A self-centering torsional energy dissipation support member with nonlinear stiffness

Abstract

The application relates to a self-resetting torsional energy dissipation support component with nonlinear stiffness, belonging to the technical field of energy dissipation and shock absorption, which comprises an outer sleeve and an inner sleeve which are mutually sleeved, a plurality of torsional steel pipes are arranged in the inner sleeve cavity, rotating discs are fixed at the two ends of the torsional steel pipes, upper and lower core plates which are slidably connected and are used in cooperation with the rotating discs are arranged on the inner sleeve body, support connecting pieces are fixed at the ends of the upper and lower core plates away from the inner sleeve, a plurality of self-resetting spring assemblies are symmetrically arranged in the inner sleeve cavity away from the two ends of the torsional steel pipes, a pair of curve grooves are symmetrically arranged in the center of the rotating discs, struts which are used in cooperation with the curve grooves are arranged on the upper and lower core plates, during work, the upper and lower core plates move towards or away from each other, the rotating discs rotate, the rotating directions of the rotating discs on the two sides of the inner sleeve are opposite during work, the torsional steel pipes are twisted, the metal of the torsional steel pipes is deformed to dissipate energy, meanwhile, the self-resetting spring assemblies are stretched to provide nonlinear restoring force.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of energy dissipation and vibration reduction, and relates to a self-resetting torsional energy dissipation support component with nonlinear stiffness. BACKGROUND

[0002] Energy dissipation and vibration reduction technology adds an additional energy dissipation and vibration reduction device at a position where relative movement of a structure occurs, so that when the structure is subjected to the action of an earthquake or wind vibration, the damper generates resistance to the relative movement of the structure under the forced action of the relative movement of the structure, thereby reducing the dynamic response of the structure itself by using the energy dissipation effect of the additional vibration reduction device, and ensuring the safety, comfort and normal use of the structure.

[0003] However, the existing energy dissipation and vibration reduction device has a single energy dissipation mode and an unsatisfactory energy dissipation effect, and cannot provide a nonlinear restoring force. SUMMARY

[0004] Therefore, the application provides a self-resetting torsional energy dissipation support component with nonlinear stiffness to solve the problems of the single energy dissipation mode, the unsatisfactory energy dissipation effect and the inability to provide a nonlinear restoring force of the existing energy dissipation and vibration reduction device.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme.

[0006] The self-resetting torsional energy dissipation support component with nonlinear stiffness comprises an outer sleeve and an inner sleeve which are sleeved with each other, a plurality of torsional steel pipes are arranged in the inner sleeve cavity at the middle position along the length direction of the inner sleeve, rotating discs are fixed at both ends of the torsional steel pipes, a lower core plate and an upper core plate which are slidably connected along the length direction of the inner sleeve and are used in cooperation with the rotating discs are arranged on the inner sleeve body, support connecting pieces are fixed at the ends of the lower core plate and the upper core plate away from the inner sleeve, a plurality of self-resetting spring assemblies are symmetrically arranged in the inner sleeve cavity away from both ends of the torsional steel pipes, a pair of curved grooves are symmetrically arranged at the center of the rotating discs, and support columns which are used in cooperation with the curved grooves are arranged on the upper core plate and the lower core plate.

[0007] The beneficial effects of the basic scheme are as follows: when subjected to vibration, the upper core plate and the lower core plate move towards or away from each other, the support columns of the upper core plate and the lower core plate are constrained by the curved grooves, when the support columns move towards or away from each other, the rotating discs rotate, the directions of the curved grooves arranged in the rotating discs on both sides of the inner sleeve are opposite, so the rotating directions of the rotating discs on both sides when working are also opposite, pure torsion is generated in the torsional steel pipes fixedly connected with the rotating discs, the metal of the plurality of torsional steel pipes is deformed to dissipate energy, and the self-resetting spring assemblies are stretched to provide a nonlinear restoring force, the energy dissipation and vibration reduction effect is good due to the multiple energy dissipation modes of the torsional steel pipes and the self-resetting spring assemblies.

[0008] Further, the self-resetting spring assembly is composed of multiple linear elastic springs, each of which is connected to the inner sleeve at one end and to the upper or lower core plate at the other end.

[0009] Further, the self-resetting spring assembly is in the shape of a regular octahedron, and each spring is arranged in a highly symmetrical skew manner in three-dimensional space and is in a stretched state. Advantageously, after being subjected to a shock, each spring is in a stretched state, and after the support member is subjected to axial tension or compression deformation, some springs are further stretched and some springs are slightly relaxed, so that the support member has a recovery force in both tension and compression directions.

[0010] Further, the skew arrangement is such that the axial direction of each spring intersects the displacement direction of the upper and lower core plates, and the intersection angle changes with the displacement of the upper and lower core plates, so that the component force of the spring in the displacement direction of the upper and lower core plates changes nonlinearly with the intersection angle.

[0011] Further, the inner sleeve has a spring assembly fixing hole adapted to the self-resetting spring assembly, a spring assembly displacement channel used in cooperation with the self-resetting spring assembly, and a torsion steel pipe assembly hole adapted to the torsion steel pipe.

[0012] Further, the self-resetting spring assembly is connected to the inner sleeve by multiple spring fixing members inserted into the spring assembly fixing hole and the spring assembly displacement channel.

[0013] Further, the end of the lower core plate away from the inner sleeve is provided with a connecting bolt plate I adapted to the support connecting member, and the other end of the lower core plate is alternately provided with a support column channel and a support column I, and the middle of the lower core plate is provided with a spring assembly connecting hole I.

[0014] Further, the end of the upper core plate away from the inner sleeve is provided with a connecting bolt plate II adapted to the support connecting member, and the other end of the upper core plate is provided with a support column II used in cooperation with the support column channel, and the middle of the upper core plate is provided with a spring assembly connecting hole II, and the support column II is inserted into the support column channel and is located in the middle of the support column channel in the initial state. Advantageously, by using the support column II and the support column channel in cooperation, the upper and lower core plates move towards or away from each other after being subjected to a shock.

[0015] Further, the spring assembly connecting hole I and the spring assembly connecting hole II are inserted with the same spring fixing member between the spring assembly displacement channel, and in the initial state, the spring assembly connecting hole I and the spring assembly connecting hole II are located directly above the middle of the spring assembly displacement channel.

[0016] Further, the support column I and the support column II are respectively inserted into the left and right curved channels of the rotating disc, and are located in the middle of the curved channel in the initial state. Advantageously, by limiting the support column in the curved channel, the rotation of the rotating disc is driven when the upper and lower core plates move.

[0017] Further, the torsion steel pipe assembly hole outer side concentric welding has a circular arc baffle, forming a disc installation groove, the disc installation groove is installed with the rotating disc.

[0018] Further, the rotating disc center concentrically has a large circular hole, the left and right curve grooves are symmetrically arranged on both sides of the large circular hole, and a plurality of bolt holes I are formed on the outer circumference of the large circular hole.

[0019] Further, the torsion steel pipe includes a steel pipe body and flange plates at both ends of the steel pipe body, a plurality of bolt holes II corresponding to the bolt holes I are formed on the flange plates, and a same bolt is inserted into the bolt holes I and the bolt holes II.

[0020] Further, the bolt holes I are axially divided into two layers, the diameters of the upper and lower holes are different, the diameter of the lower hole is matched with the shank of the bolt, and the diameter of the upper hole is matched with the head of the bolt.

[0021] Further, the outer sleeve is composed of a rectangular cylinder body and two rectangular end plates, a rectangular hole matched with the upper and lower core plates is symmetrically formed on each end plate, and the upper and lower core plates penetrate through the rectangular hole.

[0022] The beneficial effects of the present application are that:

[0023] 1. The self-resetting torsion energy dissipation support member with nonlinear stiffness disclosed in the present application, the support column II is inserted into the support column groove and located at the middle part of the support column groove in the initial state, and the support column II is constrained by the support column groove after being vibrated, so that the upper core plate and the lower core plate move towards or away from each other.

[0024] 2. The self-resetting torsion energy dissipation support member with nonlinear stiffness disclosed in the present application, the support column I and the support column II are respectively inserted into the left and right curve grooves and located at the middle part of the curve grooves in the initial state, and the upper and lower core plates move towards or away from each other after being vibrated, the support column I and the support column II are limited and constrained by the curve grooves when the support column I and the support column II move towards or away from each other, the rotating disc generates rotation, the curve grooves on the two sides of the rotating disc of the inner sleeve are opposite in direction, so the rotating directions of the rotating discs on the two sides are opposite when the rotating discs work, pure torsion is generated in the torsion steel pipe fixedly connected with the rotating disc, and the metal deformation of the plurality of torsion steel pipes dissipates energy.

[0025] 3. The self-resetting torsion energy dissipation support member with nonlinear stiffness disclosed in the present application, each spring of the self-resetting spring assembly is symmetrically and diagonally arranged and is in a stretched state, the axial direction of each spring intersects with the displacement direction of the upper and lower core plates, the intersection angle changes with the displacement of the core plates and is not parallel, so that the nonlinear stiffness is realized, and the support member is provided with a nonlinear restoring force.

[0026] Additional advantages, objects, and features of the application will be apparent to those skilled in the art upon examination of the following specification. It is intended that the application be practiced otherwise than as specifically described herein. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to make the objects, technical solutions and advantages of the present application clearer, the preferred embodiments of the present application will be described in detail below with reference to the accompanying drawings, in which:

[0028] Figure 1 Structure diagram of the self-centering torsional energy dissipation support member with nonlinear stiffness of the present application;

[0029] Figure 2 Sectional view of the self-centering torsional energy dissipation support member with nonlinear stiffness of the present application;

[0030] Figure 3 Structure diagram of the self-centering torsional energy dissipation support member with nonlinear stiffness of the present application without outer sleeve;

[0031] Figure 4 Structure diagram of the self-centering torsional energy dissipation support member with nonlinear stiffness of the present application without inner and outer sleeves;

[0032] Figure 5 Middle cross-sectional view of the self-centering torsional energy dissipation support member with nonlinear stiffness of the present application;

[0033] Figure 6 Structure diagram of the inner sleeve of the self-centering torsional energy dissipation support member with nonlinear stiffness of the present application;

[0034] Figure 7 Structure diagram of the rotating disc of the self-centering torsional energy dissipation support member with nonlinear stiffness of the present application;

[0035] Figure 8 Structure diagram of the lower core plate of the self-centering torsional energy dissipation support member with nonlinear stiffness of the present application;

[0036] Figure 9 Structure diagram of the upper core plate of the self-centering torsional energy dissipation support member with nonlinear stiffness of the present application;

[0037] Figure 10 Assembly combination diagram of the upper and lower core plates of the self-centering torsional energy dissipation support member with nonlinear stiffness of the present application;

[0038] Figure 11Assembling combination view of rotating disc, upper core plate and lower core plate in self-resetting torsional energy dissipation support member with nonlinear stiffness of the present application;

[0039] Figure 12 Structural schematic view of torsional steel pipe in self-resetting torsional energy dissipation support member with nonlinear stiffness of the present application;

[0040] Figure 13 Sectional view of self-resetting spring assembly in self-resetting torsional energy dissipation support member with nonlinear stiffness of the present application;

[0041] Figure 14 Structural schematic view of support connecting piece in self-resetting torsional energy dissipation support member with nonlinear stiffness of the present application.

[0042] The figure mark: outer sleeve 1, end plate 11, inner sleeve 2, spring assembly fixing hole 21, spring assembly displacement channel 22, torsional steel pipe assembly hole 23, rotating disc 3, large circular hole 31, curved channel 32, bolt hole I 33, lower core plate 4, connecting bolt plate I 41, support column channel 42, support column I 43, spring assembly connecting hole I 44, upper core plate 5, connecting bolt plate II 51, support column II 52, spring assembly connecting hole II 53, torsional steel pipe 6, steel pipe body 61, flange plate 62, bolt hole II 63, support connecting piece 7, self-resetting spring assembly 8, spring fixing piece 9. DETAILED DESCRIPTION

[0043] The present application is further illustrated by the following specific examples, and other advantages and benefits of the present application will become apparent to those skilled in the art upon consideration of the disclosure. The present application can be implemented or applied in other different specific embodiments, and the details in the present specification can be modified or changed based on different views and applications without departing from the spirit of the present application. It should be noted that the figures provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and the following examples and features in the examples can be combined with each other without conflict.

[0044] Wherein, the figures are only used for exemplary illustration, and the representation is only a schematic diagram, not a physical diagram, and cannot be understood as a limitation of the present application; in order to better illustrate the embodiments of the present application, some components in the figures may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the figures may be omitted.

[0045] The same or similar reference numerals in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", etc. are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.

[0046] As shown in Figures 1-14 , a self-resetting torsional energy dissipation support member with nonlinear stiffness comprises a rectangular outer sleeve 1 and a rectangular inner sleeve 2 that are mutually sleeved, four torsional steel pipes 6 are arranged in the cavity of the inner sleeve 2 at the middle position along the length direction of the inner sleeve 2, a rotating disc 3 is bolted at both ends of each torsional steel pipe 6, a lower core plate 4 and an upper core plate 5 that are slidingly connected and cooperatively used with the rotating disc 3 are arranged along the length direction of the inner sleeve 2, two of the lower core plate 4 and the upper core plate 5 are arranged in parallel, and the ends of the two parallel lower core plate 4 and the upper core plate 5 away from the inner sleeve 2 are fixed with a T-shaped support connecting piece 7, as shown in Figure 14 , two groups of self-resetting spring assemblies 8 are symmetrically arranged in the cavity of the inner sleeve 2 away from both ends of the torsional steel pipe 6, the rectangular outer sleeve 1 is composed of a rectangular outer sleeve barrel and two rectangular end plates 11, a rectangular hole that is matched with the upper and lower core plates is symmetrically formed on each end plate 11, and the upper and lower core plates pass through the rectangular hole during assembly.

[0047] Referring to Figure 6 , the inner sleeve barrel is provided with spring assembly fixing holes 21 matched with the self-resetting spring assemblies 8, spring assembly displacement grooves 22 cooperatively used with the self-resetting spring assemblies 8, and torsional steel pipe assembly holes 23 matched with the torsional steel pipes 6, and the self-resetting spring assemblies 8 are bolted with the inner sleeve 2 through a plurality of spring fixing pieces 9 inserted into the spring assembly fixing holes 21 and the spring assembly displacement grooves 22.

[0048] A circular arc-shaped baffle is concentrically welded outside the torsional steel pipe assembly hole 23 to form a disc mounting groove, and the rotating disc 3 is mounted in the disc mounting groove.

[0049] Referring to Figure 7, the rotating disc 3 is provided with a large circular hole 31 concentric with the center of the rotating disc 3, a pair of curve grooves 32 symmetrical to left and right are arranged on both sides of the large circular hole 31, a plurality of bolt holes I 33 are arranged on the outer circumference of the large circular hole 31, the bolt holes I 33 are axially divided into two layers, the diameters of the upper and lower holes are different, the diameter of the lower hole is matched with the shank of the bolt, and the diameter of the upper hole is matched with the head of the bolt, so that the head of the bolt can be hidden, and the rotating disc 3 is flat without bolt protrusions.

[0050] Referring to Figure 8 , the lower core plate 4 is provided with a connecting bolt plate I 41 matched with the support connecting piece 7 at one end away from the inner sleeve 2, and is alternately provided with a support groove 42 and a support I 43 at the other end, and the lower core plate 4 is provided with a spring assembly connecting hole I 44 in the middle.

[0051] Referring to Figure 9 , the upper core plate 5 is provided with a connecting bolt plate II 51 matched with the support connecting piece 7 at one end away from the inner sleeve 2, and is provided with a support II 52 matched with the support groove 42 at the other end, and is provided with a spring assembly connecting hole II 53 in the middle, the support II 52 is inserted into the support groove 42 and initially located in the middle of the support groove 42, referring to Figure 10 , through the cooperation of the support II 52 and the support groove 42, after being subjected to vibration, the upper core plate 5 and the lower core plate 4 move towards or away from each other.

[0052] Referring to Figure 11 , the supports I 43 and II 52 are respectively inserted into the left and right curve grooves 32 of the rotating disc 3 and initially located in the middle of the curve grooves 32, and the curve grooves 32 limit the supports, so that the rotating disc 3 rotates when the upper and lower core plates move.

[0053] Referring to Figure 12 , the torsion steel pipe 6 includes a steel pipe body 61 and flange plates 62 at both ends of the steel pipe body, a plurality of bolt holes II 63 corresponding to the bolt holes I 33 are arranged on the flange plates 62, the same bolt is inserted into the bolt holes I 33 and the bolt holes II 63, the torsion steel pipe 6 is fixed to the rotating disc 3 through the bolt, when the rotating disc 3 rotates, pure torsion is generated in the torsion steel pipe 6 fixedly connected with the rotating disc 3, and the metal of the four torsion steel pipes 6 is deformed to dissipate energy.

[0054] Referring to 13, the same spring fixing piece 9 is inserted between the spring assembly connecting hole I 44 and the spring assembly connecting hole II 53 and the spring assembly displacement channel 22, and the spring assembly connecting hole I 44 and the spring assembly connecting hole II 53 are located directly above the middle part of the spring assembly displacement channel 22 in the initial state. The self-resetting spring assembly 8 is composed of a plurality of elastic springs, one end of each spring is bolted to the inner sleeve 2, and the other end is bolted to the upper core plate 5 or the lower core plate 4. The self-resetting spring assembly 8 is in the shape of a regular octahedron or other symmetrical arrangement. Each spring is highly symmetrical and diagonally arranged in three-dimensional space and is in a stretched state. After the support member is axially stretched or compressed, part of the spring is further stretched, and part of the spring is slightly relaxed, so that the support member has a recovery force in the tension and compression directions. The diagonal arrangement is that the axial direction of each spring intersects with the displacement direction of the upper and lower core plates, and the intersection angle changes with the displacement of the upper and lower core plates, but is not parallel, so that the component force of the spring in the displacement direction of the upper and lower core plates changes nonlinearly with the intersection angle.

[0055] When the self-resetting torsional energy dissipation support member with nonlinear stiffness is working, after being shaken, the upper core plate 5 and the lower core plate 4 move towards or away from each other, the support column I 43 and the support column II 52 also move towards or away from each other, the support column I 43 and the support column II 52 are constrained by the curve channel 32, and when the support column I 43 and the support column II 52 move towards or away from each other, the rotating disc 3 rotates, the curve channels 32 on both sides of the rotating disc 3 are opposite in direction, and the rotating directions of the rotating discs 3 on both sides are opposite when working. Pure torsion is generated inside the torsional steel pipe 6 connected to the rotating disc 3 by bolts, and the support member dissipates energy through the metal deformation of the torsional steel pipe 6.

[0056] At the same time, the springs on one side of the spring assembly connecting hole of the upper and lower core plates are further stretched diagonally, and the springs on the other side are relaxed diagonally, but they are always in a stretched state. The intersection angle changes with the displacement of the core plate and is not parallel, thereby realizing nonlinear stiffness and providing nonlinear recovery force for the support.

[0057] Finally, it should be pointed out that the above examples are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions, which should be covered in the scope of the claims of the present application.

Claims

1. A self-resetting torsional energy-dissipating support member with nonlinear stiffness, characterized in that, It includes an outer sleeve and an inner sleeve that are nested together. Multiple torsion steel pipes are arranged in the middle of the inner sleeve cavity along the length of the inner sleeve. Rotating discs are fixed at both ends of the torsion steel pipes. The inner sleeve body is provided with a lower core plate and an upper core plate that are slidably connected and cooperate with the rotating discs along the length of the inner sleeve. Support connectors are fixed at the ends of the lower core plate and the upper core plate away from the inner sleeve. Multiple self-resetting spring assemblies are symmetrically arranged at the ends of the inner sleeve cavity away from the torsion steel pipes. A pair of curved channels are symmetrically opened in the center of the rotating disc. Supports that cooperate with the curved channels are provided on the upper core plate and the lower core plate. The self-resetting spring assembly consists of multiple linear elastic springs. Each spring is bolted to the inner sleeve at one end and to the upper or lower core plate at the other end. The self-resetting spring assembly is in the shape of a regular octahedron. Each spring is arranged in a highly symmetrical oblique arrangement in three-dimensional space and is in a stretched state. The oblique arrangement means that the axial direction of each spring intersects with the displacement direction of the upper and lower core plates, and the intersection angle changes with the displacement of the upper and lower core plates. The inner sleeve has a spring assembly fixing hole adapted to the self-resetting spring assembly, a spring assembly displacement channel used in conjunction with the self-resetting spring assembly, and a torsion steel pipe assembly hole adapted to the torsion steel pipe. The self-resetting spring assembly is bolted to the inner sleeve through multiple spring fasteners that are all inserted into the spring assembly fixing hole and the spring assembly displacement channel. The lower core plate has a connecting bolt plate I adapted to the support connector at one end away from the inner sleeve, and a support channel and support I are alternately arranged at the other end. A spring assembly connecting hole I is provided in the middle of the lower core plate. The upper core plate has a connecting bolt plate II adapted to the support connector at one end away from the inner sleeve, and a support II used in conjunction with the support channel at the other end. A spring assembly connecting hole II is provided in the middle of the upper core plate. The support II is inserted into the support channel and is initially located in the middle of the support channel. The same spring fixing member is inserted between the spring assembly connecting hole I and the spring assembly connecting hole II and the spring assembly displacement channel. In the initial state, the spring assembly connecting hole I and the spring assembly connecting hole II are located directly above the middle of the spring assembly displacement channel. Support column I and support column II are respectively inserted into the left and right curved channels of the rotating disk, and are initially located in the middle of the curved channels.

2. The self-resetting torsional energy-dissipating support member with nonlinear stiffness as described in claim 1, characterized in that, A large circular hole is concentrically opened in the center of the rotating disk, and curved channels are symmetrically arranged on both sides of the large circular hole. Multiple bolt holes I are opened on the outer circumference of the large circular hole; the twisted steel pipe includes the steel pipe body and flange plates at both ends of the steel pipe body. Multiple bolt holes II corresponding to bolt holes I are opened on the flange plates, and the same bolt is inserted into bolt holes I and bolt holes II.

3. The self-resetting torsional energy-dissipating support member with nonlinear stiffness as described in claim 1, characterized in that, The outer sleeve consists of a rectangular body and two rectangular end plates. Each end plate has rectangular holes symmetrically opened at the top and bottom to match the upper and lower core plates, and the upper and lower core plates pass through the rectangular holes.

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