Patent Grant
12188256
The invention relates to the technical field of construction engineering, and specifically to configurations and close-fitting joints for a second-order scissor damper and an assembly method for the same.
Along with the increasingly prominent characteristics of modern architectural structures such as “tall, lightweight, and flexible,” the demands for vibration control of building structures under dynamic loads such as wind loads, seismic actions, environmental/equipment excitations, and human-induced excitations have become more pronounced. For now, the scissor damper stroke amplification device is considered one of the most comprehensive and reliable approaches.
The scissor damper (energy dissipater) has a basic configuration of “4 rods plus 1 damper” arranged in a shuttle shape, which efficiently converts inter-story displacements of the building structure into axial strokes of the damper. However, the connections of the structure equipped with scissor damper (SDJ) and the connections between internal components of the scissor damper commonly use pin-type articulated connections, in which such connection type faces two major issues:
Firstly, the connection lacks strong constraint capability for the “relative linear displacement” of the connected components' ends. Specifically, due to the limitations in processing and installation precision, the currently used pin-type articulated joints in the field of building structures exhibit the feature of “pin diameter smaller than hole diameter of gusset plate”. When there is a relative linear displacement trend between the ends of two or more components connected by a joint, the gap between the pin and the connecting plate will cause the joint to be unable to effectively constrain the relative linear displacement between the components. This causes a (large) part of the structural deformation to be eliminated between the joint pin and the hole wall, unable to be transmitted and converted into the deformation stroke of the energy dissipater. Macroscopically, this phenomenon manifests as insensitivity of the energy dissipater and its connecting components to small-scale vibrational deformations of the building structure, compromising the efficiency of vibration control.
Secondly, the joint is difficult to completely release its bending constraint on the ends of the components. Specifically, the contact between the pin and the gusset plate can lead to a nonzero starting torque between them, making it challenging to ensure the axial tension/compression state of the energy dissipater (resulting in a pull-bend/compression-bend state).
In view of the problems in the above-mentioned prior art that the scissor damper connection does not have the strong ability to constrain the “relative linear displacement” of the ends of the connected rods and that the joints are difficult to completely release their bending constraints on the ends of the rods, the present invention is provided accordingly.
Therefore, the object of the present invention is to provide a configuration and close-fitting joints for a second-order scissor damper.
To solve the above technical problems, the present invention provides the following technical solutions, including totally six parts with first hinge joints, a first-order shuttle-shaped linkage mechanical component, second hinge joints, a second-order shuttle-shaped linkage mechanical component, third hinge joints, and a viscous damper; the second-order shuttle-shaped linkage mechanical component includes four small connecting rods with equal length and it is formed by hinging them together.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: the first hinge joint includes an end gusset plate group and two first rolling annular wedge close-fitting hinge joints; where, the end gusset plate group includes two gusset plates, a connecting plate with oblique cut holes, and several stiffening ribs which match a shape of sidewalls of the first rolling annular wedge close-fitting hinge joints; where the two gusset plates are orthogonally welded to form an L-shaped gusset plate group, the connecting plate with oblique cut holes is hinged with the first rolling annular wedge close-fitting hinge joints, the number of the stiffening ribs is four, the connecting plate with oblique cut holes is provided with large connecting rods, the four large connecting rods with equal length are combined into the first-order shuttle-shaped linkage mechanical component, and both ends of each of the four large connecting rods are connected to the first hinge joint and the second hinge joint, respectively.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: the second hinge joint includes a first rolling annular wedge mating hinge joint and a second rolling annular wedge mating hinge joint. The first rolling annular wedge mating hinge joint is connected to the large connecting rods, and the second rolling annular wedge mating hinge joint (32) is connected to the small connecting rods.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: each of the small connecting rods has both ends connected to the second hinge joint and the third hinge joint, respectively.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: the third hinge joint includes two second rolling annular wedge mating hinge joints and an ear plate connected to the viscous damper.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: the viscous damper has both ends connected to the third hinge joints, respectively.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: each of the first hinge joints, the second hinge joints, and the third hinge joints is provided with the first rolling annular wedge close-fitting hinge joints thereon.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which the first rolling annular wedge close-fitting hinge joint includes: a pin shaft, a nut-washer combination component, a rolling annular wedge, an oblique-hole gusset plate, and a conversion transfer board.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: the pin shaft is a steel cylinder with standard threads pre-cut at both ends thereof, and the pin shaft connects each of gusset plates linked by the first rolling annular wedge close-fitting hinge joints in series.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: the nut-washer combination component includes: a nut, a large diameter washer, and a small diameter washer; where, the nut is a hexagonal nut with a standard hexagonal threaded hole in the center; where, one side of the large diameter washer abuts against a bottom surface of the nut; where, one side of the small diameter washer abuts against a guiding-groove annular wedge; where, on another side, the large diameter washer and the small diameter washer abut against each other; where, the large diameter washer and the small diameter washer are matched.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: the rolling annular wedge includes the guiding-groove annular wedge, a retaining frame, and cylindrical rollers; where, the guiding-groove annular wedge has an annular guiding-groove for accommodating the retaining frame; where, the annular guiding-groove restricts irregular displacement of the cylindrical rollers; where, a cross-section of the guiding-groove annular wedge is in a slotted pedestal wedge shape, and the slotted pedestal wedge shape includes a wedge part and a pedestal part; where, the wedge part is in a shape of an elongated triangular pyramid, gradually becoming thicker from a head end to a tail end; where, the pedestal part is trapezoidal and smoothly transitions from a rear end of the wedge part; where, the cylindrical rollers include several identical steel cylindrical balls; where, the cylindrical rollers are set inside the retaining frame, and the several cylindrical rollers are evenly spaced by the retaining frame; where, the cylindrical rollers are able to rotate within the retaining frame; where, a combination of the cylindrical rollers and the retaining frame is embedded in the annular guiding-groove.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: the oblique hole gusset plate includes a plate body and an oblique-section circle-hole; where, a middle part of the plate body is provided with a through hole; where, an inner wall of the oblique-section circle-hole is an inclined surface, which matches a shape of a sidewall of the guiding-groove annular wedge.
As a preferred solution for the configuration and the close-fitting joints for the second-order scissor damper of the present invention, in which: the conversion transfer plate is an ordinary steel structure joint plate, and the conversion transfer plate is connected to an oblique-section gusset plate.
The configuration and the close-fitting joints for the second-order scissor damper of the present invention have advantages as follows: by setting the first-order shuttle-shaped linkage mechanical component and the second-order shuttle-shaped linkage mechanical component, the “relative linear displacement” of the end of the connecting rod can be strongly constrained. And, by setting the first hinge joints, the second hinge joints, and the third hinge joints, it can release the bending constraints of joints, thereby solving the problem that the scissor damper connection does not have the strong constraint capability of the “relative linear displacement” of the ends of the connected rods and that the joints are difficult to completely release their bending constraints on the ends of the rods.
To provide a clearer explanation of the technical solution of the embodiments of the present invention, a brief introduction to the drawings required in the description of the embodiments will be made below. It is clear that the drawings in the following description are only for some embodiments of the present invention; for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.
In order to make the above objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can do similar popularizing without departing from the connotation of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Second, reference herein to “one embodiment” or “an embodiment” refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The appearances of “in one embodiment” in different places in this specification do not all refer to the same embodiment, nor are they separate or selectively mutually exclusive with other embodiments.
Referring to
The novel rolling annular wedge close-fitting hinge joint 12 includes a pin shaft 121, a nut-washer combination components 122, rolling annular wedges 123, oblique-hole gusset plates 124, and a conversion transfer board 125;
The assembly method of the novel rolling annular wedge close-fitting hinge joint is as follows: taking the first hinge joints as an example, the assembly method of the second and third hinge joints is the same as such the example.
The retaining frame 123-2 is embedded into the annular guiding-groove in advance, then the cylindrical rollers 123-3 are embedded into the retaining frame 123-2 with checking one by one whether each cylindrical roller 123-3 can rotate without resistance in the retaining frame, and whether the cylindrical rollers in combination with the retaining frame can roll without resistance in the annular guiding-groove; the pin shaft 121 is passed through the oblique-section circle-hole 124-2 of the first oblique hole gusset plate, and the rolling annular wedge 123 is inserted symmetrically between the pin 121 and the hold wall of the oblique-section circle-hole 124-2. The rolling annular wedge 123 and the pin shaft 121 are designed to achieve line contact, which avoids the stress concentration problem that may be caused when the cylindrical roller 123-3 contacts the pin shaft 121; similarly, the pin shaft 121 is passed through the connecting plate 112 with the oblique holes and the second oblique hole gusset plate 124 in the end gusset plate group 11 in sequence, and then the rolling annular wedge 123 is inserted thereto; if there are more than two oblique hole gusset plates 124, it is to insert the rolling annular wedge 123 according to the above manner; thereafter, it is to tighten the nut-washer combination component 122 to realize the close fitting between the pin shaft 121 in combination with the rolling annular wedge 123 having one end and the gusset plate group 11 in combination with the oblique hole gusset plates 124, so as to comply with the strong constraint requirements of the novel rolling annular wedge close-fitting hinge joint on the relative linear displacement of the rod end; finally, the oblique hole gusset plate 124 and the conversion transfer plate 125 are welded into one body.
The following is a second embodiment of the present invention. Different from the previous embodiment, this embodiment provides an assembly method, which includes;
S1: Based on actual engineering application scenarios, determining the exact positions of the first hinge joints 1 at both ends of the novel second-order scissor damper, and welding them to a specific structural component through the end gusset plate groups 11 of the first hinge joints 1.
S2: First, using the first hinge joint 1 on the left as the center of the circle, and using the length of the first-order connecting rod 21 as the radius to make a circle; then using the first hinge joint 1 on the right as the center of the circle, and using the length of the first-order connecting rod 21 as the radius to make a circle; intersecting the two circles to obtain the upper and lower intersection points, which are the positions of the two second hinge joints 3.
After determining the positions of the two first hinge joints 1 and the two second hinge joints 3, the assembly of the first hinge joints 1, the first-order shuttle-shaped linkage mechanical component 2, and the second hinge joints 3 can be completed in sequence. The first hinge joints 1 and the second hinge joints 3 both adopt novel rolling annular wedge close-fitting hinge joints, in which the assembly steps refer to the assembly method of the novel rolling ring wedge close-fitting hinge joint;
S3: The two second hinge joints 3 determined in the second step S2 are the two ends of the internal small movable quadrilateral support frame.
And, first, using the second hinge joint 3 on the top as the center of the circle, and using the length of the small connecting rod 41 as the radius to make a circle; then using the second hinge joint 3 on the bottom as the center of the circle, and using the length of the second-order connecting rod 41 as the radius to make a circle; intersecting the two circles to obtain the left and right intersection points, which are the positions of the two third hinge joints 5.
After determining the positions of the two third hinge joints 5, the assembly of the four small connecting rods 41 of the second-order shuttle-shaped linkage mechanical component and the third hinge joints 5 can be completed in sequence. The two third hinge joints 5 both adopt novel rolling annular wedge close-fitting hinge joints, which is identical with that of the first hinge joints 1 and the second hinge joints 3; the specific steps refer to the performed assembly method of the novel rolling annular wedge close-fitting hinge joint as above;
S4: Installing the viscous damper 6 between the two third hinge points 5 determined in the third step S3.
Since there may be production errors and assembly errors in the second step S2 and the third step S3, there is an error between the actual distance and the theoretical distance between the two third hinge joints 5. Such the error can be eliminated by adjusting the initial position of the piston in the cylinder.
It is important to note that the construction and arrangements of the present application shown in various exemplary embodiments are illustrative only. Although only a few embodiments are described in detail in this disclosure, those reviewing this disclosure will readily appreciate that many modifications are possible without materially departing from the novel teachings and advantages of the subject matter described in this application (e.g. the size, scale, structure, shape and proportion of various components, as well as parameter values (for example, temperature, pressure, etc.), installation arrangement, use of materials, color, orientation changes, etc.). For example, an element shown as integrally formed may be constructed from multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claim scope, any “means-plus-function” clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. 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 invention. Therefore, the present invention is not limited to particular embodiments, but extends to various modifications which still fall within the scope of the appended claims.
Furthermore, in order to provide a concise description of the exemplary embodiments, not all features of an actual implementation are described (i.e., those features which are not relevant to the best mode presently contemplated for carrying out the invention, or which are not relevant to the practice of the invention).
It is understood that numerous implementation-specific decisions may be made during the development of any actual implementation, as in any engineering or design project. Such a development effort might be complex and time consuming, but would be a routine undertaking of design, manufacture and production without undue experimentation to those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art will understand that the technical solutions of the present invention can be modified or equivalently substituted without departing from the spirit and scope of the technical solutions of the present invention, which should all be covered by the scope of the claims of the present invention.
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