Structure of double shear damper, close contact node and assembly method

Abstract

To provide a structure of a two-stage shear damper, and an adhesion node.SOLUTION: The present invention relates to the technical field of architectural engineering, specifically to a structure of a two-stage shear damper with a total of six components: a first hinge point, a one-stage wedge link mechanism, a second hinge point, a two-stage wedge link mechanism, a third hinge point, and a fluid viscous damper, an adhesion node, and an assembly method. The two-stage wedge link mechanism is configured such that four small links of the same length are connected by hinges, and the device described in the present invention can restrain the node and release the bending restraint on the end of the rod member.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the technical field of architectural engineering, and in particular to the structure and tightly coupled node of a two-stage shear damper and assembly method. [Background technology]

[0002] As modern architectural structures become more characterized by their "high strength, light weight, and flexibility," the need for vibration control of architectural structures under dynamic loads such as wind loads, strong earthquake effects, environmental and equipment excitation, and human-induced excitation is becoming increasingly apparent. The stroke amplification device for shear dampers is considered to be one of the most reliable methods with the highest overall technical performance.

[0003] The basic configuration of shear dampers (energy dissipators) is a wedge-shaped arrangement of "4 rods + 1 damper," which can create a building structure with high-efficiency inter-story displacement due to the axial movement of the damper. However, the connection nodes of shear damper building structures, and the connection nodes between internal components of shear dampers (SDJ), are commonly used pin-shaft hinge connections, and this type of connection has two major problems.

[0004] First, the connection does not have a strong restraining force against the "relative linear displacement" of the end of the link member. Specifically, due to limitations in processing precision and installation precision, the pin shaft hinge points currently used in the field of architectural construction have the characteristic that the pin shaft diameter is smaller than the node plate hole diameter. When a tendency for relative linear displacement occurs between the ends of two or more components connected by a node, the node cannot effectively restrain the relative linear displacement between the components due to the gap between the pin shaft and the connecting plate. As a result, most of the structural deformation is released and transmitted between the node pin shaft and the hole wall, and cannot be converted into stroke deformation of the energy dissipator. Macroscopically, this phenomenon reflects the insensitivity of the energy dissipator and its connecting parts to small vibration deformation of the architectural structure, resulting in low structural vibration control efficiency.

[0005] Second, the node cannot completely release the bending constraint on the end of the rod member. Specifically, the contact between the pin shaft and the node plate is likely to generate a non-zero rotation start moment between them, which makes it difficult to maintain the axial tension / compression state of the energy dissipator (tension / compression bending state). Summary of the Invention

[0006] The present invention addresses the problem that the shear-type damper connections in the above-mentioned prior art do not have a high restraining capacity for the "relative linear displacement" of the link member ends, and the nodes cannot effectively release the bending restraint on the rod member ends.

[0007] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a dual shear damper structure and a tightly coupled node.

[0008] In order to solve the above technical problems, the present invention provides the following technical solution: The structure and tight-contact node of the two-stage shear damper comprises a total of six components, including a first hinge point, a single-stage wedge link mechanism, a second hinge point, a two-stage wedge link mechanism, a third hinge point, and a fluid viscous damper, and the two-stage wedge link mechanism is composed of four small links of the same length connected by hinges.

[0009] In a preferred solution for the structure and tight node of the double-shear damper of the present invention, the first hinge point includes an end node plate group and two first rolling wedge tight hinge points, the end node plate group includes two node plates that match the shape of the side walls of the first rolling wedge tight hinge point, an inclined cross-section hole connecting plate, and a number of reinforcing ribs, the two node plates are orthogonally welded to form an L-shaped node plate group, the inclined cross-section hole connecting plate is hingedly connected to the first rolling wedge tight hinge point, and there are four reinforcing ribs, a large link is provided on the inclined cross-section hole connecting plate, and the four large links of the same length are combined to form a wedge-shaped link mechanism, and both ends of the four large links are connected to the first hinge point and the second hinge point, respectively.

[0010] As a preferred solution of the structure and tight node of the double shear damper of the present invention, the second hinge point comprises a first rolling wedge tight hinge point and a second rolling wedge tight hinge point, the first rolling wedge tight hinge point is connected to the large link, and the second rolling wedge tight hinge point is connected to the small link.

[0011] As a preferred solution of the structure and tight node of the double shear damper of the present invention, both ends of each of the small links are connected to the second hinge point and the third hinge point, respectively.

[0012] As a preferred solution of the structure and tight node of the double shear damper of the present invention, said third hinge point comprises two second rolling wedge tight hinge points and a lug connected to the fluid viscous damper.

[0013] As a preferred solution of the structure and tight node of the double-shear damper of the present invention, both ends of the fluid viscous damper are respectively connected to the third hinge point.

[0014] As a preferred solution of the structure and tight node of the double shear damper of the present invention, a first rolling wedge tight hinge point is provided on the first hinge point, the second hinge point and the third hinge point, respectively.

[0015] As a preferred solution of the structure and tight node of the double shear damper of the present invention, the first rolling wedge tight hinge point includes a pin shaft, a nut-washer combination, a rolling wedge, an inclined cross-section hole node plate, and a conversion transmission plate.

[0016] In the preferred solution of the double shear damper structure and tightly coupled nodes of the present invention, the pin shaft is a steel cylinder with standard pre-threaded screws on both ends, and the pin shaft connects each node plate in series, which are connected by the first rolling wedge tightly coupled hinge point.

[0017] As a preferred solution for the structure and tight node of the double shear damper of the present invention, the nut-washer combination includes a nut, a large diameter washer, and a small diameter washer, the nut is a hexagonal nut with a standard hexagonal screw hole in the center, one side of the large diameter washer is tightly attached to the bottom surface of the nut, one side of the small diameter washer is tightly attached to the guide groove annular wedge, and the other side is tightly attached to the large diameter washer and the small diameter washer, and the large diameter washer and the small diameter washer are fitted together.

[0018] In the preferred solution of the structure and tight-contact node of the double-shear damper of the present invention, the rolling wedge includes a guide groove annular wedge, a support bracket, and a cylindrical roller; the guide groove annular wedge is provided with an annular guide groove to accommodate the support bracket, the annular guide groove restricts the irregular displacement of the cylindrical roller; the cross section of the guide groove annular wedge has a slotted pier-shaped wedge; the pier-shaped cross section includes two parts: a wedge portion and a pier-shaped portion; the wedge portion has the shape of an elongated triangular pyramid, gradually thickening from the first end to the last end; the pier-shaped portion is trapezoidal and smoothly transitions to the last end of the wedge portion; the cylindrical roller is made of a number of identical steel cylindrical spheres, the cylindrical roller is mounted within the support bracket, the support bracket uniformly separates the multiple cylindrical rollers, the cylindrical rollers are rotatable within the support bracket, and the cylindrical roller-support bracket combination is embedded in the annular guide groove.

[0019] As a preferred solution for the structure and tight-fitting node of the double-shear damper of the present invention, the inclined cross-section hole node plate includes a plate body and an inclined cross-section circular hole, a through-hole is provided in the center of the plate body, and the inner wall of the inclined cross-section circular hole is an inclined surface that matches the shape of the side wall of the guide groove annular wedge.

[0020] As a preferred solution of the structure and tight-fitting node of the double shear damper of the present invention, the conversion transmission plate is a normal steel structural node plate member, and the conversion transmission plate is connected to the inclined cross-section hole node plate. [Effects of the Invention]

[0021] The two-stage shear damper structure and tight-fitting nodes of this invention have the following beneficial effects: The single-stage and double-stage wedge link mechanisms provide strong constraints on the "relative linear displacement" of the link member ends, and the first, second, and third hinge points allow the node bending constraint to be released, solving the problem that shear damper connections do not provide strong constraints on the "relative linear displacement" of the link member ends, making it difficult for the node to fully release the bending constraint on the rod member ends. [Brief explanation of the drawings]

[0022] In order to more clearly describe the technical solutions of the embodiments of the present invention, the accompanying drawings that need to be used in the description of the embodiments are briefly described below. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these accompanying drawings without any creative work. [Figure 1] 1 is a schematic diagram of a two-stage shear damper of the present invention. [Figure 2] FIG. 2 is an enlarged schematic view of the first hinge point of the present invention. [Figure 3] FIG. 10 is an enlarged schematic view of a second hinge point of the present invention. [Figure 4] FIG. 10 is an enlarged schematic view of the third hinge point of the present invention. [Figure 5] FIG. 2 is an exploded schematic view of each component of the first hinge point of the present invention. [Figure 6] FIG. 1 is a schematic diagram of a rolling wedge tight hinge point of the present invention. [Figure 7] 1 is a schematic diagram of a rolling wedge according to an embodiment of the present invention; [Figure 8] 1 is a flowchart of an assembly process for a dual-shear damper according to an embodiment of the present invention. [Figure 9] FIG. 1 is a schematic diagram illustrating the use of a dual-shear damper according to an embodiment of the present invention in an inter-story energy dissipation connection within a structure. [Figure 10]FIG. 1 is a schematic diagram illustrating the use of a dual-shear damper according to an embodiment of the present invention in an energy dissipative connection between adjacent building structures. [Figure 11] 1 is a schematic diagram illustrating the use of a dual-shear damper according to an embodiment of the present invention in an energy dissipating connection between a large roof and the ground. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0023] In order to make the above objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings in the specification.

[0024] Although numerous specific details are set forth in the following description to facilitate understanding of the present invention, the present invention may be embodied in other forms different from those described herein, and those skilled in the art will be able to implement similar enhancements without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific examples disclosed below.

[0025] Also, the term "one embodiment" or "embodiment" herein refers to a particular feature, structure, or characteristic that may be included in at least one embodiment of the present invention. The appearances of the phrase "in one embodiment" in various places in this specification do not always refer to the same embodiment, nor do they refer to an embodiment that is separate or alternatively mutually exclusive from other embodiments.

[0026] Example 1 Referring to Figs. 1 to 11, a first embodiment of the present invention provides a structure of a two-stage shear damper and a tight-fitting node, which includes: The device comprises a total of six components: a first hinge point 1, a single-stage wedge link mechanism 2, a second hinge point 3, a two-stage wedge link mechanism 4, a third hinge point 5, and a fluid viscous damper 6. The two-stage wedge-shaped link mechanism 4 is made up of four small links 41 of the same length connected by hinges. The first hinge point 1 includes an end node plate group 11 and two novel first rolling wedge contact hinge points 12, where the end node plate group 11 includes two node plates 111, an inclined cross-section hole connecting plate 112, and a number of reinforcing ribs 113. The inner wall of the inclined cross-section hole connecting hole is an inclined surface, which matches the side wall shape of the first rolling wedge contact hinge point 12. The two node plates 111 are orthogonally welded to form an L-shaped node plate group, and the inclined cross-section hole connecting plate 112 is welded onto the L-shaped node plate group, and then a number of The reinforcing ribs 113 are welded, where the L-shaped node plate group is used to connect various building structures, and the inclined cross-section hole connecting plate 112 is hingedly connected to the first rolling wedge contact hinge point 12. In this embodiment of the present invention, there are four reinforcing ribs 113, which are used to reinforce the end node plate group 11. The single-stage wedge-shaped link mechanism 2 of the inclined cross-section hole connecting plate 112 is composed of four large links 21 of the same length hingedly connected, and both ends of each large link 21 are respectively connected to the first hinge point 1 and the second hinge point 3. The second hinge point 3 includes four novel rolling wedge contact hinge points 31, 32, wherein the novel rolling wedge contact hinge point 31 numbered 31 is connected to the single-stage wedge link 21, and the novel rolling wedge contact hinge point 32 numbered 32 is connected to the double-stage wedge link 41; The two-stage wedge-shaped link mechanism 4 is composed of four small links 41 of the same length connected by hinges, and both ends of each small link 41 are connected to the second hinge point 3 and the third hinge point 5, respectively. The third hinge point 5 includes two novel second rolling wedge contact hinge points 51 and lugs 52 connected to a fluid viscous damper 6; Both ends of the fluid viscous damper 6 are connected to the third hinge point 5, The structure and assembly method of the novel rolling wedge contact hinge points included in the first hinge point 1, the second hinge point 3 and the third hinge point 5 are all the same.

[0027] The novel first rolling wedge contact hinge point 12 includes a pin shaft 121, a nut-washer combination 122, a rolling wedge 123, a sloped cross-section hole node plate 124, and a conversion transmission plate 125; The pin shaft 121 is a steel cylinder with standard pre-threaded threads on both ends, connecting each node plate of the novel rolling wedge tight hinge point connection in series; The nut-washer combination 122 includes a nut 122-1, a large diameter washer 122-2, and a small diameter washer 122-3. The nut 122-1 is a hexagonal nut with a standard hexagonal screw hole in the center. One side of the large diameter washer 122-2 is tightly attached to the bottom surface of the nut 122-1. One side of the small diameter washer 122-3 is tightly attached to the guide groove annular wedge 123-1. The other side is tightly attached to the large diameter washer 122-2 and the small diameter washer 122-3. The large diameter washer 122-2 and the small diameter washer 122-3 are fitted together to ensure smooth transmission of fastening force. The rolling wedge 123 includes a guide groove annular wedge 123-1, a support bracket 123-2, and a cylindrical roller 123-3. The guide groove annular wedge 123-1 is provided with an annular guide groove for accommodating the support bracket 123-2. The annular guide groove limits the irregular displacement of the cylindrical roller 123-3. The cross section of the guide groove annular wedge 123-1 is in the shape of a slotted pier wedge. The pier wedge cross section includes two parts: a wedge portion and a pier head portion. The wedge portion has the shape of an elongated triangular pyramid, and is gradually thickened from the first end to the last end. The pier head portion The section is trapezoidal and smoothly transitions to the final end of the wedge section, the cylindrical roller 123-3 includes a number of identical steel cylindrical balls, the cylindrical roller 123-3 is mounted within the holding bracket 123-2, the holding bracket 123-2 uniformly separates the multiple cylindrical rollers, the cylindrical roller 123-3 is rotatable within the holding bracket, the combination of the cylindrical roller 123-3 and the holding bracket 123-2 is embedded in an annular guide groove, and the combination of the cylindrical roller and the holding bracket can roll smoothly in the corresponding annular guide groove, The inclined cross-section hole node plate 124 includes a plate body 124-1 and an inclined cross-section circular hole 124-2. The plate body 124-1 is a normal steel structural plate with a through-hole in the center. The inner wall of the inclined cross-section circular hole 124-2 is an inclined surface, which matches the shape of the side wall of the guide groove annular wedge 123-1. The conversion transmission plate 125 is a normal steel structural node plate member, which is connected to the inclined cross section hole node plate.

[0028] Regarding the assembly method of the novel rolling wedge contact hinge point, the first hinge point will be taken as an example, but the assembly methods for the second and third hinge points are similar.

[0029] The support bracket 123-2 is first embedded in the annular guide groove, and the cylindrical rollers 123-3 are embedded in the support bracket 123-2. Each cylindrical roller 123-3 is then checked one by one to see whether it can rotate freely within the support bracket, and whether the cylindrical roller-support bracket combination can roll freely in the annular guide groove. The pin shaft 121 is then inserted into the inclined cross-section circular hole 124-2 of the first inclined cross-section hole node plate 124. Rolling wedges 123 are symmetrically inserted between the pin shaft 121 and the hole wall of the inclined cross-section circular hole 124-2. The rolling wedges 123 are designed to be in line contact with the pin shaft 121, thereby avoiding stress concentration problems caused by contact between the cylindrical rollers 123-3 and the pin shaft 121. Similarly, the pin shaft 121 is passed through the inclined cross-section hole connecting plate 112 and the second inclined cross-section hole node plate 124 in the end node plate group 11, and the rolling wedge 123 is inserted. If there are two or more inclined cross-section hole node plates 124, the rolling wedge 123 is also inserted in the same manner. Then, the nut-washer combination 122 is tightened to achieve a tight fit between the pin shaft 121, the rolling wedge 123, the end node plate group 11, and the inclined cross-section hole node plate 124. This satisfies the strong constraint requirement for the relative linear displacement of the ends of the rod members using the novel rolling wedge tight hinge point. Finally, the inclined cross-section hole node plate 124 and the conversion transmission plate 125 are welded together.

[0030] Example 2 The second embodiment of the present invention differs from the first embodiment in that the second embodiment provides an assembly method, which includes the following steps:

[0031] S1: According to a practical engineering application scenario, determine the reliable positions of the first hinge points 1 at both ends of the novel two-stage shear damper and weld them to concrete structural members via the end node plates 11 of the first hinge points 1.

[0032] S2: First, draw an arc with the first hinge point 1 on the left side as the center and the length of the first link 21 as the radius, then draw an arc with the first hinge point 1 on the right side as the center and the length of the first link 21 as the radius, and find the two intersection points above and below where the two arcs intersect, i.e., the positions of the two second hinge points 3.

[0033] After determining the positions of the two first hinge points 1 and the two second hinge points 3, the assembly of the first hinge point 1, the single-stage wedge link mechanism 2, and the second hinge point 3 is completed in sequence. The first hinge point 1 and the second hinge point 3 all adopt the novel rolling wedge contact hinge point, and the assembly steps can be performed by referring to the assembly method of the novel rolling wedge contact hinge point. S3: The two second hinge points 3 determined in step S2 are set as the two end points of the internal small movable quadrilateral support frame.

[0034] First, an arc is drawn with the upper second hinge point 3 as its center and the length of the small link 41 as its radius, and then another arc is drawn with the lower second hinge point 3 as its center and the length of the two-stage link 41 as its radius, and the two arcs intersect to find the two intersections on the left and right, i.e., the positions of the two third hinge points 5.

[0035] After determining the positions of the two third hinge points 5, the two-stage wedge linkage 44 and the small links 41 are assembled to the third hinge points 5. The two third hinge points 5 are all rolling wedge contact hinge points, and the assembly method is the same as that of the first and second hinge points 1 and 3. For specific steps, please refer to the assembly method of the new rolling wedge contact hinge point above. S4: A fluid viscous damper 6 is installed between the two third hinge points 5 determined in S3.

[0036] Since there may be errors or assembly errors in both steps S2 and S3, there will be an error between the actual distance and the theoretical distance of the two third hinge points 5, and this error can be eliminated by adjusting the initial position of the piston in the cylinder.

[0037] It should be noted that the structure and arrangement of the present application as illustrated in several different exemplary embodiments are merely exemplary. While only a few embodiments have been described in detail in this disclosure, those reading the contents of this disclosure will recognize that numerous modifications are possible without departing from the novel teachings and advantages of the subject matter described herein (e.g., variations in the size, scale, structure, shape, and proportions of each component, as well as parameters (e.g., temperature, pressure, etc.), mounting arrangements, material use, color, orientation, etc.). For example, a single-piece component may be composed of multiple parts or components, the position of components may be reversed or otherwise altered, and the nature, number, or location of separate components may be altered or varied. Accordingly, all such modifications are intended to be within the scope of the present invention. The order or sequence of any process or method steps may be varied or rearranged according to alternative embodiments. In the claims, the term "apparatus plus function" is intended to cover structures that perform the functions described herein that are not only structurally equivalent but also structurally equivalent. Other substitutions, modifications, changes, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, it is intended that the present invention not be limited to a particular embodiment, but that it cover many modifications that will still fall within the scope of the appended claims.

[0038] Furthermore, in order to provide a concise description of exemplary embodiments, it is possible not to describe all of the features of an actual embodiment (i.e., features that are not relevant to the currently best mode of carrying out the invention or that are not relevant to the implementation of the invention).

[0039] It should be understood that numerous specific embodiment decisions may be made during the process of developing an actual embodiment, such as any engineering or design project. While such a development effort might be complex and time-consuming, for those of ordinary skill in the art having the benefit of this disclosure, it will nevertheless be a routine undertaking of design, manufacturing, and production without undue experimentation.

[0040] Furthermore, the above embodiments are only for illustrating the technical solutions of the present invention, and are not intended to be limiting. Although the present invention has been described in detail with reference to preferred embodiments, it should be understood by those skilled in the art that any modifications or equivalent replacements made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention shall all fall within the scope of the claims of the present invention.

Claims

1. The vehicle comprises six components in total: a first hinge point (1), a single-stage wedge link mechanism (2), a second hinge point (3), a two-stage wedge link mechanism (4), a third hinge point (5), and a fluid viscous damper (6); The two-stage wedge-shaped link mechanism (4) is made up of four small links (41) of the same length connected by hinges, The first hinge point (1) includes an end node plate group (11) and two first rolling wedge contact hinge points (12), the end node plate group (11) includes an inclined cross-section hole connecting plate (112), the inclined cross-section hole connecting plate (112) is hingedly connected to the first rolling wedge contact hinge point (12), a large link (21) is provided on the inclined cross-section hole connecting plate (112), four of the large links (21) of the same length are combined to form the single-stage wedge link mechanism (2), both ends of the four large links (21) are connected to the first hinge point (1) and the second hinge point (3), respectively; The second hinge point (3) comprises a first rolling wedge solid hinge point (31) and a second rolling wedge solid hinge point (32), the first rolling wedge solid hinge point (31) being connected to the large link (21) and the second rolling wedge solid hinge point (32) being connected to the small link (41); Each of the small links (41) has two ends connected to a second hinge point (3) and a third hinge point (5), respectively; the third hinge point (5) includes a lug (52) connected to a fluid viscous damper (6); Both ends of the fluid viscous damper (6) are connected to the third hinge point (5), The end node plate group (11) includes two node plates (111) that match the shape of the side walls of the first rolling wedge contact hinge point (12) and a plurality of reinforcing ribs (113); The two node plates (111) are orthogonally welded to form an L-shaped node plate group; The reinforcing ribs (113) are four in number, The structure and the tightly-contacted node of the two-stage shear damper are characterized in that the first rolling wedge tightly-contacted hinge point (12) includes a pin shaft (121), a nut-washer combination (122), a rolling wedge (123), an inclined cross-section hole node plate (124), and a conversion transmission plate (125).

2. The structure and close node of a two-stage shear damper according to claim 1, characterized in that the third hinge point (5) comprises two second rolling wedge close hinge points (51).

3. The structure and close node of a two-stage shear damper according to claim 2, characterized in that the first rolling wedge close hinge point (12) is provided on the first hinge point (1), the second hinge point (3), and the third hinge point (5), respectively.

4. 2. The structure and close-coupled node of a two-stage shear damper according to claim 1, wherein the pin shaft (121) is a steel cylinder with standard pre-threaded threads on both ends, and the pin shaft (121) connects each node plate connected by the first rolling wedge close-coupled hinge point (12) in series.

5. 5. The structure and sealing node of a two-stage shear damper according to claim 4, wherein the nut-washer combination (122) comprises a nut (122-1), a large diameter washer (122-2), and a small diameter washer (122-3), wherein the nut (122-1) is a hexagonal nut with a standard hexagonal screw hole in the center, one side of the large diameter washer (122-2) is tightly fitted to the bottom surface of the nut (122-1), one side of the small diameter washer (122-3) is tightly fitted to a guide groove annular wedge (123-1), and the other side is tightly fitted to the large diameter washer (122-2) and the small diameter washer (122-3), and the large diameter washer (122-2) and the small diameter washer (122-3) are fitted together.

6. The rolling wedge (123) includes a guide groove annular wedge (123-1), a holding bracket (123-2), and a cylindrical roller (123-3). The guide groove annular wedge (123-1) is provided with an annular guide groove for accommodating the holding bracket (123-2). The annular guide groove limits the irregular displacement of the cylindrical roller (123-3). The cross section of the guide groove annular wedge (123-1) has a slotted lance wedge shape. The cross section of the lance wedge shape includes two parts: a wedge portion and a lance head. The wedge portion has the shape of an elongated triangular pyramid, and is gradually thicker from the first end to the last end.

6. The structure and sealing node of a two-stage shear damper as claimed in claim 5, characterized in that the head of the bar is trapezoidal and smoothly transitions to the final end of the wedge section, the cylindrical roller (123-3) is made of a number of identical steel cylindrical balls, the cylindrical roller (123-3) is installed in the support bracket (123-2), the support bracket (123-2) uniformly separates the multiple cylindrical rollers, the cylindrical roller (123-3) is rotatable within the support bracket, and the combination of the cylindrical roller (123-3) and the support bracket (123-2) is embedded in the annular guide groove.

7. The structure and the sealed node of the two-stage shear damper according to claim 6, characterized in that the inclined cross-section hole node plate (124) comprises a plate body (124-1) and an inclined cross-section circular hole (124-2), a through-circular hole is provided in the center of the plate body (124-1), and the inner wall of the inclined cross-section circular hole (124-2) is an inclined surface, which matches the shape of the side wall of the guide groove annular wedge (123-1).

8. The structure and tight-fitting node of the two-stage shear damper as described in claim 1, characterized in that the conversion transmission plate (125) is a normal steel structural node plate member, and the conversion transmission plate is connected to an inclined cross-section hole node plate.

Images