Wooden structure cross joint locking connector

Abstract

The application belongs to the technical field of building structures and discloses a wood structure cross intersection node locking connector, which comprises a main sleeve body and a secondary sleeve body, a plurality of groups of butt joints are arranged on the circumferential surface of the main sleeve body, butt joint sliding blocks are slidably connected in the butt joints, and the secondary sleeve body is welded to one end of the butt joint sliding blocks. In the application, the whole structure adopts a modular detachable design, so that when the structure is damaged, only the damaged position needs to be replaced, the whole component is not involved, the maintenance cost can be effectively reduced, the detachable structure enables the structure to be assembled and used in a targeted manner, unnecessary assembly space waste is reduced, the overall application type is improved, the wood structure cross intersection node locking connector is convenient to use, and has the advantages of flexible and adjustable structure, convenient replacement and high practicality.

Description

Technical Field

[0001] This utility model relates to the field of building structure technology, and in particular to a locking connector for a cross-shaped node in a wooden structure. Background Technology

[0002] With the transformation of modern architecture towards environmental protection and energy conservation, wood, due to its lightweight, low energy consumption, and eco-friendly characteristics, is gradually becoming an important building material to replace traditional concrete and steel, possessing extremely high research value and application potential. Compared to concrete and steel structures, wood structures can significantly reduce carbon emissions during construction. Furthermore, its unique connection methods and material properties allow for faster construction. In wood structures, joint connections are crucial components, and their performance directly affects the overall safety and stability of the building.

[0003] Chinese invention patent application number CN202510085233.4 discloses a non-standard mortise and tenon steel-wood composite beam-column joint and its construction method. The joint includes a lower column, an upper column, and a wooden beam. Steel plates and steel sleeves are set at the connection between the lower column, the upper column and the wooden beam. The lower column and the upper column are connected by a core tube mortise and tenon joint. The steel plates are symmetrically distributed on the upper and lower sides of the wooden beam. The steel plates include cross-shaped flanges and non-standard webs. Non-standard webs are arranged in a cross shape on the cross-shaped flanges. The non-standard webs are inserted into the wooden beams. The height of the non-standard webs is half the height of the wooden beams. The non-standard webs are W-shaped and include several steel plates that form obtuse angles with each other.

[0004] Regarding the aforementioned technologies, the inventors believe that the following defects exist: the steel sleeves and steel plate structures used to connect the cross points of wooden structures are fixed and cannot be flexibly adjusted, which easily limits the installation position. When only a part of the wooden structure needs to be connected (such as connecting only the top and bottom sides, front and back left, front and back right, etc.), the unused parts will still occupy the assembly space, which will lead to the structure not being able to be assembled smoothly, affecting the installation efficiency. At the same time, the structure is fixed, and once a local deformation occurs, the entire structure needs to be replaced, resulting in high usage costs and room for improvement. Utility Model Content

[0005] To solve the above problems, this utility model provides a locking connector for cross-shaped nodes in wooden structures.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a wooden structure cross-shaped node locking connector, including a main sleeve and a secondary sleeve. Several sets of docking grooves are opened around the four sides of the main sleeve. A docking slider is slidably connected in the docking groove. A secondary sleeve is welded to one end of the docking slider. Locking holes are opened at the bottom surface of the docking groove, the surface of the docking slider, and both ends of one side surface of the secondary sleeve.

[0007] By adopting the above technical solution, the main sleeve is forged from Q235 galvanized steel (cube, side length 150mm × wall thickness 10mm), with four sets of mating grooves (cube, length 100mm × width 50mm × depth 80mm, groove opening rounded corners R5mm) symmetrically opened along the axis on its four sides. The inner wall of the groove is milled (roughness Ra1.6μm) to ensure smooth sliding of the mating slider. Symmetrical limiting grooves (length 100mm × width 10mm × depth 5mm) are opened on both sides inside the mating groove to limit the offset of the mating slider. The bottom of the mating groove, the surface of the mating slider, and one side of the secondary sleeve (through...) All three sets of sleeves have locking holes (12mm diameter, 50mm spacing). The coaxiality error of the three sets of holes is ≤0.5mm. When the secondary sleeve is adjusted to the target position (e.g., perpendicular to the main sleeve), it is fixed to the locking holes with M10 high-strength bolts to ensure a firm connection between the secondary sleeve and the main sleeve. Adjustment flexibility: The clearance fit between the mating groove and the mating slider (0.2mm) + the guide of the limiting slider and the limiting groove allow the secondary sleeve to slide freely along the mating groove (adjustment range 0-100mm) and can be adjusted around the axis of the main sleeve. It is compatible with various types of mating grooves such as "cross," "T-shaped cross," and "L-shaped cross." Timber structure joint type (improved adaptability compared to fixed joint connectors); modular assembly: the main sleeve has 4 pre-set mating slots, and 1-4 secondary sleeves can be flexibly installed according to the needs of timber structure intersection (e.g., 2 for vertical intersections, 4 for omnidirectional intersections), avoiding "unnecessary structures occupying space" (saving installation space), adaptable to more than 90% of timber structure joint types; the mating slider is made of 45# steel heat-treated parts (80mm long × 48mm wide × 48mm thick, with a 0.2mm gap fit with the mating slot), one end of which is connected to the secondary sleeve (galvanized steel, 200mm long × 100mm wide). The joint is fully welded (10mm thick) with a weld height of 5mm and a flaw detection level of Class II to ensure connection strength. Symmetrical limiting sliders (10mm×10mm×80mm, with a 0.1mm clearance fit with the limiting groove) are welded to both sides of the connecting slider, and the length of the limiting slider is consistent with the depth of the connecting groove (to prevent the slider from falling out of the groove). Connection stability: The limiting slider is fully embedded in the limiting groove (contact area ≥90%), capable of withstanding lateral forces on the sub-sleeve, preventing the sub-sleeve from tilting under stress on the wooden structure (tilt angle ≤0.5°), and ensuring overall stability of the joint (improved resistance to deformation compared to structures without guides).

[0008] Furthermore, assembly grooves are provided on both the surface of the secondary sleeve and the surface of the main sleeve.

[0009] By adopting the above technical solution, assembly grooves are opened along the length direction on the surfaces of the main sleeve and the auxiliary sleeve (main sleeve groove length 120mm × width 80mm × depth 50mm; auxiliary sleeve groove length 180mm × width 80mm × depth 50mm), the groove openings are rounded with R3mm (to avoid scratching the wood), and a 3mm thick rubber pad is pasted on the bottom of the groove to increase the friction with the wooden components. The size of the assembly groove can be adapted to different sizes of wooden components by changing the lining board of different thicknesses (wood / metal) (the compatibility range is improved compared to a fixed groove opening); size compatibility: the 80mm width of the assembly groove is compatible with common wooden component sizes. When the size of the wooden component is small, the gap can be adjusted by filling the groove with wooden lining strips (thickness 5-25mm) to ensure tight contact (gap ≤1mm); universal compatibility: the flexible size design of the assembly groove allows the connector to be adapted to various types of wood such as pine, fir, and oak (moisture content 12%-20%), without the need for customized special connectors (improved universality).

[0010] Furthermore, several sets of fastening holes are symmetrically opened on both sides of the assembly groove.

[0011] By adopting the above technical solution, multiple sets of fastening holes (10mm in diameter, 40mm apart) are symmetrically opened on both sides of the assembly slot. The hole positions are aligned with the pre-set through holes of the wooden components (coaxiality error ≤1mm). M8 self-tapping bolts (80mm in length) are passed through the fastening holes and screwed into the wooden components (screwing depth ≥50mm) to ensure that there is no relative slippage between the wooden components and the sleeve (slippage ≤0.1mm). The fastening holes are located on both sides of the locking holes (30mm apart), forming a "symmetrical stress zone" to disperse the torque transmitted by the wooden components (improving torsional strength). When the wooden components are subjected to force (such as vertical load-bearing or horizontal thrust), the force is transmitted to the sleeve through the rubber pad on the inner wall of the assembly slot, and then further fixed by the bolts in the fastening holes, avoiding "hard-on-hard" contact between the wooden components and the sleeve (reducing local compressive stress in the wood) and preventing wood cracking (cracking rate is lower than that of traditional connectors). High-strength connection: The sleeve and the wooden components are double fixed by "assembly slot limiting + bolt fastening", and the shear bearing capacity of the joint is improved compared with traditional mortise and tenon connections.

[0012] Furthermore, the fastening holes are located on both sides of the locking holes.

[0013] By adopting the above technical solution, the positional relationship is set to ensure that the holes do not interfere with each other, thereby ensuring the smooth assembly and fastening of the structure and guaranteeing the quality of the structure in use.

[0014] Furthermore, shims are symmetrically provided on both sides inside the docking groove.

[0015] By adopting the above technical solution, the limiting groove is used to help ensure the stability of the movement of the sub-sleeve, avoid tilting and offset during movement, and thus ensure the verticality of the structural assembly, making it easier to connect and fix the wooden structure.

[0016] Furthermore, limit sliders are symmetrically installed on both sides of the docking slider.

[0017] By adopting the above technical solution, the limiting slider is designed to be used in conjunction with the limiting groove.

[0018] Furthermore, the limiting slider is slidably connected to the limiting groove.

[0019] By adopting the above technical solution, the cooperation between the limiting slider and the limiting groove ensures the movement effect of the sub-sleeve.

[0020] Furthermore, both the main sleeve and the secondary sleeve are made of metal.

[0021] By adopting the above technical solution, both the main sleeve and the auxiliary sleeve are made of hot-dip galvanized Q235 steel (zinc layer thickness ≥85μm), and the surface is passivated to resist rust caused by moisture in the wood (moisture content ≤20%) (extending service life compared to ordinary carbon steel); synergistic corrosion resistance: an anti-corrosion isolation pad (chloroprene rubber, 3mm thick, corrosion resistance grade W2) is installed between the galvanized steel sleeve and the wood to prevent tannic acid in the wood from corroding the metal, while also avoiding electrochemical corrosion caused by direct contact between the metal and wood (extending service life compared to designs without an isolation pad); long-term durability: the high strength and corrosion resistance of the metal material ensure that the connectors remain in good working order even in humid conditions (such as...). Stable operation in scenarios such as bathrooms and outdoors, and load-bearing structures (e.g., beam-column joints), with flexible assembly process and optional secondary sleeves: Select 1-4 sets of secondary sleeves according to the cross-shaped form of the wooden structure (e.g., only vertical or horizontal cross-shaped), insert the connecting slider into the corresponding connecting slot of the main sleeve (the limiting slider is embedded in the limiting slot), and slide it to the target position (e.g., a movement length of 50mm); Locking position: Align the connecting slot, connecting slider, and locking hole of the secondary sleeve, insert the M10 bolt and tighten it to fix the angle and position of the secondary sleeve; Connecting the wooden structure: Insert the wooden components (e.g., beams, columns) into the assembly slots of the main sleeve and secondary sleeve, aligning the pre-set wooden components. Through holes and sleeve fastening holes, insert M8 self-tapping screws and tighten to complete node fixation; Replacement and maintenance process: when a set of sub-sleeves is damaged due to collision or corrosion: loosen the bolts in the corresponding locking holes, pull out the connecting slider (with the damaged sub-sleeve); insert the connecting slider of the new sub-sleeve into the original connecting slot, and repeat the above assembly steps (replacement time is shortened, saving costs compared to overall replacement); Flexible and adjustable structure: 4 sets of connecting slots + sliding sub-sleeve design, adaptable to more than 8 types of wood structure node forms such as "cross, T-type, L-type" (adjustable coverage of wood components), expanding the applicable scenarios compared to fixed node connectors; Convenient replacement: modular design. The design allows for independent disassembly and replacement of individual sub-units (reducing maintenance costs) and solves the problem of "requiring complete replacement for partial damage" in traditional integral connectors. It is highly practical: the metal material and double fixing structure meet the connection needs of wood structures ranging from light-duty (such as partition wall joists) to medium-duty (such as floor beams), and installation requires no special tools (a wrench suffices), making it suitable for rapid on-site construction. Through the synergy of "modular adjustment + high-strength connection + corrosion-resistant design," this connector effectively solves the pain points of traditional wood structure nodes, such as "fixed form, high replacement cost, and poor adaptability," making it particularly suitable for prefabricated wood structure buildings, landscape features, and other scenarios.

[0022] In summary, this utility model has the following beneficial effects:

[0023] In this application, the entire structure adopts a modular and detachable design. Therefore, when the structure is damaged, only the damaged part needs to be replaced, without affecting the entire component. This can effectively reduce maintenance costs. At the same time, the detachable structure allows for targeted assembly and use, reducing unnecessary assembly space waste and improving the overall applicability. It is easy to use and has the advantages of flexible and adjustable structure, convenient replacement, and strong practicality. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0025] Figure 2 This is a schematic diagram of the main body of an embodiment of the present utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the sub-sleeve body according to an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the connection structure of the docking slider and the limiting slider in an embodiment of this utility model.

[0028] In the diagram: 1. Main sleeve; 2. Docking groove; 3. Limiting groove; 4. Secondary sleeve; 5. Assembly groove; 6. Docking slider; 7. Limiting slider; 8. Locking hole; 9. Fastening hole. Detailed Implementation

[0029] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0030] like Figure 1-4As shown in the embodiment of this application, a locking connector for a wooden cross joint is disclosed, including a main sleeve 1 and a secondary sleeve 4. Several sets of mating grooves 2 are formed around the four sides of the main sleeve 1. A mating slider 6 is slidably connected within each of the mating grooves 2. The secondary sleeve 4 is welded to one end of each mating slider 6. Locking holes 8 are formed at the bottom surface of the mating groove 2, the surface of the mating slider 6, and both ends of one side surface of the secondary sleeve 4. The main sleeve 1 is forged from Q235 galvanized steel (cube, 150mm side length × 10mm wall thickness). Four sets of mating grooves 2 (cube, 100mm long × 50mm wide × 80mm deep, with rounded corners R5mm) are symmetrically formed along the axis on its four sides. The inner walls of the grooves are machined by a milling machine (rough milling). The surface roughness Ra is 1.6μm to ensure smooth sliding of the docking slider 6. Symmetrical limiting grooves 3 (100mm long × 10mm wide × 5mm deep) are opened on both sides inside the docking groove 2 to limit the offset of the docking slider 6. Locking holes 8 (12mm diameter, 50mm spacing) are opened on the bottom of the docking groove 2, the surface of the docking slider 6, and one side (through-hole) of the secondary sleeve 4. The coaxiality error of the three sets of holes is ≤0.5mm. When the secondary sleeve 4 is adjusted to the target position (e.g., perpendicular to the main sleeve 1), it is fixed to the locking holes 8 with M10 high-strength bolts to ensure a firm connection between the secondary sleeve 4 and the main sleeve 1. Adjustment flexibility: the clearance fit between the docking groove 2 and the docking slider 6 (0.2mm) + the guide between the limiting slider 7 and the limiting groove 3. The auxiliary sleeve 4 can slide freely along the docking groove 2 (adjustment range 0-100mm) and can be adjusted around the axis of the main sleeve 1, adapting to various wood structure node forms such as "cross intersection", "T-shaped intersection", and "L-shaped intersection" (improving adaptability compared to fixed node connectors); modular assembly: the main sleeve 1 has 4 pre-set docking grooves 2, and 1-4 auxiliary sleeves 4 can be flexibly installed according to the wood structure intersection requirements (e.g., 2 are installed when only vertical intersection is required, and 4 are installed when omnidirectional intersection is required), avoiding "useless structures occupying space" (saving installation space), and adapting to more than 90% of wood structure node forms; the docking slider 6 is a quenched and tempered 45# steel part (80mm long × 48mm wide × 48mm thick, with clearance fit with the docking groove 2). 0.2mm), one end is fully welded to the sub-sleeve 4 (galvanized steel, 200mm long × 100mm wide × 10mm thick) (weld height 5mm, flaw detection level II) to ensure connection strength. The two sides of the butt slider 6 are symmetrically welded with limiting sliders 7 (10mm × 10mm × 80mm, with a clearance fit of 0.1mm with the limiting groove 3), and the length of the limiting slider 7 is consistent with the depth of the butt groove 2 (to prevent the slider from falling out of the groove); connection stability: the limiting slider 7 is fully embedded in the limiting groove 3 (contact area ≥ 90%), which can withstand the lateral force of the sub-sleeve 4, prevent the sub-sleeve 4 from tilting when the wooden structure is under stress (tilt angle ≤ 0.5°), and ensure the overall stability of the node (the deformation resistance is improved compared with the non-guided structure).

[0031] like Figure 1-3As shown, assembly grooves 5 are provided on the surface of both the secondary sleeve 4 and the primary sleeve 1. The primary sleeve 1 and secondary sleeve 4 have assembly grooves 5 along their length (main sleeve 1 groove length 120mm × width 80mm × depth 50mm; secondary sleeve 4 groove length 180mm × width 80mm × depth 50mm). The groove openings are rounded with a radius of R3mm (to avoid scratching the wood), and a 3mm thick rubber pad is attached to the bottom of the groove to increase friction with the wooden components. The dimensions of the assembly grooves 5 can be adjusted by replacing the lining boards (wood / metal) with different thicknesses. It is compatible with wooden components of different sizes (the range of compatibility is improved compared to fixed slots); Size compatibility: The 80mm width of the assembly slot 5 is compatible with common wooden component sizes. When the size of the wooden component is small, the gap can be adjusted by filling the slot with wooden strips (thickness 5-25mm) to ensure tight contact (gap ≤1mm); Universal compatibility: The flexible size design of the assembly slot 5 allows the connector to be compatible with a variety of woods such as pine, fir, and oak (moisture content 12%-20%), without the need for customized special connectors (improved universality).

[0032] like Figure 1 and Figure 2 As shown, several sets of fastening holes 9 are symmetrically opened on both sides of the assembly groove 5. These fastening holes 9 (10mm in diameter, 40mm apart) are aligned with the pre-set through holes on the wooden components (coaxiality error ≤1mm). M8 self-tapping screws (80mm in length) are passed through the fastening holes 9 and screwed into the wooden components (screwing depth ≥50mm) to ensure no relative slippage between the wooden components and the sleeve (slippage ≤0.1mm). The fastening holes 9 are located on both sides of the locking holes 8 (30mm apart), forming a "symmetrical" arrangement. The "stress zone" disperses the torque transmitted by the wooden components (increasing torsional strength); when the wooden components are under stress (such as vertical load-bearing or horizontal thrust), the stress is transmitted to the sleeve through the rubber pad on the inner wall of the assembly groove 5, and then further fixed by the bolts in the fastening hole 9, avoiding "hard-on-hard" contact between the wooden components and the sleeve (reducing local compressive stress in the wood) and preventing the wood from cracking (the cracking rate is lower than that of traditional connectors); high-strength connection: the sleeve and the wooden components are double fixed by "assembly groove 5 limiting + bolt fastening", and the shear bearing capacity of the node is improved compared with traditional mortise and tenon connections.

[0033] like Figure 1 and Figure 3 As shown, the fastening holes 9 are located on both sides of the locking holes 8. The positional relationship is set to ensure that the holes do not interfere with each other, thereby ensuring the smooth assembly and fastening of the structure and ensuring the quality of the structure.

[0034] like Figure 1 and Figure 2As shown, limiting grooves 3 are symmetrically opened on both sides inside the docking groove 2. The limiting grooves 3 are to help ensure the stability of the movement of the sub-sleeve 4, avoid tilting and offset during movement, and thus ensure the verticality of the structural assembly, making it easier to connect and fix the wooden structure.

[0035] like Figure 1 , Figure 3 and Figure 4 As shown, limit sliders 7 are symmetrically installed on both sides of the docking slider 6. The limit sliders 7 are used in conjunction with the limit groove 3.

[0036] like Figure 1 As shown, the limiting slider 7 is slidably connected to the limiting groove 3, and the cooperation between the limiting slider 7 and the limiting groove 3 ensures the movement effect of the sub-sleeve 4.

[0037] like Figure 1-4As shown, both the main sleeve 1 and the auxiliary sleeve 4 are made of metal. Both main sleeve 1 and auxiliary sleeve 4 are made of hot-dip galvanized Q235 steel (zinc layer thickness ≥85μm), with passivated surfaces to resist rust caused by moisture in the wood (moisture content ≤20%) (extending service life compared to ordinary carbon steel); Corrosion resistance: A corrosion-resistant isolation pad (chloroprene rubber, 3mm thick, corrosion resistance grade W2) is installed between the galvanized steel sleeve and the wood to prevent tannins in the wood from corroding the metal, while also avoiding electrochemical corrosion caused by direct contact between the metal and wood (extending service life compared to designs without an isolation pad); Long-lasting durability: The high strength and corrosion resistance of the metal material ensure that the connectors remain durable even in damp conditions. Stable operation in wet (e.g., bathrooms, outdoors) and load-bearing (e.g., beam-column joints) environments; flexible assembly process; optional secondary sleeve 4: Select 1-4 sets of secondary sleeves 4 according to the cross-shaped form of the wooden structure (e.g., only vertical or horizontal cross-shaped); insert the connecting slider 6 into the corresponding connecting groove 2 of the main sleeve 1 (the limiting slider 7 is embedded in the limiting groove 3), and slide it to the target position (e.g., a movement length of 50mm); locking position: align the connecting groove 2, connecting slider 6, and locking holes 8 of the secondary sleeve 4, insert M10 bolts and tighten them to fix the angle and position of the secondary sleeve 4; connecting the wooden structure: insert the wooden components (e.g., beams, columns) into the assembly grooves 5 of the main sleeve 1 and secondary sleeve 4. Align the pre-set through holes of the wooden components with the fastening holes 9 of the sleeve, insert the M8 self-tapping screws and tighten them to complete the node fixing; Replacement and maintenance process: when a set of sub-sleeves 4 is damaged due to collision or corrosion: loosen the bolts of the corresponding locking holes 8, pull out the docking slider 6 (with the damaged sub-sleeve 4); insert the docking slider 6 of the new sub-sleeve 4 into the original docking slot 2, and repeat the above assembly steps (the replacement time is shortened, and the cost is saved compared to the whole replacement); Flexible and adjustable structure: the design of 4 sets of docking slots 2 + sliding sub-sleeves 4 is suitable for more than 8 kinds of wooden structure node forms such as "cross, T-type, L-type" (adjust the coverage range of wooden components), which improves the applicable scenarios compared to fixed node connectors; Easy to replace: The modular design allows each sub-sleeve 4 to be independently disassembled and replaced (reducing maintenance costs) and solving the problem of "replacing the whole unit when partially damaged" in traditional integral connectors; Highly practical: The metal material and double fixing structure meet the connection needs of wood structures ranging from light-duty (such as partition wall joists) to medium-duty (such as floor beams), and installation does not require professional tools (a wrench is sufficient), making it suitable for rapid on-site construction; Through the synergy of "modular adjustment + high-strength connection + corrosion-resistant design", this connector effectively solves the pain points of traditional wood structure nodes such as "fixed form, high replacement cost, and poor adaptability", and is especially suitable for prefabricated wood structure buildings, landscape features, and other scenarios.

[0038] The working principle of the wooden structure cross-shaped node locking connector in this embodiment is as follows: During use, personnel can choose to use the main sleeve 1 alone or in combination with the secondary sleeve 4, depending on the number and position of the wooden structures to be connected. When used alone, the main sleeve 1 is simply inserted into the corresponding wooden structure through the assembly slots 5 at both ends and secured with bolts to achieve the locking operation of the wooden structure. When combined, an appropriate number of secondary sleeves 4 can be selected according to the number and position of the wooden structures. Then, the secondary sleeves 4 are inserted into the corresponding docking slots 2 through the docking sliders 6 on their surfaces. At this time, the limiting sliders 7 on the surface of the docking sliders 6 are also inserted into the limiting slots 3, thereby ensuring the stability of the movement of the docking sliders 6 and preventing deviation during movement, thus ensuring the connection between the secondary sleeves 4 and the main sleeves. The verticality of the main sleeve 1 facilitates better locking of the wooden structure. After the secondary sleeve 4 is moved to the designated position, it can be fixed by locking the secondary sleeve 4 with the locking hole 8 in the docking groove 2 and fasteners. At this time, the corresponding wooden structure can be connected through the assembly groove 5 on the surface of the main sleeve 1 and the secondary sleeve 4, thereby realizing the locking operation of the wooden structure. Since the entire structure adopts a modular and detachable design, when the structure is damaged, only the damaged part needs to be replaced, without affecting the entire component, which can effectively reduce maintenance costs. At the same time, the detachable structure also allows the structure to be assembled and used in a targeted manner, reducing unnecessary assembly space waste and improving the overall applicability, making it easier to use. The device as a whole has the advantages of flexible and adjustable structure, convenient replacement, and strong practicality.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A locking connector for a cross-shaped node in a timber structure, comprising a main sleeve (1) and a secondary sleeve (4), characterized in that: The main sleeve (1) has several sets of docking grooves (2) around its four sides. A docking slider (6) is slidably connected in the docking groove (2). A secondary sleeve (4) is welded to one end of the docking slider (6). Locking holes (8) are provided at the bottom surface of the docking groove (2), the surface of the docking slider (6), and both ends of one side surface of the secondary sleeve (4).

2. The locking connector for the cross-shaped node of a wooden structure according to claim 1, characterized in that: Assembly slots (5) are provided on the surface of both the sub-sleeve (4) and the main sleeve (1).

3. A timber structure cross-joint locking connector according to claim 2, characterised in that: The assembly groove (5) has several sets of fastening holes (9) symmetrically opened on both sides of the surface.

4. The locking connector for the cross-shaped node of a wooden structure according to claim 3, characterized in that: The fastening hole (9) is located on both sides of the locking hole (8).

5. The locking connector for the cross-shaped node of a wooden structure according to claim 1, characterized in that: The docking groove (2) has symmetrically provided limiting grooves (3) on both sides inside.

6. The locking connector for the cross-shaped node of a wooden structure according to claim 1, characterized in that: Limiting sliders (7) are symmetrically installed on both sides of the docking slider (6).

7. A timber structure cross-joint locking connector according to claim 6, characterised in that: The limiting slider (7) is slidably connected to the limiting groove (3).

8. The timber structure cross-joint locking connector according to claim 1, characterized in that: Both the main sleeve (1) and the secondary sleeve (4) are made of metal.

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