first bamboo laminated timber side column, 2-2 is a second bamboo laminated timber side column, 2-3 is a third bamboo laminated timber side column, 2-4 is a fourth bamboo laminated timber side column, 2-5 is a fifth bamboo laminated timber side column (2-5); 3 is a bamboo laminated timber longitudinal side beam, 3-1 is a first longitudinal side beam, 3-2 is a second longitudinal side beam, 3-3 is a third longitudinal side beam, 3-4 is a fourth longitudinal side beam, 3-5 is a fifth longitudinal side beam; 4 is a bamboo laminated timber or Fiberglass-steel transverse short beam, 4-1 is a fiberglass-steel transverse short beam, 4-2 is the second bamboo glulam transverse short beam, 4-3 is the third bamboo glulam transverse short beam, 4-4 is the fourth bamboo glulam transverse short beam, 4-5 is the fifth bamboo glulam transverse short beam; 5 is a bamboo glulam or fiberglass-steel longitudinal middle beam, 5-1 is the first bamboo glulam or fiberglass-steel longitudinal middle beam, 5-2 is the second bamboo glulam or fiberglass-steel longitudinal middle beam, 5-3 is the third bamboo glulam or fiberglass-steel longitudinal middle beam; 6 is an angle piece - fiberglass - steel plate - steel sleeve - Bolt integrated connection, 6-1 is the first angle piece - glass fiber - steel plate - steel sleeve - bolt integrated connection, 6-2 is the second angle piece - glass fiber - steel plate - steel sleeve - bolt integrated connection; 7 is the bamboo composite material diagonal brace; 8 is the glass fiber - steel composite cylinder for forklifts; 9 is the glass fiber - steel sleeve bolt connection, 9-1 is the glass fiber - steel sleeve bolt connection at the top of the column, 9-2 is the glass fiber - steel sleeve bolt connection at the bottom of the column; 10 is the glass fiber - steel bolt connection, 10-1 is the first glass fiber - steel bolt connection, 10-2 is the second glass fiber - steel bolt connection , 10-3 is the third glass fiber-steel bolt connection, 10-4 is the fourth glass fiber-steel bolt connection, 10-5 is the fifth glass fiber-steel bolt connection; 11 is the oblique T-shaped glass fiber-steel filler plate bolt connection; 12 is the welding connection, 12-1 is the door-shaped steel plate integrated welding connection, 12-2 is the second welding connection; 13 is the door, 13-1 is the end door, 13-2 is the side door, 13-3 is the top door; 14 is the bottom bamboo integrated wood board; 15 is the top bamboo integrated wood board; 16 is the first side bamboo integrated wood board; 17 is the second side bamboo integrated wood board. DETAILED DESCRIPTION

[0039] Example 1

[0040] A lightweight, high-strength, multi-purpose bamboo integrated timber container and a manufacturing method thereof, characterized in that: the lightweight, high-strength, multi-purpose bamboo integrated timber container mainly comprises bamboo integrated timber corner columns (1), bamboo integrated timber side columns (2), bamboo integrated timber longitudinal side beams (3), bamboo integrated timber or glass fiber-steel transverse short beams (4), bamboo integrated timber or glass fiber-steel longitudinal middle beams (5), corner piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6), bamboo integrated timber diagonal bracing (7), glass fiber-steel composite cylinder for forklift (8), glass fiber-steel sleeve bolt connection (9), glass fiber-steel bolt connection (10), oblique T-shaped glass fiber-steel filler plate bolt connection (11), welding connection (12), door-shaped steel plate integrated welding connection (12-1), door (13), "K"-shaped structural system, and peripheral plate; the door (13) comprises end door (13-1) and side door (13-2), and the manufacturing method thereof specifically comprises the following steps:

[0041] Step 1: Prepare a glass fiber-steel composite component or connector, wherein the corner piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6) is an integrated connector with end holes, side holes, top holes or bottom holes, which can connect beam and column structural members and can also be used for lifting containers at the same time. The steel sleeve part and the bolt combination are used for column end connection, and the centroid of the steel sleeve and the centroid of the corner piece are on a straight line or the horizontal projection distance between the two centroids is less than one-fifth of the length of the short side of the sleeve. The steel plate is I-shaped or I-shaped and is used for beam end connection in combination with the bolt; the "door" shaped glass fiber-steel transverse short beam (4-1) has "door" shapes at both ends to fix the container or for forklifts to load and unload the container from the cross section; the glass fiber-steel composite tube (8) for forklifts has square or circular holes with a spacing width of not less than 40 mm and a spacing of not less than 80 mm on both sides, or no holes are opened;

[0042] Step 2: Prepare bamboo glulam beams, columns, braces and plate components, and drill bolt or pin connection holes at the ends of the beams, columns, braces, plates and other connecting parts;

[0043] Step 3: Build the bottom fiberglass-steel-bamboo laminated timber frame structure, which mainly consists of a "mu" - shaped fiberglass-steel-bamboo laminated timber frame, longitudinal middle short beams, and transverse short beams; the "mu" - shaped fiberglass-steel-bamboo laminated timber frame mainly consists of 2 fiberglass-steel composite cylinders for forklifts (8), bamboo laminated timber longitudinal side beams (3), and 2 fiberglass-steel transverse short beams (4-1); the 2 fiberglass-steel composite cylinders for forklifts (8) are placed in parallel, with a spacing ensuring that the forklift forks can be freely inserted for loading and unloading containers; the first longitudinal side beam (3-1), the second longitudinal side beam (3-2), and the third longitudinal side beam (3-3) connect the ends of the 2 fiberglass-steel composite cylinders for forklifts (8) through the fifth fiberglass-steel bolt connection (10-5) and are on the same straight line and plane; the first longitudinal side beam (3-1) and the third longitudinal side beam (3-3) are connected to the "gate" - shaped fiberglass-steel transverse short beam (4-1) using the second angle piece-fiberglass-steel plate-steel sleeve-bolt integrated connection (6-2) to form the outer frame of the "kou" - shaped bottom frame; the fifth bamboo laminated timber transverse short beam (4-5) is arranged transversely inside the "kou" - shaped bottom frame outer frame at a spacing not exceeding 1.5 meters, and the bamboo laminated timber or fiberglass-steel longitudinal middle beams (5) are arranged longitudinally in an equally divided form, and the fifth bamboo laminated timber transverse short beam (4-5) and the fiberglass-steel composite cylinders for forklifts (8) are connected;

[0044] Step 4: Assemble the surrounding column components; connect the first bamboo laminated wood corner column (1-1) of the door frame span and the second bamboo laminated wood corner column (1-2) of the non-door frame span to the bottom glass fiber-steel-bamboo laminated wood frame structure through the second corner piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6-2), and ensure that the column centroid and the corner piece centroid are in a straight line or the horizontal projection distance between the two centroids is less than one-fifth of the length of the short side of the column; connect the first bamboo laminated wood side column (2-1) and the second bamboo laminated wood side column ( 2-2), the third bamboo laminated wood side column (2-3), the fourth bamboo laminated wood side column (2-4), and the fifth bamboo laminated wood side column (2-5) are connected to the bottom glass fiber-steel-bamboo laminated wood frame structure through the second glass fiber-steel bolt connection (10-2); the first bamboo laminated wood corner column (1-1), the first bamboo laminated wood side column (2-1) and the first longitudinal side beam (3-1) are connected in an inverted "eight" shape by two bamboo laminated wood diagonal braces (7), and the first bamboo laminated wood corner column (1-1) and the first bamboo laminated wood side column (2-1) are connected to the first longitudinal side beam (3-1) by two bamboo laminated wood diagonal braces (7 ) connect the second bamboo laminated wood corner column (1-2), the fourth bamboo laminated wood side column (2-4) and the third longitudinal side beam (3-3) in an inverted "eight" shape; use two bamboo laminated wood diagonal braces (7) to connect the second bamboo laminated wood side column (2-2), the third bamboo laminated wood side column (2-3) and the second longitudinal side beam (3-2) in an inverted "eight" shape. If a side-opening door is to be made, the bamboo laminated wood diagonal brace (7) can be removed; use two bamboo laminated wood diagonal braces (7) and the fifth longitudinal side beam (3-5) to form The "K"-shaped structural system is arranged just above the end of each forklift glass fiber-steel composite cylinder (8) and is close to the forklift glass fiber-steel composite cylinder (8) and the bamboo laminated wood longitudinal side beam (3). The two ends of the fifth longitudinal side beam (3-5) are connected to the bamboo laminated wood longitudinal side beam (3) through a "T"-shaped or "I"-shaped fourth glass fiber-steel bolt connection (10-4); the two ends of the bamboo laminated wood diagonal brace (7) are connected to the beam and column through an oblique T-shaped glass fiber-steel filler plate bolt connection (11);

[0045] Step 5: Assemble the top bamboo integrated timber frame structure, connect the second bamboo integrated timber transverse short beam (4-2), the fourth longitudinal side beam (3-4) and the top of the first bamboo integrated timber corner column (1-1) through the first angle piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6-1), connect the third bamboo integrated timber transverse short beam (4-3), the fourth longitudinal side beam (3-4) and the top of the second bamboo integrated timber corner column (1-2) through the first angle piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6-1), and ensure that the column centroid and the corner piece centroid are in a straight line or the horizontal projection distance between the two centroids is less than one-fifth of the length of the short side of the column; connect the fourth longitudinal side beam (3-4), the third bamboo integrated timber transverse short beam (4-3) and the top of the bamboo integrated timber side column (2) through the second glass fiber-steel bolt. The bamboo laminated timber diagonal brace (7) is used to connect the two ends of the fourth longitudinal side beam (3-4) with the first bamboo laminated timber corner column (1-1), the second bamboo laminated timber corner column (1-2), the second bamboo laminated timber transverse short beam (4-2) and the third bamboo laminated timber transverse short beam (4-3) in the form of a triangular structural system through an oblique T-shaped glass fiber-steel filler plate bolt connection (11); the bamboo laminated timber diagonal brace (7) is used to connect the two ends of the third bamboo laminated timber transverse short beam (4-3) with the second bamboo laminated timber corner column (1-2) in the form of a triangular structural system through an oblique T-shaped glass fiber-steel filler plate bolt connection (11); the fourth bamboo laminated timber transverse short beam (4-4) is used to connect the two fourth longitudinal side beams (3-4) through the first glass fiber-steel bolt connection (10-1);

[0046] Step 6: Assemble the maintenance structure, install the bottom bamboo laminated wood board (14) on the bottom glass fiber-steel-bamboo laminated wood frame structure; install the end door (13-1) between the first bamboo laminated wood corner column (1-1), and install the side door (13-2) between the second bamboo laminated wood side column (2-2) and the third bamboo laminated wood side column (2-3); fix the top bamboo laminated wood board (15), the first side bamboo laminated wood board (16), and the second side bamboo laminated wood board (17) to the periphery of the bamboo laminated wood frame structure to form an enclosure structure; and perform anti-corrosion, anti-mildew and anti-ultraviolet treatment on the bamboo laminated wood.

[0047] The lightweight, high-strength, multi-purpose bamboo integrated material container and its manufacturing method are characterized in that the bamboo integrated material can also be a composite of one or more of bamboo integrated material, bamboo reconstructed material, bamboo woven glued material, bamboo plastic composite material, bamboo shavings composite material, bamboo chip profile, engineered wood, ordinary wood, and straw.

[0048] The lightweight, high-strength, multi-purpose bamboo composite material container and its manufacturing method are characterized in that the glass fiber can be a composite of one or more of glass fiber, basalt fiber, carbon fiber, and aramid fiber; if a long service life is not required, it can be omitted.

[0049] The lightweight, high-strength, multi-purpose bamboo integrated timber container and its manufacturing method are characterized in that the cargo entry and exit doors can be made of metal, or a composite of one or more of bamboo integrated timber, bamboo reconstructed timber, bamboo woven plywood, wood, FRP, and straw.

[0050] The lightweight, high-strength, multi-purpose bamboo integrated timber container and its manufacturing method are characterized in that the bottom bamboo integrated timber longitudinal side beams (3) are made of bamboo integrated timber, steel, FRP profiles, wood, or two or more composite materials selected from bamboo, steel, FRP profiles, and wood.

[0051] The lightweight, high-strength, multi-purpose bamboo integrated material container and its manufacturing method are characterized in that the two bamboo integrated material diagonal braces (7) and the fifth longitudinal side beam (3-5) form a "K"-shaped structural system, which can be arranged or not according to the material characteristics of the bottom longitudinal side beam, such as Figure 4 or Figure 5 .

[0052] The lightweight, high-strength, multi-purpose bamboo composite material container and its manufacturing method are characterized in that the cargo entry and exit doors are arranged as needed and can be set at one, two or three positions of the top, side or end surface.

[0053] The lightweight, high-strength, multi-purpose bamboo integrated timber container and the manufacturing method thereof are characterized in that the lightweight, high-strength, multi-purpose bamboo integrated timber container can also be used as a house.

[0054] The lightweight, high-strength, multi-purpose bamboo integrated timber container and its manufacturing method are characterized in that the number and arrangement method of the bamboo integrated timber diagonal braces (7) can be increased or decreased according to weight allowance and usage conditions.

[0055] The lightweight, high-strength, multi-purpose bamboo integrated timber container and its manufacturing method are characterized in that the anti-corrosion, mildew-proof and ultraviolet-proof treatment can adopt the following steps to treat the surface of the bamboo integrated timber with a silicone-polyurethane composite super-hydrophobic coating. The coating is formed by hybridizing polydimethylsiloxane (PDMS)-modified polyurethane (PU) and nano-silicon dioxide (SiO2). Through the synergistic effect of the micro-nano graded rough structure and the low surface energy siloxy groups, a super-hydrophobic interface with a static water contact angle (WCA) ≥150° and a sliding angle (SA) ≤10° is formed. At the same time, resorcinol-formaldehyde resin (RF) is embedded to fill microporous defects, thereby inhibiting the attachment of microorganisms and the penetration of corrosive media.

[0056] A high-performance protective coating, namely a silicone-polyurethane composite super-hydrophobic coating, is constructed on the surface of bamboo composite materials using a spraying process. Strictly according to the formula, the main raw materials such as polydimethylsiloxane modified polyurethane (PDMS-PU) prepolymer, KH-570 modified nano-silica (SiO2) particles, resorcinol-formaldehyde resin (RF), and ethyl acetate solvent are accurately weighed. Before painting, use sandpaper to lightly grind the surface of the bamboo composite material along the bamboo grain direction to remove burrs and grease, and then wipe it clean with ethanol to ensure that the surface roughness Ra = 1.5-2.0μm, the cleanliness ≥ 95% and it is completely dry to provide an ideal base for coating adhesion. Use an F2 type spray gun for spraying. Before spraying, adjust the spray gun pressure to 0.5MPa, keep the distance between the nozzle and the bamboo composite material 15cm, and spray evenly twice, with a wet film thickness of about 50μm each time. After spraying, the coating is dried at room temperature (25°C ± 2°C) for 24 hours and then cured in a 60°C oven for 2 hours to form a super-hydrophobic coating with a total thickness of 80-100μm. After the coating has dried and cured, comprehensive performance testing is conducted for various properties, such as super-hydrophobicity, corrosion resistance, and mildew resistance. If performance does not meet the requirements, factors such as raw material ratio, spray pressure, and curing conditions are promptly analyzed and the process adjusted.

[0057] The organic silicon-polyurethane composite super-hydrophobic coating has the characteristics of super-hydrophobicity, corrosion resistance, mildew resistance, etc., and can realize the functions of anti-biological attachment and self-cleaning.

[0058] Example 2

[0059] The main difference between Example 2 and Example 1 is that there is only an end door (13-1).

[0060] Example 3

[0061] The main difference between Example 3 and Example 1 is that there are end doors (13-1), side doors (13-2) and top doors (13-3) at the same time.

[0062] The above embodiments are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent transformations, improvements, etc. made based on the concept of the present invention without departing from the essence of the technical solution of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lightweight, high-strength, multi-purpose bamboo laminated timber container and its manufacturing method, characterized by: The lightweight, high-strength, multi-purpose bamboo laminated timber container mainly comprises bamboo laminated timber corner columns (1), bamboo laminated timber side columns (2), bamboo laminated timber longitudinal side beams (3), bamboo laminated timber or glass fiber-steel transverse short beams (4), bamboo laminated timber or glass fiber-steel longitudinal middle beams (5), corner piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6), bamboo laminated timber diagonal bracing (7), forklift glass fiber-steel composite cylinder (8), glass fiber-steel sleeve bolt connection (9), glass fiber-steel bolt connection (10), oblique T-shaped glass fiber-steel filler plate bolt connection (11), welding connection (12), door-shaped steel plate integrated welding connection (12-1), door (13), "K"-shaped structural system, and peripheral plate. The manufacturing method thereof specifically comprises the following steps: Step 1: Prepare a glass fiber-steel composite component or connector, wherein the corner piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6) is an integrated connector with end holes, side holes, top holes or bottom holes, which can connect beam and column structural members and can also be used for lifting containers at the same time. The steel sleeve part and the bolt combination are used for column end connection, and the centroid of the steel sleeve and the centroid of the corner piece are on a straight line or the horizontal projection distance between the two centroids is less than one-fifth of the length of the short side of the sleeve. The steel plate is I-shaped or I-shaped and is used for beam end connection in combination with the bolt; the "door" shaped glass fiber-steel transverse short beam (4-1) has "door" shapes at both ends to fix the container or for forklifts to load and unload the container from the cross section; the glass fiber-steel composite tube (8) for forklifts has square or circular holes with a spacing width of not less than 40 mm and a spacing of not less than 80 mm on both sides, or no holes are opened; Step 2: Prepare bamboo glulam beams, columns, braces and plate components, and drill bolt or pin connection holes at the ends of the beams, columns, braces, plates and other connecting parts; Step 3: Build the bottom fiberglass-steel-bamboo laminated timber frame structure, which mainly consists of an "eye"-shaped fiberglass-steel-bamboo laminated timber frame, longitudinal middle short beams, and transverse short beams; the "eye"-shaped fiberglass-steel-bamboo laminated timber frame mainly consists of 2 forklift fiberglass-steel composite cylinders (8), bamboo laminated timber longitudinal side beams (3), and 2 fiberglass-steel transverse short beams (4-1); the 2 forklift fiberglass-steel composite cylinders (8) are placed in parallel with a spacing that ensures the forklift forks can be freely inserted for loading and unloading containers; the first longitudinal side beam (3-1), the second longitudinal side beam (3-2), and the third longitudinal side beam (3-3) connect the ends of the 2 forklift fiberglass-steel composite cylinders (8) through the fifth fiberglass-steel bolt connection (10-5) and are on the same straight line and plane; the first longitudinal side beam (3-1) and the third longitudinal side beam (3-3) are connected to the "door"-shaped fiberglass-steel transverse short beam (4-1) by the second angle piece-fiberglass-steel plate-steel sleeve-bolt integrated connection (6-2) to form the outer frame of the "square"-shaped bottom frame; along the transverse direction inside the outer frame of the "square"-shaped bottom frame, the fourth bamboo laminated timber transverse short beam (4-5) is arranged at a spacing not exceeding 1.5 meters, and along the longitudinal direction, bamboo laminated timber or fiberglass-steel longitudinal middle beams (5) are arranged in an equally divided form, and the fourth bamboo laminated timber transverse short beam (4-5) is connected to the forklift fiberglass-steel composite cylinder (8). Step 4: Assemble the surrounding column components; connect the first bamboo laminated wood corner column (1-1) of the door frame span and the second bamboo laminated wood corner column (1-2) of the non-door frame span to the bottom glass fiber-steel-bamboo laminated wood frame structure through the second corner piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6-2), and ensure that the column centroid and the corner piece centroid are in a straight line or the horizontal projection distance between the two centroids is less than one-fifth of the length of the short side of the column; connect the first bamboo laminated wood side column (2-1) and the second bamboo laminated wood side column ( 2-2), the third bamboo laminated wood side column (2-3), the fourth bamboo laminated wood side column (2-4), and the fifth bamboo laminated wood side column (2-5) are connected to the bottom glass fiber-steel-bamboo laminated wood frame structure through the second glass fiber-steel bolt connection (10-2); the first bamboo laminated wood corner column (1-1), the first bamboo laminated wood side column (2-1) and the first longitudinal side beam (3-1) are connected in an inverted "eight" shape by two bamboo laminated wood diagonal braces (7), and the first bamboo laminated wood corner column (1-1) and the first bamboo laminated wood side column (2-1) are connected to the first longitudinal side beam (3-1) by two bamboo laminated wood diagonal braces ( 7) connecting the second bamboo laminated wood corner column (1-2) and the fourth bamboo laminated wood side column (2-4) with the third longitudinal side beam (3-3) in an inverted "eight" shape; connecting the second bamboo laminated wood side column (2-2) and the third bamboo laminated wood side column (2-3) with the second longitudinal side beam (3-2) in an inverted "eight" shape by two bamboo laminated wood diagonal braces (7). If a side-opening door is to be made, the bamboo laminated wood diagonal brace (7) can be removed; using two bamboo laminated wood diagonal braces (7) and the fifth longitudinal side beam (3-5 ) form a "K"-shaped structure and are arranged just above the end of each forklift glass fiber-steel composite cylinder (8), and are close to the forklift glass fiber-steel composite cylinder (8) and the bamboo laminated wood longitudinal side beam (3); both ends of the fifth longitudinal side beam (3-5) are connected to the bamboo laminated wood longitudinal side beam (3) through a "T"-shaped or "I"-shaped fourth glass fiber-steel bolt connection (10-4); both ends of the bamboo laminated wood diagonal brace (7) are connected to the beam and column through an oblique T-shaped glass fiber-steel filler plate bolt connection (11); Step 5: Assemble the top bamboo integrated timber frame structure, connect the second bamboo integrated timber transverse short beam (4-2), the fourth longitudinal side beam (3-4) and the top of the first bamboo integrated timber corner column (1-1) through the first angle piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6-1), connect the third bamboo integrated timber transverse short beam (4-3), the fourth longitudinal side beam (3-4) and the top of the second bamboo integrated timber corner column (1-2) through the first angle piece-glass fiber-steel plate-steel sleeve-bolt integrated connection (6-1), and ensure that the column centroid and the corner piece centroid are in a straight line or the horizontal projection distance between the two centroids is less than one-fifth of the length of the short side of the column; connect the fourth longitudinal side beam (3-4), ... third bamboo integrated timber transverse short beam (4-3) and the fourth longitudinal side beam (3-4) -3) is connected to the top of the bamboo laminated wood side column (2) through a second glass fiber-steel bolt connection (10-2); the bamboo laminated wood diagonal brace (7) is used to connect the two ends of the fourth longitudinal side beam (3-4) to the first bamboo laminated wood corner column (1-1), the second bamboo laminated wood corner column (1-2), the second bamboo laminated wood transverse short beam (4-2) and the third bamboo laminated wood transverse short beam (4-3) in the form of a triangular structural system through an oblique T-shaped glass fiber-steel filler plate bolt connection (11); the bamboo laminated wood diagonal brace (7) is used to connect the two ends of the third bamboo laminated wood transverse short beam (4-3) to the second bamboo laminated wood corner column (1-2) in the form of a triangular structural system through an oblique T-shaped glass fiber-steel filler plate bolt connection (11); Step 6: Assemble the maintenance structure, install the bamboo laminated wood board (14) on the bottom glass fiber-steel-bamboo laminated wood frame structure; install the end-facing door (13-1) between the first bamboo laminated wood corner column (1-1), and install the side door (13-2) between the second bamboo laminated wood side column (2-2) and the third bamboo laminated wood side column (2-3); fix the top bamboo laminated wood board (15), the first side bamboo laminated wood board (16), and the second side bamboo laminated wood board (17) to the periphery of the bamboo laminated wood frame structure to form an enclosure structure; and perform anti-corrosion, anti-mildew and anti-ultraviolet treatment on the bamboo laminated wood.

2. A lightweight, high-strength, multi-purpose bamboo laminated timber container and its manufacturing method according to claim 1, characterized in that: The bamboo integrated material can also be a composite of one or more of bamboo integrated material, bamboo reconstituted material, bamboo woven glued material, bamboo plastic composite material, bamboo shavings composite material, bamboo chip profile, engineered wood, ordinary wood, and straw.

3. The lightweight, high-strength, multi-purpose bamboo laminated timber container and its manufacturing method according to claim 1, characterized in that: The glass fiber can be a composite of one or more of glass fiber, basalt fiber, carbon fiber, and aramid fiber; if a long service life is not required, it can also be omitted.

4. The lightweight, high-strength, multi-purpose bamboo laminated timber container and its manufacturing method according to claim 1, characterized in that: The door can be made of metal, or a composite of one or more of bamboo integrated materials, bamboo recombinant materials, bamboo plywood, wood, FRP, and straw.

5. The lightweight, high-strength, multi-purpose bamboo laminated timber container and its manufacturing method according to claim 1, characterized in that: The bottom bamboo glulam longitudinal side beam (3) is made of bamboo glulam, steel, FRP profile, wood, or two or more composite materials of bamboo, steel, FRP profile and wood.

6. The lightweight, high-strength, multi-purpose bamboo laminated timber container and its manufacturing method according to claim 1, characterized in that: The two bamboo composite material diagonal braces (7) and the fifth longitudinal side beam (3-5) form a "K"-shaped structural system, which can be arranged or not according to the material characteristics of the bottom longitudinal side beam.

7. The lightweight, high-strength, multi-purpose bamboo laminated timber container and its manufacturing method according to claim 1, characterized in that: The cargo entry and exit door is arranged as required and can be set at one, two or three positions of the top, side or end surface.

8. The lightweight, high-strength, multi-purpose bamboo laminated timber container and its manufacturing method according to claim 1, characterized in that: The lightweight, high-strength, multi-purpose bamboo integrated timber container can also be used as a house.

9. The lightweight, high-strength, multi-purpose bamboo laminated timber container and its manufacturing method according to claim 1, characterized in that: The number and arrangement method of the bamboo composite material diagonal braces (7) can be increased or decreased according to weight allowance and usage conditions.

10. The lightweight, high-strength, multi-purpose bamboo laminated timber container and its manufacturing method according to claim 1, characterized in that: The anti-corrosion, anti-mildew and anti-ultraviolet treatment can adopt the following steps to treat the surface of the bamboo composite material with a silicone-polyurethane composite super-hydrophobic coating. The coating is formed by hybridizing polydimethylsiloxane (PDMS) modified polyurethane (PU) and nano-silicon dioxide (SiO2). Through the synergistic effect of the micro-nano graded rough structure and the low surface energy siloxy groups, a super-hydrophobic interface with a static water contact angle (WCA) ≥150° and a sliding angle (SA) ≤10° is formed. At the same time, resorcinol-formaldehyde resin (RF) is embedded to fill microporous defects, thereby inhibiting the attachment of microorganisms and the penetration of corrosive media.

Images