Sma self-centering torsional energy dissipation brace member

Abstract

The present application relates to a kind of SMA self-resetting torsional energy dissipation support components, belong to energy dissipation damping field, including mutually sleeve jointed outer sleeve and inner sleeve, and torsional steel pipe and torsional self-resetting SMA are alternately arranged in inner sleeve, the both ends of torsional steel pipe and torsional self-resetting SMA are fixed with rotating disc, and upper and lower core plate that are slidably connected and are used with rotating disc are arranged on inner sleeve barrel, and upper and lower core plate are fixed with support connecting piece, a pair of curve grooves are symmetrically opened in the center of rotating disc, and support column that is used with curve groove is arranged on upper and lower core plate, when being vibrated, upper and lower core plate move towards or away from each other, and support column also move towards or away from each other, so that rotating disc generates rotation, and the internal of torsional steel pipe and torsional self-resetting SMA fixedly connected with rotating disc generates pure torsion, and the energy is dissipated by the metal deformation of torsional steel pipe and the torsion effect of torsional self-resetting SMA, while torsional self-resetting SMA has self-resetting capacity, energy dissipation mode is various, and energy dissipation damping effect is good.

Description

TECHNICAL FIELD

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

[0002] Structures will vibrate under the action of environmental loads, and excessive vibration response will lead to component fatigue and even structural damage. Therefore, it is crucial to add a vibration reduction device to absorb / dissipate vibration energy and reduce structural vibration response, so as to improve the service performance of the structure and ensure its safety and reliability.

[0003] The existing vibration reduction technology still has many problems to be solved:

[0004] 1. The damping effect of the traditional viscoelastic damper is limited, and in the case of a major earthquake, the energy dissipation requirement cannot be met and damage is prone to occur;

[0005] 2. The positive pressure of the traditional friction damper is generally large, the wear of the friction contact surface is large, and the damper does not have self-resetting capability and has obvious residual deformation after an earthquake. SUMMARY

[0006] Therefore, the application provides an SMA self-resetting torsional energy dissipation support component to solve the problems that the existing vibration reduction technology cannot meet the energy dissipation requirement and does not have self-resetting capability.

[0007] To achieve the above purpose, the application provides the following technical scheme:

[0008] The SMA self-resetting torsional energy dissipation support component comprises an outer sleeve and an inner sleeve which are mutually sleeved, a plurality of torsional steel pipes and torsional self-resetting SMAs which are alternately arranged in the cavity of the inner sleeve, rotating discs which are fixed at both ends of the torsional steel pipes and the torsional self-resetting SMAs, 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, support connecting pieces which are fixed at the ends of the lower core plate and the upper core plate away from the inner sleeve, a pair of curved grooves which are symmetrically arranged at the center of the rotating discs, and support columns which are arranged on the upper core plate and the lower core plate and are used in cooperation with the curved grooves.

[0009] The beneficial effect of the basic scheme is that when subjected to vibration, the upper core plate and the lower core plate move towards or away from each other, the struts of the upper and lower core plates are constrained by the curved grooves, when the struts move towards or away from each other, the rotating discs rotate, the curved grooves on the two sides of the inner sleeve are opposite in direction, so the rotating directions of the rotating discs on the two sides are opposite when they work, the torsion steel pipes and the torsion self-resetting SMA inside which are fixedly connected with the rotating discs generate pure torsion, the metal deformation of the plurality of torsion steel pipes and the torsion of the torsion self-resetting SMA dissipate energy, and the torsion self-resetting SMA has a self-resetting capability, the energy dissipation and vibration reduction effect is good through the multiple energy dissipation modes of the torsion steel pipes and the torsion self-resetting SMA.

[0010] Further, the end of the lower core plate away from the inner sleeve is provided with a connecting bolt plate I matched with the support connecting piece, and the other end of the connecting bolt plate I is alternately provided with a strut groove and a strut I.

[0011] Further, the end of the upper core plate away from the inner sleeve is provided with a connecting bolt plate II matched with the support connecting piece, and the other end of the connecting bolt plate II is provided with a strut II matched with the strut groove for use, the strut II is inserted into the strut groove and located at the middle part of the strut groove in the initial state.

[0012] Further, the struts I and II are respectively inserted into the left and right curved grooves of the rotating disc and located at the middle part of the curved grooves in the initial state.

[0013] Further, the inner sleeve is provided with assembly holes matched with the torsion steel pipes and the torsion self-resetting SMA on the sleeve body, and a circular arc-shaped baffle is concentrically welded outside the assembly holes to form a disc mounting groove, and the rotating disc is mounted in the disc mounting groove.

[0014] Further, a large circular hole is concentrically formed in the center of the rotating disc, the left and right curved grooves are symmetrically arranged on the two sides of the large circular hole, and a plurality of bolt holes I are formed on the outer circumference of the large circular hole.

[0015] Further, the torsion steel pipe comprises a steel pipe body and a flange plate I at the two ends of the steel pipe body, and a plurality of bolt holes II corresponding to the bolt holes I are formed in the flange plate I.

[0016] Further, the torsion self-resetting SMA comprises an SMA rod bundle and a flange plate II at the two ends of the SMA rod bundle, and a plurality of bolt holes II corresponding to the bolt holes I are formed in the flange plate II.

[0017] Further, the same bolt is inserted into the bolt holes I and the bolt holes II.

[0018] Further, the outer sleeve is composed of a rectangular barrel and two rectangular end plates, each of which is symmetrically provided with a rectangular hole matching the upper and lower core plates.

[0019] Further, the bolt hole I is axially divided into two layers, the upper and lower holes have different diameters, the lower hole diameter matches the bolt rod, and the upper hole diameter matches the bolt head. Advantage: can hide the bolt head, and the rotating disc plane has no bolt protrusion.

[0020] The beneficial effects of the present application are:

[0021] 1. The SMA self-resetting torsional energy dissipation support member disclosed in the present application, the support column II is inserted into the support column channel and initially located in the middle of the support column channel, and after being subjected to vibration, the support column channel constrains the support column II, and the upper core plate and the lower core plate move towards or away from each other.

[0022] 2. The SMA self-resetting torsional energy dissipation support member disclosed in the present application, the support column I and the support column II are respectively inserted into the left and right curved channels of the rotating disc, and initially located in the middle of the curved channel, and after being subjected to vibration, the upper and lower core plates move towards or away from each other, and the support column I and the support column II are limited and constrained by the curved channel, and when the support column I and the support column II move towards or away from each other, the rotating disc rotates, the curved channels on both sides of the rotating disc are opposite in direction, so the rotating directions of the rotating discs on both sides are opposite when they work, the torsional steel pipe and the torsional self-resetting SMA connected with the rotating disc generate pure torsion, and the metal deformation of the plurality of torsional steel pipes and the torsional action of the torsional self-resetting SMA dissipate energy.

[0023] 3. The SMA self-resetting torsional energy dissipation support member disclosed in the present application, after being subjected to vibration, the SMA rod bundle is twisted, the SMA has shape memory effect and superelasticity effect, and has self-resetting capability.

[0024] Other advantages, objects, and features of the present application will be apparent to those skilled in the art from the following specification, and it is intended to cover any alternatives, modifications, or equivalents included within the scope of the present application. The objects and other advantages of the present application can be achieved and obtained by the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to make the purpose, technical scheme and advantages of the present application clearer, the preferred detailed description of the present application will be made below in combination with the drawings, in which:

[0026] Figure 1 The structure diagram of the SMA self-resetting torsional energy dissipation support member of the present application;

[0027] Figure 2 A sectional view of a SMA self-centering torsional energy dissipation brace member of the present application;

[0028] Figure 3 A structural schematic diagram of a SMA self-centering torsional energy dissipation brace member of the present application without an outer sleeve;

[0029] Figure 4 A structural schematic diagram of a SMA self-centering torsional energy dissipation brace member of the present application without an inner sleeve and an outer sleeve;

[0030] Figure 5 A structural schematic diagram of an inner sleeve in a SMA self-centering torsional energy dissipation brace member of the present application;

[0031] Figure 6 A structural schematic diagram of a rotating disc in a SMA self-centering torsional energy dissipation brace member of the present application;

[0032] Figure 7 A structural schematic diagram of a lower core plate in a SMA self-centering torsional energy dissipation brace member of the present application;

[0033] Figure 8 A structural schematic diagram of an upper core plate in a SMA self-centering torsional energy dissipation brace member of the present application;

[0034] Figure 9 An assembly combination diagram of an upper core plate, a lower core plate and a rotating disc in a SMA self-centering torsional energy dissipation brace member of the present application;

[0035] Figure 10 A structural schematic diagram of a torsional steel pipe in a SMA self-centering torsional energy dissipation brace member of the present application;

[0036] Figure 11 A structural schematic diagram of a torsional self-centering SMA in a SMA self-centering torsional energy dissipation brace member of the present application;

[0037] Figure 12 A structural schematic diagram of a support connecting piece in a SMA self-centering torsional energy dissipation brace member of the present application.

[0038] Reference signs: outer sleeve 1, end plate 11, inner sleeve 2, assembly hole 21, rotating disc 3, large circular hole 31, curved groove 32, bolt hole I 33, lower core plate 4, connecting bolt plate I 41, support column groove 42, support column I 43, upper core plate 5, connecting bolt plate II 51, support column II 52, torsional steel pipe 6, steel pipe body 61, flange plate I 62, torsional self-centering SMA 7, SMA rod bundle 71, flange plate II 72, bolt hole II 8, support connecting piece 9. DETAILED DESCRIPTION

[0039] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0040] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0041] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0042] like Figures 1-12 The SMA self-resetting torsional energy-dissipating support component shown includes a rectangular outer sleeve 1 and a rectangular inner sleeve 2 nested together. Two torsion steel pipes 6 and two torsion self-resetting SMAs 7 are alternately arranged inside the cavity of the inner sleeve 2. Rotating disks 3 are fixed to both ends of the torsion steel pipes 6 and the torsion self-resetting SMAs 7. A lower core plate 4 and an upper core plate 5 are slidably connected along the length of the inner sleeve 2 and are used in conjunction with the rotating disks 3. Two lower core plates 4 and two upper core plates 5 are arranged parallel to each other, and a T-shaped support connector 9 is fixed to the end of each of the two parallel lower core plates 4 and upper core plates 5 away from the inner sleeve 2. The T-shaped support connector 9 is as follows: Figure 12 The outer sleeve 1 consists of a rectangular cylinder and two rectangular end plates 11. Each end plate 11 has rectangular holes symmetrically opened on the top and bottom to match the upper and lower core plates. During assembly, the corresponding upper and lower core plates pass through the rectangular holes.

[0043] Reference Figure 5The inner sleeve 2 is provided with assembly holes 21 on the sleeve body, which are adapted to the torsion steel pipe 6 and the torsion self-resetting SMA 7. The outer side of the assembly holes 21 is concentrically welded with a circular arc baffle to form a disc mounting groove, and the disc mounting groove is mounted with the rotating disc 3.

[0044] With reference to Figure 6 The rotating disc 3 is provided with a large circular hole 31 at the center, a pair of curve grooves 32 are arranged symmetrically 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 adapted to the shank of the bolt, and the diameter of the upper hole is adapted to the head of the bolt. In this way, the bolt head can be hidden, and the rotating disc 3 is flat without bolt protrusions.

[0045] With reference to Figure 7 The lower core plate 4 is provided with a connecting bolt plate I 41 at one end away from the inner sleeve 2, which is adapted to the support connecting piece 9, and the other end is alternately provided with a support groove 42 and a support I 43.

[0046] With reference to Figure 8 The upper core plate 5 is provided with a connecting bolt plate II 51 at one end away from the inner sleeve 2, which is adapted to the support connecting piece 9, and the other end is provided with a support II 52 which is used in cooperation with the support groove 42. The support II 52 is inserted into the support groove 42 and located at the middle part of the support groove 42 in the initial state. Through the cooperation of the support II 52 and the support groove 42, the upper core plate 5 and the lower core plate 4 move towards or away from each other after being shaken.

[0047] With reference to Figure 9 The support I 43 and the support II 52 are respectively inserted into the left and right curve grooves 32 of the rotating disc 3, and are located at the middle part of the curve grooves 32 in the initial state. Through the limiting of the curve grooves 32 on the supports, the rotating disc 3 is driven to rotate when the upper and lower core plates move towards or away from each other.

[0048] With reference to Figure 10-11 The torsion steel pipe 6 includes a steel pipe body 61 and a flange plate I 62 at both ends of the steel pipe body 61, and the torsion self-resetting SMA 7 includes an SMA rod bundle 71 and a flange plate II 72 at both ends of the SMA rod bundle 71. A plurality of bolt holes II 8 corresponding to the bolt holes I 33 are arranged on the flange plate I 62 and the flange plate II 72, and the same bolt is inserted into the bolt holes I 33 and the bolt holes II 8.

[0049] When the SMA self-resetting torsional energy dissipation support member works, after being subjected to vibration, 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 curved groove 32, 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 curved grooves 32 on the two sides of the inner sleeve 2 are in opposite directions, so the rotating directions of the rotating discs 3 on the two sides are opposite when the rotating discs 3 work, the torsional steel pipe 6 and the torsional self-resetting SMA 7 fixedly connected with the rotating disc 3 generate pure torsion inside, under the metal deformation of the torsional steel pipe 6 and the torsion of the torsional self-resetting SMA 7, energy is dissipated, at the same time, the SMA rod bundle 71 is twisted, the SMA has shape memory effect and super-elasticity effect, and has self-resetting capability.

[0050] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application, 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, and all of them should be covered in the scope of the claims of the present application.

Claims

1. An SMA self-centering torsional energy dissipation brace member, characterized by, The application relates to a torsional steel pipe and a torsional self-resetting SMA, and belongs to the field of energy storage and release. A plurality of torsional steel pipes and torsional self-resetting SMAs are alternately arranged in the cavity of the inner sleeve, and rotating discs are fixed at the two ends of the torsional steel pipes and the torsional self-reseting SMAs; the inner sleeve body is provided with a lower core plate and an upper core plate which are slidably connected along the length direction of the inner sleeve and are matched with the rotating discs; support connecting pieces are fixed to the ends of the lower core plate and the upper core plate away from the inner sleeve; a pair of curve grooves are symmetrically arranged in the center of the rotating disc; and support columns matched with the curve grooves are arranged on the upper core plate and the lower core plate.

2. The SMA self-centering torsional energy dissipation brace member of claim 1, wherein, A plurality of assembling holes matched with the torsional steel pipes and the torsional self-resetting SMAs are arranged on the inner sleeve body, arc-shaped baffles are concentrically welded outside the assembling holes to form disc mounting grooves, and the rotating discs are mounted in the disc mounting grooves; a large circular hole is concentrically arranged in the center of the rotating disc, left and right curve grooves are symmetrically arranged on the two sides of the large circular hole, and a plurality of bolt holes I are arranged on the outer periphery of the large circular hole; the torsional steel pipe comprises a steel pipe body and flange plates I arranged at the two ends of the steel pipe body, a plurality of bolt holes II matched with the bolt holes I are arranged on the flange plates I; the torsional self-resetting SMA comprises SMA rod bundles and flange plates II arranged at the two ends of the SMA rod bundles, a plurality of bolt holes II matched with the bolt holes I are arranged on the flange plates II, and the same bolt is inserted into the bolt holes I and the bolt holes II.

3. The SMA self-centering torsional energy dissipation brace member of claim 2, wherein, A connecting bolt plate I matched with the support connecting piece is arranged at the end of the lower core plate away from the inner sleeve, and a support column groove and a support column I are alternately arranged at the other end of the connecting bolt plate I.

4. The SMA self-centering torsional energy dissipation brace member of claim 3, wherein, A connecting bolt plate II matched with the support connecting piece is arranged at the end of the upper core plate away from the inner sleeve, a support column II matched with the support column groove is arranged at the other end of the connecting bolt plate II, the support column II is inserted into the support column groove and is located in the middle part of the support column groove in the initial state.

5. The SMA self-centering torsional energy dissipation brace member of claim 1, wherein, The support column I and the support column II are respectively inserted into the left and right curve grooves of the rotating disc and are located in the middle part of the curve grooves in the initial state.

6. The SMA self-centering torsional energy dissipation brace member of claim 1, wherein, The outer sleeve is composed of a rectangular sleeve body and two rectangular end plates, rectangular holes matched with the upper and lower core plates are symmetrically arranged on each end plate, and the upper and lower core plates penetrate through the rectangular holes. 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.

Images