Occlusion type bolt connection structure

Abstract

The utility model discloses an occlusion type bolt connection structure which structurally comprises a core plate, a first notch and a second notch are formed in the two sides of the core plate respectively, and a long-strip-shaped hole penetrating through the two sides of the core plate is further formed in the core plate. A third notch matched with the first notch is formed in the side, close to the core plate, of the first clamping plate, and a first bolt hole penetrating through the two sides of the first clamping plate is further formed in the first clamping plate; a fourth notch matched with the second notch is formed in the side, close to the core plate, of the second clamping plate, and a second bolt hole penetrating through the two sides of the second clamping plate is further formed in the second clamping plate; and the bolt connecting pair penetrates through the first bolt hole, the long-strip-shaped hole and the second bolt hole to connect and fix the first clamping plate, the core plate and the second clamping plate. According to the embodiment of the utility model, the connecting surfaces of the core plate, the first clamping plate and the second clamping plate are provided with the mutually matched notches, so that the contact friction of the connecting plate is increased, the shear bearing capacity of the structure is increased, the number of bolts and the size of the connecting plate are reduced, the weight of the structure is reduced, and the stability and the safety are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of steel structure connection, in particular to a bite-type bolt connection structure. Background Art

[0002] At present, the main connection methods between steel structure components or parts include rivet connection, weld connection and bolt connection. Compared with other connection methods, bolt connection can easily repair and replace the structure by removing the bolts, without the need for cutting and re-welding like welded connections. It can also adjust the tightness of the bolts to achieve fine-tuning between components, making the components more accurately installed and aligned. Bolt connection is suitable for connecting steel structure components of different types and specifications. When external forces such as earthquakes occur, it can disperse energy to a certain extent and reduce deformation and damage to the structure. It has good versatility and adaptability. More importantly, the construction of bolt connection is relatively simple, and the connection process can be completed quickly, thereby shortening construction time and improving efficiency.

[0003] Bolt connections include ordinary bolt connections and high-strength bolt connections. Ordinary bolt connections usually refer to the use of general-grade bolts for connection, such as grade 4.6, grade 8.8, etc. This connection method is suitable for some low-load, non-special requirements applications, such as building structures and mechanical equipment. High-strength bolt connections are divided into friction-type connections and pressure-bearing connections. High-strength bolts are made of high-strength steel. During installation, a special wrench is used to tighten the nut with a large torque, which creates a large pre-tension on the screw. This pre-tension can increase the rigidity and load-bearing capacity of the connection, improve the stability and safety of the structure, and have good fatigue resistance. It can withstand dynamic loads such as cyclic loads and vibration, reducing fatigue damage and loosening risks of the structure. During the manufacturing process, the bolts can increase their strength through processes such as heat treatment without the need for complex processing. The connection can be disassembled by loosening the nut, which is very convenient when maintaining, replacing or moving the structure.

[0004] Traditional bolted connections primarily transmit shear forces through bolt shear resistance, pressure-bearing plate holes, or friction between the plates. However, when encountering certain nodes subject to high forces, a large number of bolted connections and large plate sizes are required to effectively ensure structural stability at the joint. This not only increases the deadweight of the joint area, but also raises project costs, increases construction difficulty, and slows down construction. Summary of the Invention

[0005] The utility model provides a bite-type bolt connection structure to solve the technical problem in the prior art that the bolt connection structure has insufficient shear bearing capacity, resulting in unstable structural connection and fixation.

[0006] In order to solve the above technical problems, the present invention provides a bite-type bolt connection structure, which includes:

[0007] A core plate, wherein a first notch and a second notch are respectively provided on both sides of the core plate, and the core plate is also provided with a long strip hole passing through both sides;

[0008] A first splint is provided with a third notch adapted to the first notch on one side of the first splint close to the core plate, and the first splint is further provided with first bolt holes penetrating through two sides;

[0009] A second plywood, wherein a fourth notch adapted to the second notch is provided on a side of the second plywood close to the core plate, and the second plywood is further provided with second bolt holes penetrating through two sides;

[0010] A bolt connection pair passes through the first bolt hole, the elongated hole and the second bolt hole to connect and fix the first clamping plate, the core plate and the second clamping plate.

[0011] Furthermore, a plurality of the first slots are evenly arranged laterally on one side of the core plate, a plurality of the second slots are evenly arranged laterally on the other side of the core plate, a plurality of the third slots are evenly arranged laterally on one side of the first plywood, a plurality of the fourth slots are evenly arranged laterally on one side of the second plywood, the longitudinal length of the first slot is greater than the longitudinal length of the third slot, and the longitudinal length of the second slot is greater than the longitudinal length of the fourth slot.

[0012] Furthermore, the first notch and the second notch are staggered; or,

[0013] The first notch and the second notch are arranged asymmetrically.

[0014] Furthermore, the range of the angle θ between the length direction of the first notch and the second notch and the direction of the axial force applied to the core plate is: 75°≤θ≤90°.

[0015] Furthermore, the inner side walls of the first notch and the second notch are provided with protrusions, and the inner side walls of the third notch and the fourth notch are provided with grooves; or the inner side walls of the first notch and the second notch are provided with grooves, and the inner side walls of the third notch and the fourth notch are provided with protrusions;

[0016] The protrusion corresponds to the groove.

[0017] Furthermore, the cross sections of the first notch, the second notch, the third notch and the fourth notch are V-shaped notches, and the inner side walls of the V-shaped notches have burrs.

[0018] Furthermore, the hole diameters of the first bolt hole and the second bolt hole are D, the slot width L of the V-shaped notch is in the range of 0.3D≤L≤0.5D, and the slot depth H of the V-shaped notch is in the range of 1mm≤H≤2.5mm.

[0019] Furthermore, the bolt connection pair includes a bolt, a nut and a locking piece.

[0020] Furthermore, the diameter of the bolt is d, and the range of the aperture D of the first bolt hole and the second bolt hole is: d+1mm≤D≤d+2mm.

[0021] Furthermore, the locking piece adopts one or more of washer locking, double nut locking, cotter pin locking or welding locking.

[0022] Compared with the prior art, the bite-type bolt connection structure provided by the embodiment of the utility model has the following beneficial effects:

[0023] The embodiment of the present invention provides mutually compatible notches on the connection surfaces between the core plate and the first and second plywood plates, and the bolt connection pair serves as a fastening connector for the first, core, and second plywood plates. The structure is connected and fixed by the cooperation between the first and third notches, and the second and fourth notches, thereby increasing the contact friction between the core plate and the first and second plywood plates, thereby increasing the shear bearing capacity of the bolt connection structure, avoiding the need to set a large number of connecting bolts and large-sized connecting plates at the structural connection nodes, effectively reducing the construction time of the bolt connection structure, reducing the overall weight of the connection nodes, and saving the manufacturing cost of the connector. At the same time, the construction speed of the bolt connection structure can be improved, and the stability and safety of the bolt connection can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a front view of the bite-type bolt connection structure provided by an embodiment of the utility model;

[0025] Figure 2 This is a top view of the interlocking bolt connection structure provided by an embodiment of the present utility model;

[0026] Figure 3 This is a front view of the core plate of the bite-type bolt connection structure provided by an embodiment of the present utility model;

[0027] Figure 4 This is a top view of the core plate of the bite-type bolt connection structure provided by an embodiment of the present utility model;

[0028] Figure 5 yes Figure 3 A local enlarged schematic diagram of point A;

[0029] Figure 6It is a front view of the first clamping plate in the bite-type bolt connection structure provided by an embodiment of the utility model;

[0030] Figure 7 It is a top view of the first clamping plate in the bite-type bolt connection structure provided by an embodiment of the utility model;

[0031] Figure 8 This is a structural diagram of a V-shaped notch in a bite-type bolt connection structure provided by an embodiment of the present utility model;

[0032] Figure 9 It is a structural schematic diagram of a bolt connection pair in a bite-type bolt connection structure provided by an embodiment of the present utility model.

[0033] In the figure, 11, core plate; 111, first notch; 112, second notch; 113, long hole; 12, first clamping plate; 121, third notch; 122, first bolt hole; 13, second clamping plate; 131, fourth notch; 132, second bolt hole; 14, bolt connection pair; 141, bolt; 142, nut; 143, locking piece. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings and embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that directional words such as the terms "middle", "upper", "lower", "inside", "outside", "horizontal", "longitudinal" and the like indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this utility model, "at least" means one or more, unless otherwise specifically defined.

[0037] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0038] like Figure 1-7 It can be seen that the embodiment of the present invention provides a bite-type bolt connection structure, which includes a core plate 11, a first clamping plate 12, a second clamping plate 13 and a bolt connection pair 14.

[0039] The core plate 11 is provided with a first notch 111 and a second notch 112 on both sides, and the core plate 11 is provided with a long hole 113 passing through both sides;

[0040] A third notch 121 is provided on one side of the first clamping plate 12 close to the core plate 11 and adapted to the first notch 111 , and the first clamping plate 12 is provided with first bolt holes 122 running through both sides;

[0041] A fourth notch 131 is provided on one side of the second clamping plate 13 close to the core plate 11 and adapted to the second notch 112 , and the second clamping plate 13 is provided with second bolt holes 132 running through both sides;

[0042] The bolt connection pair 14 passes through the first bolt hole 122 , the elongated hole 113 and the second bolt hole 132 to connect and fix the first clamping plate 12 , the core plate 11 and the second clamping plate 13 .

[0043] The embodiment of the present invention provides mutually compatible notches on the connection surfaces of the core plate 11 and the first and second plywood 12 and 13, and the bolt connection pair 14 serves as a fastening connector for the first and second plywood 12, 11 and 13. The structure is connected and fixed by the cooperation between the first notch 111 and the third notch 121, and the second notch 112 and the fourth notch 131, thereby increasing the contact friction between the core plate 11 and the first and second plywood 12 and 13, thereby increasing the shear bearing capacity of the bolt connection structure, avoiding the need to set a large number of connecting bolts 141 and large-sized connecting plates at the structural connection nodes, effectively reducing the construction time of the bolt connection structure, reducing the overall weight at the connection nodes, and saving the manufacturing cost of the connection parts. At the same time, the construction speed of the bolt connection structure can be improved, and the stability and safety of the bolt connection can be guaranteed.

[0044] The first notch 111 and the second notch 112 provided on both sides of the core plate 11 can be adjusted according to the actual connection relationship of the structure. When the first notch 111 and the second notch 112 are the same, the types of components in the bolt connection structure can be effectively reduced, the processing cost of the components can be reduced, and the applicability of the connection structure can be improved. When the first notch 111 and the second notch 111 are different, the connection structure is an unconventional design. Different notch designs can provide more flexible assembly methods and connection options, making the structure more adaptable to complex engineering requirements, and can better match parts of different shapes and sizes, reduce the gaps between parts, improve the assembly accuracy and stability of the structure, bring more options and optimization possibilities to the connection structure, and improve the flexibility and performance of the overall design of the structure.

[0045] It should be noted that bolt connection pair 14 is a commonly used mechanical connection method, typically used to connect two or more parts. Bolt connection pair 14 includes a bolt 141 and a nut 142. The connection is achieved by screwing nut 142 into the threads of bolt 141. Bolt connection pair 14 has the advantages of simple structure, easy assembly and disassembly, and strong load-bearing capacity. It is widely used in mechanical manufacturing and engineering fields. Bolt connection pair 14 can be classified according to the different connection parts, such as flange connection, pin connection, etc. When using bolt connection pair 14, it is necessary to pay attention to selecting the appropriate thread specifications and torque to ensure the connection tightening force is moderate and avoid overtightening or overloosening.

[0046] like Figure 1-7 It can be seen that in an optional embodiment of the present invention, a plurality of first slots 111 are uniformly arranged laterally on one side of the core plate 11, a plurality of second slots 112 are uniformly arranged laterally on the other side of the core plate 11, a plurality of third slots 121 are uniformly arranged laterally on one side of the first plywood 12, and a plurality of fourth slots 131 are uniformly arranged laterally on one side of the second plywood 13. The longitudinal length of the first slot 111 is greater than the longitudinal length of the third slot 121, and the longitudinal length of the second slot 112 is greater than the longitudinal length of the fourth slot 131.

[0047] Specifically, by setting the longitudinal length of the first notch 111 to be greater than the longitudinal length of the third notch 121, and the longitudinal length of the second notch 112 to be greater than the longitudinal length of the fourth notch 131, when the notches are engaged with each other, the contact area and friction between the notches are increased, so that the connection between the core plate 11 and the plywood is tighter and firmer, and the teeth of the first notch 111 and the second notch 112 set on the core plate 11 are prevented from being easily deformed and damaged due to their short longitudinal length, thereby affecting the stability and reliability of the bolt connection. It should be noted that, for directional words, the horizontal and vertical directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model and simplifying the description, and 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 should not be understood as limiting the specific scope of protection of the utility model.

[0048] Among them, in the bolt connection structure, the core plate 11 is a direct force-bearing component and is easily deformed or broken when subjected to pressure overload. The first notch 111, the second notch 112, the third notch 121 and the fourth notch 131 are arranged uniformly in the transverse direction. When the first splint 12, the core plate 11 and the second splint 13 are connected and fixed, the inner walls of the notches can fit tightly together when they are engaged, increasing the contact friction after engagement, and the force on the core plate 11 can be evenly transmitted to the entire connection structure. The shear force on the core plate 11 can be effectively shared between the notches, thereby increasing the stability of the connection structure and avoiding stress concentration that causes the core plate 11 to break easily. In addition, the third notch 121 and the fourth notch 131 are respectively arranged uniformly in the transverse direction on the entire side of the first splint 12 and the second splint 13, so that the third notch 121 and the fourth notch 131 can be quickly embedded in the first notch 111 and the second notch 112, respectively, thereby improving the applicability of the first splint 12 and the second splint 13.

[0049] like Figure 3-5 It can be seen that in an optional embodiment of the present invention, the first notch 111 and the second notch 112 are staggered; or the first notch 111 and the second notch 112 are asymmetrically arranged.

[0050] Specifically, the first notch 111 and the second notch 112 on the core plate 11 are staggered, with the bottom of the first notch 111 corresponding to the tooth tip of the second notch 112, and the tooth tip of the first notch 111 corresponding to the bottom of the second notch 112. This not only increases the plate thickness between the first notch 111 and the second notch 112, preventing the core plate 11 from being easily broken at the connection point of the groove bottom, and making the pressure on the groove surface of the core plate 11 evenly distributed, but also increases the support points of the connection structure in different directions, making the connection more stable. The tooth tip and the groove bottom are opposite to each other, and when the core plate 11 is under pressure, the various groove walls can effectively share the pressure, reducing the stress concentration inside the core plate 11 and preventing the core plate 11 from being easily broken due to the small plate thickness at the connection point of the groove bottom. The design of the first notch 111 and the second notch 112 being arranged on opposite surfaces and staggered effectively increases the compressive bearing capacity of the core plate 11, improves the stability and reliability of the bolt connection structure, reduces the possibility of loosening or relative movement of the connection structure, and can improve the accuracy of the connection, thereby bringing benefits to the application scenario.

[0051] In addition, the first notch 111 and the second notch 112 are arranged asymmetrically, and the forms of asymmetrical arrangement include offset setting, angle setting, cross setting, and staggered setting. The first notch 111 and the second notch 112 are offset in the horizontal or vertical direction, so that the connection structure has different support characteristics when subjected to force, thereby improving the stability and load-bearing capacity of the connection. The positions of the first notch 111 and the second notch 112 are staggered at a certain angle, so that a certain angle is formed between them. This can increase the support points of the connection structure in specific directions, which is conducive to reducing local stress concentration and improving the overall stability of the structure. The positions of the first notch 111 and the second notch 112 are arranged in a cross-shaped manner, that is, they intersperse with each other in certain areas, which can increase the support area of ​​the connection structure in different directions, effectively disperse the stress points, and improve the load-bearing capacity of the connection. The positions of the first notch 111 and the second notch 112 are staggered in the plane, so that they are not completely symmetrical. This can increase the flexibility and adaptability of the connection structure and help meet the specific needs of different engineering projects. Therefore, the asymmetric setting of the first slot 111 and the second slot 112 can flexibly adjust the positional relationship between the first slot 111 and the second slot 112 according to specific engineering requirements and design needs to achieve better connection effects and performance, thereby improving the applicability and flexibility of the interlocking bolt connection structure.

[0052] like Figure 4 It can be seen that in an optional embodiment of the present invention, the angle θ between the length direction of the first notch 111 and the second notch 112 and the direction of the axial force on the core plate 11 is in the range of 75°≤θ≤90°.

[0053] Specifically, by providing mutually adapted notches on the connection surfaces between the core plate 11 and the first and second plywood 12 and 13, the contact friction of the connection plates is increased, thereby effectively transmitting and dispersing the shear force borne by the bolt connection structure. When the angle θ between the length direction of the first notch 111 and the second notch 112 and the direction of the axial force borne by the core plate 11 is set to: θ≤90°, the analysis of the axial force borne by the core plate 11 shows that when the notch direction is perpendicular to the force line of the core plate 11, the engagement between the core plate 11 and the plywood is mainly borne by its own weight, axial force and friction force opposite to the direction of the axial force. The core plate 11 tends to move in the direction of the axial force borne, and the stress generated at the notch connection of the core plate 11 tends to be minimized, thereby avoiding loosening or relative movement of the connection between the core plate 11 and the plywood, reducing the probability of deformation and damage of the core plate 11, and increasing the stability and reliability of the structure. The range of the angle θ between the length direction of the first notch 111 and the second notch 112 and the direction of the axial force on the core plate 11 is set to: when θ ≥ 75°, the analysis of the axial force on the core plate 11 shows that when the length direction of the notch and the force line of the core plate 11 tend to be 75°, the axial force on the core plate 11 will generate a component force with the same force line as the length direction of the notch, causing the core plate 11 to have a tendency to move in the length direction of the notch. When θ = 75°, the static friction force of the core plate 11 along the length direction of the notch reaches the maximum critical value, and the core plate 11 tends to move. To ensure that there is no movement in the length direction of the notch between the core plate 11 and the clamping plate, the angle θ between the length direction of the notch and the direction of the axial force on the core plate 11 is set to ≥ 75°, which can ensure the improvement of the stability and safety of the bolt connection structure. It can be seen from this that when the angle θ between the length direction of the first notch 111 and the second notch 112 and the direction of the axial force on the core plate 11 is in the range of 75° to 90°, the connection and fixation between the core plate 11, the first plywood 12 and the second plywood 13 is in a stable state, the core plate 11 will not move in the length direction of the notch, and the stress generated at the notch of the core plate 11 tends to be minimized, which can reduce the possibility of deformation and damage of the core plate 11, increase the friction force between the contact surface of the core plate 11 and the first plywood 12 and the second plywood 13, make the bolted connection structure more stable and reliable, and effectively extend the service life of the product structure.

[0054] It should be noted that when the length direction of the notch is less than 90° to the direction of the axial force applied to the core plate 11, the length direction of the first notch 111 and the length direction of the second notch 112 set on both sides of the core plate 11 can be staggered. When the length directions of the first notch 111 and the second notch 112 are different, the axial force applied to the core plate 11 will produce a component force along the length direction. In this way, when the force directions are opposite, the components of the axial force applied to the core plate 11 can offset each other, reducing the concentrated effect of the axial force on a single notch and improving the stability of the connection structure. Secondly, the staggered setting can also improve the bearing capacity of the connection structure. When the connection structure is subjected to external loads, the notches on the core plate 11 will bear part of the axial force. Through the staggered setting, the components of the axial force in the length direction of the notch can offset each other and disperse, thereby reducing the axial force borne by a single notch and reducing the concentration of force on the core plate 11. This can effectively improve the bearing capacity of the connection structure and increase its overall strength and stability.

[0055] Furthermore, the staggered arrangement of the first and second notches 111, 112 can improve the fatigue resistance of the connection structure. In actual use, the connection structure may be subjected to repeated dynamic loads, which can easily lead to fatigue failure. The staggered arrangement offsets and disperses the axial forces along the length of the notches, reducing local stress concentrations and thus lowering the risk of fatigue failure and extending the service life of the connection structure.

[0056] In an optional embodiment of the present invention, protrusions are provided on the inner side walls of the first slot 111 and the second slot 112, and grooves are provided on the inner side walls of the third slot 121 and the fourth slot 131; or, grooves are provided on the inner side walls of the first slot 111 and the second slot 112, and protrusions are provided on the inner side walls of the third slot 121 and the fourth slot 131; the protrusions and the grooves correspond to each other.

[0057] Specifically, by providing protrusions or grooves on the inner side walls of the first notch 111, the second notch 112, the third notch 121, and the fourth notch 131, when the notches are embedded in each other, the protrusions and the grooves engage with each other, forming a simple self-locking effect, increasing the friction and connection force between the notches, making the fitting connection between the core plate 11 and the first plywood 12 and the second plywood 13 tighter, reducing the possibility of loosening and falling off of the connection structure, and improving the firmness and stability of the connection structure. In addition, the fitting between the protrusions and the grooves forms a larger contact area between the core plate 11, the first plywood 12, and the second plywood 13 to offset the axial force and its component forces acting on the dispersed core plate 11, thereby increasing the shear bearing capacity of the core plate 11, making the connection structure more firm, and able to withstand greater loads and vibrations.

[0058] like Figure 4It can be seen that in an optional embodiment of the present invention, the cross-sections of the first notch 111 , the second notch 112 , the third notch 121 and the fourth notch 131 are V-shaped notches, and the inner sidewalls of the V-shaped notches have burrs.

[0059] Specifically, the contact surfaces between the core plate 11 and the first and second plywood 12 and 13 are processed to form a V-shaped notch, thereby increasing the contact area at the node of the connection structure. After the core plate 11, the first and second plywood 12, 13 are processed, a burr portion with a raised shape will appear on the inner wall surface of the notch, and the inner wall of the notch becomes rough and uneven, which increases the contact friction between the core plate 11 and the first and second plywood 12, 13, making the embedding between the notches tighter and less likely to slide, ensuring that the contact friction between the core plate 11 and the plywood can effectively transmit the shear force exerted on the bolt connection structure, increase the shear bearing capacity of the connection structure, and improve the stability and firmness of the connection structure. It should be noted that burrs can increase the contact area between the two workpieces, and burrs can form a tight seal at the interface, effectively preventing foreign matter from entering the connection of the structure, and reducing the risk of oxidation corrosion on the contact surface between the core plate 11 and the first and second plywood 12, 13.

[0060] like Figure 7 、 Figure 8 and Figure 9 It can be seen that in an optional embodiment of the present invention, the aperture of the first bolt hole 122 and the second bolt hole 132 is D, the width L of the V-shaped notch is in the range of: 0.3D≤L≤0.5D, and the depth H of the V-shaped notch is in the range of: 1mm≤H≤2.5mm.

[0061] Specifically, the appropriate aperture and V-notch dimensions of the first bolt hole 122 and the second bolt hole 132 can improve the shear bearing capacity of the connection structure. By setting appropriate aperture and notch dimensions, it is possible to ensure that there is a suitable contact area between the bolt 141 and the core plate 11, thereby increasing the contact area of ​​the connection structure and improving the shear bearing capacity of the structure. In an embodiment of the present invention, by setting the slot width L of the V-notch to the range of 0.3D≤L≤0.5D, where D represents the aperture of the first bolt hole 122 and the second bolt hole 132, and the slot depth H of the V-notch to the range of 1mm≤H≤2.5mm, it is possible to avoid deformation or breakage when the thickness of the core plate 11 is small or the toughness is low, so that the connection structure has good shear bearing capacity, effectively reduces the weight at the connection node, and saves manufacturing costs. At the same time, the problem of connection instability caused by the size difference of the V-notch being too large or too small can be avoided, thereby improving the stability and anti-slip performance of the connection structure. The V-shaped notch design can increase the impedance of the connection structure and effectively prevent the bolt 141 from slipping relative to the core plate 11. During the sliding force process, the appropriate size of the groove width and groove depth can ensure sufficient friction between the bolt 141 and the notch to prevent slippage.

[0062] It should be noted that for high-strength bolt connection structures with a strength of grade 10.9, the size of the notches set on the core plate 11, the first plywood 12 and the second plywood 13 should preferably be a notch width of 3 mm and a notch depth of 1 mm. By engaging the notches, the shear bearing capacity of the connection structure can be improved, thereby ensuring the stability and safety of the connection structure.

[0063] like Figure 9 It can be seen that in an optional embodiment of the present invention, the bolt connection pair 14 includes a bolt 141 , a nut 142 and a locking member 143 .

[0064] Specifically, by providing a locking piece 143 on the bolt connection pair 14, the locking piece 143 is used to limit the movement of the nut 142 to prevent the connection between the bolt 141 and the nut 142 from loosening. After the pre-tightening force is applied to the bolt 141 and the nut 142, the locking piece 143 will limit the movement of the nut 142, so that the connection between the bolt 141 and the nut 142 is always in a tightened state, avoiding deformation or unnecessary damage to the core plate 11 and the splint due to the loosening of the bolt connection pair 14, ensuring the tightening effect of the bolt connection pair 14, and improving the stability and safety of the device. The provision of the locking piece 143 can not only effectively limit the movement of the nut 142 and prevent the bolt 141 connection from loosening under vibration, impact or other external forces, but also the presence of the locking piece 143 can increase the tightening force of the connection pair and reduce the possibility of loosening and deformation of the bolt connection pair 14. Among them, the bolt 141 connection is classified into ordinary bolt connection and high-strength bolt connection according to strength. For the high-strength bolt 141 connection, the bolt connection structure should adopt 10.9 grade high-strength bolts. According to the preset tensile force value calculation requirements specified in the "Steel Structure Design Code", the preset tensile force design value specified in the design code is applied to the high-strength bolt connection. A locking piece 143 must be provided to ensure the reliability and safety of the connection structure and prevent the bolt connection pair 14 from loosening.

[0065] like Figure 8 and Figure 9 It can be seen that in an optional embodiment of the present invention, the diameter of the bolt 141 is d, and the range of the hole diameter D of the first bolt hole 122 and the second bolt hole 132 is: d+1mm≤D≤d+2mm.

[0066] Specifically, by increasing the value range of the aperture D of the first bolt hole 122 and the second bolt hole 132 by 1mm-2mm on the basis of the diameter of the bolt 141, it is ensured that the bolt 141 can be smoothly inserted into the first bolt hole 122 and the second bolt hole 132, and appropriate clearance and freedom are provided. By setting such a value relationship, it can be ensured that the bolt 141 will not be subject to too much restriction during installation, and can effectively transmit the preload force to ensure the reliability of the connection. At the same time, this design also takes into account the convenience of installation and maintenance, because the aperture slightly larger than the diameter of the bolt 141 makes the installation and removal of the bolt 141 easier, and helps to maintain the stability of the connection when the bolt 141 is affected by thermal expansion and contraction. Therefore, according to the design principle of d+1mm to d+2mm, the versatility, reliability and operability of the bolt connection structure can be effectively balanced. In addition, in high-strength bolt connections, for 10.9-level strength bolt connection structures, it is advisable to adopt a size design of aperture D = d + 2 mm. Since the bolt 141 may be affected by temperature changes during use, it is necessary to consider the relationship between the aperture of the first bolt hole 122 and the second bolt hole 132 and the diameter of the bolt 141 to allow the bolt 141 to have a certain degree of freedom when expanding and contracting due to heat and cold.

[0067] like Figure 9 It can be seen that in an optional embodiment of the present invention, the locking member 143 adopts one or more of washer locking, double nut 142 locking, cotter pin locking or welding locking.

[0068] Specifically, washer locking is achieved by adding spring washers, flat washers and other locking parts between the nut 142 and the connector to increase friction and tightening force to prevent loosening. It has a simple structure and is easy to use, and is suitable for light loads and general applications. Double nut 142 locking is to add one or more nuts 142 between the nuts 142 to form a tightening system to make the connection more secure. It has a simple structure and high reliability, and is suitable for heavy loads and high reliability occasions. Split pin locking is to install a split pin or a retaining ring and other locking parts on the nut 142 to prevent the connector from loosening. It is easy to use and suitable for light loads and general applications. Welding locking is to form an integrated connection by welding the bolt 141 and the nut 142. Welding locking has a large tightening force and high reliability, and is suitable for heavy loads and high reliability occasions. In actual applications, it is necessary to select a suitable locking method according to different application scenarios and requirements to ensure the stability and reliability of the tightening effect of the bolt connection pair 14.

[0069] The interlocking bolt connection structure provided by the embodiment of the present invention can be adapted to the construction requirements of different scenarios, and provides users with a convenient and reliable connection structure. When the interlocking bolt connection structure is used, its actual working principle is as follows: mutually adapted notches are set on the core plate 11, the first plywood 12 and the second plywood 13 in the bolt connection structure, and the bolt connection pair 14 serves as a fastening connection member between the core plate 11 and the plywood, and the first notch 111 and the third notch 121, the second notch 112 and the fourth notch 131 are mutually embedded and interlocked, thereby increasing the contact area and contact friction between the core plate 11 and the first plywood 12 and the second plywood 13, thereby increasing the shear bearing capacity of the connection structure and improving the stability and reliability of the connection structure. The embodiment of the present invention also provides a locking piece 143 on the bolt connection pair 14. After the pre-tightening force is applied to the bolt 141 and the nut 142, the locking piece 143 is used to limit the movement of the nut 142, so that the connection between the bolt 141 and the nut 142 is always in a tightened state, avoiding deformation or unnecessary damage of the core plate 11 and the splint due to the loosening of the bolt connection pair 14. The design of the interlocking bolt connection structure effectively increases the shear bearing capacity of the connection structure, avoids the setting of too many connecting bolts 141 and large-sized connecting plates at the connection node of the bolt 141, effectively reduces the construction time of the bolt connection structure, reduces the overall weight of the connection node, and saves the manufacturing cost of the connection parts. At the same time, it can effectively improve the construction speed of the bolt connection structure, ensure the stability and safety of the connection structure, and improve the user experience.

[0070] The specific embodiments described above further illustrate the purpose, technical solutions, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A bite-type bolt connection structure, characterized in that: The structure includes: A core plate, wherein a first notch and a second notch are respectively provided on both sides of the core plate, and the core plate is also provided with a long strip hole passing through both sides; A first splint is provided with a third notch adapted to the first notch on one side of the first splint close to the core plate, and the first splint is further provided with first bolt holes penetrating through two sides; A second plywood, wherein a fourth notch adapted to the second notch is provided on a side of the second plywood close to the core plate, and the second plywood is further provided with second bolt holes penetrating through two sides; A bolt connection pair passes through the first bolt hole, the elongated hole and the second bolt hole to connect and fix the first clamping plate, the core plate and the second clamping plate.

2. The bite-type bolt connection structure according to claim 1, characterized in that: A plurality of the first slots are evenly arranged laterally on one side of the core plate, a plurality of the second slots are evenly arranged laterally on the other side of the core plate, a plurality of the third slots are evenly arranged laterally on one side of the first plywood, a plurality of the fourth slots are evenly arranged laterally on one side of the second plywood, the longitudinal length of the first slot is greater than the longitudinal length of the third slot, and the longitudinal length of the second slot is greater than the longitudinal length of the fourth slot.

3. The bite-type bolt connection structure according to claim 1, characterized in that: The first notch and the second notch are staggered; or, The first notch and the second notch are arranged asymmetrically.

4. The bite-type bolt connection structure according to claim 1, characterized in that: The range of the angle θ between the length direction of the first notch and the second notch and the direction of the axial force applied to the core plate is: 75°≤θ≤90°.

5. The bite-type bolt connection structure according to claim 1, characterized in that: The inner side walls of the first notch and the second notch are provided with protrusions, and the inner side walls of the third notch and the fourth notch are provided with grooves; or the inner side walls of the first notch and the second notch are provided with grooves, and the inner side walls of the third notch and the fourth notch are provided with protrusions; The protrusion corresponds to the groove.

6. The bite-type bolt connection structure according to claim 1, characterized in that: The cross sections of the first notch, the second notch, the third notch and the fourth notch are V-shaped notches, and inner side walls of the V-shaped notches have burrs.

7. The bite-type bolt connection structure according to claim 6, characterized in that: The hole diameters of the first bolt hole and the second bolt hole are D, the width L of the V-shaped notch is in the range of 0.3D≤L≤0.5D, and the depth H of the V-shaped notch is in the range of 1mm≤H≤2.5mm.

8. The bite-type bolt connection structure according to claim 1, characterized in that: The bolt connection pair includes a bolt, a nut and a locking piece.

9. The bite-type bolt connection structure according to claim 8, characterized in that: The diameter of the bolt is d, and the range of the aperture D of the first bolt hole and the second bolt hole is: d+1mm≤D≤d+2mm.

10. The bite-type bolt connection structure according to claim 8, characterized in that: The locking piece is locked by one or more of washer locking, double nut locking, cotter pin locking or welding locking.

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