CN209781538U

CN209781538U - Self-resetting shape memory alloy damper

Info

Publication number: CN209781538U
Application number: CN201920197551.XU
Authority: CN
Inventors: 龙血松
Original assignee: Chongqing Industry Polytechnic College
Current assignee: Chongqing Industry Polytechnic College
Priority date: 2019-02-14
Filing date: 2019-02-14
Publication date: 2019-12-13
Anticipated expiration: 2029-02-14

Abstract

The utility model provides a from shape memory alloy attenuator that restores to throne, the dipping barrel comprises a barrel body, all set up first through-hole in the middle of the upper and lower both ends face of staving, all be equipped with the axle in the first through-hole, the equal fixed mounting disc in inner of axle, the disc is kept away from a terminal surface of axle and is close to several poles that use disc axis as center evenly distributed of periphery department fixed mounting, the one end and the disc fixed connection that corresponds of pole, the pole is parallel with the axle, the disc is close to the first shape memory alloy silk fixed connection through several evenly distributed between periphery department and the staving inner wall with a terminal surface of hub connection, first shape memory alloy silk is parallel with the axle, the pole other end is located to install between the two corresponding pole other ends on another disc, all through second shape memory alloy silk fixed connection between the other end of the adjacent pole of installing on. The utility model discloses simple structure, the function is reliable, possesses tensile pressure and antitorque function simultaneously.

Description

Self-resetting shape memory alloy damper

Technical Field

The utility model belongs to the technical field of mechanical engineering, specifically speaking are from restoring to throne shape memory alloy attenuator.

Background

In recent years, with the increasing prominence of vibration and vibration damping problems, the vibration control technology has become a very important research content in the engineering field, and among various engineering vibration control and vibration damping technical measures which are researched and developed, an energy dissipation damper has been widely applied to the fields of buildings, machinery, aerospace, transportation, sports equipment and the like as an effective vibration damping and isolation device.

The traditional damper has the common problems that the effect of reducing tensile stress damping energy due to the vibration in the torsional direction is not considered in the design, and the structure is more complex and the anti-torque energy dissipation effect is poor although the vibration in the torsional direction is considered in some dampers. Therefore, in order to improve the vibration isolation and damping effect of building structures and mechanical engineering and avoid the limitation of energy dissipation dampers in application, a damper in other structural forms must be developed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a from shape memory alloy attenuator that restores to throne for solve the defect among the prior art.

The utility model discloses a following technical scheme realizes:

The utility model provides a from shape memory alloy attenuator that restores to throne, the dipping barrel comprises a barrel body, all set up first through-hole in the middle of the upper and lower both ends face of staving, all be equipped with the axle in the first through-hole, the equal fixed mounting disc in inner of axle, a terminal surface that the disc kept away from the axle is close to several rods that use disc axis as center evenly distributed of periphery department fixed mounting, the one end and the disc fixed connection that corresponds of rod, the rod is parallel with the axle, a terminal surface that disc and hub connection are close to between periphery department and the staving inner wall all through the first shape memory alloy silk fixed connection of several evenly distributed, first shape memory alloy silk is parallel with the axle, the rod other end is located to install between the two corresponding rod other ends on another disc, all through second shape memory alloy silk fixed connection between the other end of the adjacent rod of installing on different discs, through the third shape memory alloy silk fixed connection of several evenly distributed between two discs.

According to the self-resetting shape memory alloy damper, one end face of the disc connected with the shaft is fixedly connected with the inner wall of the barrel body through the first spring, and the first spring is parallel to the shaft.

The other ends of the adjacent rods arranged on different disks are fixedly connected through the second spring.

According to the self-resetting shape memory alloy damper, the barrel wall of the barrel body is of a double-layer structure to form a sealed hollow interlayer and is filled with water.

According to the self-resetting shape memory alloy damper, the inner ends of the first through holes are fixedly provided with the sealing rings, and the inner rings of the sealing rings are in contact fit with the corresponding shafts.

According to the self-resetting shape memory alloy damper, the outer ends of the first through holes are fixedly provided with the guide sleeves, and the guide sleeves are sleeved on the corresponding shafts.

The utility model has the advantages that: the utility model discloses simple structure, the function is reliable, possesses tensile pressure and antitorque function simultaneously. When the two shafts are pressed to be close to each other, the first shape memory alloy wire is lengthened, the tensile stress of the first shape memory alloy wire is increased, the third shape memory alloy wire is shortened, the tensile stress of the third shape memory alloy wire is increased, and vice versa, stress difference can occur between the first shape memory alloy wire and the third shape memory alloy wire, and internal force balanced with the stress difference can do work and consume energy in the relative motion; when torque loads in different directions are applied to the two shafts, the stress difference generated by the stretching and the contraction of the adjacent second shape memory metal wires can do work and consume energy in the movement in the rotating direction, the vibration isolation and damping effect on the vibration waves in the horizontal tension and compression and torsion directions of the piston is good, and meanwhile, the intelligent automatic resetting capability is realized in the horizontal direction and the torsion direction. In addition, the vibration isolation and damping device has good tension and compression resistance and torsion resistance vibration isolation and damping effects, and can be independently used as a tension and compression resistance damper or a torsion resistance damper, and the vibration isolation and damping capabilities of the tension and compression resistance damper and the torsion resistance damper are not influenced or restricted.

Drawings

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of the present invention; 3 fig. 3 2 3 is 3 an 3 enlarged 3 view 3 of 3 a 3 sectional 3 view 3 taken 3 along 3 line 3 a 3- 3 a 3 of 3 fig. 3 1 3. 3

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

A self-resetting shape memory alloy damper comprises a barrel body 1, wherein a first through hole 2 is formed in the middle of the upper end face and the lower end face of the barrel body 1, a shaft 3 is arranged in each first through hole 2, a disc 4 is fixedly installed at the inner end of each shaft 3, a plurality of rods 5 which are uniformly distributed by taking the central axis of each disc 4 as the center are fixedly installed at the position, close to the periphery, of one end face of each disc 4 far away from each shaft 3, one end of each rod 5 is fixedly connected with the corresponding disc 4, each rod 5 is parallel to each shaft 3, one end face, close to the periphery, of each disc 4 connected with each shaft 3 is fixedly connected with the inner wall of the barrel body 1 through a plurality of first shape memory alloy wires 6 which are uniformly distributed, each first shape memory alloy wire 6 is parallel to each shaft 3, the other end of each rod 5 is located between the other ends of two corresponding rods 5 installed on the other disc 4, the other ends of adjacent rods 5 installed on, the two disks 4 are fixedly connected through a plurality of third shape memory alloy wires 13 which are uniformly distributed. The utility model discloses simple structure, the function is reliable, possesses tensile pressure and antitorque function simultaneously. When the two shafts 3 are pressed to approach each other, the first shape memory alloy wire 6 is lengthened, the tensile stress of the first shape memory alloy wire 6 is increased, the third shape memory alloy wire 13 is shortened, the tensile stress of the third shape memory alloy wire 13 is increased, and vice versa, a stress difference occurs between the first shape memory alloy wire 6 and the third shape memory alloy wire 13, and internal force balanced with the stress difference applies work and consumes energy in the relative motion; when torque loads in different directions are applied to the two shafts 3, the stress difference generated by the stretching and the contraction of the adjacent second shape memory metal wires 7 can do work and consume energy in the movement in the rotating direction, so that the vibration isolation and damping effect on the vibration waves in the horizontal tension and compression and torsion directions of the piston is good, and meanwhile, the intelligent automatic resetting capability is realized in the horizontal direction and the torsion direction. In addition, the vibration isolation and damping device has good tension and compression resistance and torsion resistance vibration isolation and damping effects, and can be independently used as a tension and compression resistance damper or a torsion resistance damper, and the vibration isolation and damping capabilities of the tension and compression resistance damper and the torsion resistance damper are not influenced or restricted.

Specifically, as shown in the figure, the end surface of the disc 4 connected to the shaft 3 and the inner wall of the barrel 1 are fixedly connected through a first spring 8, and the first spring 8 is parallel to the shaft 3. The first spring 8 can improve the restoring force of the damper, improving the self-restoring characteristic of the present invention.

Specifically, as shown in the drawings, the other ends of the adjacent rods 5 mounted on different disks 4 in the embodiment are all fixedly connected through a second spring 9. Second spring 9 can improve the restoring force of attenuator, improves the utility model discloses a self-resuming characteristic.

Further, as shown in the drawings, the tub wall of the tub body 1 according to the present embodiment is a double-layer structure to form a sealed hollow interlayer 10 and is filled with water. The characteristic of large specific heat of water can be utilized through the design, so that the temperature change of the working environment of the shape memory alloy wire is small, the superelasticity of the shape memory alloy wire is more stable, and the mechanical property of the damper is more stable.

Furthermore, as shown in the figure, the inner ends of the first through holes 2 in this embodiment are fixedly mounted with seal rings 11, and the inner rings of the seal rings 11 are in contact fit with the corresponding shafts 3. The sealing performance of the space in the barrel body can be improved through the design, the temperature change of the working environment of the shape memory alloy wire is further smaller, the superelasticity of the shape memory alloy wire is more stable, and the mechanical property of the damper is more stable.

Furthermore, as shown in the drawings, the outer ends of the first through holes 2 are fixedly provided with guide sleeves 12, and the guide sleeves 12 are sleeved on the corresponding shafts 3. Can improve the installation stability of axle 3 through this design, improve the utility model discloses structural strength.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A self-resetting shape memory alloy damper is characterized in that: comprises a barrel body (1), first through holes (2) are respectively arranged in the middle of the upper end surface and the lower end surface of the barrel body (1), shafts (3) are respectively arranged in the first through holes (2), disks (4) are respectively and fixedly installed at the inner ends of the shafts (3), a plurality of rods (5) which are uniformly distributed by taking the central axis of the disks (4) as the center are fixedly installed at the position, close to the periphery, of one end surface of each disk (4) far away from the shaft (3), one end of each rod (5) is fixedly connected with the corresponding disk (4), each rod (5) is parallel to the shaft (3), a plurality of first shape memory alloy wires (6) which are uniformly distributed are respectively arranged between the position, close to the periphery, of one end surface of each disk (4) connected with the shaft (3) and the inner wall of the barrel body (1), the first shape memory alloy wires (6) are parallel to the shaft (3), the other ends of the rods (5) are positioned between the, the other ends of the adjacent rods (5) arranged on different discs (4) are fixedly connected through second shape memory alloy wires (7), and the two discs (4) are fixedly connected through a plurality of third shape memory alloy wires (13) which are uniformly distributed.

2. A self-resetting shape memory alloy damper of claim 1, wherein: disc (4) and an end face of being connected of axle (3) all through first spring (8) fixed connection between and staving (1) inner wall, first spring (8) are parallel with axle (3).

3. A self-resetting shape memory alloy damper of claim 1, wherein: the other ends of the adjacent rods (5) arranged on different discs (4) are fixedly connected through second springs (9).

4. A self-resetting shape memory alloy damper of claim 1, wherein: the barrel wall of the barrel body (1) is a double-layer structure to form a sealed hollow interlayer (10) and is filled with water.

5. A self-resetting shape memory alloy damper according to claim 4, wherein: the inner ends of the first through holes (2) are fixedly provided with sealing rings (11), and the inner rings of the sealing rings (11) are in contact fit with the corresponding shafts (3).

6. A self-resetting shape memory alloy damper of claim 1, wherein: the outer end of the first through hole (2) is fixedly provided with a guide sleeve (12), and the guide sleeve (12) is sleeved on the corresponding shaft (3).