Split wedge shaft cover plate close plane hinge joint and its assembling method

Abstract

The present application relates to a kind of separate wedge axle cover plate close plane hinge joint, comprising: upper cover plate, concave cavity nut-conversion head combination, outer ring wedge sleeve, wedge pin shaft, inner ring wedge sleeve, ear plate, first concave cavity nut, filler combination, lower cover plate;Upper cover plate, lower cover plate are sequentially provided with concave cavity nut-conversion head combination, wedge pin shaft, outer ring wedge sleeve, inner ring wedge sleeve is respectively set in concave cavity nut-conversion head combination, wedge pin shaft outside, ear plate is set in inner ring wedge sleeve outside, first concave cavity nut is set in wedge pin shaft outside, filler combination is simultaneously provided on upper cover plate, lower cover plate;Wedge pin shaft is variable cross-section steel cylinder.Compared with prior art, the present application realizes the goal of "restraining relative linear displacement, releasing relative angular displacement, bending resistance in node area, low design and processing difficulty", and can be applied to the connection of any number and any included angle of axial force component intersection in plane.

Description

Technical Field

[0001] This invention relates to the field of structural engineering in building engineering technology, and in particular to a separable wedge cover plate tight-fitting planar hinge joint and its assembly method. Background Technology

[0002] With the significant increase in the geometric scale and structural complexity of modern architecture, the uncontrollable deviation between the actual structure and its mechanical model has become increasingly pronounced. The main sources of this deviation include the randomness of loads, the uncertainty of structural stiffness and bearing capacity, and the difference between the actual stress state of components and their design state. Among these, the unavoidable discrepancy between the actual constraint conditions at the ends of components and their mechanical assumptions makes structural modeling deviations and stress analysis errors a major challenge in the design and construction of large and complex building structures.

[0003] In fact, key tasks such as the analysis and design of large and complex structures and the safety assurance of completed buildings all heavily rely on the reliability of structural simulation analysis results. To improve design and construction quality and safety, on the one hand, we should establish as detailed analysis models as possible; on the other hand, we should further improve construction production levels so that the stress state of actual structural components after completion is highly consistent with the preset state of the structural design model.

[0004] One of the typical problems leading to discrepancies between the actual stress state of building structural members and their pre-defined analytical models is that the "hinge nodes" commonly used in actual structures cannot achieve the connection goal of "fully constraining relative linear displacement and fully releasing relative angular displacement" between connected members. For axial force members (braces, connecting rods, cables, viscous dampers, etc.) that use a large number of end hinges in building structures, their actual end constraints often differ significantly from the mechanical behavior of the ideal hinge node.

[0005] The reasons for the above problems are as follows: on the one hand, while releasing the rotational constraints of the node to the greatest extent, the actual hinge node construction often weakens the constraint on the relative linear displacement of the component end; on the other hand, under the premise of ensuring the constraint stiffness of the node on the linear displacement, the node construction often introduces additional rotational constraints on the component end, making the preset hinge node a "semi-rigid" node in reality.

[0006] Furthermore, multiple axial members converging at the same node in a plane often place significant demands on the out-of-plane stiffness of their connecting nodes. The currently commonly used "single pin + single node plate" construction cannot generate sufficient out-of-plane bending resistance at the node, affecting the overall (out-of-plane) stability of the axial member intersection system. For hinged nodes with multiple members converging, the currently commonly used "single pin + multiple lugs" construction results in complex pin stress, higher internal force requirements, and increased design difficulty. Summary of the Invention

[0007] To address the aforementioned problems in the prior art, this invention provides a separable wedge cover plate tight planar hinge node and its assembly method, aiming to achieve the goals of "constraining relative linear displacement, releasing relative angular displacement, strong bending resistance in the node area, and low design and processing difficulty," and can be applied to the intersection and connection of axial force components of any number and any included angle in a plane.

[0008] The objective of this invention can be achieved through the following technical solutions: This invention employs wedge-shaped pins and ring wedge assemblies to achieve a tight connection between the pins and the node plates and the end lugs of the components, ensuring strong constraint of the node on the relative linear displacement of the component ends. It uses separate sets of pin assemblies to connect multiple axial force components, with each component clearly corresponding to its assigned pin assembly. The strength of the pins connected to components with different design internal forces can vary, ensuring that the reliability of the components connected to the node is similar. Multiple sets of pins are connected using upper and lower cover plates with filler. Under out-of-plane loads, the upper and lower cover plates form a tension-compression assembly, significantly increasing the out-of-plane bending stiffness and bearing capacity of the node region. Because the separate pin assemblies and upper and lower cover plates can freely adjust their geometric position and planar shape, the node can be applied to the intersection of any number and angle of axial force components in the plane, greatly alleviating the structural complexity and design and processing difficulty of multi-rod convergence nodes.

[0009] This invention provides a separable wedge-shaped cover plate tight-fitting planar hinge node, comprising: an upper cover plate, a cavity nut-converter assembly, an outer ring wedge sleeve, a wedge-shaped pin, an inner ring wedge sleeve, an ear plate, a first cavity nut, a filler assembly, and a lower cover plate; the cavity nut-converter assembly and the wedge-shaped pin are sequentially inserted through the upper and lower cover plates; the outer ring wedge sleeve and the inner ring wedge sleeve are respectively sleeved on the cavity nut-converter assembly and the wedge-shaped pin; the ear plate is sleeved on the inner ring wedge sleeve; the first cavity nut is sleeved on the wedge-shaped pin; and the filler assembly is inserted through both the upper and lower cover plates; the wedge-shaped pin is a variable cross-section steel cylinder; The upper cover plate includes a plate body with a beveled circular hole and a standard circular hole; an outer ring wedge sleeve passes through the beveled circular hole, and a filler assembly passes through the standard circular hole; the lower cover plate has the same structure as the upper cover plate. The cavity nut-adapter assembly includes a second cavity nut and an adapter connected to each other; The outer ring wedge sleeve is a ring-shaped whole formed by multiple identical components, including multiple identical outer ring wedge blades and multiple identical first connecting heads. One end of each of the multiple outer ring wedge blades is connected to one end of its corresponding first connecting head, and the first connecting head has a groove inside for engaging with the protrusion at the bottom of the adapter. The inner ring wedge sleeve is a ring-shaped whole formed by multiple identical components, including multiple identical inner ring wedge blades and multiple identical second connecting heads. One end of each of the multiple inner ring wedge blades is connected to one end of its corresponding second connecting head. The ear plate is a common steel structure plate with a through circular hole in the middle. The end of the circular hole is stepped to achieve the engagement of the ear plate with the inner ring wedge sleeve. The ear plate can be connected to any axial force component (support, connecting rod, cable, viscous damper, etc.). The connection method can be divided into factory prefabrication, on-site welding, etc., depending on the specific working conditions. The filler assembly includes: a mandrel, a sleeve, a washer, and a nut; wherein the mandrel is fitted with a sleeve, a washer, and a nut.

[0010] Furthermore, the plate body is a common steel structure plate; the inner wall of the obliquely cut circular hole is an inclined surface, and the standard circular hole is a standard circular hole with a defined diameter.

[0011] Furthermore, the second concave nut is a circular nut with a concave cavity at the bottom, and the inner wall of the second concave nut is pre-engraved with standard threads; the adapter is a steel cylinder with pre-engraved standard threads on its outer wall. The bottom of the adapter is provided with a protrusion that is embedded in the groove inside the first connecting sleeve to achieve the engagement between the adapter and the outer ring wedge sleeve.

[0012] Furthermore, the inner wall of the outer ring wedge blade is a circular curved surface of equal diameter, and the outer wall of the outer ring wedge blade is an outwardly expanding wedge shape, fitting snugly against the inner wall of the obliquely cut circular hole; the outer ring wedge blades are uniformly and discretely fitted onto the wedge-shaped pins; gaps are provided between adjacent outer ring wedge blades. These gaps provide more deformation space for this novel hinge joint, thereby reducing stress during its assembly and use.

[0013] Furthermore, the part of the wedge pin that contacts the outer ring wedge sleeve is the first constant diameter section, the diameter of which corresponds to the maximum diameter of the wedge pin. The part of the wedge pin that contacts the inner ring wedge sleeve is a variable diameter section with a gradually decreasing diameter. The part of the wedge pin that contacts the first cavity nut is the second constant diameter section, the diameter of which corresponds to the minimum diameter of the wedge pin. The second constant diameter section has a standard thread pre-engraved on it.

[0014] Furthermore, the outer wall of the inner ring wedge blade is a circular curved surface of equal diameter, and the inner wall of the inner ring wedge blade is an outwardly expanding wedge shape; the inner ring wedge blades are uniformly and discretely fitted onto the wedge pin shaft; a gap is provided between adjacent inner ring wedge blades. The gap provides more deformation space for this novel hinge joint, thereby reducing stress during its assembly and use; Furthermore, the diameter of the tail end of the inner ring wedge blade is increased to form a protrusion, so as to achieve the fitting between the inner ring wedge sleeve and the ear plate.

[0015] Furthermore, the first cavity nut is a round nut with a cavity at the bottom, and the inner wall of the first cavity nut is pre-engraved with standard threads.

[0016] Furthermore, the shaft is a steel cylinder with pre-engraved standard threads at both ends, the sleeve is a steel sleeve of equal diameter, and the sleeve is fitted on the outside of the mandrel, which can significantly increase the out-of-plane bending stiffness and load-bearing capacity of the joint area; the gasket is a standard gasket to fill the gap that may be generated during the assembly of this new type of hinge joint; the nut is a standard round nut with a standard round threaded hole in the center.

[0017] The present invention also provides an assembly method for a separable wedge cover plate with a tight-fitting planar hinge node, comprising the following steps: S1: The upper and lower cover plates are pre-processed in the factory, and several through oblique cut round holes and one through standard round hole are opened according to the actual application scenario. The inner ring wedge blade is put into the ear plate round hole, the wedge pin is inserted, and the first cavity nut is screwed in to initially realize the connection between the ear plate and the wedge pin and the position fixation of the wedge pin. S2: Place the outer ring wedge sleeve pieces on the adapter head. When placing them, make sure that the protrusion at the bottom of the adapter head fits into the groove at the top of the outer ring wedge sleeve. Push the adapter head and the outer ring wedge sleeve tightly into the oblique cut round hole of the upper cover plate from bottom to top. Put the upper cover plate with the adapter head and the outer ring wedge sleeve on the wedge pin and screw in the second cavity nut to initially achieve the connection between the upper cover plate, the ear plate and the wedge pin. S3: Using the same method as in S1 and S2, the lower cover plate and the ear plate are connected by the cavity nut-converter assembly and the first cavity nut, thus initially realizing the connection between the lower cover plate, the ear plate and the wedge pin. S4: Assemble the filler assembly by passing the mandrel sequentially through the upper cover plate, gasket, sleeve, gasket and lower cover plate, connecting the upper cover plate and lower cover plate in series, and tightening all nuts to achieve the connection goal of "constraining relative linear displacement and releasing relative angular displacement".

[0018] Compared with the prior art, the present invention has the following advantages: The planar hinge joint using multiple wedge-shaped pins and cover plates disclosed in this invention can maximally restrict linear displacement and release angular displacement, while avoiding the increased design difficulty and decreased out-of-plane stiffness caused by the intersection of multiple rods. When the building structure deforms, the inner and outer ring wedge sleeves that fill the gaps between the wedge-shaped pins and the node plate and the end ear plates of the components constrain the relative linear displacement between the components, ensuring that the joint achieves strong constraint on the relative linear displacement of the component ends and zero constraint on the relative angular displacement as much as possible. In addition, the use of separate multiple sets of pin assemblies can use pin assemblies of different strengths according to the design internal forces of different components to ensure that the reliability of different components is as close as possible, and can also cooperate with the upper and lower cover plates to improve the out-of-plane stiffness of the joint and reduce the design difficulty of the joint. Therefore, this invention can be recognized as a "highly efficient, convenient and reliable hinge joint for building structures". Attached Figure Description

[0019] Figure 1This is a cross-sectional view of the sealing plane hinge node of the split wedge cover plate in an embodiment of the present invention; Figure 2 This is a schematic diagram of the upper cover plate in an embodiment of the present invention; Figure 3 This is a schematic diagram of the cavity nut-converter assembly in an embodiment of the present invention; Figure 4 This is a cross-sectional view of the outer ring wedge sleeve in an embodiment of the present invention; Figure 5 This is a schematic diagram of the wedge-shaped pin in an embodiment of the present invention; Figure 6 This is a schematic diagram of the inner ring wedge sleeve in an embodiment of the present invention; Figure 7 This is a schematic diagram of the filler assembly in an embodiment of the present invention; Figure 8 This is a schematic diagram of a split wedge cover plate tightly fitted with a planar hinge node connecting several rods in an embodiment of the present invention; Reference numerals: 1. Upper cover plate; 2. Cavity nut-converter assembly; 3. Outer ring wedge sleeve; 4. Wedge pin; 5. Inner ring wedge sleeve; 6. Ear plate; 7. First cavity nut; 8. Filler assembly; 9. Lower cover plate; 11. Plate body; 12. Beveled circular hole; 13. Standard circular hole; 21. Second cavity nut; 22. Converter; 31. Outer ring wedge blade; 32. First connecting sleeve; 51. Inner ring wedge blade; 52. Second connecting sleeve; 81. Mandrel; 82. Sleeve; 83. Washer; 84. Nut. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. Component models, material names, connection structures, control methods, algorithms, and other features not explicitly described in this technical solution are considered common technical features disclosed in the prior art.

[0021] Example 1 This embodiment provides a separable wedge cover plate tight-fitting planar hinge node, such as Figure 1 As shown, it includes: an upper cover plate 1, a cavity nut-converter assembly 2, an outer ring wedge sleeve 3, a wedge pin 4, an inner ring wedge sleeve 5, an ear plate 6, a first cavity nut 7, a filler assembly 8, and a lower cover plate 9; the cavity nut-converter assembly 2 and the wedge pin 4 are sequentially mounted on both the upper cover plate 1 and the lower cover plate 9; the outer ring wedge sleeve 3 and the inner ring wedge sleeve 5 are respectively fitted over the cavity nut-converter assembly 2 and the wedge pin 4; the ear plate 6 is fitted over the inner ring wedge sleeve 5; the first cavity nut 7 is fitted over the wedge pin 4; and the filler assembly 8 is simultaneously mounted on both the upper cover plate 1 and the lower cover plate 9; the wedge pin 4 is a variable cross-section steel cylinder, such as... Figure 5 As shown; like Figure 2As shown, the upper cover plate 1 includes a plate body 11, on which a beveled circular hole 12 and a standard circular hole 13 are provided; the outer ring wedge sleeve 3 passes through the beveled circular hole 12, and the filler assembly 8 passes through the standard circular hole 13; the structure of the lower cover plate 9 is the same as that of the upper cover plate 1. like Figure 3 As shown, the cavity nut-converter assembly 2 includes a second cavity nut 21 and a converter 22 that are connected to each other; like Figure 4 As shown, the outer ring wedge sleeve 3 is a ring-shaped whole formed by multiple identical components, including multiple identical outer ring wedge-shaped blades 31 and multiple identical first connecting sleeves 32. One end of each of the multiple outer ring wedge-shaped blades 31 is connected to one end of its corresponding first connecting sleeve 32, and the first connecting sleeve 32 has a groove inside for engaging with the protrusion at the bottom of the adapter head 22; as shown Figure 6 As shown, the inner ring wedge sleeve 5 is a ring-shaped whole formed by multiple identical components, including multiple identical inner ring wedge blades 51 and multiple identical second connecting sleeves 52. One end of each of the multiple inner ring wedge blades 51 is connected to one end of its corresponding second connecting sleeve 52. The ear plate 6 is a common steel structure plate with a through circular hole in the middle. The end of the circular hole is provided with a step to realize the engagement of the ear plate 6 with the inner ring wedge sleeve 5. The ear plate 6 can be connected to any axial force component (support, connecting rod, cable, viscous damper, etc.). The connection method can be divided into factory prefabrication, on-site welding, etc., depending on the specific working conditions. like Figure 7 As shown, the filler assembly 8 includes: a mandrel 81, a sleeve 82, a washer 83, and a nut 84; wherein the mandrel 81 is fitted with a sleeve 82, a washer 83, and a nut 84.

[0022] In a specific embodiment, the plate 11 is a common steel structure plate; the inner wall of the obliquely cut circular hole 12 is an inclined surface, and the standard circular hole 13 is a standard circular hole with a defined diameter.

[0023] In a specific embodiment, the second concave nut 21 is a circular nut with a concave cavity at the bottom, and the inner wall of the second concave nut 21 is pre-engraved with standard threads; the adapter 22 is a steel cylinder with pre-engraved standard threads on its outer wall. The bottom of the adapter 22 is provided with a protrusion that is embedded in the groove inside the first connecting sleeve 32 to achieve the engagement between the adapter 22 and the outer ring wedge sleeve 3.

[0024] In a specific embodiment, the inner wall of the outer ring wedge blade 31 is a circular curved surface of equal diameter, and the outer wall of the outer ring wedge blade 31 is an outwardly expanding wedge shape. The outer ring wedge blade 31 fits against the inner wall of the obliquely cut circular hole 12. The outer ring wedge blades 31 are uniformly and discretely sleeved on the wedge pin 4. A gap is provided between adjacent outer ring wedge blades 31. The gap provides more deformation space for this novel hinge joint, thereby reducing stress during its assembly and use.

[0025] In a specific embodiment, the part of the wedge pin 4 that contacts the outer ring wedge sleeve 3 is the first constant diameter section, the diameter of which corresponds to the maximum diameter of the wedge pin 4. The part of the wedge pin 4 that contacts the inner ring wedge sleeve 5 is a variable diameter section with a gradually decreasing diameter. The part of the wedge pin 4 that contacts the first concave nut 7 is the second constant diameter section, the second constant diameter section corresponding to the minimum diameter of the wedge pin 4. The second constant diameter section is pre-engraved with standard threads.

[0026] In a specific embodiment, the outer wall of the inner ring wedge blade 51 is a circular curved surface of equal diameter, and the inner wall of the inner ring wedge blade 51 is a wedge shape that expands outward; the inner ring wedge blades 51 are uniformly and discretely sleeved on the wedge pin 4; a gap is provided between adjacent inner ring wedge blades 51. The gap provides more deformation space for this novel hinge joint, thereby reducing stress during its assembly and use; In a specific implementation, the diameter of the tail of the inner ring wedge blade 51 is increased to form a protrusion, so as to achieve the fitting between the inner ring wedge sleeve 5 and the ear plate 6.

[0027] In a specific embodiment, the first concave nut 7 is a round nut with a concave cavity at the bottom, and the inner wall of the first concave nut 7 is pre-engraved with standard threads.

[0028] In a specific embodiment, the mandrel 81 is a steel cylinder with pre-engraved standard threads at both ends, the sleeve 82 is a steel sleeve of equal diameter, and the sleeve 82 is fitted on the outside of the mandrel 81, which can significantly increase the out-of-plane bending stiffness and load-bearing capacity of the node region; the washer 83 is a standard washer to fill the gap that may be generated during the assembly of the new hinge node; the nut 84 is a standard round nut, and a standard round threaded hole is opened in the center of the nut 84.

[0029] This embodiment also provides an assembly method for a separable wedge cover plate with a tight-fitting planar hinge node, including the following steps: S1: The upper cover plate 1 and the lower cover plate 9 are pre-processed in the factory, and several through obliquely cut round holes 12 and a through standard round hole 13 are opened according to the actual application scenario. The inner ring wedge blade 51 is placed into the round hole of the ear plate 6, the wedge pin 4 is inserted, and the first concave nut 7 is screwed in to initially realize the connection between the ear plate 6 and the wedge pin 4 and the position fixation of the wedge pin 4. S2: Place the outer ring wedge sleeve 3 pieces on the converter head 22. When placing them, make sure that the protrusion at the bottom of the converter head 22 fits into the groove at the top of the outer ring wedge sleeve 3. Push the converter head 22 and the outer ring wedge sleeve 3 tightly into the oblique cut round hole 12 of the upper cover plate from bottom to top. Put the upper cover plate 1, which is equipped with the converter head 22 and the outer ring wedge sleeve 3, onto the wedge pin and screw in the second cavity nut 21. The connection between the upper cover plate 1, the ear plate 6 and the wedge pin 4 is initially realized. S3: Using the same method as in S1 and S2, the lower cover plate 9 and the ear plate 6 are connected by the cavity nut-converter assembly 2 and the first cavity nut 7, thus initially realizing the connection between the lower cover plate 9, the ear plate 6 and the wedge pin 4. S4: Assemble the filler assembly 8, passing the mandrel 81 sequentially through the upper cover plate 1, gasket 83, sleeve 82, gasket 83, and lower cover plate 9, connecting the upper cover plate 1 and lower cover plate 9 in series, and tightening all nuts to achieve the connection goal of "constraining relative linear displacement and releasing relative angular displacement." Figure 8 The diagram shown is a schematic of several rods connected by a tight-fitting planar hinge node of a split wedge shaft cover plate.

[0030] Components not described in detail in this embodiment are all existing components that can be purchased through public channels.

[0031] The above description of the embodiments is provided to enable those skilled in the art to understand and use the present invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A separable wedge-shaped cover plate tight-fitting planar hinge node, characterized in that, include: The upper cover plate (1), the cavity nut-converter assembly (2), the outer ring wedge sleeve (3), the wedge pin (4), the inner ring wedge sleeve (5), the ear plate (6), the first cavity nut (7), the filler assembly (8), and the lower cover plate (9) are respectively fitted on the upper cover plate (1) and the lower cover plate (9). The cavity nut-converter assembly (2) and the wedge pin (4) are respectively fitted on the cavity nut-converter assembly (2) and the wedge pin (4). The ear plate (6) is fitted on the inner ring wedge sleeve (5). The first cavity nut (7) is fitted on the wedge pin (4). The filler assembly (8) is simultaneously fitted on the upper cover plate (1) and the lower cover plate (9). The wedge pin (4) is a variable cross-section steel cylinder. The upper cover plate (1) includes a plate body (11), on which a beveled circular hole (12) and a standard circular hole (13) are provided; the outer ring wedge sleeve (3) passes through the beveled circular hole (12), and the filler assembly (8) passes through the standard circular hole (13); the structure of the lower cover plate (9) is the same as that of the upper cover plate (1); the cavity nut-converter assembly (2) includes a second cavity nut (21) and a converter (22) connected to each other. The outer ring wedge sleeve (3) includes multiple identical outer ring wedge blades (31) and multiple identical first connecting heads (32). One end of each of the multiple outer ring wedge blades (31) is connected to one end of its corresponding first connecting head (32), and the first connecting head (32) has a groove inside for engaging with the protrusion at the bottom of the adapter (22). The inner ring wedge sleeve (5) includes multiple identical inner ring wedge blades (51) and multiple identical second connecting heads (52). One end of each of the multiple inner ring wedge blades (51) is connected to one end of its corresponding second connecting head (52). The part of the wedge pin (4) that contacts the outer ring wedge sleeve (3) is the first constant diameter section, the diameter of the first constant diameter section corresponds to the maximum diameter of the wedge pin (4), the part of the wedge pin (4) that contacts the inner ring wedge sleeve (5) is the variable diameter section with a gradually decreasing diameter, the part of the wedge pin (4) that contacts the first concave nut (7) is the second constant diameter section, the second constant diameter section corresponds to the minimum diameter of the wedge pin (4), and the second constant diameter section is pre-engraved with standard threads.

2. The separable wedge cover plate tight-fitting planar hinge node according to claim 1, characterized in that, The plate (11) is a common steel structure plate; the inner wall of the obliquely cut circular hole (12) is an inclined surface; and the standard circular hole (13) is a standard circular hole with a defined diameter.

3. The separable wedge cover plate tight-fitting planar hinge node according to claim 1, characterized in that, The second cavity nut (21) is a round nut with a cavity at the bottom, and the inner wall of the second cavity nut (21) is pre-engraved with standard threads; the adapter (22) is a steel cylinder with pre-engraved standard threads on the outer wall.

4. The separable wedge cover plate tight-fitting planar hinge node according to claim 1, characterized in that, The inner wall of the outer ring wedge blade (31) is a circular curved surface with equal diameter, and the outer wall of the outer ring wedge blade (31) is a wedge shape that expands outward. The outer ring wedge blade (31) fits against the inner wall of the obliquely cut circular hole (12). The outer ring wedge blade (31) is uniformly and discretely sleeved on the wedge pin (4). There is a gap between adjacent outer ring wedge blades (31).

5. A separable wedge-shaped cover plate tight-fitting planar hinge node according to claim 1, characterized in that, The outer wall of the inner ring wedge blade (51) is a circular curved surface with equal diameter, and the inner wall of the inner ring wedge blade (51) is a wedge shape that expands outward; the inner ring wedge blades (51) are uniformly and discretely sleeved on the wedge pin (4); there is a gap between adjacent inner ring wedge blades (51).

6. The separable wedge cover plate tight-fitting planar hinge node according to claim 1, characterized in that, The inner ring wedge blade (51) has an increased tail diameter to form a protrusion, so as to achieve the fitting between the inner ring wedge sleeve (5) and the ear plate (6).

7. A separable wedge cover plate tight-fitting planar hinge node according to claim 1, characterized in that, The first concave nut (7) is a round nut with a concave cavity at the bottom, and the inner wall of the first concave nut (7) is pre-engraved with standard threads; the ear plate (6) is an ordinary steel structure plate with a through round hole in the middle, and the end of the round hole is provided with a step to realize the engagement of the ear plate (6) with the inner ring wedge sleeve (5).

8. A separable wedge-shaped cover plate tight-fitting planar hinge node according to claim 1, characterized in that, The filler assembly (8) includes: a mandrel (81), a sleeve (82), a washer (83), and a nut (84), wherein the mandrel (81) is fitted with the sleeve (82), the washer (83), and the nut (84); The mandrel (81) is a steel cylinder with pre-engraved standard threads at both ends. The sleeve (82) is a steel sleeve of equal diameter and is fitted around the outside of the mandrel (81). The washer (83) is a standard washer and the nut (84) is a standard round nut with a standard round threaded hole in the center.

9. A method for assembling a separable wedge cover plate with a tight-fitting planar hinge joint as described in any one of claims 1-8, characterized in that, Includes the following steps: S1: The upper cover plate (1) and lower cover plate (9) are pre-processed in the factory, and several through oblique cut round holes (12) and a through standard round hole (13) are opened according to the actual application scenario. The inner ring wedge blade (51) is placed into the round hole of the ear plate (6), the wedge pin (4) is inserted, and the first cavity nut (7) is screwed in to initially realize the connection between the ear plate (6) and the wedge pin (4) and the position of the wedge pin (4). S2: Place the outer ring wedge sleeve (3) in pieces on the converter head (22). When placing it, make sure that the protrusion at the bottom of the converter head (22) fits into the groove at the top of the outer ring wedge sleeve (3). Push the converter head (22) and the outer ring wedge sleeve (3) tightly into the oblique cut round hole of the upper cover plate (1) from bottom to top. Put the upper cover plate with the converter head (22) and the outer ring wedge sleeve (3) on the wedge pin (4) and screw in the second cavity nut (21). The connection between the upper cover plate (1), the ear plate (6) and the wedge pin (4) is initially realized. S3: Using the same method as in S1 and S2, the lower cover plate (9) and the ear plate (6) are connected by the cavity nut-converter assembly (2) and the first cavity nut (7), thus initially realizing the connection between the lower cover plate (9), the ear plate (6) and the wedge pin (4); S4: Assemble the filler assembly (8), pass the mandrel (81) through the upper cover plate (1), gasket (83), sleeve (82), gasket (83) and lower cover plate (9) in sequence, connect the upper cover plate (1) and lower cover plate (9) in series, and tighten all nuts to achieve the connection goal of "constraining relative linear displacement and releasing relative angular displacement".

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